Chapter 5 MySQL Server Administration_1

MySQL Server (mysqld) is the main program that does most of the work in a MySQL installation. This chapter provides an overview of MySQL Server and covers general server administration:

Server configuration
The data directory, particularly the mysql system database
The server log files
Management of multiple servers on a single machine

For additional information on administrative topics, see also:

Chapter 6, Security
Chapter 7, Backup and Recovery
Chapter 16, Replication

5.1 The MySQL Server

5.1.1 Configuring the Server

5.1.2 Server Configuration Defaults

5.1.3 Server Option and Variable Reference

5.1.4 Server Command Options

5.1.5 Server System Variables

5.1.6 Using System Variables

5.1.7 Server Status Variables

5.1.8 Server SQL Modes

5.1.9 IPv6 Support

5.1.10 Server-Side Help

5.1.11 Server Response to Signals

5.1.12 The Server Shutdown Process

mysqld is the MySQL server. The following discussion covers these MySQL server configuration topics:

Startup options that the server supports. You can specify these options on the command line, through configuration files, or both.
Server system variables. These variables reflect the current state and values of the startup options, some of which can be modified while the server is running.
Server status variables. These variables contain counters and statistics about runtime operation.
How to set the server SQL mode. This setting modifies certain aspects of SQL syntax and semantics, for example for compatibility with code from other database systems, or to control the error handling for particular situations.
The server shutdown process. There are performance and reliability considerations depending on the type of table (transactional or nontransactional) and whether you use replication.

For listings of MySQL server variables and options that have been added, deprecated, or removed in MySQL 5.7, see Section 1.5, "Server and Status Variables and Options Added, Deprecated, or Removed in MySQL 5.7".

Note

Not all storage engines are supported by all MySQL server binaries and configurations. To find out how to determine which storage engines your MySQL server installation supports, see Section 13.7.5.16, "SHOW ENGINES Syntax".

5.1.1 Configuring the Server

The MySQL server, mysqld, has many command options and system variables that can be set at startup to configure its operation. To determine the command option and system variable values used by the server, execute this command:

shell> mysqld --verbose --help

The command produces a list of all mysqld options and configurable system variables. Its output includes the default option and variable values and looks something like this:

abort-slave-event-count 0

allow-suspicious-udfs FALSE

archive ON

auto-increment-increment 1

auto-increment-offset 1

autocommit TRUE

automatic-sp-privileges TRUE

avoid-temporal-upgrade FALSE

back-log 80

basedir /home/jon/bin/mysql-5.7/

...

tmpdir /tmp

transaction-alloc-block-size 8192

transaction-isolation REPEATABLE-READ

transaction-prealloc-size 4096

transaction-read-only FALSE

transaction-write-set-extraction OFF

updatable-views-with-limit YES

validate-user-plugins TRUE

verbose TRUE

wait-timeout 28800

To see the current system variable values used by the server as it runs, connect to it and execute this statement:

mysql> SHOW VARIABLES;

To see some statistical and status indicators for a running server, execute this statement:

mysql> SHOW STATUS;

System variable and status information also is available using the mysqladmin command:

shell> mysqladmin variables

shell> mysqladmin extended-status

For a full description of all command options, system variables, and status variables, see these sections:

Section 5.1.4, "Server Command Options"
Section 5.1.5, "Server System Variables"
Section 5.1.7, "Server Status Variables"

More detailed monitoring information is available from the Performance Schema; see Chapter 25, MySQL Performance Schema.

MySQL uses algorithms that are very scalable, so you can usually run with very little memory. However, normally better performance results from giving MySQL more memory.

When tuning a MySQL server, the two most important variables to configure are key_buffer_size and table_open_cache. You should first feel confident that you have these set appropriately before trying to change any other variables.

The following examples indicate some typical variable values for different runtime configurations.

If you have at least 1-2GB of memory and many tables and want maximum performance with a moderate number of clients, use something like this:
shell> mysqld_safe --key_buffer_size=384M --table_open_cache=4000 \
--sort_buffer_size=4M --read_buffer_size=1M &
If you have only 256MB of memory and only a few tables, but you still do a lot of sorting, you can use something like this:
shell> mysqld_safe --key_buffer_size=64M --sort_buffer_size=1M
If there are very many simultaneous connections, swapping problems may occur unless mysqld has been configured to use very little memory for each connection. mysqld performs better if you have enough memory for all connections.
With little memory and lots of connections, use something like this:
shell> mysqld_safe --key_buffer_size=512K --sort_buffer_size=100K \
--read_buffer_size=100K &
Or even this:
shell> mysqld_safe --key_buffer_size=512K --sort_buffer_size=16K \
--table_open_cache=32 --read_buffer_size=8K \
--net_buffer_length=1K &

If you are performing GROUP BY or ORDER BY operations on tables that are much larger than your available memory, increase the value of read_rnd_buffer_size to speed up the reading of rows following sorting operations.

If you specify an option on the command line for mysqld or mysqld_safe, it remains in effect only for that invocation of the server. To use the option every time the server runs, put it in an option file. See Section 4.2.6, "Using Option Files".

5.1.2 Server Configuration Defaults

The MySQL server has many operating parameters, which you can change at server startup using command-line options or configuration files (option files). It is also possible to change many parameters at runtime. For general instructions on setting parameters at startup or runtime, see Section 5.1.4, "Server Command Options", andSection 5.1.5, "Server System Variables".

Before MySQL 5.7.5, on Unix platforms, mysql_install_db creates a default option file named my.cnf in the base installation directory. This file is created from a template included in the distribution package named my-default.cnf. You can find the template in or under the base installation directory. When started usingmysqld_safe, the server uses my.cnf file by default. If my.cnf already exists, mysql_install_db assumes it to be in use and writes a new file named my-new.cnf instead.

Note

As of MySQL 5.7.18, my-default.cnf is no longer included in or installed by distribution packages.

With one exception, the settings in the default option file are commented and have no effect. The exception is that the file sets the sql_mode system variable to NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES. This setting produces a server configuration that results in errors rather than warnings for bad data in operations that modify transactional tables. See Section 5.1.8, "Server SQL Modes".

On Windows, MySQL Installer interacts with the user and creates a file named my.ini in the base installation directory as the default option file. If you install on Windows from a Zip archive, you can copy the my-default.ini template file in the base installation directory to my.ini and use the latter as the default option file.

Note

As of MySQL 5.7.18, my-default.ini is no longer included in or installed by distribution packages.

Note

On Windows, the .ini or .cnf option file extension might not be displayed.

On any platform, after completing the installation process, you can edit the default option file at any time to modify the parameters used by the server. For example, to use a parameter setting in the file that is commented with a #character at the beginning of the line, remove the #, and modify the parameter value if necessary. To disable a setting, either add a # to the beginning of the line or remove it.

For additional information about option file format and syntax, see Section 4.2.6, "Using Option Files".

5.1.3 Server Option and Variable Reference

The following table provides a list of all the command line options, server and status variables applicable withinmysqld.

The table lists command-line options (Cmd-line), options valid in configuration files (Option file), server system variables (System Var), and status variables (Status var) in one unified list, with notification of where each option/variable is valid. If a server option set on the command line or in an option file differs from the name of the corresponding server system or status variable, the variable name is noted immediately below the corresponding option. For status variables, the scope of the variable is shown (Scope) as either global, session, or both. Please see the corresponding sections for details on setting and using the options and variables. Where appropriate, a direct link to further information on the item as available.

For a version of this table that is specific to NDB Cluster, see Section 21.3.2.5, "NDB Cluster mysqld Option and Variable Reference".

Table 5.1 Option/Variable Summary

Name	Cmd-Line	Option File	System Var	Status Var	Var Scope	Dynamic
abort-slave-event-count	Yes	Yes
Aborted_clients				Yes	Global	No
Aborted_connects				Yes	Global	No
allow-suspicious-udfs	Yes	Yes
ansi	Yes	Yes
audit-log	Yes	Yes
audit_log_buffer_size	Yes	Yes	Yes		Global	No
audit_log_connection_policy	Yes	Yes	Yes		Global	Yes
audit_log_current_session			Yes		Both	No
Audit_log_current_size				Yes	Global	No
Audit_log_event_max_drop_size				Yes	Global	No
Audit_log_events				Yes	Global	No
Audit_log_events_filtered				Yes	Global	No
Audit_log_events_lost				Yes	Global	No
Audit_log_events_written				Yes	Global	No
audit_log_exclude_accounts	Yes	Yes	Yes		Global	Yes
audit_log_file	Yes	Yes	Yes		Global	No
audit_log_filter_id			Yes		Both	No
audit_log_flush			Yes		Global	Yes
audit_log_format	Yes	Yes	Yes		Global	No
audit_log_include_accounts	Yes	Yes	Yes		Global	Yes
audit_log_policy	Yes	Yes	Yes		Global	No
audit_log_rotate_on_size	Yes	Yes	Yes		Global	Yes
audit_log_statement_policy	Yes	Yes	Yes		Global	Yes
audit_log_strategy	Yes	Yes	Yes		Global	No
Audit_log_total_size				Yes	Global	No
Audit_log_write_waits				Yes	Global	No
authentication_ldap_sasl_auth_method_name	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_bind_base_dn	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_bind_root_dn	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_bind_root_pwd	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_ca_path	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_group_search_attr	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_init_pool_size	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_log_status	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_max_pool_size	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_server_host	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_server_port	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_tls	Yes	Yes	Yes		Global	Yes
authentication_ldap_sasl_user_search_attr	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_auth_method_name	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_bind_base_dn	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_bind_root_dn	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_bind_root_pwd	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_ca_path	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_group_search_attr	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_init_pool_size	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_log_status	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_max_pool_size	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_server_host	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_server_port	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_tls	Yes	Yes	Yes		Global	Yes
authentication_ldap_simple_user_search_attr	Yes	Yes	Yes		Global	Yes
authentication_windows_log_level	Yes	Yes
authentication_windows_use_principal_name	Yes	Yes
auto_generate_certs	Yes	Yes	Yes		Global	No
auto_increment_increment			Yes		Both	Yes
auto_increment_offset			Yes		Both	Yes
autocommit	Yes	Yes	Yes		Both	Yes
automatic_sp_privileges			Yes		Global	Yes
avoid_temporal_upgrade	Yes	Yes	Yes		Global	Yes
back_log			Yes		Global	No
basedir	Yes	Yes	Yes		Global	No
big-tables	Yes	Yes			Both	Yes
- Variable: big_tables			Yes		Both	Yes
bind-address	Yes	Yes			Global	No
- Variable: bind_address			Yes		Global	No
Binlog_cache_disk_use				Yes	Global	No
binlog_cache_size	Yes	Yes	Yes		Global	Yes
Binlog_cache_use				Yes	Global	No
binlog-checksum	Yes	Yes
binlog_checksum			Yes		Global	Yes
binlog_direct_non_transactional_updates	Yes	Yes	Yes		Both	Yes
binlog-do-db	Yes	Yes
binlog_error_action	Yes	Yes	Yes		Both	Yes
binlog-format	Yes	Yes			Both	Yes
- Variable: binlog_format			Yes		Both	Yes
binlog_group_commit_sync_delay	Yes	Yes	Yes		Global	Yes
binlog_group_commit_sync_no_delay_count	Yes	Yes	Yes		Global	Yes
binlog_gtid_simple_recovery	Yes	Yes	Yes		Global	No
binlog-ignore-db	Yes	Yes
binlog_max_flush_queue_time			Yes		Global	Yes
binlog_order_commits			Yes		Global	Yes
binlog-row-event-max-size	Yes	Yes
binlog_row_image	Yes	Yes	Yes		Both	Yes
binlog-rows-query-log-events	Yes	Yes
- Variable: binlog_rows_query_log_events
binlog_rows_query_log_events			Yes		Both	Yes
Binlog_stmt_cache_disk_use				Yes	Global	No
binlog_stmt_cache_size	Yes	Yes	Yes		Global	Yes
Binlog_stmt_cache_use				Yes	Global	No
binlogging_impossible_mode	Yes	Yes	Yes		Both	Yes
block_encryption_mode	Yes	Yes	Yes		Both	Yes
bootstrap	Yes	Yes
bulk_insert_buffer_size	Yes	Yes	Yes		Both	Yes
Bytes_received				Yes	Both	No
Bytes_sent				Yes	Both	No
character_set_client			Yes		Both	Yes
character-set-client-handshake	Yes	Yes
character_set_connection			Yes		Both	Yes
character_set_database ^[a]			Yes		Both	Yes
character-set-filesystem	Yes	Yes			Both	Yes
- Variable: character_set_filesystem			Yes		Both	Yes
character_set_results			Yes		Both	Yes
character-set-server	Yes	Yes			Both	Yes
- Variable: character_set_server			Yes		Both	Yes
character_set_system			Yes		Global	No
character-sets-dir	Yes	Yes			Global	No
- Variable: character_sets_dir			Yes		Global	No
check_proxy_users	Yes	Yes	Yes		Global	Yes
chroot	Yes	Yes
collation_connection			Yes		Both	Yes
collation_database ^[b]			Yes		Both	Yes
collation-server	Yes	Yes			Both	Yes
- Variable: collation_server			Yes		Both	Yes
Com_admin_commands				Yes	Both	No
Com_alter_db				Yes	Both	No
Com_alter_db_upgrade				Yes	Both	No
Com_alter_event				Yes	Both	No
Com_alter_function				Yes	Both	No
Com_alter_procedure				Yes	Both	No
Com_alter_server				Yes	Both	No
Com_alter_table				Yes	Both	No
Com_alter_tablespace				Yes	Both	No
Com_alter_user				Yes	Both	No
Com_analyze				Yes	Both	No
Com_assign_to_keycache				Yes	Both	No
Com_begin				Yes	Both	No
Com_binlog				Yes	Both	No
Com_call_procedure				Yes	Both	No
Com_change_db				Yes	Both	No
Com_change_master				Yes	Both	No
Com_change_repl_filter				Yes	Both	No
Com_check				Yes	Both	No
Com_checksum				Yes	Both	No
Com_commit				Yes	Both	No
Com_create_db				Yes	Both	No
Com_create_event				Yes	Both	No
Com_create_function				Yes	Both	No
Com_create_index				Yes	Both	No
Com_create_procedure				Yes	Both	No
Com_create_server				Yes	Both	No
Com_create_table				Yes	Both	No
Com_create_trigger				Yes	Both	No
Com_create_udf				Yes	Both	No
Com_create_user				Yes	Both	No
Com_create_view				Yes	Both	No
Com_dealloc_sql				Yes	Both	No
Com_delete				Yes	Both	No
Com_delete_multi				Yes	Both	No
Com_do				Yes	Both	No
Com_drop_db				Yes	Both	No
Com_drop_event				Yes	Both	No
Com_drop_function				Yes	Both	No
Com_drop_index				Yes	Both	No
Com_drop_procedure				Yes	Both	No
Com_drop_server				Yes	Both	No
Com_drop_table				Yes	Both	No
Com_drop_trigger				Yes	Both	No
Com_drop_user				Yes	Both	No
Com_drop_view				Yes	Both	No
Com_empty_query				Yes	Both	No
Com_execute_sql				Yes	Both	No
Com_explain_other				Yes	Both	No
Com_flush				Yes	Both	No
Com_get_diagnostics				Yes	Both	No
Com_grant				Yes	Both	No
Com_group_replication_start				Yes	Global	No
Com_group_replication_stop				Yes	Global	No
Com_ha_close				Yes	Both	No
Com_ha_open				Yes	Both	No
Com_ha_read				Yes	Both	No
Com_help				Yes	Both	No
Com_insert				Yes	Both	No
Com_insert_select				Yes	Both	No
Com_install_plugin				Yes	Both	No
Com_kill				Yes	Both	No
Com_load				Yes	Both	No
Com_lock_tables				Yes	Both	No
Com_optimize				Yes	Both	No
Com_preload_keys				Yes	Both	No
Com_prepare_sql				Yes	Both	No
Com_purge				Yes	Both	No
Com_purge_before_date				Yes	Both	No
Com_release_savepoint				Yes	Both	No
Com_rename_table				Yes	Both	No
Com_rename_user				Yes	Both	No
Com_repair				Yes	Both	No
Com_replace				Yes	Both	No
Com_replace_select				Yes	Both	No
Com_reset				Yes	Both	No
Com_resignal				Yes	Both	No
Com_revoke				Yes	Both	No
Com_revoke_all				Yes	Both	No
Com_rollback				Yes	Both	No
Com_rollback_to_savepoint				Yes	Both	No
Com_savepoint				Yes	Both	No
Com_select				Yes	Both	No
Com_set_option				Yes	Both	No
Com_show_authors				Yes	Both	No
Com_show_binlog_events				Yes	Both	No
Com_show_binlogs				Yes	Both	No
Com_show_charsets				Yes	Both	No
Com_show_collations				Yes	Both	No
Com_show_contributors				Yes	Both	No
Com_show_create_db				Yes	Both	No
Com_show_create_event				Yes	Both	No
Com_show_create_func				Yes	Both	No
Com_show_create_proc				Yes	Both	No
Com_show_create_table				Yes	Both	No
Com_show_create_trigger				Yes	Both	No
Com_show_create_user				Yes	Both	No
Com_show_databases				Yes	Both	No
Com_show_engine_logs				Yes	Both	No
Com_show_engine_mutex				Yes	Both	No
Com_show_engine_status				Yes	Both	No
Com_show_errors				Yes	Both	No
Com_show_events				Yes	Both	No
Com_show_fields				Yes	Both	No
Com_show_function_code				Yes	Both	No
Com_show_function_status				Yes	Both	No
Com_show_grants				Yes	Both	No
Com_show_keys				Yes	Both	No
Com_show_master_status				Yes	Both	No
Com_show_ndb_status				Yes	Both	No
Com_show_new_master				Yes	Both	No
Com_show_open_tables				Yes	Both	No
Com_show_plugins				Yes	Both	No
Com_show_privileges				Yes	Both	No
Com_show_procedure_code				Yes	Both	No
Com_show_procedure_status				Yes	Both	No
Com_show_processlist				Yes	Both	No
Com_show_profile				Yes	Both	No
Com_show_profiles				Yes	Both	No
Com_show_relaylog_events				Yes	Both	No
Com_show_slave_hosts				Yes	Both	No
Com_show_slave_status				Yes	Both	No
Com_show_slave_status_nonblocking				Yes	Both	No
Com_show_status				Yes	Both	No
Com_show_storage_engines				Yes	Both	No
Com_show_table_status				Yes	Both	No
Com_show_tables				Yes	Both	No
Com_show_triggers				Yes	Both	No
Com_show_variables				Yes	Both	No
Com_show_warnings				Yes	Both	No
Com_shutdown				Yes	Both	No
Com_signal				Yes	Both	No
Com_slave_start				Yes	Both	No
Com_slave_stop				Yes	Both	No
Com_stmt_close				Yes	Both	No
Com_stmt_execute				Yes	Both	No
Com_stmt_fetch				Yes	Both	No
Com_stmt_prepare				Yes	Both	No
Com_stmt_reprepare				Yes	Both	No
Com_stmt_reset				Yes	Both	No
Com_stmt_send_long_data				Yes	Both	No
Com_truncate				Yes	Both	No
Com_uninstall_plugin				Yes	Both	No
Com_unlock_tables				Yes	Both	No
Com_update				Yes	Both	No
Com_update_multi				Yes	Both	No
Com_xa_commit				Yes	Both	No
Com_xa_end				Yes	Both	No
Com_xa_prepare				Yes	Both	No
Com_xa_recover				Yes	Both	No
Com_xa_rollback				Yes	Both	No
Com_xa_start				Yes	Both	No
completion_type	Yes	Yes	Yes		Both	Yes
Compression				Yes	Session	No
concurrent_insert	Yes	Yes	Yes		Global	Yes
connect_timeout	Yes	Yes	Yes		Global	Yes
Connection_control_delay_generated				Yes	Global	No
connection_control_failed_connections_threshold	Yes	Yes	Yes		Global	Yes
connection_control_max_connection_delay	Yes	Yes	Yes		Global	Yes
connection_control_min_connection_delay	Yes	Yes	Yes		Global	Yes
Connection_errors_accept				Yes	Global	No
Connection_errors_internal				Yes	Global	No
Connection_errors_max_connections				Yes	Global	No
Connection_errors_peer_addr				Yes	Global	No
Connection_errors_select				Yes	Global	No
Connection_errors_tcpwrap				Yes	Global	No
Connections				Yes	Global	No
console	Yes	Yes
core-file	Yes	Yes
core_file			Yes		Global	No
Created_tmp_disk_tables				Yes	Both	No
Created_tmp_files				Yes	Global	No
Created_tmp_tables				Yes	Both	No
daemon_memcached_enable_binlog	Yes	Yes	Yes		Global	No
daemon_memcached_engine_lib_name	Yes	Yes	Yes		Global	No
daemon_memcached_engine_lib_path	Yes	Yes	Yes		Global	No
daemon_memcached_option	Yes	Yes	Yes		Global	No
daemon_memcached_r_batch_size	Yes	Yes	Yes		Global	No
daemon_memcached_w_batch_size	Yes	Yes	Yes		Global	No
daemonize	Yes	Yes
datadir	Yes	Yes	Yes		Global	No
date_format			Yes		Global	No
datetime_format			Yes		Global	No
debug	Yes	Yes	Yes		Both	Yes
debug_sync			Yes		Session	Yes
debug-sync-timeout	Yes	Yes
default-authentication-plugin	Yes	Yes
default_authentication_plugin	Yes	Yes	Yes		Global	No
default_password_lifetime	Yes	Yes	Yes		Global	Yes
default-storage-engine	Yes	Yes			Both	Yes
- Variable: default_storage_engine			Yes		Both	Yes
default-time-zone	Yes	Yes
default_tmp_storage_engine	Yes	Yes	Yes		Both	Yes
default_week_format	Yes	Yes	Yes		Both	Yes
defaults-extra-file	Yes
defaults-file	Yes
defaults-group-suffix	Yes
delay-key-write	Yes	Yes			Global	Yes
- Variable: delay_key_write			Yes		Global	Yes
Delayed_errors				Yes	Global	No
delayed_insert_limit	Yes	Yes	Yes		Global	Yes
Delayed_insert_threads				Yes	Global	No
delayed_insert_timeout	Yes	Yes	Yes		Global	Yes
delayed_queue_size	Yes	Yes	Yes		Global	Yes
Delayed_writes				Yes	Global	No
des-key-file	Yes	Yes
disable-partition-engine-check	Yes	Yes
disabled_storage_engines	Yes	Yes	Yes		Global	No
disconnect_on_expired_password	Yes	Yes	Yes		Session	No
disconnect-slave-event-count	Yes	Yes
div_precision_increment	Yes	Yes	Yes		Both	Yes
early-plugin-load	Yes	Yes
enable-named-pipe	Yes	Yes
- Variable: named_pipe
end_markers_in_json			Yes		Both	Yes
enforce-gtid-consistency	Yes	Yes	Yes		Global	Varies
enforce_gtid_consistency	Yes	Yes	Yes		Global	Varies
eq_range_index_dive_limit			Yes		Both	Yes
error_count			Yes		Session	No
event-scheduler	Yes	Yes			Global	Yes
- Variable: event_scheduler			Yes		Global	Yes
executed-gtids-compression-period	Yes	Yes
- Variable: executed_gtids_compression_period
executed_gtids_compression_period			Yes		Global	Yes
exit-info	Yes	Yes
expire_logs_days	Yes	Yes	Yes		Global	Yes
explicit_defaults_for_timestamp	Yes	Yes	Yes		Both	Yes
external-locking	Yes	Yes
- Variable: skip_external_locking
external_user			Yes		Session	No
federated	Yes	Yes
Firewall_access_denied				Yes	Global	No
Firewall_access_granted				Yes	Global	No
Firewall_cached_entries				Yes	Global	No
flush	Yes	Yes	Yes		Global	Yes
Flush_commands				Yes	Global	No
flush_time	Yes	Yes	Yes		Global	Yes
foreign_key_checks			Yes		Both	Yes
ft_boolean_syntax	Yes	Yes	Yes		Global	Yes
ft_max_word_len	Yes	Yes	Yes		Global	No
ft_min_word_len	Yes	Yes	Yes		Global	No
ft_query_expansion_limit	Yes	Yes	Yes		Global	No
ft_stopword_file	Yes	Yes	Yes		Global	No
gdb	Yes	Yes
general-log	Yes	Yes			Global	Yes
- Variable: general_log			Yes		Global	Yes
general_log_file	Yes	Yes	Yes		Global	Yes
group_concat_max_len	Yes	Yes	Yes		Both	Yes
group_replication_allow_local_disjoint_gtids_join	Yes	Yes	Yes		Global	Yes
group_replication_allow_local_lower_version_join	Yes	Yes	Yes		Global	Yes
group_replication_auto_increment_increment	Yes	Yes	Yes		Global	Yes
group_replication_bootstrap_group	Yes	Yes	Yes		Global	Yes
group_replication_components_stop_timeout	Yes	Yes	Yes		Global	Yes
group_replication_compression_threshold	Yes	Yes	Yes		Global	Yes
group_replication_enforce_update_everywhere_checks	Yes	Yes	Yes		Global	Yes
group_replication_flow_control_applier_threshold	Yes	Yes	Yes		Global	Yes
group_replication_flow_control_certifier_threshold	Yes	Yes	Yes		Global	Yes
group_replication_flow_control_mode	Yes	Yes	Yes		Global	Yes
group_replication_force_members	Yes	Yes	Yes		Global	Yes
group_replication_group_name	Yes	Yes	Yes		Global	Yes
group_replication_group_seeds	Yes	Yes	Yes		Global	Yes
group_replication_gtid_assignment_block_size	Yes	Yes	Yes		Global	Yes
group_replication_ip_whitelist	Yes	Yes	Yes		Global	Yes
group_replication_local_address	Yes	Yes	Yes		Global	Yes
group_replication_poll_spin_loops	Yes	Yes	Yes		Global	Yes
group_replication_recovery_complete_at	Yes	Yes	Yes		Global	Yes
group_replication_recovery_reconnect_interval	Yes	Yes	Yes		Global	Yes
group_replication_recovery_retry_count	Yes	Yes	Yes		Global	Yes
group_replication_recovery_ssl_ca	Yes	Yes	Yes		Global	Yes
group_replication_recovery_ssl_capath	Yes	Yes	Yes		Global	Yes
group_replication_recovery_ssl_cert	Yes	Yes	Yes		Global	Yes
group_replication_recovery_ssl_cipher	Yes	Yes	Yes		Global	Yes
group_replication_recovery_ssl_crl	Yes	Yes	Yes		Global	Yes
group_replication_recovery_ssl_crlpath	Yes	Yes	Yes		Global	Yes
group_replication_recovery_ssl_key	Yes	Yes	Yes		Global	Yes
group_replication_recovery_ssl_verify_server_cert	Yes	Yes	Yes		Global	Yes
group_replication_recovery_use_ssl	Yes	Yes	Yes		Global	Yes
group_replication_single_primary_mode	Yes	Yes	Yes		Global	Yes
group_replication_ssl_mode	Yes	Yes	Yes		Global	Yes
group_replication_start_on_boot	Yes	Yes	Yes		Global	Yes
group_replication_transaction_size_limit	Yes	Yes	Yes		Global	Yes
group_replication_unreachable_majority_timeout	Yes	Yes	Yes		Global	Yes
gtid_executed			Yes		Varies	No
gtid-executed-compression-period	Yes	Yes
- Variable: gtid_executed_compression_period
gtid_executed_compression_period			Yes		Global	Yes
gtid-mode	Yes	Yes			Global	Varies
- Variable: gtid_mode			Yes		Global	Varies
gtid_mode			Yes		Global	Varies
gtid_next			Yes		Session	Yes
gtid_owned			Yes		Both	No
gtid_purged			Yes		Global	Yes
Handler_commit				Yes	Both	No
Handler_delete				Yes	Both	No
Handler_discover				Yes	Both	No
Handler_external_lock				Yes	Both	No
Handler_mrr_init				Yes	Both	No
Handler_prepare				Yes	Both	No
Handler_read_first				Yes	Both	No
Handler_read_key				Yes	Both	No
Handler_read_last				Yes	Both	No
Handler_read_next				Yes	Both	No
Handler_read_prev				Yes	Both	No
Handler_read_rnd				Yes	Both	No
Handler_read_rnd_next				Yes	Both	No
Handler_rollback				Yes	Both	No
Handler_savepoint				Yes	Both	No
Handler_savepoint_rollback				Yes	Both	No
Handler_update				Yes	Both	No
Handler_write				Yes	Both	No
have_compress			Yes		Global	No
have_crypt			Yes		Global	No
have_dynamic_loading			Yes		Global	No
have_geometry			Yes		Global	No
have_openssl			Yes		Global	No
have_profiling			Yes		Global	No
have_query_cache			Yes		Global	No
have_rtree_keys			Yes		Global	No
have_ssl			Yes		Global	No
have_statement_timeout			Yes		Global	No
have_symlink			Yes		Global	No
help	Yes	Yes
host_cache_size			Yes		Global	Yes
hostname			Yes		Global	No
identity			Yes		Session	Yes
ignore-builtin-innodb	Yes	Yes			Global	No
- Variable: ignore_builtin_innodb			Yes		Global	No
ignore-db-dir	Yes	Yes
ignore_db_dirs			Yes		Global	No
init_connect	Yes	Yes	Yes		Global	Yes
init-file	Yes	Yes			Global	No
- Variable: init_file			Yes		Global	No
init_slave	Yes	Yes	Yes		Global	Yes
initialize	Yes	Yes
initialize-insecure	Yes	Yes
innodb	Yes	Yes
innodb_adaptive_flushing	Yes	Yes	Yes		Global	Yes
innodb_adaptive_flushing_lwm	Yes	Yes	Yes		Global	Yes
innodb_adaptive_hash_index	Yes	Yes	Yes		Global	Yes
innodb_adaptive_hash_index_parts	Yes	Yes	Yes		Global	No
innodb_adaptive_max_sleep_delay	Yes	Yes	Yes		Global	Yes
innodb_additional_mem_pool_size	Yes	Yes	Yes		Global	No
innodb_api_bk_commit_interval	Yes	Yes	Yes		Global	Yes
innodb_api_disable_rowlock	Yes	Yes	Yes		Global	No
innodb_api_enable_binlog	Yes	Yes	Yes		Global	No
innodb_api_enable_mdl	Yes	Yes	Yes		Global	No
innodb_api_trx_level	Yes	Yes	Yes		Global	Yes
innodb_autoextend_increment	Yes	Yes	Yes		Global	Yes
innodb_autoinc_lock_mode	Yes	Yes	Yes		Global	No
Innodb_available_undo_logs				Yes	Global	No
innodb_background_drop_list_empty	Yes	Yes	Yes		Global	Yes
Innodb_buffer_pool_bytes_data				Yes	Global	No
Innodb_buffer_pool_bytes_dirty				Yes	Global	No
innodb_buffer_pool_chunk_size	Yes	Yes	Yes		Global	No
innodb_buffer_pool_dump_at_shutdown	Yes	Yes	Yes		Global	Yes
innodb_buffer_pool_dump_now	Yes	Yes	Yes		Global	Yes
innodb_buffer_pool_dump_pct	Yes	Yes	Yes		Global	Yes
Innodb_buffer_pool_dump_status				Yes	Global	No
innodb_buffer_pool_filename	Yes	Yes	Yes		Global	Yes
innodb_buffer_pool_instances	Yes	Yes	Yes		Global	No
innodb_buffer_pool_load_abort	Yes	Yes	Yes		Global	Yes
innodb_buffer_pool_load_at_startup	Yes	Yes	Yes		Global	No
innodb_buffer_pool_load_now	Yes	Yes	Yes		Global	Yes
Innodb_buffer_pool_load_status				Yes	Global	No
Innodb_buffer_pool_pages_data				Yes	Global	No
Innodb_buffer_pool_pages_dirty				Yes	Global	No
Innodb_buffer_pool_pages_flushed				Yes	Global	No
Innodb_buffer_pool_pages_free				Yes	Global	No
Innodb_buffer_pool_pages_latched				Yes	Global	No
Innodb_buffer_pool_pages_misc				Yes	Global	No
Innodb_buffer_pool_pages_total				Yes	Global	No
Innodb_buffer_pool_read_ahead				Yes	Global	No
Innodb_buffer_pool_read_ahead_evicted				Yes	Global	No
Innodb_buffer_pool_read_ahead_rnd				Yes	Global	No
Innodb_buffer_pool_read_requests				Yes	Global	No
Innodb_buffer_pool_reads				Yes	Global	No
Innodb_buffer_pool_resize_status				Yes	Global	No
innodb_buffer_pool_size	Yes	Yes	Yes		Global	Varies
Innodb_buffer_pool_wait_free				Yes	Global	No
Innodb_buffer_pool_write_requests				Yes	Global	No
innodb_change_buffer_max_size	Yes	Yes	Yes		Global	Yes
innodb_change_buffering	Yes	Yes	Yes		Global	Yes
innodb_change_buffering_debug	Yes	Yes	Yes		Global	Yes
innodb_checksum_algorithm	Yes	Yes	Yes		Global	Yes
innodb_checksums	Yes	Yes	Yes		Global	No
innodb_cmp_per_index_enabled	Yes	Yes	Yes		Global	Yes
innodb_commit_concurrency	Yes	Yes	Yes		Global	Yes
innodb_compress_debug	Yes	Yes	Yes		Global	Yes
innodb_compression_failure_threshold_pct	Yes	Yes	Yes		Global	Yes
innodb_compression_level	Yes	Yes	Yes		Global	Yes
innodb_compression_pad_pct_max	Yes	Yes	Yes		Global	Yes
innodb_concurrency_tickets	Yes	Yes	Yes		Global	Yes
innodb_create_intrinsic	Yes	Yes	Yes		Session	Yes
innodb_data_file_path	Yes	Yes	Yes		Global	No
Innodb_data_fsyncs				Yes	Global	No
innodb_data_home_dir	Yes	Yes	Yes		Global	No
Innodb_data_pending_fsyncs				Yes	Global	No
Innodb_data_pending_reads				Yes	Global	No
Innodb_data_pending_writes				Yes	Global	No
Innodb_data_read				Yes	Global	No
Innodb_data_reads				Yes	Global	No
Innodb_data_writes				Yes	Global	No
Innodb_data_written				Yes	Global	No
Innodb_dblwr_pages_written				Yes	Global	No
Innodb_dblwr_writes				Yes	Global	No
innodb_deadlock_detect	Yes	Yes	Yes		Global	Yes
innodb_default_row_format	Yes	Yes	Yes		Global	Yes
innodb_disable_resize_buffer_pool_debug	Yes	Yes	Yes		Global	Yes
innodb_disable_sort_file_cache	Yes	Yes	Yes		Global	Yes
innodb_doublewrite	Yes	Yes	Yes		Global	No
innodb_fast_shutdown	Yes	Yes	Yes		Global	Yes
innodb_fil_make_page_dirty_debug	Yes	Yes	Yes		Global	Yes
innodb_file_format	Yes	Yes	Yes		Global	Yes
innodb_file_format_check	Yes	Yes	Yes		Global	No
innodb_file_format_max	Yes	Yes	Yes		Global	Yes
innodb_file_per_table	Yes	Yes	Yes		Global	Yes
innodb_fill_factor	Yes	Yes	Yes		Global	Yes
innodb_flush_log_at_timeout			Yes		Global	Yes
innodb_flush_log_at_trx_commit	Yes	Yes	Yes		Global	Yes
innodb_flush_method	Yes	Yes	Yes		Global	No
innodb_flush_neighbors	Yes	Yes	Yes		Global	Yes
innodb_flush_sync	Yes	Yes	Yes		Global	Yes
innodb_flushing_avg_loops	Yes	Yes	Yes		Global	Yes
innodb_force_load_corrupted	Yes	Yes	Yes		Global	No
innodb_force_recovery	Yes	Yes	Yes		Global	No
innodb_ft_aux_table	Yes	Yes	Yes		Global	Yes
innodb_ft_cache_size	Yes	Yes	Yes		Global	No
innodb_ft_enable_diag_print	Yes	Yes	Yes		Global	Yes
innodb_ft_enable_stopword	Yes	Yes	Yes		Global	Yes
innodb_ft_max_token_size	Yes	Yes	Yes		Global	No
innodb_ft_min_token_size	Yes	Yes	Yes		Global	No
innodb_ft_num_word_optimize	Yes	Yes	Yes		Global	Yes
innodb_ft_result_cache_limit	Yes	Yes	Yes		Global	Yes
innodb_ft_server_stopword_table	Yes	Yes	Yes		Global	Yes
innodb_ft_sort_pll_degree	Yes	Yes	Yes		Global	No
innodb_ft_total_cache_size	Yes	Yes	Yes		Global	No
innodb_ft_user_stopword_table	Yes	Yes	Yes		Both	Yes
Innodb_have_atomic_builtins				Yes	Global	No
innodb_io_capacity	Yes	Yes	Yes		Global	Yes
innodb_io_capacity_max	Yes	Yes	Yes		Global	Yes
innodb_large_prefix	Yes	Yes	Yes		Global	Yes
innodb_limit_optimistic_insert_debug	Yes	Yes	Yes		Global	Yes
innodb_lock_wait_timeout	Yes	Yes	Yes		Both	Yes
innodb_locks_unsafe_for_binlog	Yes	Yes	Yes		Global	No
innodb_log_buffer_size	Yes	Yes	Yes		Global	No
innodb_log_checksum_algorithm	Yes	Yes	Yes		Global	Yes
innodb_log_checksums	Yes	Yes	Yes		Global	Yes
innodb_log_compressed_pages	Yes	Yes	Yes		Global	Yes
innodb_log_file_size	Yes	Yes	Yes		Global	No
innodb_log_files_in_group	Yes	Yes	Yes		Global	No
innodb_log_group_home_dir	Yes	Yes	Yes		Global	No
Innodb_log_waits				Yes	Global	No
innodb_log_write_ahead_size	Yes	Yes	Yes		Global	Yes
Innodb_log_write_requests				Yes	Global	No
Innodb_log_writes				Yes	Global	No
innodb_lru_scan_depth	Yes	Yes	Yes		Global	Yes
innodb_max_dirty_pages_pct	Yes	Yes	Yes		Global	Yes
innodb_max_dirty_pages_pct_lwm	Yes	Yes	Yes		Global	Yes
innodb_max_purge_lag	Yes	Yes	Yes		Global	Yes
innodb_max_purge_lag_delay	Yes	Yes	Yes		Global	Yes
innodb_max_undo_log_size	Yes	Yes	Yes		Global	Yes
innodb_merge_threshold_set_all_debug	Yes	Yes	Yes		Global	Yes
innodb_monitor_disable	Yes	Yes	Yes		Global	Yes
innodb_monitor_enable	Yes	Yes	Yes		Global	Yes
innodb_monitor_reset	Yes	Yes	Yes		Global	Yes
innodb_monitor_reset_all	Yes	Yes	Yes		Global	Yes
Innodb_num_open_files				Yes	Global	No
innodb_numa_interleave	Yes	Yes	Yes		Global	No
innodb_old_blocks_pct	Yes	Yes	Yes		Global	Yes
innodb_old_blocks_time	Yes	Yes	Yes		Global	Yes
innodb_online_alter_log_max_size	Yes	Yes	Yes		Global	Yes
innodb_open_files	Yes	Yes	Yes		Global	No
innodb_optimize_fulltext_only	Yes	Yes	Yes		Global	Yes
innodb_optimize_point_storage	Yes	Yes	Yes		Session	Yes
Innodb_os_log_fsyncs				Yes	Global	No
Innodb_os_log_pending_fsyncs				Yes	Global	No
Innodb_os_log_pending_writes				Yes	Global	No
Innodb_os_log_written				Yes	Global	No
innodb_page_cleaners	Yes	Yes	Yes		Global	No
Innodb_page_size				Yes	Global	No
innodb_page_size	Yes	Yes	Yes		Global	No
Innodb_pages_created				Yes	Global	No
Innodb_pages_read				Yes	Global	No
Innodb_pages_written				Yes	Global	No
innodb_print_all_deadlocks	Yes	Yes	Yes		Global	Yes
innodb_purge_batch_size	Yes	Yes	Yes		Global	Yes
innodb_purge_rseg_truncate_frequency	Yes	Yes	Yes		Global	Yes
innodb_purge_threads	Yes	Yes	Yes		Global	No
innodb_random_read_ahead	Yes	Yes	Yes		Global	Yes
innodb_read_ahead_threshold	Yes	Yes	Yes		Global	Yes
innodb_read_io_threads	Yes	Yes	Yes		Global	No
innodb_read_only	Yes	Yes	Yes		Global	No
innodb_replication_delay	Yes	Yes	Yes		Global	Yes
innodb_rollback_on_timeout	Yes	Yes	Yes		Global	No
innodb_rollback_segments	Yes	Yes	Yes		Global	Yes
Innodb_row_lock_current_waits				Yes	Global	No
Innodb_row_lock_time				Yes	Global	No
Innodb_row_lock_time_avg				Yes	Global	No
Innodb_row_lock_time_max				Yes	Global	No
Innodb_row_lock_waits				Yes	Global	No
Innodb_rows_deleted				Yes	Global	No
Innodb_rows_inserted				Yes	Global	No
Innodb_rows_read				Yes	Global	No
Innodb_rows_updated				Yes	Global	No
innodb_saved_page_number_debug	Yes	Yes	Yes		Global	Yes
innodb_sort_buffer_size	Yes	Yes	Yes		Global	No
innodb_spin_wait_delay	Yes	Yes	Yes		Global	Yes
innodb_stats_auto_recalc	Yes	Yes	Yes		Global	Yes
innodb_stats_include_delete_marked	Yes	Yes	Yes		Global	Yes
innodb_stats_method	Yes	Yes	Yes		Global	Yes
innodb_stats_on_metadata	Yes	Yes	Yes		Global	Yes
innodb_stats_persistent	Yes	Yes	Yes		Global	Yes
innodb_stats_persistent_sample_pages	Yes	Yes	Yes		Global	Yes
innodb_stats_sample_pages	Yes	Yes	Yes		Global	Yes
innodb_stats_transient_sample_pages	Yes	Yes	Yes		Global	Yes
innodb-status-file	Yes	Yes
innodb_status_output	Yes	Yes	Yes		Global	Yes
innodb_status_output_locks	Yes	Yes	Yes		Global	Yes
innodb_strict_mode	Yes	Yes	Yes		Both	Yes
innodb_support_xa	Yes	Yes	Yes		Both	Yes
innodb_sync_array_size	Yes	Yes	Yes		Global	No
innodb_sync_debug	Yes	Yes	Yes		Global	No
innodb_sync_spin_loops	Yes	Yes	Yes		Global	Yes
innodb_table_locks	Yes	Yes	Yes		Both	Yes
innodb_temp_data_file_path	Yes	Yes	Yes		Global	No
innodb_thread_concurrency	Yes	Yes	Yes		Global	Yes
innodb_thread_sleep_delay	Yes	Yes	Yes		Global	Yes
innodb_tmpdir	Yes	Yes	Yes		Both	Yes
Innodb_truncated_status_writes				Yes	Global	No
innodb_trx_purge_view_update_only_debug	Yes	Yes	Yes		Global	Yes
innodb_trx_rseg_n_slots_debug	Yes	Yes	Yes		Global	Yes
innodb_undo_directory	Yes	Yes	Yes		Global	No
innodb_undo_log_truncate	Yes	Yes	Yes		Global	Yes
innodb_undo_logs	Yes	Yes	Yes		Global	Yes
innodb_undo_tablespaces	Yes	Yes	Yes		Global	No
innodb_use_native_aio	Yes	Yes	Yes		Global	No
innodb_use_sys_malloc	Yes	Yes	Yes		Global	No
innodb_version			Yes		Global	No
innodb_write_io_threads	Yes	Yes	Yes		Global	No
insert_id			Yes		Session	Yes
install	Yes
install-manual	Yes
interactive_timeout	Yes	Yes	Yes		Both	Yes
internal_tmp_disk_storage_engine	Yes	Yes	Yes		Global	Yes
join_buffer_size	Yes	Yes	Yes		Both	Yes
keep_files_on_create	Yes	Yes	Yes		Both	Yes
Key_blocks_not_flushed				Yes	Global	No
Key_blocks_unused				Yes	Global	No
Key_blocks_used				Yes	Global	No
key_buffer_size	Yes	Yes	Yes		Global	Yes
key_cache_age_threshold	Yes	Yes	Yes		Global	Yes
key_cache_block_size	Yes	Yes	Yes		Global	Yes
key_cache_division_limit	Yes	Yes	Yes		Global	Yes
Key_read_requests				Yes	Global	No
Key_reads				Yes	Global	No
Key_write_requests				Yes	Global	No
Key_writes				Yes	Global	No
keyring_aws_cmk_id	Yes	Yes	Yes		Global	Yes
keyring_aws_conf_file	Yes	Yes	Yes		Global	No
keyring_aws_data_file	Yes	Yes	Yes		Global	No
keyring_file_data	Yes	Yes	Yes		Global	Yes
keyring_okv_conf_dir	Yes	Yes	Yes		Global	Yes
language	Yes	Yes	Yes		Global	No
large_files_support			Yes		Global	No
large_page_size			Yes		Global	No
large-pages	Yes	Yes			Global	No
- Variable: large_pages			Yes		Global	No
last_insert_id			Yes		Session	Yes
Last_query_cost				Yes	Session	No
Last_query_partial_plans				Yes	Session	No
lc-messages	Yes	Yes			Both	Yes
- Variable: lc_messages			Yes		Both	Yes
lc-messages-dir	Yes	Yes			Global	No
- Variable: lc_messages_dir			Yes		Global	No
lc_time_names			Yes		Both	Yes
license			Yes		Global	No
local_infile			Yes		Global	Yes
local-service	Yes
lock_wait_timeout	Yes	Yes	Yes		Both	Yes
Locked_connects				Yes	Global	No
locked_in_memory			Yes		Global	No
log_backward_compatible_user_definitions	Yes	Yes	Yes		Global	Yes
log-bin	Yes	Yes	Yes		Global	No
log_bin			Yes		Global	No
log_bin_basename			Yes		Global	No
log-bin-index	Yes	Yes
log_bin_index			Yes		Global	No
log-bin-trust-function-creators	Yes	Yes			Global	Yes
- Variable: log_bin_trust_function_creators			Yes		Global	Yes
log-bin-use-v1-row-events	Yes	Yes			Global	No
- Variable: log_bin_use_v1_row_events			Yes		Global	No
log_bin_use_v1_row_events	Yes	Yes	Yes		Global	No
log_builtin_as_identified_by_password	Yes	Yes	Yes		Global	Yes
log-error	Yes	Yes			Global	No
- Variable: log_error			Yes		Global	No
log_error_verbosity	Yes	Yes	Yes		Global	Yes
log-isam	Yes	Yes
log-output	Yes	Yes			Global	Yes
- Variable: log_output			Yes		Global	Yes
log-queries-not-using-indexes	Yes	Yes			Global	Yes
- Variable: log_queries_not_using_indexes			Yes		Global	Yes
log-raw	Yes	Yes
log-short-format	Yes	Yes
log-slave-updates	Yes	Yes			Global	No
- Variable: log_slave_updates			Yes		Global	No
log_slave_updates	Yes	Yes	Yes		Global	No
log-slow-admin-statements	Yes	Yes
log_slow_admin_statements			Yes		Global	Yes
log-slow-slave-statements	Yes	Yes
log_slow_slave_statements			Yes		Global	Yes
log_statements_unsafe_for_binlog			Yes		Global	Yes
log_syslog	Yes	Yes	Yes		Global	Yes
log_syslog_facility	Yes	Yes	Yes		Global	Yes
log_syslog_include_pid	Yes	Yes	Yes		Global	Yes
log_syslog_tag	Yes	Yes	Yes		Global	Yes
log-tc	Yes	Yes
log-tc-size	Yes	Yes
log_throttle_queries_not_using_indexes			Yes		Global	Yes
log_timestamps	Yes	Yes	Yes		Global	Yes
log-warnings	Yes	Yes			Global	Yes
- Variable: log_warnings			Yes		Global	Yes
long_query_time	Yes	Yes	Yes		Both	Yes
low-priority-updates	Yes	Yes			Both	Yes
- Variable: low_priority_updates			Yes		Both	Yes
lower_case_file_system			Yes		Global	No
lower_case_table_names	Yes	Yes	Yes		Global	No
master-info-file	Yes	Yes
master-info-repository	Yes	Yes
- Variable: master_info_repository
master_info_repository	Yes	Yes	Yes		Global	Yes
master-retry-count	Yes	Yes
master-verify-checksum	Yes	Yes
- Variable: master_verify_checksum
master_verify_checksum			Yes		Global	Yes
max_allowed_packet	Yes	Yes	Yes		Both	Yes
max_binlog_cache_size	Yes	Yes	Yes		Global	Yes
max-binlog-dump-events	Yes	Yes
max_binlog_size	Yes	Yes	Yes		Global	Yes
max_binlog_stmt_cache_size	Yes	Yes	Yes		Global	Yes
max_connect_errors	Yes	Yes	Yes		Global	Yes
max_connections	Yes	Yes	Yes		Global	Yes
max_delayed_threads	Yes	Yes	Yes		Both	Yes
max_digest_length	Yes	Yes	Yes		Global	No
max_error_count	Yes	Yes	Yes		Both	Yes
max_execution_time	Yes	Yes	Yes		Both	Yes
Max_execution_time_exceeded				Yes	Both	No
Max_execution_time_set				Yes	Both	No
Max_execution_time_set_failed				Yes	Both	No
max_heap_table_size	Yes	Yes	Yes		Both	Yes
max_insert_delayed_threads			Yes		Both	Yes
max_join_size	Yes	Yes	Yes		Both	Yes
max_length_for_sort_data	Yes	Yes	Yes		Both	Yes
max_points_in_geometry	Yes	Yes	Yes		Global	Yes
max_prepared_stmt_count	Yes	Yes	Yes		Global	Yes
max_relay_log_size	Yes	Yes	Yes		Global	Yes
max_seeks_for_key	Yes	Yes	Yes		Both	Yes
max_sort_length	Yes	Yes	Yes		Both	Yes
max_sp_recursion_depth	Yes	Yes	Yes		Both	Yes
max_statement_time			Yes		Both	Yes
Max_statement_time_exceeded				Yes	Both	No
Max_statement_time_set				Yes	Both	No
Max_statement_time_set_failed				Yes	Both	No
max_tmp_tables			Yes		Both	Yes
Max_used_connections				Yes	Global	No
Max_used_connections_time				Yes	Global	No
max_user_connections	Yes	Yes	Yes		Both	Yes
max_write_lock_count	Yes	Yes	Yes		Global	Yes
mecab_charset				Yes	Global	No
mecab_rc_file	Yes	Yes	Yes		Global	No
memlock	Yes	Yes
- Variable: locked_in_memory
metadata_locks_cache_size			Yes		Global	No
metadata_locks_hash_instances			Yes		Global	No
min-examined-row-limit	Yes	Yes	Yes		Both	Yes
multi_range_count	Yes	Yes	Yes		Both	Yes
myisam-block-size	Yes	Yes
myisam_data_pointer_size	Yes	Yes	Yes		Global	Yes
myisam_max_sort_file_size	Yes	Yes	Yes		Global	Yes
myisam_mmap_size	Yes	Yes	Yes		Global	No
myisam-recover-options	Yes	Yes
- Variable: myisam_recover_options
myisam_recover_options			Yes		Global	No
myisam_repair_threads	Yes	Yes	Yes		Both	Yes
myisam_sort_buffer_size	Yes	Yes	Yes		Both	Yes
myisam_stats_method	Yes	Yes	Yes		Both	Yes
myisam_use_mmap	Yes	Yes	Yes		Global	Yes
mysql_firewall_mode	Yes	Yes	Yes		Global	Yes
mysql_firewall_trace	Yes	Yes	Yes		Global	Yes
mysql_native_password_proxy_users	Yes	Yes	Yes		Global	Yes
Mysqlx_address				Yes	Global	No
mysqlx_bind_address	Yes	Yes	Yes		Global	No
Mysqlx_bytes_received				Yes	Both	No
Mysqlx_bytes_sent				Yes	Both	No
mysqlx_connect_timeout	Yes	Yes	Yes		Global	Yes
Mysqlx_connection_accept_errors				Yes	Both	No
Mysqlx_connection_errors				Yes	Both	No
Mysqlx_connections_accepted				Yes	Global	No
Mysqlx_connections_closed				Yes	Global	No
Mysqlx_connections_rejected				Yes	Global	No
Mysqlx_crud_create_view				Yes	Both	No
Mysqlx_crud_delete				Yes	Both	No
Mysqlx_crud_drop_view				Yes	Both	No
Mysqlx_crud_find				Yes	Both	No
Mysqlx_crud_insert				Yes	Both	No
Mysqlx_crud_modify_view				Yes	Both	No
Mysqlx_crud_update				Yes	Both	No
Mysqlx_errors_sent				Yes	Both	No
Mysqlx_errors_unknown_message_type				Yes	Both	No
Mysqlx_expect_close				Yes	Both	No
Mysqlx_expect_open				Yes	Both	No
mysqlx_idle_worker_thread_timeout	Yes	Yes
Mysqlx_init_error				Yes	Both	No
mysqlx_max_allowed_packet	Yes	Yes
mysqlx_max_connections	Yes	Yes	Yes		Global	Yes
mysqlx_min_worker_threads	Yes	Yes
Mysqlx_notice_other_sent				Yes	Both	No
Mysqlx_notice_warning_sent				Yes	Both	No
Mysqlx_port				Yes	Global	No
mysqlx_port	Yes	Yes	Yes		Global	No
mysqlx_port_open_timeout	Yes	Yes	Yes		Global	No
Mysqlx_rows_sent				Yes	Both	No
Mysqlx_sessions				Yes	Global	No
Mysqlx_sessions_accepted				Yes	Global	No
Mysqlx_sessions_closed				Yes	Global	No
Mysqlx_sessions_fatal_error				Yes	Global	No
Mysqlx_sessions_killed				Yes	Global	No
Mysqlx_sessions_rejected				Yes	Global	No
Mysqlx_socket				Yes	Global	No
mysqlx-socket	Yes	Yes	Yes		Global	No
mysqlx_socket	Yes	Yes	Yes		Global	No
mysqlx_ssl	Yes	Yes	Yes		Global	No
Mysqlx_ssl_accept_renegotiates				Yes	Global	No
Mysqlx_ssl_accepts				Yes	Global	No
Mysqlx_ssl_active				Yes	Both	No
mysqlx_ssl_ca	Yes	Yes	Yes		Global	No
mysqlx_ssl_capath	Yes	Yes	Yes		Global	No
mysqlx_ssl_cert	Yes	Yes	Yes		Global	No
Mysqlx_ssl_cipher				Yes	Both	No
mysqlx_ssl_cipher	Yes	Yes
Mysqlx_ssl_cipher_list				Yes	Both	No
mysqlx_ssl_crl	Yes	Yes	Yes		Global	No
mysqlx_ssl_crlpath	Yes	Yes	Yes		Global	No
Mysqlx_ssl_ctx_verify_depth				Yes	Both	No
Mysqlx_ssl_ctx_verify_mode				Yes	Both	No
Mysqlx_ssl_finished_accepts				Yes	Global	No
mysqlx_ssl_key	Yes	Yes	Yes		Global	No
Mysqlx_ssl_server_not_after				Yes	Global	No
Mysqlx_ssl_server_not_before				Yes	Global	No
Mysqlx_ssl_verify_depth				Yes	Global	No
Mysqlx_ssl_verify_mode				Yes	Global	No
Mysqlx_ssl_version				Yes	Both	No
Mysqlx_stmt_create_collection				Yes	Both	No
Mysqlx_stmt_create_collection_index				Yes	Both	No
Mysqlx_stmt_disable_notices				Yes	Both	No
Mysqlx_stmt_drop_collection				Yes	Both	No
Mysqlx_stmt_drop_collection_index				Yes	Both	No
Mysqlx_stmt_enable_notices				Yes	Both	No
Mysqlx_stmt_ensure_collection				Yes	Both	No
Mysqlx_stmt_execute_mysqlx				Yes	Both	No
Mysqlx_stmt_execute_sql				Yes	Both	No
Mysqlx_stmt_execute_xplugin				Yes	Both	No
Mysqlx_stmt_kill_client				Yes	Both	No
Mysqlx_stmt_list_clients				Yes	Both	No
Mysqlx_stmt_list_notices				Yes	Both	No
Mysqlx_stmt_list_objects				Yes	Both	No
Mysqlx_stmt_ping				Yes	Both	No
Mysqlx_worker_threads				Yes	Global	No
Mysqlx_worker_threads_active				Yes	Global	No
named_pipe			Yes		Global	No
ndb-allow-copying-alter-table	Yes	Yes	Yes		Both	Yes
Ndb_api_bytes_received_count				Yes	Global	No
Ndb_api_bytes_received_count_session				Yes	Session	No
Ndb_api_bytes_received_count_slave				Yes	Global	No
Ndb_api_bytes_sent_count				Yes	Global	No
Ndb_api_bytes_sent_count_slave				Yes	Global	No
Ndb_api_event_bytes_count_injector				Yes	Global	No
Ndb_api_event_data_count_injector				Yes	Global	No
Ndb_api_event_nondata_count_injector				Yes	Global	No
Ndb_api_pk_op_count				Yes	Global	No
Ndb_api_pk_op_count_session				Yes	Session	No
Ndb_api_pk_op_count_slave				Yes	Global	No
Ndb_api_pruned_scan_count				Yes	Global	No
Ndb_api_pruned_scan_count_session				Yes	Session	No
Ndb_api_range_scan_count_slave				Yes	Global	No
Ndb_api_read_row_count				Yes	Global	No
Ndb_api_read_row_count_session				Yes	Session	No
Ndb_api_scan_batch_count_slave				Yes	Global	No
Ndb_api_table_scan_count				Yes	Global	No
Ndb_api_table_scan_count_session				Yes	Session	No
Ndb_api_trans_abort_count				Yes	Global	No
Ndb_api_trans_abort_count_session				Yes	Session	No
Ndb_api_trans_abort_count_slave				Yes	Global	No
Ndb_api_trans_close_count				Yes	Global	No
Ndb_api_trans_close_count_session				Yes	Session	No
Ndb_api_trans_close_count_slave				Yes	Global	No
Ndb_api_trans_commit_count				Yes	Global	No
Ndb_api_trans_commit_count_session				Yes	Session	No
Ndb_api_trans_commit_count_slave				Yes	Global	No
Ndb_api_trans_local_read_row_count_slave				Yes	Global	No
Ndb_api_trans_start_count				Yes	Global	No
Ndb_api_trans_start_count_session				Yes	Session	No
Ndb_api_trans_start_count_slave				Yes	Global	No
Ndb_api_uk_op_count				Yes	Global	No
Ndb_api_uk_op_count_slave				Yes	Global	No
Ndb_api_wait_exec_complete_count				Yes	Global	No
Ndb_api_wait_exec_complete_count_session				Yes	Session	No
Ndb_api_wait_exec_complete_count_slave				Yes	Global	No
Ndb_api_wait_meta_request_count				Yes	Global	No
Ndb_api_wait_meta_request_count_session				Yes	Session	No
Ndb_api_wait_nanos_count				Yes	Global	No
Ndb_api_wait_nanos_count_session				Yes	Session	No
Ndb_api_wait_nanos_count_slave				Yes	Global	No
Ndb_api_wait_scan_result_count				Yes	Global	No
Ndb_api_wait_scan_result_count_session				Yes	Session	No
Ndb_api_wait_scan_result_count_slave				Yes	Global	No
ndb_autoincrement_prefetch_sz	Yes	Yes	Yes		Both	Yes
ndb-batch-size	Yes	Yes	Yes		Global	No
ndb-blob-read-batch-bytes	Yes	Yes	Yes		Both	Yes
ndb-blob-write-batch-bytes	Yes	Yes	Yes		Both	Yes
ndb_cache_check_time	Yes	Yes	Yes		Global	Yes
ndb_clear_apply_status	Yes		Yes		Global	Yes
ndb-cluster-connection-pool	Yes	Yes	Yes		Global	No
ndb-cluster-connection-pool-nodeids	Yes	Yes	Yes		Global	No
Ndb_cluster_node_id				Yes	Both	No
Ndb_config_from_host				Yes	Both	No
Ndb_config_from_port				Yes	Both	No
Ndb_conflict_fn_epoch_trans				Yes	Global	No
Ndb_conflict_fn_max				Yes	Global	No
Ndb_conflict_fn_old				Yes	Global	No
Ndb_conflict_trans_detect_iter_count				Yes	Global	No
Ndb_conflict_trans_row_reject_count				Yes	Global	No
ndb-connectstring	Yes	Yes
ndb_data_node_neighbour	Yes	Yes	Yes		Global	Yes
ndb-default-column-format	Yes	Yes			Global	Yes
- Variable: ndb_default_column_format			Yes		Global	Yes
ndb_default_column_format	Yes	Yes	Yes		Global	Yes
ndb-deferred-constraints	Yes	Yes			Both	Yes
- Variable: ndb_deferred_constraints			Yes		Both	Yes
ndb_deferred_constraints	Yes	Yes	Yes		Both	Yes
ndb-distribution	Yes	Yes			Global	Yes
- Variable: ndb_distribution			Yes		Global	Yes
ndb_distribution	Yes	Yes	Yes		Global	Yes
ndb_eventbuffer_free_percent	Yes	Yes	Yes		Global	Yes
ndb_eventbuffer_max_alloc	Yes	Yes	Yes		Global	Yes
ndb_extra_logging	Yes	Yes	Yes		Global	Yes
ndb_force_send	Yes	Yes	Yes		Both	Yes
ndb_fully_replicated	Yes	Yes	Yes		Both	Yes
ndb_index_stat_enable	Yes	Yes	Yes		Both	Yes
ndb_index_stat_option	Yes	Yes	Yes		Both	Yes
ndb_join_pushdown			Yes		Both	Yes
Ndb_last_commit_epoch_server				Yes	Global	No
Ndb_last_commit_epoch_session				Yes	Session	No
ndb-log-apply-status	Yes	Yes			Global	No
- Variable: ndb_log_apply_status			Yes		Global	No
ndb_log_apply_status	Yes	Yes	Yes		Global	No
ndb_log_bin	Yes		Yes		Both	Yes
ndb_log_binlog_index	Yes		Yes		Global	Yes
ndb-log-empty-epochs	Yes	Yes	Yes		Global	Yes
ndb_log_empty_epochs	Yes	Yes	Yes		Global	Yes
ndb-log-empty-update	Yes	Yes	Yes		Global	Yes
ndb_log_empty_update	Yes	Yes	Yes		Global	Yes
ndb-log-exclusive-reads	Yes	Yes			Both	Yes
- Variable: ndb_log_exclusive_reads			Yes		Both	Yes
ndb_log_exclusive_reads	Yes	Yes	Yes		Both	Yes
ndb-log-orig	Yes	Yes			Global	No
- Variable: ndb_log_orig			Yes		Global	No
ndb_log_orig	Yes	Yes	Yes		Global	No
ndb-log-transaction-id	Yes	Yes			Global	No
- Variable: ndb_log_transaction_id			Yes		Global	No
ndb_log_transaction_id			Yes		Global	No
ndb-log-update-minimal	Yes	Yes	Yes		Global	Yes
ndb_log_updated_only	Yes	Yes	Yes		Global	Yes
ndb-mgmd-host	Yes	Yes
ndb-nodeid	Yes	Yes		Yes	Global	No
Ndb_number_of_data_nodes				Yes	Global	No
ndb_optimization_delay			Yes		Global	Yes
ndb_optimized_node_selection	Yes	Yes	Yes		Global	No
Ndb_pushed_queries_defined				Yes	Global	No
Ndb_pushed_queries_executed				Yes	Global	No
ndb_read_backup	Yes	Yes	Yes		Global	Yes
ndb-recv-thread-activation-threshold	Yes	Yes
- Variable: ndb_recv_thread_activation_threshold
ndb_recv_thread_activation_threshold
ndb-recv-thread-cpu-mask	Yes	Yes
- Variable: ndb_recv_thread_cpu_mask
ndb_recv_thread_cpu_mask			Yes		Global	Yes
ndb_report_thresh_binlog_epoch_slip	Yes	Yes	Yes		Global	Yes
ndb_report_thresh_binlog_mem_usage	Yes	Yes	Yes		Global	Yes
Ndb_scan_count				Yes	Global	No
ndb_show_foreign_key_mock_tables	Yes	Yes	Yes		Global	Yes
ndb_slave_conflict_role	Yes	Yes	Yes		Global	Yes
Ndb_slave_max_replicated_epoch			Yes		Global	No
Ndb_system_name			Yes		Global	No
ndb_table_no_logging			Yes		Session	Yes
ndb_table_temporary			Yes		Session	Yes
ndb-transid-mysql-connection-map	Yes
ndb_use_copying_alter_table			Yes		Both	No
ndb_use_exact_count			Yes		Both	Yes
ndb_use_transactions	Yes	Yes	Yes		Both	Yes
ndb_version			Yes		Global	No
ndb_version_string			Yes		Global	No
ndb-wait-connected	Yes	Yes	Yes		Global	No
ndb-wait-setup	Yes	Yes	Yes		Global	No
ndbcluster	Yes	Yes
ndbinfo_database			Yes		Global	No
ndbinfo_max_bytes	Yes		Yes		Both	Yes
ndbinfo_max_rows	Yes		Yes		Both	Yes
ndbinfo_offline			Yes		Global	Yes
ndbinfo_show_hidden	Yes		Yes		Both	Yes
ndbinfo_table_prefix	Yes		Yes		Both	Yes
ndbinfo_version			Yes		Global	No
net_buffer_length	Yes	Yes	Yes		Both	Yes
net_read_timeout	Yes	Yes	Yes		Both	Yes
net_retry_count	Yes	Yes	Yes		Both	Yes
net_write_timeout	Yes	Yes	Yes		Both	Yes
new	Yes	Yes	Yes		Both	Yes
ngram_token_size	Yes	Yes	Yes		Global	No
no-defaults	Yes
Not_flushed_delayed_rows				Yes	Global	No
offline_mode	Yes	Yes	Yes		Global	Yes
old	Yes	Yes	Yes		Global	No
old-alter-table	Yes	Yes			Both	Yes
- Variable: old_alter_table			Yes		Both	Yes
old_passwords			Yes		Both	Yes
old-style-user-limits	Yes	Yes
Ongoing_anonymous_gtid_violating_transaction_count				Yes	Global	No
Ongoing_anonymous_transaction_count				Yes	Global	No
Ongoing_automatic_gtid_violating_transaction_count				Yes	Global	No
Open_files				Yes	Global	No
open-files-limit	Yes	Yes			Global	No
- Variable: open_files_limit			Yes		Global	No
Open_streams				Yes	Global	No
Open_table_definitions				Yes	Global	No
Open_tables				Yes	Both	No
Opened_files				Yes	Global	No
Opened_table_definitions				Yes	Both	No
Opened_tables				Yes	Both	No
optimizer_prune_level	Yes	Yes	Yes		Both	Yes
optimizer_search_depth	Yes	Yes	Yes		Both	Yes
optimizer_switch	Yes	Yes	Yes		Both	Yes
optimizer_trace			Yes		Both	Yes
optimizer_trace_features			Yes		Both	Yes
optimizer_trace_limit			Yes		Both	Yes
optimizer_trace_max_mem_size			Yes		Both	Yes
optimizer_trace_offset			Yes		Both	Yes
parser_max_mem_size	Yes	Yes	Yes		Both	Yes
partition	Yes	Yes
performance_schema	Yes	Yes	Yes		Global	No
Performance_schema_accounts_lost				Yes	Global	No
performance_schema_accounts_size	Yes	Yes	Yes		Global	No
Performance_schema_cond_classes_lost				Yes	Global	No
Performance_schema_cond_instances_lost				Yes	Global	No
performance-schema-consumer-events-stages-current	Yes	Yes
performance-schema-consumer-events-stages-history	Yes	Yes
performance-schema-consumer-events-stages-history-long	Yes	Yes
performance-schema-consumer-events-statements-current	Yes	Yes
performance-schema-consumer-events-statements-history	Yes	Yes
performance-schema-consumer-events-statements-history-long	Yes	Yes
performance-schema-consumer-events-transactions-current	Yes	Yes
performance-schema-consumer-events-transactions-history	Yes	Yes
performance-schema-consumer-events-transactions-history-long	Yes	Yes
performance-schema-consumer-events-waits-current	Yes	Yes
performance-schema-consumer-events-waits-history	Yes	Yes
performance-schema-consumer-events-waits-history-long	Yes	Yes
performance-schema-consumer-global-instrumentation	Yes	Yes
performance-schema-consumer-statements-digest	Yes	Yes
performance-schema-consumer-thread-instrumentation	Yes	Yes
Performance_schema_digest_lost				Yes	Global	No
performance_schema_digests_size	Yes	Yes	Yes		Global	No
performance_schema_events_stages_history_long_size	Yes	Yes	Yes		Global	No
performance_schema_events_stages_history_size	Yes	Yes	Yes		Global	No
performance_schema_events_statements_history_long_size	Yes	Yes	Yes		Global	No
performance_schema_events_statements_history_size	Yes	Yes	Yes		Global	No
performance_schema_events_transactions_history_long_size	Yes	Yes	Yes		Global	No
performance_schema_events_transactions_history_size	Yes	Yes	Yes		Global	No
performance_schema_events_waits_history_long_size	Yes	Yes	Yes		Global	No
performance_schema_events_waits_history_size	Yes	Yes	Yes		Global	No
Performance_schema_file_classes_lost				Yes	Global	No
Performance_schema_file_handles_lost				Yes	Global	No
Performance_schema_file_instances_lost				Yes	Global	No
Performance_schema_hosts_lost				Yes	Global	No
performance_schema_hosts_size	Yes	Yes	Yes		Global	No
Performance_schema_index_stat_lost				Yes	Global	No
performance-schema-instrument	Yes	Yes
Performance_schema_locker_lost				Yes	Global	No
performance_schema_max_cond_classes	Yes	Yes	Yes		Global	No
performance_schema_max_cond_instances	Yes	Yes	Yes		Global	No
performance_schema_max_digest_length	Yes	Yes	Yes		Global	No
performance_schema_max_file_classes	Yes	Yes	Yes		Global	No
performance_schema_max_file_handles	Yes	Yes	Yes		Global	No
performance_schema_max_file_instances	Yes	Yes	Yes		Global	No
performance_schema_max_index_stat	Yes	Yes	Yes		Global	No
performance_schema_max_memory_classes	Yes	Yes	Yes		Global	No
performance_schema_max_metadata_locks	Yes	Yes	Yes		Global	No
performance_schema_max_mutex_classes	Yes	Yes	Yes		Global	No
performance_schema_max_mutex_instances	Yes	Yes	Yes		Global	No
performance_schema_max_prepared_statements_instances	Yes	Yes	Yes		Global	No
performance_schema_max_program_instances	Yes	Yes	Yes		Global	No
performance_schema_max_rwlock_classes	Yes	Yes	Yes		Global	No
performance_schema_max_rwlock_instances	Yes	Yes	Yes		Global	No
performance_schema_max_socket_classes	Yes	Yes	Yes		Global	No
performance_schema_max_socket_instances	Yes	Yes	Yes		Global	No
performance_schema_max_sql_text_length	Yes	Yes	Yes		Global	No
performance_schema_max_stage_classes	Yes	Yes	Yes		Global	No
performance_schema_max_statement_classes	Yes	Yes	Yes		Global	No
performance_schema_max_statement_stack	Yes	Yes	Yes		Global	No
performance_schema_max_table_handles	Yes	Yes	Yes		Global	No
performance_schema_max_table_instances	Yes	Yes	Yes		Global	No
performance_schema_max_table_lock_stat	Yes	Yes	Yes		Global	No
performance_schema_max_thread_classes	Yes	Yes	Yes		Global	No
performance_schema_max_thread_instances	Yes	Yes	Yes		Global	No
Performance_schema_memory_classes_lost				Yes	Global	No
Performance_schema_metadata_lock_lost				Yes	Global	No
Performance_schema_mutex_classes_lost				Yes	Global	No
Performance_schema_mutex_instances_lost				Yes	Global	No
Performance_schema_nested_statement_lost				Yes	Global	No
Performance_schema_prepared_statements_lost				Yes	Global	No
Performance_schema_program_lost				Yes	Global	No
Performance_schema_rwlock_classes_lost				Yes	Global	No
Performance_schema_rwlock_instances_lost				Yes	Global	No
Performance_schema_session_connect_attrs_lost				Yes	Global	No
performance_schema_session_connect_attrs_size	Yes	Yes	Yes		Global	No
performance_schema_setup_actors_size	Yes	Yes	Yes		Global	No
performance_schema_setup_objects_size	Yes	Yes	Yes		Global	No
Performance_schema_socket_classes_lost				Yes	Global	No
Performance_schema_socket_instances_lost				Yes	Global	No
Performance_schema_stage_classes_lost				Yes	Global	No
Performance_schema_statement_classes_lost				Yes	Global	No
Performance_schema_table_handles_lost				Yes	Global	No
Performance_schema_table_instances_lost				Yes	Global	No
Performance_schema_table_lock_stat_lost				Yes	Global	No
Performance_schema_thread_classes_lost				Yes	Global	No
Performance_schema_thread_instances_lost				Yes	Global	No
Performance_schema_users_lost				Yes	Global	No
performance_schema_users_size	Yes	Yes	Yes		Global	No
pid-file	Yes	Yes			Global	No
- Variable: pid_file			Yes		Global	No
plugin	Yes	Yes
plugin_dir	Yes	Yes	Yes		Global	No
plugin-load	Yes	Yes
plugin-load-add	Yes	Yes
port	Yes	Yes	Yes		Global	No
port-open-timeout	Yes	Yes
preload_buffer_size	Yes	Yes	Yes		Both	Yes
Prepared_stmt_count				Yes	Global	No
print-defaults	Yes
profiling			Yes		Both	Yes
profiling_history_size	Yes	Yes	Yes		Both	Yes
protocol_version			Yes		Global	No
proxy_user			Yes		Session	No
pseudo_slave_mode			Yes		Session	Yes
pseudo_thread_id			Yes		Session	Yes
Qcache_free_blocks				Yes	Global	No
Qcache_free_memory				Yes	Global	No
Qcache_hits				Yes	Global	No
Qcache_inserts				Yes	Global	No
Qcache_lowmem_prunes				Yes	Global	No
Qcache_not_cached				Yes	Global	No
Qcache_queries_in_cache				Yes	Global	No
Qcache_total_blocks				Yes	Global	No
Queries				Yes	Both	No
query_alloc_block_size	Yes	Yes	Yes		Both	Yes
query_cache_limit	Yes	Yes	Yes		Global	Yes
query_cache_min_res_unit	Yes	Yes	Yes		Global	Yes
query_cache_size	Yes	Yes	Yes		Global	Yes
query_cache_type	Yes	Yes	Yes		Both	Yes
query_cache_wlock_invalidate	Yes	Yes	Yes		Both	Yes
query_prealloc_size	Yes	Yes	Yes		Both	Yes
Questions				Yes	Both	No
rand_seed1			Yes		Session	Yes
rand_seed2			Yes		Session	Yes
range_alloc_block_size	Yes	Yes	Yes		Both	Yes
range_optimizer_max_mem_size	Yes	Yes	Yes		Both	Yes
rbr_exec_mode			Yes		Session	Yes
read_buffer_size	Yes	Yes	Yes		Both	Yes
read_only	Yes	Yes	Yes		Global	Yes
read_rnd_buffer_size	Yes	Yes	Yes		Both	Yes
relay-log	Yes	Yes			Global	No
- Variable: relay_log			Yes		Global	No
relay_log_basename			Yes		Global	No
relay-log-index	Yes	Yes			Global	No
- Variable: relay_log_index			Yes		Global	No
relay_log_index	Yes	Yes	Yes		Global	No
relay-log-info-file	Yes	Yes
- Variable: relay_log_info_file
relay_log_info_file	Yes	Yes	Yes		Global	No
relay-log-info-repository	Yes	Yes
- Variable: relay_log_info_repository
relay_log_info_repository			Yes		Global	Yes
relay_log_purge	Yes	Yes	Yes		Global	Yes
relay-log-recovery	Yes	Yes
- Variable: relay_log_recovery
relay_log_recovery	Yes	Yes	Yes		Global	No
relay_log_space_limit	Yes	Yes	Yes		Global	No
remove	Yes
replicate-do-db	Yes	Yes
replicate-do-table	Yes	Yes
replicate-ignore-db	Yes	Yes
replicate-ignore-table	Yes	Yes
replicate-rewrite-db	Yes	Yes
replicate-same-server-id	Yes	Yes
replicate-wild-do-table	Yes	Yes
replicate-wild-ignore-table	Yes	Yes
report-host	Yes	Yes			Global	No
- Variable: report_host			Yes		Global	No
report-password	Yes	Yes			Global	No
- Variable: report_password			Yes		Global	No
report-port	Yes	Yes			Global	No
- Variable: report_port			Yes		Global	No
report-user	Yes	Yes			Global	No
- Variable: report_user			Yes		Global	No
require_secure_transport	Yes	Yes	Yes		Global	Yes
rewriter_enabled			Yes		Global	Yes
Rewriter_number_loaded_rules				Yes	Global	No
Rewriter_number_reloads				Yes	Global	No
Rewriter_number_rewritten_queries				Yes	Global	No
Rewriter_reload_error				Yes	Global	No
rewriter_verbose			Yes		Global	Yes
Rpl_semi_sync_master_clients				Yes	Global	No
rpl_semi_sync_master_enabled			Yes		Global	Yes
Rpl_semi_sync_master_net_avg_wait_time				Yes	Global	No
Rpl_semi_sync_master_net_wait_time				Yes	Global	No
Rpl_semi_sync_master_net_waits				Yes	Global	No
Rpl_semi_sync_master_no_times				Yes	Global	No
Rpl_semi_sync_master_no_tx				Yes	Global	No
Rpl_semi_sync_master_status				Yes	Global	No
Rpl_semi_sync_master_timefunc_failures				Yes	Global	No
rpl_semi_sync_master_timeout			Yes		Global	Yes
rpl_semi_sync_master_trace_level			Yes		Global	Yes
Rpl_semi_sync_master_tx_avg_wait_time				Yes	Global	No
Rpl_semi_sync_master_tx_wait_time				Yes	Global	No
Rpl_semi_sync_master_tx_waits				Yes	Global	No
rpl_semi_sync_master_wait_for_slave_count			Yes		Global	Yes
rpl_semi_sync_master_wait_no_slave			Yes		Global	Yes
rpl_semi_sync_master_wait_point			Yes		Global	Yes
Rpl_semi_sync_master_wait_pos_backtraverse				Yes	Global	No
Rpl_semi_sync_master_wait_sessions				Yes	Global	No
Rpl_semi_sync_master_yes_tx				Yes	Global	No
rpl_semi_sync_slave_enabled			Yes		Global	Yes
Rpl_semi_sync_slave_status				Yes	Global	No
rpl_semi_sync_slave_trace_level			Yes		Global	Yes
rpl_stop_slave_timeout	Yes	Yes	Yes		Global	Yes
Rsa_public_key				Yes	Global	No
safe-user-create	Yes	Yes
secure-auth	Yes	Yes			Global	Yes
- Variable: secure_auth			Yes		Global	Yes
secure-file-priv	Yes	Yes			Global	No
- Variable: secure_file_priv			Yes		Global	No
Select_full_join				Yes	Both	No
Select_full_range_join				Yes	Both	No
Select_range				Yes	Both	No
Select_range_check				Yes	Both	No
Select_scan				Yes	Both	No
server-id	Yes	Yes			Global	Yes
- Variable: server_id			Yes		Global	Yes
server-id-bits	Yes	Yes			Global	No
- Variable: server_id_bits			Yes		Global	No
server_id_bits	Yes	Yes	Yes		Global	No
server_uuid			Yes		Global	No
session_track_gtids	Yes	Yes	Yes		Both	Yes
session_track_schema	Yes	Yes	Yes		Both	Yes
session_track_state_change	Yes	Yes	Yes		Both	Yes
session_track_system_variables	Yes	Yes	Yes		Both	Yes
sha256_password_auto_generate_rsa_keys	Yes	Yes	Yes		Global	No
sha256_password_private_key_path			Yes		Global	No
sha256_password_proxy_users	Yes	Yes	Yes		Global	Yes
sha256_password_public_key_path			Yes		Global	No
shared_memory	Yes	Yes	Yes		Global	No
shared_memory_base_name	Yes	Yes	Yes		Global	No
show_compatibility_56	Yes	Yes	Yes		Global	Yes
show_old_temporals	Yes	Yes	Yes		Both	Yes
show-slave-auth-info	Yes	Yes
simplified_binlog_gtid_recovery	Yes	Yes	Yes		Global	No
skip-character-set-client-handshake	Yes	Yes
skip-concurrent-insert	Yes	Yes
- Variable: concurrent_insert
skip-event-scheduler	Yes	Yes
skip_external_locking	Yes	Yes	Yes		Global	No
skip-grant-tables	Yes	Yes
skip-host-cache	Yes	Yes
skip-name-resolve	Yes	Yes			Global	No
- Variable: skip_name_resolve			Yes		Global	No
skip-ndbcluster	Yes	Yes
skip-networking	Yes	Yes			Global	No
- Variable: skip_networking			Yes		Global	No
skip-new	Yes	Yes
skip-partition	Yes	Yes
skip-show-database	Yes	Yes			Global	No
- Variable: skip_show_database			Yes		Global	No
skip-slave-start	Yes	Yes
skip-ssl	Yes	Yes
skip-stack-trace	Yes	Yes
slave_allow_batching	Yes	Yes	Yes		Global	Yes
slave-checkpoint-group	Yes	Yes
- Variable: slave_checkpoint_group
slave_checkpoint_group	Yes	Yes	Yes		Global	Yes
slave-checkpoint-period	Yes	Yes
- Variable: slave_checkpoint_period
slave_checkpoint_period	Yes	Yes	Yes		Global	Yes
slave_compressed_protocol	Yes	Yes	Yes		Global	Yes
slave_exec_mode	Yes	Yes	Yes		Global	Yes
Slave_heartbeat_period				Yes	Global	No
Slave_last_heartbeat				Yes	Global	No
slave-load-tmpdir	Yes	Yes			Global	No
- Variable: slave_load_tmpdir			Yes		Global	No
slave-max-allowed-packet	Yes	Yes
- Variable: slave_max_allowed_packet
slave_max_allowed_packet			Yes		Global	Yes
slave-net-timeout	Yes	Yes			Global	Yes
- Variable: slave_net_timeout			Yes		Global	Yes
Slave_open_temp_tables				Yes	Global	No
slave-parallel-type	Yes	Yes
- Variable: slave_parallel_type
slave_parallel_type			Yes		Global	Yes
slave-parallel-workers	Yes	Yes
- Variable: slave_parallel_workers
slave_parallel_workers	Yes		Yes		Global	Yes
slave-pending-jobs-size-max	Yes
- Variable: slave_pending_jobs_size_max
slave_pending_jobs_size_max			Yes		Global	Yes
slave_preserve_commit_order	Yes		Yes		Global	Yes
Slave_received_heartbeats				Yes	Global	No
Slave_retried_transactions				Yes	Global	No
Slave_rows_last_search_algorithm_used				Yes	Global	No
slave-rows-search-algorithms	Yes	Yes
- Variable: slave_rows_search_algorithms
slave_rows_search_algorithms			Yes		Global	Yes
Slave_running				Yes	Global	No
slave-skip-errors	Yes	Yes			Global	No
- Variable: slave_skip_errors			Yes		Global	No
slave-sql-verify-checksum	Yes	Yes
slave_sql_verify_checksum			Yes		Global	Yes
slave_transaction_retries	Yes	Yes	Yes		Global	Yes
slave_type_conversions	Yes	Yes	Yes		Global	No
Slow_launch_threads				Yes	Both	No
slow_launch_time	Yes	Yes	Yes		Global	Yes
Slow_queries				Yes	Both	No
slow-query-log	Yes	Yes			Global	Yes
- Variable: slow_query_log			Yes		Global	Yes
slow_query_log_file	Yes	Yes	Yes		Global	Yes
slow-start-timeout	Yes	Yes
socket	Yes	Yes	Yes		Global	No
sort_buffer_size	Yes	Yes	Yes		Both	Yes
Sort_merge_passes				Yes	Both	No
Sort_range				Yes	Both	No
Sort_rows				Yes	Both	No
Sort_scan				Yes	Both	No
sporadic-binlog-dump-fail	Yes	Yes
sql_auto_is_null			Yes		Both	Yes
sql_big_selects			Yes		Both	Yes
sql_buffer_result			Yes		Both	Yes
sql_log_bin			Yes		Session	Yes
sql_log_off			Yes		Both	Yes
sql-mode	Yes	Yes			Both	Yes
- Variable: sql_mode			Yes		Both	Yes
sql_notes			Yes		Both	Yes
sql_quote_show_create			Yes		Both	Yes
sql_safe_updates			Yes		Both	Yes
sql_select_limit			Yes		Both	Yes
sql_slave_skip_counter			Yes		Global	Yes
sql_warnings			Yes		Both	Yes
ssl	Yes	Yes
Ssl_accept_renegotiates				Yes	Global	No
Ssl_accepts				Yes	Global	No
ssl-ca	Yes	Yes			Global	No
- Variable: ssl_ca			Yes		Global	No
Ssl_callback_cache_hits				Yes	Global	No
ssl-capath	Yes	Yes			Global	No
- Variable: ssl_capath			Yes		Global	No
ssl-cert	Yes	Yes			Global	No
- Variable: ssl_cert			Yes		Global	No
Ssl_cipher				Yes	Both	No
ssl-cipher	Yes	Yes			Global	No
- Variable: ssl_cipher			Yes		Global	No
Ssl_cipher_list				Yes	Both	No
Ssl_client_connects				Yes	Global	No
Ssl_connect_renegotiates				Yes	Global	No
ssl-crl	Yes	Yes			Global	No
- Variable: ssl_crl			Yes		Global	No
ssl-crlpath	Yes	Yes			Global	No
- Variable: ssl_crlpath			Yes		Global	No
Ssl_ctx_verify_depth				Yes	Global	No
Ssl_ctx_verify_mode				Yes	Global	No
Ssl_default_timeout				Yes	Both	No
Ssl_finished_accepts				Yes	Global	No
Ssl_finished_connects				Yes	Global	No
ssl-key	Yes	Yes			Global	No
- Variable: ssl_key			Yes		Global	No
Ssl_server_not_after				Yes	Both	No
Ssl_server_not_before				Yes	Both	No
Ssl_session_cache_hits				Yes	Global	No
Ssl_session_cache_misses				Yes	Global	No
Ssl_session_cache_mode				Yes	Global	No
Ssl_session_cache_overflows				Yes	Global	No
Ssl_session_cache_size				Yes	Global	No
Ssl_session_cache_timeouts				Yes	Global	No
Ssl_sessions_reused				Yes	Both	No
Ssl_used_session_cache_entries				Yes	Global	No
Ssl_verify_depth				Yes	Both	No
Ssl_verify_mode				Yes	Both	No
Ssl_version				Yes	Both	No
standalone	Yes	Yes
storage_engine			Yes		Both	Yes
stored_program_cache	Yes	Yes	Yes		Global	Yes
super-large-pages	Yes	Yes
super_read_only	Yes	Yes	Yes		Global	Yes
symbolic-links	Yes	Yes
sync_binlog	Yes	Yes	Yes		Global	Yes
sync_frm	Yes	Yes	Yes		Global	Yes
sync_master_info	Yes	Yes	Yes		Global	Yes
sync_relay_log	Yes	Yes	Yes		Global	Yes
sync_relay_log_info	Yes	Yes	Yes		Global	Yes
sysdate-is-now	Yes	Yes
system_time_zone			Yes		Global	No
table_definition_cache			Yes		Global	Yes
Table_locks_immediate				Yes	Global	No
Table_locks_waited				Yes	Global	No
table_open_cache			Yes		Global	Yes
Table_open_cache_hits				Yes	Both	No
table_open_cache_instances			Yes		Global	No
Table_open_cache_misses				Yes	Both	No
Table_open_cache_overflows				Yes	Both	No
tc-heuristic-recover	Yes	Yes
Tc_log_max_pages_used				Yes	Global	No
Tc_log_page_size				Yes	Global	No
Tc_log_page_waits				Yes	Global	No
temp-pool	Yes	Yes
thread_cache_size	Yes	Yes	Yes		Global	Yes
thread_concurrency	Yes	Yes	Yes		Global	No
thread_handling	Yes	Yes	Yes		Global	No
thread_pool_algorithm	Yes	Yes	Yes		Global	No
thread_pool_high_priority_connection	Yes	Yes	Yes		Both	Yes
thread_pool_max_unused_threads	Yes	Yes	Yes		Global	Yes
thread_pool_prio_kickup_timer	Yes	Yes	Yes		Both	Yes
thread_pool_size	Yes	Yes	Yes		Global	No
thread_pool_stall_limit	Yes	Yes	Yes		Global	Yes
thread_stack	Yes	Yes	Yes		Global	No
Threads_cached				Yes	Global	No
Threads_connected				Yes	Global	No
Threads_created				Yes	Global	No
Threads_running				Yes	Global	No
time_format			Yes		Global	No
time_zone			Yes		Both	Yes
timed_mutexes	Yes	Yes	Yes		Global	Yes
timestamp			Yes		Session	Yes
tls_version	Yes	Yes	Yes		Global	No
tmp_table_size	Yes	Yes	Yes		Both	Yes
tmpdir	Yes	Yes	Yes		Global	No
transaction_alloc_block_size	Yes	Yes	Yes		Both	Yes
transaction_allow_batching			Yes		Session	Yes
transaction-isolation	Yes	Yes			Both	Yes
- Variable: tx_isolation			Yes		Both	Yes
transaction_prealloc_size	Yes	Yes	Yes		Both	Yes
transaction-read-only	Yes	Yes			Both	Yes
- Variable: tx_read_only			Yes		Both	Yes
transaction_write_set_extraction	Yes		Yes		Both	Yes
tx_isolation			Yes		Both	Yes
tx_read_only			Yes		Both	Yes
unique_checks			Yes		Both	Yes
updatable_views_with_limit	Yes	Yes	Yes		Both	Yes
Uptime				Yes	Global	No
Uptime_since_flush_status				Yes	Global	No
user	Yes	Yes
validate-password	Yes	Yes
validate_password_check_user_name	Yes	Yes	Yes		Global	Yes
validate_password_dictionary_file			Yes		Global	Varies
validate_password_dictionary_file_last_parsed				Yes	Global	No
validate_password_dictionary_file_words_count				Yes	Global	No
validate_password_length			Yes		Global	Yes
validate_password_mixed_case_count			Yes		Global	Yes
validate_password_number_count			Yes		Global	Yes
validate_password_policy			Yes		Global	Yes
validate_password_special_char_count			Yes		Global	Yes
validate_user_plugins			Yes		Global	No
verbose	Yes	Yes
version			Yes		Global	No
version_comment			Yes		Global	No
version_compile_machine			Yes		Global	No
version_compile_os			Yes		Global	No
version_tokens_session	Yes	Yes	Yes		Both	Yes
version_tokens_session_number	Yes	Yes	Yes		Both	No
wait_timeout	Yes	Yes	Yes		Both	Yes
warning_count			Yes		Session	No

^[a]This option is dynamic, but only the server should set this information. You should not set the value of this variable manually.

^[b]This option is dynamic, but only the server should set this information. You should not set the value of this variable manually.

5.1.4 Server Command Options

When you start the mysqld server, you can specify program options using any of the methods described inSection 4.2.3, "Specifying Program Options". The most common methods are to provide options in an option file or on the command line. However, in most cases it is desirable to make sure that the server uses the same options each time it runs. The best way to ensure this is to list them in an option file. See Section 4.2.6, "Using Option Files". That section also describes option file format and syntax.

mysqld reads options from the [mysqld] and [server] groups. mysqld_safe reads options from the[mysqld], [server], [mysqld_safe], and [safe_mysqld] groups. mysql.server reads options from the[mysqld] and [mysql.server] groups.

An embedded MySQL server usually reads options from the [server], [embedded], and [xxxxx_SERVER]groups, where xxxxx is the name of the application into which the server is embedded.

mysqld accepts many command options. For a brief summary, execute this command:

mysqld --help

To see the full list, use this command:

mysqld --verbose --help

Some of the items in the list are actually system variables that can be set at server startup. These can be displayed at runtime using the SHOW VARIABLES statement. Some items displayed by the preceding mysqldcommand do not appear in SHOW VARIABLES output; this is because they are options only and not system variables.

The following list shows some of the most common server options. Additional options are described in other sections:

Options that affect security: See Section 6.1.4, "Security-Related mysqld Options and Variables".
SSL-related options: See Section 6.4.2, "Command Options for Encrypted Connections".
Binary log control options: See Section 5.4.4, "The Binary Log".
Replication-related options: See Section 16.1.6, "Replication and Binary Logging Options and Variables".
Options for loading plugins such as pluggable storage engines: See Section 5.5.1, "Installing and Uninstalling Plugins".
Options specific to particular storage engines: See Section 14.14, "InnoDB Startup Options and System Variables"and Section 15.2.1, "MyISAM Startup Options".

Some options control the size of buffers or caches. For a given buffer, the server might need to allocate internal data structures. These structures typically are allocated from the total memory allocated to the buffer, and the amount of space required might be platform dependent. This means that when you assign a value to an option that controls a buffer size, the amount of space actually available might differ from the value assigned. In some cases, the amount might be less than the value assigned. It is also possible that the server will adjust a value upward. For example, if you assign a value of 0 to an option for which the minimal value is 1024, the server will set the value to 1024.

Values for buffer sizes, lengths, and stack sizes are given in bytes unless otherwise specified.

Some options take file name values. Unless otherwise specified, the default file location is the data directory if the value is a relative path name. To specify the location explicitly, use an absolute path name. Suppose that the data directory is /var/mysql/data. If a file-valued option is given as a relative path name, it will be located under/var/mysql/data. If the value is an absolute path name, its location is as given by the path name.

You can also set the values of server system variables at server startup by using variable names as options. To assign a value to a server system variable, use an option of the form --var_name=value. For example, --sort_buffer_size=384M sets the sort_buffer_size variable to a value of 384MB.

When you assign a value to a variable, MySQL might automatically correct the value to stay within a given range, or adjust the value to the closest permissible value if only certain values are permitted.

To restrict the maximum value to which a system variable can be set at runtime with the SET statement, specify this maximum by using an option of the form --maximum-var_name=value at server startup.

You can change the values of most system variables at runtime with the SET statement. See Section 13.7.4.1, "SET Syntax for Variable Assignment".

Section 5.1.5, "Server System Variables", provides a full description for all variables, and additional information for setting them at server startup and runtime. For information on changing system variables, see Section 5.1.1, "Configuring the Server".

--help, -?

Command-Line Format

--help

Display a short help message and exit. Use both the --verbose and --help options to see the full message.
--allow-suspicious-udfs

Command-Line Format	--allow-suspicious-udfs
Permitted Values	Type	boolean
Permitted Values	Default	FALSE

This option controls whether user-defined functions that have only an xxx symbol for the main function can be loaded. By default, the option is off and only UDFs that have at least one auxiliary symbol can be loaded; this prevents attempts at loading functions from shared object files other than those containing legitimate UDFs. See Section 28.4.2.6, "UDF Security Precautions".
--ansi

Command-Line Format

--ansi

Use standard (ANSI) SQL syntax instead of MySQL syntax. For more precise control over the server SQL mode, use the --sql-mode option instead. See Section 1.8, "MySQL Standards Compliance", and Section 5.1.8, "Server SQL Modes".
--basedir=dir_name, -b dir_name

Command-Line Format	--basedir=dir_name
System Variable	Name	basedir
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	directory name

The path to the MySQL installation directory. This option sets the basedir system variable.
--big-tables

Command-Line Format	--big-tables
System Variable	Name	big_tables
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values	Type	boolean
Permitted Values	Default	OFF

Enable large result sets by saving all temporary sets in files. This option prevents most "table full" errors, but also slows down queries for which in-memory tables would suffice. The server is able to handle large result sets automatically by using memory for small temporary tables and switching to disk tables where necessary.
--bind-address=addr

Command-Line Format	--bind-address=addr
System Variable	Name	bind_address
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	string
Permitted Values	Default	*

The MySQL server listens on a single network socket for TCP/IP connections. This socket is bound to a single address, but it is possible for an address to map onto multiple network interfaces. To specify an address, use the --bind-address=addr option at server startup, where addr is an IPv4 or IPv6 address or a host name. If addris a host name, the server resolves the name to an IP address and binds to that address.
The server treats different types of addresses as follows:
If you intend to bind the server to a specific address, be sure that the mysql.user grant table contains an account with administrative privileges that you can use to connect to that address. Otherwise, you will not be able to shut down the server. For example, if you bind the server to *, you can connect to it using all existing accounts. But if you bind the server to ::1, it accepts connections only on that address. In that case, first make sure that the‘root‘@‘::1‘ account is present in the mysql.user table so you can still connect to the server to shut it down.
--binlog-format={ROW|STATEMENT|MIXED}

Command-Line Format	--binlog-format=format
System Variable	Name	binlog_format
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values (<= 5.7.6)	Type	enumeration
	Default	STATEMENT
	Valid Values	ROW
		STATEMENT
		MIXED
Permitted Values (>= 5.7.7)	Type	enumeration
	Default	ROW
	Valid Values	ROW
		STATEMENT
		MIXED

Specify whether to use row-based, statement-based, or mixed replication. Statement-based is the default in MySQL 5.7. See Section 16.2.1, "Replication Formats".
Under some conditions, changing this variable at runtime is not possible, or causes replication to fail. SeeSection 5.4.4.2, "Setting The Binary Log Format", for more information.
Setting the binary logging format without enabling binary logging sets the binlog_format global system variable and logs a warning.
--bootstrap

Deprecated	5.7.6
Command-Line Format	--bootstrap

This option is used by the mysql_install_db program to create the MySQL privilege tables without having to start a full MySQL server.
- Note
- mysql_install_db is deprecated because its functionality has been integrated into mysqld, the MySQL server. Consequently, the --bootstrap server option that mysql_install_db passes to mysqld is also deprecated. To initialize a MySQL installation, invoke mysqld with the --initialize or --initialize-insecure option. For more information, see Section 2.10.1.1, "Initializing the Data Directory Manually Using mysqld". mysql_install_dband the --bootstrap server option will be removed in a future MySQL release.
--bootstrap is mutually exclusive with --daemonize, --initialize, and --initialize-insecure.
Global transaction identifiers (GTIDs) are not disabled when --bootstrap is used. --bootstrap was used (Bug #20980271). See Section 16.1.3, "Replication with Global Transaction Identifiers".
When the server operates in bootstap mode, some functionality is unavailable that limits the statements permitted in any file named by the --init-file option. For more information, see the description of that option. In addition, the disabled_storage_engines system variable has no effect.
--character-sets-dir=dir_name

Command-Line Format	--character-sets-dir=dir_name
System Variable	Name	character_sets_dir
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	directory name

The directory where character sets are installed. See Section 10.5, "Character Set Configuration".
--character-set-client-handshake

Command-Line Format	--character-set-client-handshake
Permitted Values	Type	boolean
Permitted Values	Default	TRUE

Do not ignore character set information sent by the client. To ignore client information and use the default server character set, use --skip-character-set-client-handshake; this makes MySQL behave like MySQL 4.0.
--character-set-filesystem=charset_name

Command-Line Format	--character-set-filesystem=name
System Variable	Name	character_set_filesystem
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values	Type	string
Permitted Values	Default	binary

The file system character set. This option sets the character_set_filesystem system variable.
--character-set-server=charset_name, -C charset_name

Command-Line Format	--character-set-server
System Variable	Name	character_set_server
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values	Type	string
Permitted Values	Default	latin1

Use charset_name as the default server character set. See Section 10.5, "Character Set Configuration". If you use this option to specify a nondefault character set, you should also use --collation-server to specify the collation.
--chroot=dir_name, -r dir_name

Command-Line Format	--chroot=dir_name
Permitted Values	Type	directory name

Put the mysqld server in a closed environment during startup by using the chroot() system call. This is a recommended security measure. Use of this option somewhat limits LOAD DATA INFILE and SELECT ... INTO OUTFILE.
--collation-server=collation_name

Command-Line Format	--collation-server
System Variable	Name	collation_server
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values	Type	string
Permitted Values	Default	latin1_swedish_ci

Use collation_name as the default server collation. See Section 10.5, "Character Set Configuration".
--console

Command-Line Format	--console
Platform Specific	Windows

(Windows only.) Write the error log to stderr and stdout (the console). mysqld does not close the console window if this option is used.
--console takes precedence over --log-error if both are given. (In MySQL 5.5 and 5.6, this is reversed: --log-error takes precedence over --console if both are given.)
--core-file

Command-Line Format	--core-file
Permitted Values	Type	boolean
Permitted Values	Default	OFF

Write a core file if mysqld dies. The name and location of the core file is system dependent. On Linux, a core file named core.pid is written to the current working directory of the process, which for mysqld is the data directory.pid represents the process ID of the server process. On OS X, a core file named core.pid is written to the/cores directory. On Solaris, use the coreadm command to specify where to write the core file and how to name it.
For some systems, to get a core file you must also specify the --core-file-size option to mysqld_safe. SeeSection 4.3.2, "mysqld_safe — MySQL Server Startup Script". On some systems, such as Solaris, you do not get a core file if you are also using the --user option. There might be additional restrictions or limitations. For example, it might be necessary to execute ulimit -c unlimited before starting the server. Consult your system documentation.
--daemonize

Introduced	5.7.6
Command-Line Format	--daemonize[={OFF\|ON}]
Permitted Values	Type	boolean
	Default	OFF

This option causes the server to run as a traditional, forking daemon, permitting it to work with operating systems that use systemd for process control. For more information, see Section 2.5.10, "Managing MySQL Server with systemd".
--daemonize is mutually exclusive with --bootstrap, --initialize, and --initialize-insecure.
--datadir=dir_name, -h dir_name

Command-Line Format	--datadir=dir_name
System Variable	Name	datadir
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	directory name

The path to the MySQL server data directory. This option sets the datadir system variable. See the description of that variable.
--debug[=debug_options], -# [debug_options]

Command-Line Format	--debug[=debug_options]
System Variable	Name	debug
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values (Unix)	Type	string
Permitted Values (Unix)	Default	d:t:i:o,/tmp/mysqld.trace
Permitted Values (Windows)	Type	string
Permitted Values (Windows)	Default	d:t:i:O,\mysqld.trace

If MySQL is configured with the -DWITH_DEBUG=1 CMake option, you can use this option to get a trace file of what mysqld is doing. A typical debug_options string is d:t:o,file_name. The default isd:t:i:o,/tmp/mysqld.trace on Unix and d:t:i:O,\mysqld.trace on Windows.
Using -DWITH_DEBUG=1 to configure MySQL with debugging support enables you to use the --debug="d,parser_debug" option when you start the server. This causes the Bison parser that is used to process SQL statements to dump a parser trace to the server‘s standard error output. Typically, this output is written to the error log.
This option may be given multiple times. Values that begin with + or - are added to or subtracted from the previous value. For example, --debug=T --debug=+P sets the value to P:T.
For more information, see Section 28.5.3, "The DBUG Package".
--debug-sync-timeout[=N]

Command-Line Format	--debug-sync-timeout[=#]
Permitted Values	Type	integer

Controls whether the Debug Sync facility for testing and debugging is enabled. Use of Debug Sync requires that MySQL be configured with the -DENABLE_DEBUG_SYNC=1 CMake option (see Section 2.9.4, "MySQL Source-Configuration Options"). If Debug Sync is not compiled in, this option is not available. The option value is a timeout in seconds. The default value is 0, which disables Debug Sync. To enable it, specify a value greater than 0; this value also becomes the default timeout for individual synchronization points. If the option is given without a value, the timeout is set to 300 seconds.
For a description of the Debug Sync facility and how to use synchronization points, see MySQL Internals: Test Synchronization.
--default-authentication-plugin=plugin_name

Removed	5.7.2
Command-Line Format	--default-authentication-plugin=plugin_name
Permitted Values	Type	enumeration
	Default	mysql_native_password
	Valid Values	mysql_native_password
		sha256_password

This option sets the default authentication plugin. It was removed in MySQL 5.7.2 and replaced by the default_authentication_plugin system variable. The variable is used the same way as the option at server startup, but also enables the default plugin value to be inspected as runtime. For usage details, see the description of default_authentication_plugin.
--default-storage-engine=type

Command-Line Format	--default-storage-engine=name
System Variable	Name	default_storage_engine
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values	Type	enumeration
Permitted Values	Default	InnoDB

Set the default storage engine for tables. See Chapter 15, Alternative Storage Engines. This option sets the storage engine for permanent tables only. To set the storage engine for TEMPORARY tables, set thedefault_tmp_storage_engine system variable.
If you disable the default storage engine at server startup, you must set the default engine for both permanent and TEMPORARY tables to a different engine or the server will not start.
--default-time-zone=timezone

Command-Line Format	--default-time-zone=name
Permitted Values	Type	string

Set the default server time zone. This option sets the global time_zone system variable. If this option is not given, the default time zone is the same as the system time zone (given by the value of the system_time_zone system variable.
--defaults-extra-file=file_name
Read this option file after the global option file but (on Unix) before the user option file. If the file does not exist or is otherwise inaccessible, an error occurs. file_name is interpreted relative to the current directory if given as a relative path name rather than a full path name. This must be the first option on the command line if it is used.
For additional information about this option, see Section 4.2.7, "Command-Line Options that Affect Option-File Handling".
--defaults-file=file_name
Read only the given option file. If the file does not exist or is otherwise inaccessible, an error occurs. file_nameis interpreted relative to the current directory if given as a relative path name rather than a full path name.
Note
This must be the first option on the command line if it is used, except that if the server is started with the --defaults-file and --install (or --install-manual) options, --install (or --install-manual) must be first.
For additional information about this option, see Section 4.2.7, "Command-Line Options that Affect Option-File Handling".
--defaults-group-suffix=str
Read not only the usual option groups, but also groups with the usual names and a suffix of str. For example,mysqld normally reads the [mysqld] group. If the --defaults-group-suffix=_other option is given, mysqldalso reads the [mysqld_other] group.
For additional information about this option, see Section 4.2.7, "Command-Line Options that Affect Option-File Handling".
--delay-key-write[={OFF|ON|ALL}]

Command-Line Format	--delay-key-write[=name]
System Variable	Name	delay_key_write
	Variable Scope	Global
	Dynamic Variable	Yes
Permitted Values	Type	enumeration
	Default	ON
	Valid Values	ON
		OFF
		ALL

Specify how to use delayed key writes. Delayed key writing causes key buffers not to be flushed between writes for MyISAM tables. OFF disables delayed key writes. ON enables delayed key writes for those tables that were created with the DELAY_KEY_WRITE option. ALL delays key writes for all MyISAM tables. See Section 5.1.1, "Configuring the Server", and Section 15.2.1, "MyISAM Startup Options".
- Note
- If you set this variable to ALL, you should not use MyISAM tables from within another program (such as another MySQL server or myisamchk) when the tables are in use. Doing so leads to index corruption.
--des-key-file=file_name

Deprecated	5.7.6
Command-Line Format	--des-key-file=file_name

Read the default DES keys from this file. These keys are used by the DES_ENCRYPT() and DES_DECRYPT()functions.
- Note
- The DES_ENCRYPT() and DES_DECRYPT() functions are deprecated as of MySQL 5.7.6, will be removed in a future MySQL release, and should no longer be used. Consequently, --des-key-file also is deprecated and will be removed.
--disable-partition-engine-check

Introduced	5.7.17
Deprecated	5.7.17
Command-Line Format	--disable-partition-engine-check

Whether to disable the startup check for tables with nonnative partitioning.
As of MySQL 5.7.17, the generic partitioning handler in the MySQL server is deprecated, and is removed in MySQL 8.0, when the storage engine used for a given table is expected to provide its own ("native") partitioning handler. Currently, only the InnoDB and NDB storage engines do.
Use of tables with nonnative partitioning results in an ER_WARN_DEPRECATED_SYNTAX warning. Also, the server performs a check at startup to identify tables that use nonnative partitioning; for any found, the server writes a message to its error log. To disable this check, use the --disable-partition-engine-check option.
To prepare for migration to MySQL 8.0, any table with nonnative partitioning should be changed to use an engine that provides native partitioning, or be made nonpartitioned. For example, to change a table to InnoDB, execute this statement:
ALTER TABLE table_name ENGINE = INNODB;
--early-plugin-load=plugin_list

Introduced	5.7.11
Command-Line Format	--early-plugin-load=plugin_list
Permitted Values (5.7.11)	Type	string
Permitted Values (5.7.11)	Default	keyring_file plugin library file name
Permitted Values (>= 5.7.12)	Type	string
Permitted Values (>= 5.7.12)	Default	empty string

This option tells the server which plugins to load before loading mandatory built-in plugins and before storage engine initialization. If multiple --early-plugin-load options are given, only the last one is used.
The option value is a semicolon-separated list of name=plugin_library and plugin_library values. Eachname is the name of a plugin to load, and plugin_library is the name of the library file that contains the plugin code. If a plugin library is named without any preceding plugin name, the server loads all plugins in the library. The server looks for plugin library files in the directory named by the plugin_dir system variable.
For example, if plugins named myplug1 and myplug2 have library files myplug1.so and myplug2.so, use this option to perform an early plugin load:
shell> mysqld --early-plugin-load="myplug1=myplug1.so;myplug2=myplug2.so"
Quotes are used around the argument value because otherwise a semicolon (;) is interpreted as a special character by some command interpreters. (Unix shells treat it as a command terminator, for example.)
Each named plugin is loaded early for a single invocation of mysqld only. After a restart, the plugin is not loaded early unless --early-plugin-load is used again.
If the server is started using --initialize or --initialize-insecure, plugins specified by --early-plugin-load are not loaded.
If the server is run with --help, plugins specified by --early-plugin-load are loaded but not initialized. This behavior ensures that plugin options are displayed in the help message.
As of MySQL 5.7.12, the default --early-plugin-load value is empty. To load your chosen keyring plugin, you must use an explicit --early-plugin-load option with a nonempty value.
- Important
- In MySQL 5.7.11, the default --early-plugin-load value was the name of the keyring_file plugin library file, so that plugin was loaded by default. InnoDB tablespace encryption requires the keyring_file plugin to be loaded prior to InnoDB initialization, so this change of default --early-plugin-load value introduces an incompatibility for upgrades from 5.7.11 to 5.7.12 or higher. Administrators who have encrypted InnoDBtablespaces must take explicit action to ensure continued loading of the keyring_file plugin: Start the server with an --early-plugin-load option that names the plugin library file. For additional information, see Section 6.5.4.1, "Keyring Plugin Installation".
The InnoDB tablespace encryption feature relies on the keyring_file plugin for encryption key management, and the keyring_file plugin must be loaded prior to storage engine initialization to facilitate InnoDB recovery for encrypted tables. In MySQL 5.7.11, if you do not want to load the keyring_file plugin at server startup, specify an empty string (--early-plugin-load="").
For information about InnoDB tablespace encryption, see Section 14.7.10, "InnoDB Tablespace Encryption". For general information about plugin loading, see Section 5.5.1, "Installing and Uninstalling Plugins".
--enable-named-pipe

Command-Line Format	--enable-named-pipe
Platform Specific	Windows

Enable support for named pipes. This option applies only on Windows.
--event-scheduler[=value]

Command-Line Format	--event-scheduler[=value]
System Variable	Name	event_scheduler
	Variable Scope	Global
	Dynamic Variable	Yes
Permitted Values	Type	enumeration
	Default	OFF
	Valid Values	ON
		OFF
		DISABLED

Enable or disable, and start or stop, the event scheduler.
For detailed information, see The --event-scheduler Option.
--exit-info[=flags], -T [flags]

Command-Line Format	--exit-info[=flags]
Permitted Values	Type	integer

This is a bitmask of different flags that you can use for debugging the mysqld server. Do not use this option unless you know exactly what it does!
--external-locking

Command-Line Format	--external-locking
Permitted Values	Type	boolean
Permitted Values	Default	FALSE

Enable external locking (system locking), which is disabled by default. If you use this option on a system on whichlockd does not fully work (such as Linux), it is easy for mysqld to deadlock.
To disable external locking explicitly, use --skip-external-locking.
External locking affects only MyISAM table access. For more information, including conditions under which it can and cannot be used, see Section 8.11.5, "External Locking".
--flush

Command-Line Format	--flush
System Variable	Name	flush
	Variable Scope	Global
	Dynamic Variable	Yes
Permitted Values	Type	boolean
Permitted Values	Default	OFF

Flush (synchronize) all changes to disk after each SQL statement. Normally, MySQL does a write of all changes to disk only after each SQL statement and lets the operating system handle the synchronizing to disk. See Section B.5.3.3, "What to Do If MySQL Keeps Crashing".
--gdb

Command-Line Format	--gdb
Permitted Values	Type	boolean
Permitted Values	Default	FALSE

Install an interrupt handler for SIGINT (needed to stop mysqld with ^C to set breakpoints) and disable stack tracing and core file handling. See Section 28.5, "Debugging and Porting MySQL".
--general-log[={0|1}]

Command-Line Format	--general-log
System Variable	Name	general_log
	Variable Scope	Global
	Dynamic Variable	Yes
Permitted Values	Type	boolean
Permitted Values	Default	OFF

Specify the initial general query log state. With no argument or an argument of 1, the --general-log option enables the log. If omitted or given with an argument of 0, the option disables the log.
--ignore-db-dir=dir_name

Deprecated	5.7.16
Command-Line Format	--ignore-db-dir
Permitted Values	Type	directory name

This option tells the server to ignore the given directory name for purposes of the SHOW DATABASES statement orINFORMATION_SCHEMA tables. For example, if a MySQL configuration locates the data directory at the root of a file system on Unix, the system might create a lost+found directory there that the server should ignore. Starting the server with --ignore-db-dir=lost+found causes that name not to be listed as a database.
To specify more than one name, use this option multiple times, once for each name. Specifying the option with an empty value (that is, as --ignore-db-dir=) resets the directory list to the empty list.
Instances of this option given at server startup are used to set the ignore_db_dirs system variable.
This option is deprecated in MySQL 5.7. With the introduction of the data dictionary in MySQL 8.0, it became superfluous and was removed in that version.
--initialize

Introduced	5.7.6
Command-Line Format	--initialize
Permitted Values	Type	boolean
	Default	OFF

This option is used to initialize a MySQL installation by creating the data directory and populating the tables in themysql system database. For more information, see Section 2.10.1.1, "Initializing the Data Directory Manually Using mysqld".
When the server is started with --initialize, some functionality is unavailable that limits the statements permitted in any file named by the --init-file option. For more information, see the description of that option. In addition, the disabled_storage_engines system variable has no effect.
In MySQL NDB Cluster 7.5.4 and later, the --ndbcluster option is ignored when used together with --initialize. (Bug #81689, Bug #23518923)
In MySQL 5.7.7 and earlier, global transaction identifiers (GTIDs) were automatically disabled whenever --initialize was enabled. In MySQL 5.7.8 and later GTIDs are not disabled when --initialize is enabled.
--initialize is mutually exclusive with --bootstrap and --daemonize.
--initialize-insecure

Introduced	5.7.6
Command-Line Format	--initialize-insecure
Permitted Values	Type	boolean
	Default	OFF

This option is used to initialize a MySQL installation by creating the data directory and populating the tables in themysql system database. This option implies --initialize. For more information, see the description of that option, and Section 2.10.1.1, "Initializing the Data Directory Manually Using mysqld".
--initialize-insecure is mutually exclusive with --bootstrap and --daemonize.
--init-file=file_name

Command-Line Format	--init-file=file_name
System Variable	Name	init_file
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	file name

Read SQL statements from this file at startup. Each statement must be on a single line and should not include comments.
If the server is started with any of the --bootstrap, --initialize, or --initialize-insecure options, it operates in bootstap mode and some functionality is unavailable that limits the statements permitted in the file. These include statements that relate to account management (such as CREATE USER or GRANT), replication, and global transaction identifiers. See Section 16.1.3, "Replication with Global Transaction Identifiers".
--innodb-xxx
Set an option for the InnoDB storage engine. The InnoDB options are listed in Section 14.14, "InnoDB Startup Options and System Variables".
--install [service_name]

Command-Line Format	--install [service_name]
Platform Specific	Windows

(Windows only) Install the server as a Windows service that starts automatically during Windows startup. The default service name is MySQL if no service_name value is given. For more information, see Section 2.3.5.8, "Starting MySQL as a Windows Service".
- Note
- If the server is started with the --defaults-file and --install options, --install must be first.
--install-manual [service_name]

Command-Line Format	--install-manual [service_name]
Platform Specific	Windows

(Windows only) Install the server as a Windows service that must be started manually. It does not start automatically during Windows startup. The default service name is MySQL if no service_name value is given. For more information, see Section 2.3.5.8, "Starting MySQL as a Windows Service".
- Note
- If the server is started with the --defaults-file and --install-manual options, --install-manual must be first.
--language=lang_name, -L lang_name

Deprecated	5.6.1, by lc-messages-dir
Command-Line Format	--language=name
System Variable	Name	language
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	directory name
Permitted Values	Default	/usr/local/mysql/share/mysql/english/

The language to use for error messages. lang_name can be given as the language name or as the full path name to the directory where the language files are installed. See Section 10.2, "Setting the Error Message Language".
--lc-messages-dir and --lc-messages should be used rather than --language, which is deprecated (and handled as an alias for --lc-messages-dir). The --language option will be removed in a future MySQL release.
--large-pages

Command-Line Format	--large-pages
System Variable	Name	large_pages
	Variable Scope	Global
	Dynamic Variable	No
Platform Specific	Linux
Permitted Values (Linux)	Type	boolean
Permitted Values (Linux)	Default	FALSE

Some hardware/operating system architectures support memory pages greater than the default (usually 4KB). The actual implementation of this support depends on the underlying hardware and operating system. Applications that perform a lot of memory accesses may obtain performance improvements by using large pages due to reduced Translation Lookaside Buffer (TLB) misses.
MySQL supports the Linux implementation of large page support (which is called HugeTLB in Linux). See Section 8.12.4.2, "Enabling Large Page Support". For Solaris support of large pages, see the description of the --super-large-pages option.
--large-pages is disabled by default.
--lc-messages=locale_name

Command-Line Format	--lc-messages=name
System Variable	Name	lc_messages
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values	Type	string
Permitted Values	Default	en_US

The locale to use for error messages. The default is en_US. The server converts the argument to a language name and combines it with the value of --lc-messages-dir to produce the location for the error message file. See Section 10.2, "Setting the Error Message Language".
--lc-messages-dir=dir_name

Command-Line Format	--lc-messages-dir=dir_name
System Variable	Name	lc_messages_dir
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	directory name

The directory where error messages are located. The server uses the value together with the value of --lc-messages to produce the location for the error message file. See Section 10.2, "Setting the Error Message Language".
--local-service

Command-Line Format

--local-service

(Windows only) A --local-service option following the service name causes the server to run using theLocalService Windows account that has limited system privileges. If both --defaults-file and --local-service are given following the service name, they can be in any order. See Section 2.3.5.8, "Starting MySQL as a Windows Service".
--log-error[=file_name]

Command-Line Format	--log-error[=file_name]
System Variable	Name	log_error
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	file name

Write the error log and startup messages to this file. See Section 5.4.2, "The Error Log".
If the option names no file, the error log file name on Unix and Unix-like systems is host_name.err in the data directory. The file name on Windows is the same, unless the --pid-file option is specified. In that case, the file name is the PID file base name with a suffix of .err in the data directory.
If the option names a file, the error log file has that name (with an .err suffix added if the name has no suffix), located under the data directory unless an absolute path name is given to specify a different location.
On Windows, --console takes precedence over --log-error if both are given. In this case, the server writes the error log to the console rather than to a file. (In MySQL 5.5 and 5.6, this is reversed: --log-error takes precedence over --console if both are given.)
--log-isam[=file_name]

Command-Line Format	--log-isam[=file_name]
Permitted Values	Type	file name

Log all MyISAM changes to this file (used only when debugging MyISAM).
--log-output=value,...

Command-Line Format	--log-output=name
System Variable	Name	log_output
	Variable Scope	Global
	Dynamic Variable	Yes
Permitted Values	Type	set
	Default	FILE
	Valid Values	TABLE
		FILE
		NONE

This option determines the destination for general query log and slow query log output. The option value can be given as one or more of the words TABLE, FILE, or NONE. TABLE select logging to the general_log andslow_log tables in the mysql database as a destination. FILE selects logging to log files as a destination. NONEdisables logging. If NONE is present in the option value, it takes precedence over any other words that are present.TABLE and FILE can both be given to select to both log output destinations.
This option selects log output destinations, but does not enable log output. To do that, use the --general_logand --slow_query_log options. For FILE logging, the --general_log_file and -slow_query_log_fileoptions determine the log file location. For more information, see Section 5.4.1, "Selecting General Query and Slow Query Log Output Destinations".
--log-queries-not-using-indexes

Command-Line Format	--log-queries-not-using-indexes
System Variable	Name	log_queries_not_using_indexes
	Variable Scope	Global
	Dynamic Variable	Yes
Permitted Values	Type	boolean
Permitted Values	Default	OFF

If you are using this option with the slow query log enabled, queries that are expected to retrieve all rows are logged. See Section 5.4.5, "The Slow Query Log". This option does not necessarily mean that no index is used. For example, a query that uses a full index scan uses an index but would be logged because the index would not limit the number of rows.
--log-raw

Command-Line Format	--log-raw[=value]
Permitted Values	Type	boolean
Permitted Values	Default	OFF

Passwords in certain statements written to the general query log, slow query log, and binary log are rewritten by the server not to occur literally in plain text. Password rewriting can be suppressed for the general query log by starting the server with the --log-raw option. This option may be useful for diagnostic purposes, to see the exact text of statements as received by the server, but for security reasons is not recommended for production use.
If a query rewrite plugin is installed, the --log-raw option affects statement logging as follows:
- Without --log-raw, the server logs the statement returned by the query rewrite plugin. This may differ from the statement as received.
- With --log-raw, the server logs the original statement as received.
For more information, see Section 6.1.2.3, "Passwords and Logging".
--log-short-format

Command-Line Format	--log-short-format
Permitted Values	Type	boolean
Permitted Values	Default	FALSE

Log less information to the slow query log, if it has been activated.
--log-slow-admin-statements

Removed	5.7.1
Command-Line Format	--log-slow-admin-statements (5.7.0)
Permitted Values	Type	boolean
	Default	OFF

Include slow administrative statements in the statements written to the slow query log. Administrative statements include ALTER TABLE, ANALYZE TABLE, CHECK TABLE, CREATE INDEX, DROP INDEX, OPTIMIZE TABLE, and REPAIR TABLE.
This command-line option was removed in MySQL 5.7.1 and replaced by the log_slow_admin_statementssystem variable. The system variable can be set on the command line or in option files the same way as the option, so there is no need for any changes at server startup, but the system variable also makes it possible to examine or set the value at runtime.
--log-tc=file_name

Command-Line Format	--log-tc=file_name
Permitted Values	Type	file name
Permitted Values	Default	tc.log

The name of the memory-mapped transaction coordinator log file (for XA transactions that affect multiple storage engines when the binary log is disabled). The default name is tc.log. The file is created under the data directory if not given as a full path name. This option is unused.
--log-tc-size=size

Command-Line Format	--log-tc-size=#
Permitted Values (32-bit platforms)	Type	integer
	Default	24576
	Max Value	4294967295
Permitted Values (64-bit platforms)	Type	integer
	Default	24576
	Max Value	18446744073709551615

The size in bytes of the memory-mapped transaction coordinator log. The default size is 24KB.
--log-warnings[=level], -W [level]

Deprecated	5.7.2
Command-Line Format	--log-warnings[=#]
System Variable	Name	log_warnings
	Variable Scope	Global
	Dynamic Variable	Yes
Permitted Values (32-bit platforms, <= 5.7.1)	Type	integer
	Default	1
	Min Value	0
	Max Value	4294967295
Permitted Values (32-bit platforms, >= 5.7.2)	Type	integer
	Default	2
	Min Value	0
	Max Value	4294967295
Permitted Values (64-bit platforms, <= 5.7.1)	Type	integer
	Default	1
	Min Value	0
	Max Value	18446744073709551615
Permitted Values (64-bit platforms, >= 5.7.2)	Type	integer
	Default	2
	Min Value	0
	Max Value	18446744073709551615

Note
As of MySQL 5.7.2, the log_error_verbosity system variable is preferred over, and should be used instead of, the --log-warnings option or log_warnings system variable. For more information, see the descriptions of log_error_verbosity and log_warnings. The --log-warnings command-line option and log_warningssystem variable are deprecated and will be removed in a future MySQL release.

Whether to produce additional warning messages to the error log. This option is enabled by default (the default is 1 before MySQL 5.7.2, 2 as of 5.7.2). To disable it, use --log-warnings=0. Specifying the option without alevel value increments the current value by 1. The server logs messages about statements that are unsafe for statement-based logging if the value is greater than 0. Aborted connections and access-denied errors for new connection attempts are logged if the value is greater than 1. See Section B.5.2.10, "Communication Errors and Aborted Connections".
--low-priority-updates

Command-Line Format	--low-priority-updates
System Variable	Name	low_priority_updates
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values	Type	boolean
Permitted Values	Default	FALSE

Give table-modifying operations (INSERT, REPLACE, DELETE, UPDATE) lower priority than selects. This can also be done using {INSERT | REPLACE | DELETE | UPDATE} LOW_PRIORITY ... to lower the priority of only one query, or by SET LOW_PRIORITY_UPDATES=1 to change the priority in one thread. This affects only storage engines that use only table-level locking (MyISAM, MEMORY, MERGE). See Section 8.11.2, "Table Locking Issues".
--min-examined-row-limit=number

Command-Line Format	--min-examined-row-limit=#
System Variable	Name	min_examined_row_limit
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values (32-bit platforms)	Type	integer
	Default	0
	Min Value	0
	Max Value	4294967295
Permitted Values (64-bit platforms)	Type	integer
	Default	0
	Min Value	0
	Max Value	18446744073709551615

When this option is set, queries which examine fewer than number rows are not written to the slow query log. The default is 0.
--memlock

Command-Line Format	--memlock
Permitted Values	Type	boolean
Permitted Values	Default	FALSE

Lock the mysqld process in memory. This option might help if you have a problem where the operating system is causing mysqld to swap to disk.
--memlock works on systems that support the mlockall() system call; this includes Solaris, most Linux distributions that use a 2.4 or higher kernel, and perhaps other Unix systems. On Linux systems, you can tell whether or not mlockall() (and thus this option) is supported by checking to see whether or not it is defined in the system mman.h file, like this:
shell> grep mlockall /usr/include/sys/mman.h
If mlockall() is supported, you should see in the output of the previous command something like the following:
extern int mlockall (int __flags) __THROW;
- Important
- Use of this option may require you to run the server as root, which, for reasons of security, is normally not a good idea. See Section 6.1.5, "How to Run MySQL as a Normal User".
- On Linux and perhaps other systems, you can avoid the need to run the server as root by changing thelimits.conf file. See the notes regarding the memlock limit in Section 8.12.4.2, "Enabling Large Page Support".
- You must not try to use this option on a system that does not support the mlockall() system call; if you do so,mysqld will very likely crash as soon as you try to start it.
--myisam-block-size=N

Command-Line Format	--myisam-block-size=#
Permitted Values	Type	integer
	Default	1024
	Min Value	1024
	Max Value	16384

The block size to be used for MyISAM index pages.
--myisam-recover-options[=option[,option]...]]

Command-Line Format	--myisam-recover-options[=name]
Permitted Values	Type	enumeration
	Default	OFF
	Valid Values	OFF
		DEFAULT
		BACKUP
		FORCE
		QUICK

Set the MyISAM storage engine recovery mode. The option value is any combination of the values of OFF,DEFAULT, BACKUP, FORCE, or QUICK. If you specify multiple values, separate them by commas. Specifying the option with no argument is the same as specifying DEFAULT, and specifying with an explicit value of "" disables recovery (same as a value of OFF). If recovery is enabled, each time mysqld opens a MyISAM table, it checks whether the table is marked as crashed or was not closed properly. (The last option works only if you are running with external locking disabled.) If this is the case, mysqld runs a check on the table. If the table was corrupted,mysqld attempts to repair it.
The following options affect how the repair works.

Option	Description
OFF	No recovery.
DEFAULT	Recovery without backup, forcing, or quick checking.
BACKUP	If the data file was changed during recovery, save a backup of the *tbl_name*.MYD file astbl_name-datetime.BAK.
FORCE	Run recovery even if we would lose more than one row from the .MYD file.
QUICK	Do not check the rows in the table if there are not any delete blocks.

Before the server automatically repairs a table, it writes a note about the repair to the error log. If you want to be able to recover from most problems without user intervention, you should use the options BACKUP,FORCE. This forces a repair of a table even if some rows would be deleted, but it keeps the old data file as a backup so that you can later examine what happened.
See Section 15.2.1, "MyISAM Startup Options".
--no-defaults
Do not read any option files. If program startup fails due to reading unknown options from an option file, --no-defaults can be used to prevent them from being read. This must be the first option on the command line if it is used.
For additional information about this option, see Section 4.2.7, "Command-Line Options that Affect Option-File Handling".
--old-alter-table

Command-Line Format	--old-alter-table
System Variable	Name	old_alter_table
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values	Type	boolean
Permitted Values	Default	OFF

When this option is given, the server does not use the optimized method of processing an ALTER TABLEoperation. It reverts to using a temporary table, copying over the data, and then renaming the temporary table to the original, as used by MySQL 5.0 and earlier. For more information on the operation of ALTER TABLE, see Section 13.1.8, "ALTER TABLE Syntax".
--old-style-user-limits

Command-Line Format	--old-style-user-limits
Permitted Values	Type	boolean
Permitted Values	Default	FALSE

Enable old-style user limits. (Before MySQL 5.0.3, account resource limits were counted separately for each host from which a user connected rather than per account row in the user table.) See Section 6.3.5, "Setting Account Resource Limits".
--open-files-limit=count

Command-Line Format	--open-files-limit=#
System Variable	Name	open_files_limit
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	integer
	Default	5000, with possible adjustment
	Min Value	0
	Max Value	platform dependent

Changes the number of file descriptors available to mysqld. You should try increasing the value of this option ifmysqld gives you the error Too many open files. mysqld uses the option value to reserve descriptors withsetrlimit(). Internally, the maximum value for this option is the maximum unsigned integer value, but the actual maximum is platform dependent. If the requested number of file descriptors cannot be allocated, mysqldwrites a warning to the error log.
mysqld may attempt to allocate more than the requested number of descriptors (if they are available), using the values of max_connections and table_open_cache to estimate whether more descriptors will be needed.
On Unix, the value cannot be set greater than ulimit -n.
--partition[=value]

Deprecated	5.7.16
Command-Line Format	--partition
Disabled by	skip-partition
Permitted Values	Type	boolean
	Default	ON

Enables or disables user-defined partitioning support in the MySQL Server.
This option is deprecated in MySQL 5.7.16, and is removed from MySQL 8.0 because in MySQL 8.0, the partitioning engine is replaced by native partitioning, which cannot be disabled.
--performance-schema-xxx
Configure a Performance Schema option. For details, see Section 25.13, "Performance Schema Command Options".
--pid-file=file_name

Command-Line Format	--pid-file=file_name
System Variable	Name	pid_file
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	file name

The path name of the process ID file. The server creates the file in the data directory unless an absolute path name is given to specify a different directory. This file is used by other programs such as mysqld_safe to determine the server‘s process ID. On Windows, this variable also affects the default error log file name. SeeSection 5.4.2, "The Error Log"
--plugin-xxx
Specifies an option that pertains to a server plugin. For example, many storage engines can be built as plugins, and for such engines, options for them can be specified with a --plugin prefix. Thus, the --innodb_file_per_table option for InnoDB can be specified as --plugin-innodb_file_per_table.
For boolean options that can be enabled or disabled, the --skip prefix and other alternative formats are supported as well (see Section 4.2.5, "Program Option Modifiers"). For example, --skip-plugin-innodb_file_per_table disables innodb_file_per_table.
The rationale for the --plugin prefix is that it enables plugin options to be specified unambiguously if there is a name conflict with a built-in server option. For example, were a plugin writer to name a plugin "sql" and implement a "mode" option, the option name might be --sql-mode, which would conflict with the built-in option of the same name. In such cases, references to the conflicting name are resolved in favor of the built-in option. To avoid the ambiguity, users can specify the plugin option as --plugin-sql-mode. Use of the --plugin prefix for plugin options is recommended to avoid any question of ambiguity.
--plugin-load=plugin_list

Command-Line Format	--plugin-load=plugin_list
Permitted Values	Type	string

This option tells the server to load the named plugins at startup. If multiple --plugin-load options are given, only the last one is used. Additional plugins to load may be specified using --plugin-load-add options.
The option value is a semicolon-separated list of name=plugin_library and plugin_library values. Eachname is the name of a plugin to load, and plugin_library is the name of the library file that contains the plugin code. If a plugin library is named without any preceding plugin name, the server loads all plugins in the library. The server looks for plugin library files in the directory named by the plugin_dir system variable.
For example, if plugins named myplug1 and myplug2 have library files myplug1.so and myplug2.so, use this option to perform an early plugin load:
shell> mysqld --plugin-load="myplug1=myplug1.so;myplug2=myplug2.so"
Quotes are used around the argument value here because otherwise semicolon (;) is interpreted as a special character by some command interpreters. (Unix shells treat it as a command terminator, for example.)
Each named plugin is loaded for a single invocation of mysqld only. After a restart, the plugin is not loaded unless--plugin-load is used again. This is in contrast to INSTALL PLUGIN, which adds an entry to themysql.plugins table to cause the plugin to be loaded for every normal server startup.
Under normal startup, the server determines which plugins to load by reading the mysql.plugins system table. If the server is started with the --skip-grant-tables option, it does not consult the mysql.plugins table and does not load plugins listed there. --plugin-load enables plugins to be loaded even when --skip-grant-tables is given. --plugin-load also enables plugins to be loaded at startup that cannot be loaded at runtime.
For additional information about plugin loading, see Section 5.5.1, "Installing and Uninstalling Plugins".
--plugin-load-add=plugin_list

Command-Line Format	--plugin-load-add=plugin_list
Permitted Values	Type	string

This option complements the --plugin-load option. --plugin-load-add adds a plugin or plugins to the set of plugins to be loaded at startup. The argument format is the same as for --plugin-load. --plugin-load-addcan be used to avoid specifying a large set of plugins as a single long unwieldy --plugin-load argument.
--plugin-load-add can be given in the absence of --plugin-load, but any instance of --plugin-load-addthat appears before --plugin-load. has no effect because --plugin-load resets the set of plugins to load. In other words, these options:
--plugin-load=x --plugin-load-add=y
are equivalent to this option:
--plugin-load="x;y"
But these options:
--plugin-load-add=y --plugin-load=x
are equivalent to this option:
--plugin-load=x
For additional information about plugin loading, see Section 5.5.1, "Installing and Uninstalling Plugins".
--port=port_num, -P port_num

Command-Line Format	--port=#
System Variable	Name	port
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	integer
	Default	3306
	Min Value	0
	Max Value	65535

The port number to use when listening for TCP/IP connections. On Unix and Unix-like systems, the port number must be 1024 or higher unless the server is started by the root system user.
--port-open-timeout=num

Command-Line Format	--port-open-timeout=#
Permitted Values	Type	integer
Permitted Values	Default	0

On some systems, when the server is stopped, the TCP/IP port might not become available immediately. If the server is restarted quickly afterward, its attempt to reopen the port can fail. This option indicates how many seconds the server should wait for the TCP/IP port to become free if it cannot be opened. The default is not to wait.
--print-defaults
Print the program name and all options that it gets from option files. Password values are masked. This must be the first option on the command line if it is used, except that it may be used immediately after --defaults-fileor --defaults-extra-file.
For additional information about this option, see Section 4.2.7, "Command-Line Options that Affect Option-File Handling".
--remove [service_name]

Command-Line Format	--remove [service_name]
Platform Specific	Windows

(Windows only) Remove a MySQL Windows service. The default service name is MySQL if no service_namevalue is given. For more information, see Section 2.3.5.8, "Starting MySQL as a Windows Service".
--safe-user-create

Command-Line Format	--safe-user-create
Permitted Values	Type	boolean
Permitted Values	Default	FALSE

If this option is enabled, a user cannot create new MySQL users by using the GRANT statement unless the user has the INSERT privilege for the mysql.user table or any column in the table. If you want a user to have the ability to create new users that have those privileges that the user has the right to grant, you should grant the user the following privilege:
GRANT INSERT(user) ON mysql.user TO ‘user_name‘@‘host_name‘;
This ensures that the user cannot change any privilege columns directly, but has to use the GRANT statement to give privileges to other users.
--secure-auth

Deprecated	5.7.5
Command-Line Format	--secure-auth
System Variable	Name	secure_auth
	Variable Scope	Global
	Dynamic Variable	Yes
Permitted Values (<= 5.7.4)	Type	boolean
	Default	ON
	Valid Values	OFF
	Valid Values	ON
Permitted Values (>= 5.7.5)	Type	boolean
	Default	ON
	Valid Values	ON

This option causes the server to block connections by clients that attempt to use accounts that have passwords stored in the old (pre-4.1) format. Use it to prevent all use of passwords employing the old format (and hence insecure communication over the network).
As of MySQL 5.7.5, this option is deprecated and will be removed in a future MySQL release. It is always enabled and attempting to disable it (--skip-secure-auth, --secure-auth=0) produces an error. Before MySQL 5.7.5, this option is enabled by default but can be disabled.
Server startup fails with an error if this option is enabled and the privilege tables are in pre-4.1 format. See Section 6.5.1.3, "Migrating Away from Pre-4.1 Password Hashing and the mysql_old_password Plugin".
The mysql client also has a --secure-auth option, which prevents connections to a server if the server requires a password in old format for the client account.
- Note
- Passwords that use the pre-4.1 hashing method are less secure than passwords that use the native password hashing method and should be avoided. Pre-4.1 passwords are deprecated and support for them is removed in MySQL 5.7.5. For account upgrade instructions, see Section 6.5.1.3, "Migrating Away from Pre-4.1 Password Hashing and the mysql_old_password Plugin".
--secure-file-priv=dir_name

Command-Line Format	--secure-file-priv=dir_name
System Variable	Name	secure_file_priv
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values (<= 5.7.5)	Type	string
	Default	empty
	Valid Values	empty
	Valid Values	dirname
Permitted Values (>= 5.7.6)	Type	string
	Default	platform specific
	Valid Values	empty
		dirname
		NULL

This option sets the secure_file_priv system variable, which is used to limit the effect of data import and export operations, such as those performed by the LOAD DATA and SELECT ... INTO OUTFILE statements and the LOAD_FILE() function. For more information, see the description of secure_file_priv.
--shared-memory

Command-Line Format	--shared-memory[={0,1}]
System Variable	Name	shared_memory
	Variable Scope	Global
	Dynamic Variable	No
Platform Specific	Windows
Permitted Values	Type	boolean
Permitted Values	Default	FALSE

Enable shared-memory connections by local clients. This option is available only on Windows.
--shared-memory-base-name=name

Command-Line Format	--shared-memory-base-name=name
System Variable	Name	shared_memory_base_name
	Variable Scope	Global
	Dynamic Variable	No
Platform Specific	Windows
Permitted Values	Type	string
Permitted Values	Default	MYSQL

The name of shared memory to use for shared-memory connections. This option is available only on Windows. The default name is MYSQL. The name is case sensitive.
--skip-concurrent-insert
Turn off the ability to select and insert at the same time on MyISAM tables. (This is to be used only if you think you have found a bug in this feature.) See Section 8.11.3, "Concurrent Inserts".
--skip-event-scheduler

Command-Line Format	--skip-event-scheduler
	--disable-event-scheduler

Turns the Event Scheduler OFF. This is not the same as disabling the Event Scheduler, which requires setting --event-scheduler=DISABLED; see The --event-scheduler Option, for more information.
--skip-grant-tables
This option causes the server to start without using the privilege system at all, which gives anyone with access to the server unrestricted access to all databases. You can cause a running server to start using the grant tables again by executing mysqladmin flush-privileges or mysqladmin reload command from a system shell, or by issuing a MySQL FLUSH PRIVILEGES statement after connecting to the server.
This option also causes the server to suppress during its startup sequence the loading of user-defined functions (UDFs), scheduled events, and plugins that were installed with the INSTALL PLUGIN statement. To cause plugins to be loaded anyway, use the --plugin-load option. --skip-grant-tables also causes the disabled_storage_engines system variable to have no effect.
FLUSH PRIVILEGES might be executed implicitly by other actions performed after startup. For example,mysql_upgrade flushes the privileges during the upgrade procedure.
--skip-host-cache
Disable use of the internal host cache for faster name-to-IP resolution. In this case, the server performs a DNS lookup every time a client connects. See Section 8.12.5.2, "DNS Lookup Optimization and the Host Cache".
Use of --skip-host-cache is similar to setting the host_cache_size system variable to 0, but host_cache_size is more flexible because it can also be used to resize, enable, or disable the host cache at runtime, not just at server startup.
If you start the server with --skip-host-cache, that does not prevent changes to the value of host_cache_size, but such changes have no effect and the cache is not re-enabled even if host_cache_sizeis set larger than 0.
--skip-innodb
Disable the InnoDB storage engine. In this case, because the default storage engine is InnoDB, the server will not start unless you also use --default-storage-engine and --default-tmp-storage-engine to set the default to some other engine for both permanent and TEMPORARY tables.
As of MySQL 5.7.5, the InnoDB storage engine can no longer be disabled, and the --skip-innodb option is deprecated and has no effect. Its use results in a warning. This option will be removed in a future MySQL release.
--skip-name-resolve
Do not resolve host names when checking client connections. Use only IP addresses. If you use this option, allHost column values in the grant tables must be IP addresses. See Section 8.12.5.2, "DNS Lookup Optimization and the Host Cache".
Depending on the network configuration of your system and the Host values for your accounts, clients may need to connect using an explicit --host option, such as --host=127.0.0.1 or --host=::1.
An attempt to connect to the host 127.0.0.1 normally resolves to the localhost account. However, this fails if the server is run with the --skip-name-resolve option, so make sure that an account exists that can accept a connection. For example, to be able to connect as root using --host=127.0.0.1 or --host=::1, create these accounts:
CREATE USER ‘root‘@‘127.0.0.1‘ IDENTIFIED BY ‘root-password‘;
CREATE USER ‘root‘@‘::1‘ IDENTIFIED BY ‘root-password‘;
--skip-networking
Do not listen for TCP/IP connections at all. All interaction with mysqld must be made using named pipes or shared memory (on Windows) or Unix socket files (on Unix). This option is highly recommended for systems where only local clients are permitted. See Section 8.12.5.2, "DNS Lookup Optimization and the Host Cache".
--skip-partition

Deprecated	5.7.16
Command-Line Format	--skip-partition
	--disable-partition

Disables user-defined partitioning. Partitioned tables can be seen using SHOW TABLES or by querying the INFORMATION_SCHEMA.TABLES table, but cannot be created or modified, nor can data in such tables be accessed. All partition-specific columns in the INFORMATION_SCHEMA.PARTITIONS table display NULL.
Since DROP TABLE removes table definition (.frm) files, this statement works on partitioned tables even when partitioning is disabled using the option. The statement, however, does not remove partition definitions associated with partitioned tables in such cases. For this reason, you should avoid dropping partitioned tables with partitioning disabled, or take action to remove orphaned .par files manually (if present).
- Note
- As of MySQL 5.7.6, partition definition (.par) files are no longer created for partitioned InnoDB tables. Instead, partition definitions are stored in the InnoDB internal data dictionary. Partition definition (.par) files continue to be used for partitioned MyISAM tables.
This option is deprecated in MySQL 5.7.16, and is removed from MySQL 8.0 because in MySQL 8.0, the partitioning engine is replaced by native partitioning, which cannot be disabled.
--ssl*
Options that begin with --ssl specify whether to permit clients to connect using SSL and indicate where to find SSL keys and certificates. See Section 6.4.2, "Command Options for Encrypted Connections".
--standalone

Command-Line Format	--standalone
Platform Specific	Windows

Available on Windows only; instructs the MySQL server not to run as a service.
--super-large-pages

Command-Line Format	--super-large-pages
Platform Specific	Solaris
Permitted Values (Solaris)	Type	boolean
	Default	FALSE

Standard use of large pages in MySQL attempts to use the largest size supported, up to 4MB. Under Solaris, a"super large pages" feature enables uses of pages up to 256MB. This feature is available for recent SPARC platforms. It can be enabled or disabled by using the --super-large-pages or --skip-super-large-pagesoption.
--symbolic-links, --skip-symbolic-links

Command-Line Format	--symbolic-links
Permitted Values	Type	boolean
Permitted Values	Default	ON

Enable or disable symbolic link support. On Unix, enabling symbolic links means that you can link a MyISAM index file or data file to another directory with the INDEX DIRECTORY or DATA DIRECTORY options of the CREATE TABLEstatement. If you delete or rename the table, the files that its symbolic links point to also are deleted or renamed. See Section 8.12.3.2, "Using Symbolic Links for MyISAM Tables on Unix".
This option has no meaning on Windows.
--skip-show-database

Command-Line Format	--skip-show-database
System Variable	Name	skip_show_database
	Variable Scope	Global
	Dynamic Variable	No

This option sets the skip_show_database system variable that controls who is permitted to use the SHOW DATABASES statement. See Section 5.1.5, "Server System Variables".
--skip-stack-trace

Command-Line Format

--skip-stack-trace

Do not write stack traces. This option is useful when you are running mysqld under a debugger. On some systems, you also must use this option to get a core file. See Section 28.5, "Debugging and Porting MySQL".
--slow-query-log[={0|1}]

Command-Line Format	--slow-query-log
System Variable	Name	slow_query_log
	Variable Scope	Global
	Dynamic Variable	Yes
Permitted Values	Type	boolean
Permitted Values	Default	OFF

Specify the initial slow query log state. With no argument or an argument of 1, the --slow-query-log option enables the log. If omitted or given with an argument of 0, the option disables the log.
--slow-start-timeout=timeout

Command-Line Format	--slow-start-timeout=#
Permitted Values (Windows)	Type	integer
Permitted Values (Windows)	Default	15000

This option controls the Windows service control manager‘s service start timeout. The value is the maximum number of milliseconds that the service control manager waits before trying to kill the windows service during startup. The default value is 15000 (15 seconds). If the MySQL service takes too long to start, you may need to increase this value. A value of 0 means there is no timeout.
--socket=path

Command-Line Format	--socket={file_name\|pipe_name}
System Variable	Name	socket
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values (Windows)	Type	string
Permitted Values (Windows)	Default	MySQL
Permitted Values (Other)	Type	string
Permitted Values (Other)	Default	/tmp/mysql.sock

On Unix, this option specifies the Unix socket file to use when listening for local connections. The default value is/tmp/mysql.sock. If this option is given, the server creates the file in the data directory unless an absolute path name is given to specify a different directory. On Windows, the option specifies the pipe name to use when listening for local connections that use a named pipe. The default value is MySQL (not case sensitive).
--sql-mode=value[,value[,value...]]

Command-Line Format	--sql-mode=name
System Variable	Name	sql_mode
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values (<= 5.7.4)	Type	set
	Default	NO_ENGINE_SUBSTITUTION
	Valid Values	ALLOW_INVALID_DATES
		ANSI_QUOTES
		ERROR_FOR_DIVISION_BY_ZERO
		HIGH_NOT_PRECEDENCE
		IGNORE_SPACE
		NO_AUTO_CREATE_USER
		NO_AUTO_VALUE_ON_ZERO
		NO_BACKSLASH_ESCAPES
		NO_DIR_IN_CREATE
		NO_ENGINE_SUBSTITUTION
		NO_FIELD_OPTIONS
		NO_KEY_OPTIONS
		NO_TABLE_OPTIONS
		NO_UNSIGNED_SUBTRACTION
		NO_ZERO_DATE
		NO_ZERO_IN_DATE
		ONLY_FULL_GROUP_BY
		PAD_CHAR_TO_FULL_LENGTH
		PIPES_AS_CONCAT
		REAL_AS_FLOAT
		STRICT_ALL_TABLES
		STRICT_TRANS_TABLES
Permitted Values (>= 5.7.5, <= 5.7.6)	Type	set
	Default	ONLY_FULL_GROUP_BY STRICT_TRANS_TABLES NO_ENGINE_SUBSTITUTION
	Valid Values	ALLOW_INVALID_DATES
		ANSI_QUOTES
		ERROR_FOR_DIVISION_BY_ZERO
		HIGH_NOT_PRECEDENCE
		IGNORE_SPACE
		NO_AUTO_CREATE_USER
		NO_AUTO_VALUE_ON_ZERO
		NO_BACKSLASH_ESCAPES
		NO_DIR_IN_CREATE
		NO_ENGINE_SUBSTITUTION
		NO_FIELD_OPTIONS
		NO_KEY_OPTIONS
		NO_TABLE_OPTIONS
		NO_UNSIGNED_SUBTRACTION
		NO_ZERO_DATE
		NO_ZERO_IN_DATE
		ONLY_FULL_GROUP_BY
		PAD_CHAR_TO_FULL_LENGTH
		PIPES_AS_CONCAT
		REAL_AS_FLOAT
		STRICT_ALL_TABLES
		STRICT_TRANS_TABLES
Permitted Values (5.7.7)	Type	set
	Default	ONLY_FULL_GROUP_BY STRICT_TRANS_TABLES NO_AUTO_CREATE_USER NO_ENGINE_SUBSTITUTION
	Valid Values	ALLOW_INVALID_DATES
		ANSI_QUOTES
		ERROR_FOR_DIVISION_BY_ZERO
		HIGH_NOT_PRECEDENCE
		IGNORE_SPACE
		NO_AUTO_CREATE_USER
		NO_AUTO_VALUE_ON_ZERO
		NO_BACKSLASH_ESCAPES
		NO_DIR_IN_CREATE
		NO_ENGINE_SUBSTITUTION
		NO_FIELD_OPTIONS
		NO_KEY_OPTIONS
		NO_TABLE_OPTIONS
		NO_UNSIGNED_SUBTRACTION
		NO_ZERO_DATE
		NO_ZERO_IN_DATE
		ONLY_FULL_GROUP_BY
		PAD_CHAR_TO_FULL_LENGTH
		PIPES_AS_CONCAT
		REAL_AS_FLOAT
		STRICT_ALL_TABLES
		STRICT_TRANS_TABLES
Permitted Values (>= 5.7.8)	Type	set
	Default	ONLY_FULL_GROUP_BY STRICT_TRANS_TABLES NO_ZERO_IN_DATE NO_ZERO_DATE ERROR_FOR_DIVISION_BY_ZERO NO_AUTO_CREATE_USER NO_ENGINE_SUBSTITUTION
	Valid Values	ALLOW_INVALID_DATES
		ANSI_QUOTES
		ERROR_FOR_DIVISION_BY_ZERO
		HIGH_NOT_PRECEDENCE
		IGNORE_SPACE
		NO_AUTO_CREATE_USER
		NO_AUTO_VALUE_ON_ZERO
		NO_BACKSLASH_ESCAPES
		NO_DIR_IN_CREATE
		NO_ENGINE_SUBSTITUTION
		NO_FIELD_OPTIONS
		NO_KEY_OPTIONS
		NO_TABLE_OPTIONS
		NO_UNSIGNED_SUBTRACTION
		NO_ZERO_DATE
		NO_ZERO_IN_DATE
		ONLY_FULL_GROUP_BY
		PAD_CHAR_TO_FULL_LENGTH
		PIPES_AS_CONCAT
		REAL_AS_FLOAT
		STRICT_ALL_TABLES
		STRICT_TRANS_TABLES

Set the SQL mode. See Section 5.1.8, "Server SQL Modes".
- Note
- MySQL installation programs may configure the SQL mode during the installation process. For example,mysql_install_db creates a default option file named my.cnf in the base installation directory. This file contains a line that sets the SQL mode; see Section 4.4.2, "mysql_install_db — Initialize MySQL Data Directory".
- If the SQL mode differs from the default or from what you expect, check for a setting in an option file that the server reads at startup.
--sysdate-is-now

Command-Line Format	--sysdate-is-now
Permitted Values	Type	boolean
Permitted Values	Default	FALSE

SYSDATE() by default returns the time at which it executes, not the time at which the statement in which it occurs begins executing. This differs from the behavior of NOW(). This option causes SYSDATE() to be an alias for NOW(). For information about the implications for binary logging and replication, see the description for SYSDATE() in Section 12.7, "Date and Time Functions" and for SET TIMESTAMP in Section 5.1.5, "Server System Variables".
--tc-heuristic-recover={COMMIT|ROLLBACK}

Command-Line Format	--tc-heuristic-recover=name
Permitted Values	Type	enumeration
	Default	COMMIT
	Valid Values	COMMIT
		ROLLBACK

The type of decision to use in the heuristic recovery process. To use this option, two or more storage engines that support XA transactions must be installed.
Prior to MySQL 5.7.8, the server interprets --tc-heuristic-recover option values incorrectly due to an off-by-one error (Bug #70860).
--temp-pool

Deprecated	5.7.18
Command-Line Format	--temp-pool
Permitted Values (Linux)	Type	boolean
Permitted Values (Linux)	Default	TRUE
Permitted Values (Other)	Type	boolean
Permitted Values (Other)	Default	FALSE

This option is ignored except on Linux. On Linux, it causes most temporary files created by the server to use a small set of names, rather than a unique name for each new file. This works around a problem in the Linux kernel dealing with creating many new files with different names. With the old behavior, Linux seems to "leak" memory, because it is being allocated to the directory entry cache rather than to the disk cache.
As of MySQL 5.7.18, this option is deprecated and is removed in MySQL 8.0.
--transaction-isolation=level

Command-Line Format	--transaction-isolation=name
System Variable (>= 5.7.20)	Name	transaction_isolation
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values	Type	enumeration
	Default	REPEATABLE-READ
	Valid Values	READ-UNCOMMITTED
		READ-COMMITTED
		REPEATABLE-READ
		SERIALIZABLE

Sets the default transaction isolation level. The level value can be READ-UNCOMMITTED, READ-COMMITTED,REPEATABLE-READ, or SERIALIZABLE. See Section 13.3.6, "SET TRANSACTION Syntax".
The default transaction isolation level can also be set at runtime using the SET TRANSACTION statement or by setting the tx_isolation (or, as of MySQL 5.7.20, transaction_isolation) system variable.
--transaction-read-only

Command-Line Format	--transaction-read-only
System Variable (>= 5.7.20)	Name	transaction_read_only
	Variable Scope	Global, Session
	Dynamic Variable	Yes
Permitted Values	Type	boolean
Permitted Values	Default	OFF

Sets the default transaction access mode. By default, read-only mode is disabled, so the mode is read/write.
To set the default transaction access mode at runtime, use the SET TRANSACTION statement or set the tx_read_only (or, as of MySQL 5.7.20, transaction_read_only) system variable. See Section 13.3.6, "SET TRANSACTION Syntax".
--tmpdir=dir_name, -t dir_name

Command-Line Format	--tmpdir=dir_name
System Variable	Name	tmpdir
	Variable Scope	Global
	Dynamic Variable	No
Permitted Values	Type	directory name

The path of the directory to use for creating temporary files. It might be useful if your default /tmp directory resides on a partition that is too small to hold temporary tables. This option accepts several paths that are used in round-robin fashion. Paths should be separated by colon characters (:) on Unix and semicolon characters (;) on Windows. If the MySQL server is acting as a replication slave, you should not set --tmpdir to point to a directory on a memory-based file system or to a directory that is cleared when the server host restarts. For more information about the storage location of temporary files, see Section B.5.3.5, "Where MySQL Stores Temporary Files". A replication slave needs some of its temporary files to survive a machine restart so that it can replicate temporary tables or LOAD DATA INFILE operations. If files in the temporary file directory are lost when the server restarts, replication fails.
--user={user_name|user_id}, -u {user_name|user_id}

Command-Line Format	--user=name
Permitted Values	Type	string

Run the mysqld server as the user having the name user_name or the numeric user ID user_id. ("User" in this context refers to a system login account, not a MySQL user listed in the grant tables.)
This option is mandatory when starting mysqld as root. The server changes its user ID during its startup sequence, causing it to run as that particular user rather than as root. See Section 6.1.1, "Security Guidelines".
To avoid a possible security hole where a user adds a --user=root option to a my.cnf file (thus causing the server to run as root), mysqld uses only the first --user option specified and produces a warning if there are multiple --user options. Options in /etc/my.cnf and $MYSQL_HOME/my.cnf are processed before command-line options, so it is recommended that you put a --user option in /etc/my.cnf and specify a value other thanroot. The option in /etc/my.cnf is found before any other --user options, which ensures that the server runs as a user other than root, and that a warning results if any other --user option is found.
--verbose, -v
Use this option with the --help option for detailed help.
--version, -V
Display version information and exit.

5.1.5 Server System Variables

The MySQL server maintains many system variables that indicate how it is configured. Each system variable has a default value. System variables can be set at server startup using options on the command line or in an option file. Most of them can be changed dynamically at runtime using the SET statement, which enables you to modify operation of the server without having to stop and restart it. Setting the global value of a system variable requires the SUPER privilege. For some system variables, setting the session value also requires the SUPER privilege; if so, it is indicated in the variable description. You can also use system variable values in expressions.

There are several ways to see the names and values of system variables:

To see the values that a server will use based on its compiled-in defaults and any option files that it reads, use this command:
mysqld --verbose --help
To see the values that a server will use based on its compiled-in defaults, ignoring the settings in any option files, use this command:
mysqld --no-defaults --verbose --help
To see the current values used by a running server, use the SHOW VARIABLES statement or the Performance Schema system variable tables. See Section 25.11.13, "Performance Schema System Variable Tables".

This section includes a table that lists all system variables and following the table provides a description of each one. Variables with no version indicated are present in all MySQL 5.7 releases. For more information about manipulation of system variables, see Section 5.1.6, "Using System Variables".

Table 5.2 System Variable Summary

Name	Cmd-Line	Option File	System Var	Var Scope	Dynamic
audit_log_buffer_size	Yes	Yes	Yes	Global	No
audit_log_connection_policy	Yes	Yes	Yes	Global	Yes
audit_log_current_session			Yes	Both	No
audit_log_exclude_accounts	Yes	Yes	Yes	Global	Yes
audit_log_file	Yes	Yes	Yes	Global	No
audit_log_filter_id			Yes	Both	No
audit_log_flush			Yes	Global	Yes
audit_log_format	Yes	Yes	Yes	Global	No
audit_log_include_accounts	Yes	Yes	Yes	Global	Yes
audit_log_policy	Yes	Yes	Yes	Global	No
audit_log_rotate_on_size	Yes	Yes	Yes	Global	Yes
audit_log_statement_policy	Yes	Yes	Yes	Global	Yes
audit_log_strategy	Yes	Yes	Yes	Global	No
authentication_ldap_sasl_auth_method_name	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_bind_base_dn	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_bind_root_dn	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_bind_root_pwd	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_ca_path	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_group_search_attr	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_init_pool_size	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_log_status	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_max_pool_size	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_server_host	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_server_port	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_tls	Yes	Yes	Yes	Global	Yes
authentication_ldap_sasl_user_search_attr	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_auth_method_name	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_bind_base_dn	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_bind_root_dn	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_bind_root_pwd	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_ca_path	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_group_search_attr	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_init_pool_size	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_log_status	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_max_pool_size	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_server_host	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_server_port	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_tls	Yes	Yes	Yes	Global	Yes
authentication_ldap_simple_user_search_attr	Yes	Yes	Yes	Global	Yes
auto_generate_certs	Yes	Yes	Yes	Global	No
auto_increment_increment			Yes	Both	Yes
auto_increment_offset			Yes	Both	Yes
autocommit	Yes	Yes	Yes	Both	Yes
automatic_sp_privileges			Yes	Global	Yes
avoid_temporal_upgrade	Yes	Yes	Yes	Global	Yes
back_log			Yes	Global	No
basedir	Yes	Yes	Yes	Global	No
big-tables	Yes	Yes			Yes
- Variable: big_tables			Yes	Both	Yes
bind-address	Yes	Yes			No
- Variable: bind_address			Yes	Global	No
binlog_cache_size	Yes	Yes	Yes	Global	Yes
binlog_checksum			Yes	Global	Yes
binlog_direct_non_transactional_updates	Yes	Yes	Yes	Both	Yes
binlog_error_action	Yes	Yes	Yes	Both	Yes
binlog-format	Yes	Yes			Yes
- Variable: binlog_format			Yes	Both	Yes
binlog_group_commit_sync_delay	Yes	Yes	Yes	Global	Yes
binlog_group_commit_sync_no_delay_count	Yes	Yes	Yes	Global	Yes
binlog_gtid_simple_recovery	Yes	Yes	Yes	Global	No
binlog_max_flush_queue_time			Yes	Global	Yes
binlog_order_commits			Yes	Global	Yes
binlog_row_image	Yes	Yes	Yes	Both	Yes
binlog_rows_query_log_events			Yes	Both	Yes
binlog_stmt_cache_size	Yes	Yes	Yes	Global	Yes
binlogging_impossible_mode	Yes	Yes	Yes	Both	Yes
block_encryption_mode	Yes	Yes	Yes	Both	Yes
bulk_insert_buffer_size	Yes	Yes	Yes	Both	Yes
character_set_client			Yes	Both	Yes
character_set_connection			Yes	Both	Yes
character_set_database ^[a]			Yes	Both	Yes
character-set-filesystem	Yes	Yes			Yes
- Variable: character_set_filesystem			Yes	Both	Yes
character_set_results			Yes	Both	Yes
character-set-server	Yes	Yes			Yes
- Variable: character_set_server			Yes	Both	Yes
character_set_system			Yes	Global	No
character-sets-dir	Yes	Yes			No
- Variable: character_sets_dir			Yes	Global	No
check_proxy_users	Yes	Yes	Yes	Global	Yes
collation_connection			Yes	Both	Yes
collation_database ^[b]			Yes	Both	Yes
collation-server	Yes	Yes			Yes
- Variable: collation_server			Yes	Both	Yes
completion_type	Yes	Yes	Yes	Both	Yes
concurrent_insert	Yes	Yes	Yes	Global	Yes
connect_timeout	Yes	Yes	Yes	Global	Yes
connection_control_failed_connections_threshold	Yes	Yes	Yes	Global	Yes
connection_control_max_connection_delay	Yes	Yes	Yes	Global	Yes
connection_control_min_connection_delay	Yes	Yes	Yes	Global	Yes
core_file			Yes	Global	No
daemon_memcached_enable_binlog	Yes	Yes	Yes	Global	No
daemon_memcached_engine_lib_name	Yes	Yes	Yes	Global	No
daemon_memcached_engine_lib_path	Yes	Yes	Yes	Global	No
daemon_memcached_option	Yes	Yes	Yes	Global	No
daemon_memcached_r_batch_size	Yes	Yes	Yes	Global	No
daemon_memcached_w_batch_size	Yes	Yes	Yes	Global	No
datadir	Yes	Yes	Yes	Global	No
date_format			Yes	Global	No
datetime_format			Yes	Global	No
debug	Yes	Yes	Yes	Both	Yes
debug_sync			Yes	Session	Yes
default_authentication_plugin	Yes	Yes	Yes	Global	No
default_password_lifetime	Yes	Yes	Yes	Global	Yes
default-storage-engine	Yes	Yes			Yes
- Variable: default_storage_engine			Yes	Both	Yes
default_tmp_storage_engine	Yes	Yes	Yes	Both	Yes
default_week_format	Yes	Yes	Yes	Both	Yes
delay-key-write	Yes	Yes			Yes
- Variable: delay_key_write			Yes	Global	Yes
delayed_insert_limit	Yes	Yes	Yes	Global	Yes
delayed_insert_timeout	Yes	Yes	Yes	Global	Yes
delayed_queue_size	Yes	Yes	Yes	Global	Yes
disabled_storage_engines	Yes	Yes	Yes	Global	No
disconnect_on_expired_password	Yes	Yes	Yes	Session	No
div_precision_increment	Yes	Yes	Yes	Both	Yes
end_markers_in_json			Yes	Both	Yes
enforce-gtid-consistency	Yes	Yes	Yes	Global	Varies
enforce_gtid_consistency	Yes	Yes	Yes	Global	Varies
eq_range_index_dive_limit			Yes	Both	Yes
error_count			Yes	Session	No
event-scheduler	Yes	Yes			Yes
- Variable: event_scheduler			Yes	Global	Yes
executed_gtids_compression_period			Yes	Global	Yes
expire_logs_days	Yes	Yes	Yes	Global	Yes
explicit_defaults_for_timestamp	Yes	Yes	Yes	Both	Yes
external_user			Yes	Session	No
flush	Yes	Yes	Yes	Global	Yes
flush_time	Yes	Yes	Yes	Global	Yes
foreign_key_checks			Yes	Both	Yes
ft_boolean_syntax	Yes	Yes	Yes	Global	Yes
ft_max_word_len	Yes	Yes	Yes	Global	No
ft_min_word_len	Yes	Yes	Yes	Global	No
ft_query_expansion_limit	Yes	Yes	Yes	Global	No
ft_stopword_file	Yes	Yes	Yes	Global	No
general-log	Yes	Yes			Yes
- Variable: general_log			Yes	Global	Yes
general_log_file	Yes	Yes	Yes	Global	Yes
group_concat_max_len	Yes	Yes	Yes	Both	Yes
group_replication_allow_local_disjoint_gtids_join	Yes	Yes	Yes	Global	Yes
group_replication_allow_local_lower_version_join	Yes	Yes	Yes	Global	Yes
group_replication_auto_increment_increment	Yes	Yes	Yes	Global	Yes
group_replication_bootstrap_group	Yes	Yes	Yes	Global	Yes
group_replication_components_stop_timeout	Yes	Yes	Yes	Global	Yes
group_replication_compression_threshold	Yes	Yes	Yes	Global	Yes
group_replication_enforce_update_everywhere_checks	Yes	Yes	Yes	Global	Yes
group_replication_flow_control_applier_threshold	Yes	Yes	Yes	Global	Yes
group_replication_flow_control_certifier_threshold	Yes	Yes	Yes	Global	Yes
group_replication_flow_control_mode	Yes	Yes	Yes	Global	Yes
group_replication_force_members	Yes	Yes	Yes	Global	Yes
group_replication_group_name	Yes	Yes	Yes	Global	Yes
group_replication_group_seeds	Yes	Yes	Yes	Global	Yes
group_replication_gtid_assignment_block_size	Yes	Yes	Yes	Global	Yes
group_replication_ip_whitelist	Yes	Yes	Yes	Global	Yes
group_replication_local_address	Yes	Yes	Yes	Global	Yes
group_replication_poll_spin_loops	Yes	Yes	Yes	Global	Yes
group_replication_recovery_complete_at	Yes	Yes	Yes	Global	Yes
group_replication_recovery_reconnect_interval	Yes	Yes	Yes	Global	Yes
group_replication_recovery_retry_count	Yes	Yes	Yes	Global	Yes
group_replication_recovery_ssl_ca	Yes	Yes	Yes	Global	Yes
group_replication_recovery_ssl_capath	Yes	Yes	Yes	Global	Yes
group_replication_recovery_ssl_cert	Yes	Yes	Yes	Global	Yes
group_replication_recovery_ssl_cipher	Yes	Yes	Yes	Global	Yes
group_replication_recovery_ssl_crl	Yes	Yes	Yes	Global	Yes
group_replication_recovery_ssl_crlpath	Yes	Yes	Yes	Global	Yes
group_replication_recovery_ssl_key	Yes	Yes	Yes	Global	Yes
group_replication_recovery_ssl_verify_server_cert	Yes	Yes	Yes	Global	Yes
group_replication_recovery_use_ssl	Yes	Yes	Yes	Global	Yes
group_replication_single_primary_mode	Yes	Yes	Yes	Global	Yes
group_replication_ssl_mode	Yes	Yes	Yes	Global	Yes
group_replication_start_on_boot	Yes	Yes	Yes	Global	Yes
group_replication_transaction_size_limit	Yes	Yes	Yes	Global	Yes
group_replication_unreachable_majority_timeout	Yes	Yes	Yes	Global	Yes
gtid_executed			Yes	Varies	No
gtid_executed_compression_period			Yes	Global	Yes
gtid-mode	Yes	Yes			Varies
- Variable: gtid_mode			Yes	Global	Varies
gtid_mode			Yes	Global	Varies
gtid_next			Yes	Session	Yes
gtid_owned			Yes	Both	No
gtid_purged			Yes	Global	Yes
have_compress			Yes	Global	No
have_crypt			Yes	Global	No
have_dynamic_loading			Yes	Global	No
have_geometry			Yes	Global	No
have_openssl			Yes	Global	No
have_profiling			Yes	Global	No
have_query_cache			Yes	Global	No
have_rtree_keys			Yes	Global	No
have_ssl			Yes	Global	No
have_statement_timeout			Yes	Global	No
have_symlink			Yes	Global	No
host_cache_size			Yes	Global	Yes
hostname			Yes	Global	No
identity			Yes	Session	Yes
ignore-builtin-innodb	Yes	Yes			No
- Variable: ignore_builtin_innodb			Yes	Global	No
ignore_db_dirs			Yes	Global	No
init_connect	Yes	Yes	Yes	Global	Yes
init-file	Yes	Yes			No
- Variable: init_file			Yes	Global	No
init_slave	Yes	Yes	Yes	Global	Yes
innodb_adaptive_flushing	Yes	Yes	Yes	Global	Yes
innodb_adaptive_flushing_lwm	Yes	Yes	Yes	Global	Yes
innodb_adaptive_hash_index	Yes	Yes	Yes	Global	Yes
innodb_adaptive_hash_index_parts	Yes	Yes	Yes	Global	No
innodb_adaptive_max_sleep_delay	Yes	Yes	Yes	Global	Yes
innodb_additional_mem_pool_size	Yes	Yes	Yes	Global	No
innodb_api_bk_commit_interval	Yes	Yes	Yes	Global	Yes
innodb_api_disable_rowlock	Yes	Yes	Yes	Global	No
innodb_api_enable_binlog	Yes	Yes	Yes	Global	No
innodb_api_enable_mdl	Yes	Yes	Yes	Global	No
innodb_api_trx_level	Yes	Yes	Yes	Global	Yes
innodb_autoextend_increment	Yes	Yes	Yes	Global	Yes
innodb_autoinc_lock_mode	Yes	Yes	Yes	Global	No
innodb_background_drop_list_empty	Yes	Yes	Yes	Global	Yes
innodb_buffer_pool_chunk_size	Yes	Yes	Yes	Global	No
innodb_buffer_pool_dump_at_shutdown	Yes	Yes	Yes	Global	Yes
innodb_buffer_pool_dump_now	Yes	Yes	Yes	Global	Yes
innodb_buffer_pool_dump_pct	Yes	Yes	Yes	Global	Yes
innodb_buffer_pool_filename	Yes	Yes	Yes	Global	Yes
innodb_buffer_pool_instances	Yes	Yes	Yes	Global	No
innodb_buffer_pool_load_abort	Yes	Yes	Yes	Global	Yes
innodb_buffer_pool_load_at_startup	Yes	Yes	Yes	Global	No
innodb_buffer_pool_load_now	Yes	Yes	Yes	Global	Yes
innodb_buffer_pool_size	Yes	Yes	Yes	Global	Varies
innodb_change_buffer_max_size	Yes	Yes	Yes	Global	Yes
innodb_change_buffering	Yes	Yes	Yes	Global	Yes
innodb_change_buffering_debug	Yes	Yes	Yes	Global	Yes
innodb_checksum_algorithm	Yes	Yes	Yes	Global	Yes
innodb_checksums	Yes	Yes	Yes	Global	No
innodb_cmp_per_index_enabled	Yes	Yes	Yes	Global	Yes
innodb_commit_concurrency	Yes	Yes	Yes	Global	Yes
innodb_compress_debug	Yes	Yes	Yes	Global	Yes
innodb_compression_failure_threshold_pct	Yes	Yes	Yes	Global	Yes
innodb_compression_level	Yes	Yes	Yes	Global	Yes
innodb_compression_pad_pct_max	Yes	Yes	Yes	Global	Yes
innodb_concurrency_tickets	Yes	Yes	Yes	Global	Yes
innodb_create_intrinsic	Yes	Yes	Yes	Session	Yes
innodb_data_file_path	Yes	Yes	Yes	Global	No
innodb_data_home_dir	Yes	Yes	Yes	Global	No
innodb_deadlock_detect	Yes	Yes	Yes	Global	Yes
innodb_default_row_format	Yes	Yes	Yes	Global	Yes
innodb_disable_resize_buffer_pool_debug	Yes	Yes	Yes	Global	Yes
innodb_disable_sort_file_cache	Yes	Yes	Yes	Global	Yes
innodb_doublewrite	Yes	Yes	Yes	Global	No
innodb_fast_shutdown	Yes	Yes	Yes	Global	Yes
innodb_fil_make_page_dirty_debug	Yes	Yes	Yes	Global	Yes
innodb_file_format	Yes	Yes	Yes	Global	Yes
innodb_file_format_check	Yes	Yes	Yes	Global	No
innodb_file_format_max	Yes	Yes	Yes	Global	Yes
innodb_file_per_table	Yes	Yes	Yes	Global	Yes
innodb_fill_factor	Yes	Yes	Yes	Global	Yes
innodb_flush_log_at_timeout			Yes	Global	Yes
innodb_flush_log_at_trx_commit	Yes	Yes	Yes	Global	Yes
innodb_flush_method	Yes	Yes	Yes	Global	No
innodb_flush_neighbors	Yes	Yes	Yes	Global	Yes
innodb_flush_sync	Yes	Yes	Yes	Global	Yes
innodb_flushing_avg_loops	Yes	Yes	Yes	Global	Yes
innodb_force_load_corrupted	Yes	Yes	Yes	Global	No
innodb_force_recovery	Yes	Yes	Yes	Global	No
innodb_ft_aux_table	Yes	Yes	Yes	Global	Yes
innodb_ft_cache_size	Yes	Yes	Yes	Global	No
innodb_ft_enable_diag_print	Yes	Yes	Yes	Global	Yes
innodb_ft_enable_stopword	Yes	Yes	Yes	Global	Yes
innodb_ft_max_token_size	Yes	Yes	Yes	Global	No
innodb_ft_min_token_size	Yes	Yes	Yes	Global	No
innodb_ft_num_word_optimize	Yes	Yes	Yes	Global	Yes
innodb_ft_result_cache_limit	Yes	Yes	Yes	Global	Yes
innodb_ft_server_stopword_table	Yes	Yes	Yes	Global	Yes
innodb_ft_sort_pll_degree	Yes	Yes	Yes	Global	No
innodb_ft_total_cache_size	Yes	Yes	Yes	Global	No
innodb_ft_user_stopword_table	Yes	Yes	Yes	Both	Yes
innodb_io_capacity	Yes	Yes	Yes	Global	Yes
innodb_io_capacity_max	Yes	Yes	Yes	Global	Yes
innodb_large_prefix	Yes	Yes	Yes	Global	Yes
innodb_limit_optimistic_insert_debug	Yes	Yes	Yes	Global	Yes
innodb_lock_wait_timeout	Yes	Yes	Yes	Both	Yes
innodb_locks_unsafe_for_binlog	Yes	Yes	Yes	Global	No
innodb_log_buffer_size	Yes	Yes	Yes	Global	No
innodb_log_checksum_algorithm	Yes	Yes	Yes	Global	Yes
innodb_log_checksums	Yes	Yes	Yes	Global	Yes
innodb_log_compressed_pages	Yes	Yes	Yes	Global	Yes
innodb_log_file_size	Yes	Yes	Yes	Global	No
innodb_log_files_in_group	Yes	Yes	Yes	Global	No
innodb_log_group_home_dir	Yes	Yes	Yes	Global	No
innodb_log_write_ahead_size	Yes	Yes	Yes	Global	Yes
innodb_lru_scan_depth	Yes	Yes	Yes	Global	Yes
innodb_max_dirty_pages_pct	Yes	Yes	Yes	Global	Yes
innodb_max_dirty_pages_pct_lwm	Yes	Yes	Yes	Global	Yes
innodb_max_purge_lag	Yes	Yes	Yes	Global	Yes
innodb_max_purge_lag_delay	Yes	Yes	Yes	Global	Yes
innodb_max_undo_log_size	Yes	Yes	Yes	Global	Yes
innodb_merge_threshold_set_all_debug	Yes	Yes	Yes	Global	Yes
innodb_monitor_disable	Yes	Yes	Yes	Global	Yes
innodb_monitor_enable	Yes	Yes	Yes	Global	Yes
innodb_monitor_reset	Yes	Yes	Yes	Global	Yes
innodb_monitor_reset_all	Yes	Yes	Yes	Global	Yes
innodb_numa_interleave	Yes	Yes	Yes	Global	No
innodb_old_blocks_pct	Yes	Yes	Yes	Global	Yes
innodb_old_blocks_time	Yes	Yes	Yes	Global	Yes
innodb_online_alter_log_max_size	Yes	Yes	Yes	Global	Yes
innodb_open_files	Yes	Yes	Yes	Global	No
innodb_optimize_fulltext_only	Yes	Yes	Yes	Global	Yes
innodb_optimize_point_storage	Yes	Yes	Yes	Session	Yes
innodb_page_cleaners	Yes	Yes	Yes	Global	No
innodb_page_size	Yes	Yes	Yes	Global	No
innodb_print_all_deadlocks	Yes	Yes	Yes	Global	Yes
innodb_purge_batch_size	Yes	Yes	Yes	Global	Yes
innodb_purge_rseg_truncate_frequency	Yes	Yes	Yes	Global	Yes
innodb_purge_threads	Yes	Yes	Yes	Global	No
innodb_random_read_ahead	Yes	Yes	Yes	Global	Yes
innodb_read_ahead_threshold	Yes	Yes	Yes	Global	Yes
innodb_read_io_threads	Yes	Yes	Yes	Global	No
innodb_read_only	Yes	Yes	Yes	Global	No
innodb_replication_delay	Yes	Yes	Yes	Global	Yes
innodb_rollback_on_timeout	Yes	Yes	Yes	Global	No
innodb_rollback_segments	Yes	Yes	Yes	Global	Yes
innodb_saved_page_number_debug	Yes	Yes	Yes	Global	Yes
innodb_sort_buffer_size	Yes	Yes	Yes	Global	No
innodb_spin_wait_delay	Yes	Yes	Yes	Global	Yes
innodb_stats_auto_recalc	Yes	Yes	Yes	Global	Yes
innodb_stats_include_delete_marked	Yes	Yes	Yes	Global	Yes
innodb_stats_method	Yes	Yes	Yes	Global	Yes
innodb_stats_on_metadata	Yes	Yes	Yes	Global	Yes
innodb_stats_persistent	Yes	Yes	Yes	Global	Yes
innodb_stats_persistent_sample_pages	Yes	Yes	Yes	Global	Yes
innodb_stats_sample_pages	Yes	Yes	Yes	Global	Yes
innodb_stats_transient_sample_pages	Yes	Yes	Yes	Global	Yes
innodb_status_output	Yes	Yes	Yes	Global	Yes
innodb_status_output_locks	Yes	Yes	Yes	Global	Yes
innodb_strict_mode	Yes	Yes	Yes	Both	Yes
innodb_support_xa	Yes	Yes	Yes	Both	Yes
innodb_sync_array_size	Yes	Yes	Yes	Global	No
innodb_sync_debug	Yes	Yes	Yes	Global	No
innodb_sync_spin_loops	Yes	Yes	Yes	Global	Yes
innodb_table_locks	Yes	Yes	Yes	Both	Yes
innodb_temp_data_file_path	Yes	Yes	Yes	Global	No
innodb_thread_concurrency	Yes	Yes	Yes	Global	Yes
innodb_thread_sleep_delay	Yes	Yes	Yes	Global	Yes
innodb_tmpdir	Yes	Yes	Yes	Both	Yes
innodb_trx_purge_view_update_only_debug	Yes	Yes	Yes	Global	Yes
innodb_trx_rseg_n_slots_debug	Yes	Yes	Yes	Global	Yes
innodb_undo_directory	Yes	Yes	Yes	Global	No
innodb_undo_log_truncate	Yes	Yes	Yes	Global	Yes
innodb_undo_logs	Yes	Yes	Yes	Global	Yes
innodb_undo_tablespaces	Yes	Yes	Yes	Global	No
innodb_use_native_aio	Yes	Yes	Yes	Global	No
innodb_use_sys_malloc	Yes	Yes	Yes	Global	No
innodb_version			Yes	Global	No
innodb_write_io_threads	Yes	Yes	Yes	Global	No
insert_id			Yes	Session	Yes
interactive_timeout	Yes	Yes	Yes	Both	Yes
internal_tmp_disk_storage_engine	Yes	Yes	Yes	Global	Yes
join_buffer_size	Yes	Yes	Yes	Both	Yes
keep_files_on_create	Yes	Yes	Yes	Both	Yes
key_buffer_size	Yes	Yes	Yes	Global	Yes
key_cache_age_threshold	Yes	Yes	Yes	Global	Yes
key_cache_block_size	Yes	Yes	Yes	Global	Yes
key_cache_division_limit	Yes	Yes	Yes	Global	Yes
keyring_aws_cmk_id	Yes	Yes	Yes	Global	Yes
keyring_aws_conf_file	Yes	Yes	Yes	Global	No
keyring_aws_data_file	Yes	Yes	Yes	Global	No
keyring_file_data	Yes	Yes	Yes	Global	Yes
keyring_okv_conf_dir	Yes	Yes	Yes	Global	Yes
language	Yes	Yes	Yes	Global	No
large_files_support			Yes	Global	No
large_page_size			Yes	Global	No
large-pages	Yes	Yes			No
- Variable: large_pages			Yes	Global	No
last_insert_id			Yes	Session	Yes
lc-messages	Yes	Yes			Yes
- Variable: lc_messages			Yes	Both	Yes
lc-messages-dir	Yes	Yes			No
- Variable: lc_messages_dir			Yes	Global	No
lc_time_names			Yes	Both	Yes
license			Yes	Global	No
local_infile			Yes	Global	Yes
lock_wait_timeout	Yes	Yes	Yes	Both	Yes
locked_in_memory			Yes	Global	No
log_backward_compatible_user_definitions	Yes	Yes	Yes	Global	Yes
log-bin	Yes	Yes	Yes	Global	No
log_bin			Yes	Global	No
log_bin_basename			Yes	Global	No
log_bin_index			Yes	Global	No
log-bin-trust-function-creators	Yes	Yes			Yes
- Variable: log_bin_trust_function_creators			Yes	Global	Yes
log-bin-use-v1-row-events	Yes	Yes			No
- Variable: log_bin_use_v1_row_events			Yes	Global	No
log_bin_use_v1_row_events	Yes	Yes	Yes	Global	No
log_builtin_as_identified_by_password	Yes	Yes	Yes	Global	Yes
log-error	Yes	Yes			No
- Variable: log_error			Yes	Global	No
log_error_verbosity	Yes	Yes	Yes	Global	Yes
log-output	Yes	Yes			Yes
- Variable: log_output			Yes	Global	Yes
log-queries-not-using-indexes	Yes	Yes			Yes
- Variable: log_queries_not_using_indexes			Yes	Global	Yes
log-slave-updates	Yes	Yes			No
- Variable: log_slave_updates			Yes	Global	No
log_slave_updates	Yes	Yes	Yes	Global	No
log_slow_admin_statements			Yes	Global	Yes
log_slow_slave_statements			Yes	Global	Yes
log_statements_unsafe_for_binlog			Yes	Global	Yes
log_syslog	Yes	Yes	Yes	Global	Yes
log_syslog_facility	Yes	Yes	Yes	Global	Yes
log_syslog_include_pid	Yes	Yes	Yes	Global	Yes
log_syslog_tag	Yes	Yes	Yes	Global	Yes
log_throttle_queries_not_using_indexes			Yes	Global	Yes
log_timestamps	Yes	Yes	Yes	Global	Yes
log-warnings	Yes	Yes			Yes
- Variable: log_warnings			Yes	Global	Yes
long_query_time	Yes	Yes	Yes	Both	Yes
low-priority-updates	Yes	Yes			Yes
- Variable: low_priority_updates			Yes	Both	Yes
lower_case_file_system			Yes	Global	No
lower_case_table_names	Yes	Yes	Yes	Global	No
master_info_repository	Yes	Yes	Yes	Global	Yes
master_verify_checksum			Yes	Global	Yes
max_allowed_packet	Yes	Yes	Yes	Both	Yes
max_binlog_cache_size	Yes	Yes	Yes	Global	Yes
max_binlog_size	Yes	Yes	Yes	Global	Yes
max_binlog_stmt_cache_size	Yes	Yes	Yes	Global	Yes
max_connect_errors	Yes	Yes	Yes	Global	Yes
max_connections	Yes	Yes	Yes	Global	Yes
max_delayed_threads	Yes	Yes	Yes	Both	Yes
max_digest_length	Yes	Yes	Yes	Global	No
max_error_count	Yes	Yes	Yes	Both	Yes
max_execution_time	Yes	Yes	Yes	Both	Yes
max_heap_table_size	Yes	Yes	Yes	Both	Yes
max_insert_delayed_threads			Yes	Both	Yes
max_join_size	Yes	Yes	Yes	Both	Yes
max_length_for_sort_data	Yes	Yes	Yes	Both	Yes
max_points_in_geometry	Yes	Yes	Yes	Global	Yes
max_prepared_stmt_count	Yes	Yes	Yes	Global	Yes
max_relay_log_size	Yes	Yes	Yes	Global	Yes
max_seeks_for_key	Yes	Yes	Yes	Both	Yes
max_sort_length	Yes	Yes	Yes	Both	Yes
max_sp_recursion_depth	Yes	Yes	Yes	Both	Yes
max_statement_time			Yes	Both	Yes
max_tmp_tables			Yes	Both	Yes
max_user_connections	Yes	Yes	Yes	Both	Yes
max_write_lock_count	Yes	Yes	Yes	Global	Yes
mecab_rc_file	Yes	Yes	Yes	Global	No
metadata_locks_cache_size			Yes	Global	No
metadata_locks_hash_instances			Yes	Global	No
min-examined-row-limit	Yes	Yes	Yes	Both	Yes
multi_range_count	Yes	Yes	Yes	Both	Yes
myisam_data_pointer_size	Yes	Yes	Yes	Global	Yes
myisam_max_sort_file_size	Yes	Yes	Yes	Global	Yes
myisam_mmap_size	Yes	Yes	Yes	Global	No
myisam_recover_options			Yes	Global	No
myisam_repair_threads	Yes	Yes	Yes	Both	Yes
myisam_sort_buffer_size	Yes	Yes	Yes	Both	Yes
myisam_stats_method	Yes	Yes	Yes	Both	Yes
myisam_use_mmap	Yes	Yes	Yes	Global	Yes
mysql_firewall_mode	Yes	Yes	Yes	Global	Yes
mysql_firewall_trace	Yes	Yes	Yes	Global	Yes
mysql_native_password_proxy_users	Yes	Yes	Yes	Global	Yes
mysqlx_bind_address	Yes	Yes	Yes	Global	No
mysqlx_connect_timeout	Yes	Yes	Yes	Global	Yes
mysqlx_max_connections	Yes	Yes	Yes	Global	Yes
mysqlx_port	Yes	Yes	Yes	Global	No
mysqlx_port_open_timeout	Yes	Yes	Yes	Global	No
mysqlx-socket	Yes	Yes	Yes	Global	No
mysqlx_socket	Yes	Yes	Yes	Global	No
mysqlx_ssl	Yes	Yes	Yes	Global	No
mysqlx_ssl_ca	Yes	Yes	Yes	Global	No
mysqlx_ssl_capath	Yes	Yes	Yes	Global	No
mysqlx_ssl_cert	Yes	Yes	Yes	Global	No
mysqlx_ssl_crl	Yes	Yes	Yes	Global	No
mysqlx_ssl_crlpath	Yes	Yes	Yes	Global	No
mysqlx_ssl_key	Yes	Yes	Yes	Global	No
named_pipe			Yes	Global	No
ndb-allow-copying-alter-table	Yes	Yes	Yes	Both	Yes
ndb_autoincrement_prefetch_sz	Yes	Yes	Yes	Both	Yes
ndb-batch-size	Yes	Yes	Yes	Global	No
ndb-blob-read-batch-bytes	Yes	Yes	Yes	Both	Yes
ndb-blob-write-batch-bytes	Yes	Yes	Yes	Both	Yes
ndb_cache_check_time	Yes	Yes	Yes	Global	Yes
ndb_clear_apply_status	Yes		Yes	Global	Yes
ndb-cluster-connection-pool	Yes	Yes	Yes	Global	No
ndb-cluster-connection-pool-nodeids	Yes	Yes	Yes	Global	No
ndb_data_node_neighbour	Yes	Yes	Yes	Global	Yes
ndb-default-column-format	Yes	Yes			Yes
- Variable: ndb_default_column_format			Yes	Global	Yes
ndb_default_column_format	Yes	Yes	Yes	Global	Yes
ndb-deferred-constraints	Yes	Yes			Yes
- Variable: ndb_deferred_constraints			Yes	Both	Yes
ndb_deferred_constraints	Yes	Yes	Yes	Both	Yes
ndb-distribution	Yes	Yes			Yes
- Variable: ndb_distribution			Yes	Global	Yes
ndb_distribution	Yes	Yes	Yes	Global	Yes
ndb_eventbuffer_free_percent	Yes	Yes	Yes	Global	Yes
ndb_eventbuffer_max_alloc	Yes	Yes	Yes	Global	Yes
ndb_extra_logging	Yes	Yes	Yes	Global	Yes
ndb_force_send	Yes	Yes	Yes	Both	Yes
ndb_fully_replicated	Yes	Yes	Yes	Both	Yes
ndb_index_stat_enable	Yes	Yes	Yes	Both	Yes
ndb_index_stat_option	Yes	Yes	Yes	Both	Yes
ndb_join_pushdown			Yes	Both	Yes
ndb-log-apply-status	Yes	Yes			No
- Variable: ndb_log_apply_status			Yes	Global	No
ndb_log_apply_status	Yes	Yes	Yes	Global	No
ndb_log_bin	Yes		Yes	Both	Yes
ndb_log_binlog_index	Yes		Yes	Global	Yes
ndb-log-empty-epochs	Yes	Yes	Yes	Global	Yes
ndb_log_empty_epochs	Yes	Yes	Yes	Global	Yes
ndb-log-empty-update	Yes	Yes	Yes	Global	Yes
ndb_log_empty_update	Yes	Yes	Yes	Global	Yes
ndb-log-exclusive-reads	Yes	Yes			Yes
- Variable: ndb_log_exclusive_reads			Yes	Both	Yes
ndb_log_exclusive_reads	Yes	Yes	Yes	Both	Yes
ndb-log-orig	Yes	Yes			No
- Variable: ndb_log_orig			Yes	Global	No
ndb_log_orig	Yes	Yes	Yes	Global	No
ndb-log-transaction-id	Yes	Yes			No
- Variable: ndb_log_transaction_id			Yes	Global	No
ndb_log_transaction_id			Yes	Global	No
ndb-log-update-minimal	Yes	Yes	Yes	Global	Yes
ndb_log_updated_only	Yes	Yes	Yes	Global	Yes
ndb_optimization_delay			Yes	Global	Yes
ndb_optimized_node_selection	Yes	Yes	Yes	Global	No
ndb_read_backup	Yes	Yes	Yes	Global	Yes
ndb_recv_thread_cpu_mask			Yes	Global	Yes
ndb_report_thresh_binlog_epoch_slip	Yes	Yes	Yes	Global	Yes
ndb_report_thresh_binlog_mem_usage	Yes	Yes	Yes	Global	Yes
ndb_show_foreign_key_mock_tables	Yes	Yes	Yes	Global	Yes
ndb_slave_conflict_role	Yes	Yes	Yes	Global	Yes
Ndb_slave_max_replicated_epoch			Yes	Global	No
Ndb_system_name			Yes	Global	No
ndb_table_no_logging			Yes	Session	Yes
ndb_table_temporary			Yes	Session	Yes
ndb_use_copying_alter_table			Yes	Both	No
ndb_use_exact_count			Yes	Both	Yes
ndb_use_transactions	Yes	Yes	Yes	Both	Yes
ndb_version			Yes	Global	No
ndb_version_string			Yes	Global	No
ndb-wait-connected	Yes	Yes	Yes	Global	No
ndb-wait-setup	Yes	Yes	Yes	Global	No
ndbinfo_database			Yes	Global	No
ndbinfo_max_bytes	Yes		Yes	Both	Yes
ndbinfo_max_rows	Yes		Yes	Both	Yes
ndbinfo_offline			Yes	Global	Yes
ndbinfo_show_hidden	Yes		Yes	Both	Yes
ndbinfo_table_prefix	Yes		Yes	Both	Yes
ndbinfo_version			Yes	Global	No
net_buffer_length	Yes	Yes	Yes	Both	Yes
net_read_timeout	Yes	Yes	Yes	Both	Yes
net_retry_count	Yes	Yes	Yes	Both	Yes
net_write_timeout	Yes	Yes	Yes	Both	Yes
new	Yes	Yes	Yes	Both	Yes
ngram_token_size	Yes	Yes	Yes	Global	No
offline_mode	Yes	Yes	Yes	Global	Yes
old	Yes	Yes	Yes	Global	No
old-alter-table	Yes	Yes			Yes
- Variable: old_alter_table			Yes	Both	Yes
old_passwords			Yes	Both	Yes
open-files-limit	Yes	Yes			No
- Variable: open_files_limit			Yes	Global	No
optimizer_prune_level	Yes	Yes	Yes	Both	Yes
optimizer_search_depth	Yes	Yes	Yes	Both	Yes
optimizer_switch	Yes	Yes	Yes	Both	Yes
optimizer_trace			Yes	Both	Yes
optimizer_trace_features			Yes	Both	Yes
optimizer_trace_limit			Yes	Both	Yes
optimizer_trace_max_mem_size			Yes	Both	Yes
optimizer_trace_offset			Yes	Both	Yes
parser_max_mem_size	Yes	Yes	Yes	Both	Yes
performance_schema	Yes	Yes	Yes	Global	No
performance_schema_accounts_size	Yes	Yes	Yes	Global	No
performance_schema_digests_size	Yes	Yes	Yes	Global	No
performance_schema_events_stages_history_long_size	Yes	Yes	Yes	Global	No
performance_schema_events_stages_history_size	Yes	Yes	Yes	Global	No
performance_schema_events_statements_history_long_size	Yes	Yes	Yes	Global	No
performance_schema_events_statements_history_size	Yes	Yes	Yes	Global	No
performance_schema_events_transactions_history_long_size	Yes	Yes	Yes	Global	No
performance_schema_events_transactions_history_size	Yes	Yes	Yes	Global	No
performance_schema_events_waits_history_long_size	Yes	Yes	Yes	Global	No
performance_schema_events_waits_history_size	Yes	Yes	Yes	Global	No
performance_schema_hosts_size	Yes	Yes	Yes	Global	No
performance_schema_max_cond_classes	Yes	Yes	Yes	Global	No
performance_schema_max_cond_instances	Yes	Yes	Yes	Global	No
performance_schema_max_digest_length	Yes	Yes	Yes	Global	No
performance_schema_max_file_classes	Yes	Yes	Yes	Global	No
performance_schema_max_file_handles	Yes	Yes	Yes	Global	No
performance_schema_max_file_instances	Yes	Yes	Yes	Global	No
performance_schema_max_index_stat	Yes	Yes	Yes	Global	No
performance_schema_max_memory_classes	Yes	Yes	Yes	Global	No
performance_schema_max_metadata_locks	Yes	Yes	Yes	Global	No
performance_schema_max_mutex_classes	Yes	Yes	Yes	Global	No
performance_schema_max_mutex_instances	Yes	Yes	Yes	Global	No
performance_schema_max_prepared_statements_instances	Yes	Yes	Yes	Global	No
performance_schema_max_program_instances	Yes	Yes	Yes	Global	No
performance_schema_max_rwlock_classes	Yes	Yes	Yes	Global	No
performance_schema_max_rwlock_instances	Yes	Yes	Yes	Global	No
performance_schema_max_socket_classes	Yes	Yes	Yes	Global	No
performance_schema_max_socket_instances	Yes	Yes	Yes	Global	No
performance_schema_max_sql_text_length	Yes	Yes	Yes	Global	No
performance_schema_max_stage_classes	Yes	Yes	Yes	Global	No
performance_schema_max_statement_classes	Yes	Yes	Yes	Global	No
performance_schema_max_statement_stack	Yes	Yes	Yes	Global	No
performance_schema_max_table_handles	Yes	Yes	Yes	Global	No
performance_schema_max_table_instances	Yes	Yes	Yes	Global	No
performance_schema_max_table_lock_stat	Yes	Yes	Yes	Global	No
performance_schema_max_thread_classes	Yes	Yes	Yes	Global	No
performance_schema_max_thread_instances	Yes	Yes	Yes	Global	No
performance_schema_session_connect_attrs_size	Yes	Yes	Yes	Global	No
performance_schema_setup_actors_size	Yes	Yes	Yes	Global	No
performance_schema_setup_objects_size	Yes	Yes	Yes	Global	No
performance_schema_users_size	Yes	Yes	Yes	Global	No
pid-file	Yes	Yes			No
- Variable: pid_file			Yes	Global	No
plugin_dir	Yes	Yes	Yes	Global	No
port	Yes	Yes	Yes	Global	No
preload_buffer_size	Yes	Yes	Yes	Both	Yes
profiling			Yes	Both	Yes
profiling_history_size	Yes	Yes	Yes	Both	Yes
protocol_version			Yes	Global	No
proxy_user			Yes	Session	No
pseudo_slave_mode			Yes	Session	Yes
pseudo_thread_id			Yes	Session	Yes
query_alloc_block_size	Yes	Yes	Yes	Both	Yes
query_cache_limit	Yes	Yes	Yes	Global	Yes
query_cache_min_res_unit	Yes	Yes	Yes	Global	Yes
query_cache_size	Yes	Yes	Yes	Global	Yes
query_cache_type	Yes	Yes	Yes	Both	Yes
query_cache_wlock_invalidate	Yes	Yes	Yes	Both	Yes
query_prealloc_size	Yes	Yes	Yes	Both	Yes
rand_seed1			Yes	Session	Yes
rand_seed2			Yes	Session	Yes
range_alloc_block_size	Yes	Yes	Yes	Both	Yes
range_optimizer_max_mem_size	Yes	Yes	Yes	Both	Yes
rbr_exec_mode			Yes	Session	Yes
read_buffer_size	Yes	Yes	Yes	Both	Yes
read_only	Yes	Yes	Yes	Global	Yes
read_rnd_buffer_size	Yes	Yes	Yes	Both	Yes
relay-log	Yes	Yes			No
- Variable: relay_log			Yes	Global	No
relay_log_basename			Yes	Global	No
relay-log-index	Yes	Yes			No
- Variable: relay_log_index			Yes	Global	No
relay_log_index	Yes	Yes	Yes	Global	No
relay_log_info_file	Yes	Yes	Yes	Global	No
relay_log_info_repository			Yes	Global	Yes
relay_log_purge	Yes	Yes	Yes	Global	Yes
relay_log_recovery	Yes	Yes	Yes	Global	No
relay_log_space_limit	Yes	Yes	Yes	Global	No
report-host	Yes	Yes			No
- Variable: report_host			Yes	Global	No
report-password	Yes	Yes			No
- Variable: report_password			Yes	Global	No
report-port	Yes	Yes			No
- Variable: report_port			Yes	Global	No
report-user	Yes	Yes			No
- Variable: report_user			Yes	Global	No
require_secure_transport	Yes	Yes	Yes	Global	Yes
rewriter_enabled			Yes	Global	Yes
rewriter_verbose			Yes	Global	Yes
rpl_semi_sync_master_enabled			Yes	Global	Yes
rpl_semi_sync_master_timeout			Yes	Global	Yes
rpl_semi_sync_master_trace_level			Yes	Global	Yes
rpl_semi_sync_master_wait_for_slave_count			Yes	Global	Yes
rpl_semi_sync_master_wait_no_slave			Yes	Global	Yes
rpl_semi_sync_master_wait_point			Yes	Global	Yes
rpl_semi_sync_slave_enabled			Yes	Global	Yes
rpl_semi_sync_slave_trace_level			Yes	Global	Yes
rpl_stop_slave_timeout	Yes	Yes	Yes	Global	Yes
secure-auth	Yes	Yes			Yes
- Variable: secure_auth			Yes	Global	Yes
secure-file-priv	Yes	Yes			No
- Variable: secure_file_priv			Yes	Global	No
server-id	Yes	Yes			Yes
- Variable: server_id			Yes	Global	Yes
server-id-bits	Yes	Yes			No
- Variable: server_id_bits			Yes	Global	No
server_id_bits	Yes	Yes	Yes	Global	No
server_uuid			Yes	Global	No
session_track_gtids	Yes	Yes	Yes	Both	Yes
session_track_schema	Yes	Yes	Yes	Both	Yes
session_track_state_change	Yes	Yes	Yes	Both	Yes
session_track_system_variables	Yes	Yes	Yes	Both	Yes
sha256_password_auto_generate_rsa_keys	Yes	Yes	Yes	Global	No
sha256_password_private_key_path			Yes	Global	No
sha256_password_proxy_users	Yes	Yes	Yes	Global	Yes
sha256_password_public_key_path			Yes	Global	No
shared_memory	Yes	Yes	Yes	Global	No
shared_memory_base_name	Yes	Yes	Yes	Global	No
show_compatibility_56	Yes	Yes	Yes	Global	Yes
show_old_temporals	Yes	Yes	Yes	Both	Yes
simplified_binlog_gtid_recovery	Yes	Yes	Yes	Global	No
skip_external_locking	Yes	Yes	Yes	Global	No
skip-name-resolve	Yes	Yes			No
- Variable: skip_name_resolve			Yes	Global	No
skip-networking	Yes	Yes			No
- Variable: skip_networking			Yes	Global	No
skip-show-database	Yes	Yes			No
- Variable: skip_show_database			Yes	Global	No
slave_allow_batching	Yes	Yes	Yes	Global	Yes
slave_checkpoint_group	Yes	Yes	Yes	Global	Yes
slave_checkpoint_period	Yes	Yes	Yes	Global	Yes
slave_compressed_protocol	Yes	Yes	Yes	Global	Yes
slave_exec_mode	Yes	Yes	Yes	Global	Yes
slave-load-tmpdir	Yes	Yes			No
- Variable: slave_load_tmpdir			Yes	Global	No
slave_max_allowed_packet			Yes	Global	Yes
slave-net-timeout	Yes	Yes			Yes
- Variable: slave_net_timeout			Yes	Global	Yes
slave_parallel_type			Yes	Global	Yes
slave_parallel_workers	Yes		Yes	Global	Yes
slave_pending_jobs_size_max			Yes	Global	Yes
slave_preserve_commit_order	Yes		Yes	Global	Yes
slave_rows_search_algorithms			Yes	Global	Yes
slave-skip-errors	Yes	Yes			No
- Variable: slave_skip_errors			Yes	Global	No
slave_sql_verify_checksum			Yes	Global	Yes
slave_transaction_retries	Yes	Yes	Yes	Global	Yes
slave_type_conversions	Yes	Yes	Yes	Global	No
slow_launch_time	Yes	Yes	Yes	Global	Yes
slow-query-log	Yes	Yes			Yes
- Variable: slow_query_log			Yes	Global	Yes
slow_query_log_file	Yes	Yes	Yes	Global	Yes
socket	Yes	Yes	Yes	Global	No
sort_buffer_size	Yes	Yes	Yes	Both	Yes
sql_auto_is_null			Yes	Both	Yes
sql_big_selects			Yes	Both	Yes
sql_buffer_result			Yes	Both	Yes
sql_log_bin			Yes	Session	Yes
sql_log_off			Yes	Both	Yes
sql-mode	Yes	Yes			Yes
- Variable: sql_mode			Yes	Both	Yes
sql_notes			Yes	Both	Yes
sql_quote_show_create			Yes	Both	Yes
sql_safe_updates			Yes	Both	Yes
sql_select_limit			Yes	Both	Yes
sql_slave_skip_counter			Yes	Global	Yes
sql_warnings			Yes	Both	Yes
ssl-ca	Yes	Yes			No
- Variable: ssl_ca			Yes	Global	No
ssl-capath	Yes	Yes			No
- Variable: ssl_capath			Yes	Global	No
ssl-cert	Yes	Yes			No
- Variable: ssl_cert			Yes	Global	No
ssl-cipher	Yes	Yes			No
- Variable: ssl_cipher			Yes	Global	No
ssl-crl	Yes	Yes			No
- Variable: ssl_crl			Yes	Global	No
ssl-crlpath	Yes	Yes			No
- Variable: ssl_crlpath			Yes	Global	No
ssl-key	Yes	Yes			No
- Variable: ssl_key			Yes	Global	No
storage_engine			Yes	Both	Yes
stored_program_cache	Yes	Yes	Yes	Global	Yes
super_read_only	Yes	Yes	Yes	Global	Yes
sync_binlog	Yes	Yes	Yes	Global	Yes
sync_frm	Yes	Yes	Yes	Global	Yes
sync_master_info	Yes	Yes	Yes	Global	Yes
sync_relay_log	Yes	Yes	Yes	Global	Yes
sync_relay_log_info	Yes	Yes	Yes	Global	Yes
system_time_zone			Yes	Global	No
table_definition_cache			Yes	Global	Yes
table_open_cache			Yes	Global	Yes
table_open_cache_instances			Yes	Global	No
thread_cache_size	Yes	Yes	Yes	Global	Yes
thread_concurrency	Yes	Yes	Yes	Global	No
thread_handling	Yes	Yes	Yes	Global	No
thread_pool_algorithm	Yes	Yes	Yes	Global	No
thread_pool_high_priority_connection	Yes	Yes	Yes	Both	Yes
thread_pool_max_unused_threads	Yes	Yes	Yes	Global	Yes
thread_pool_prio_kickup_timer	Yes	Yes	Yes	Both	Yes
thread_pool_size	Yes	Yes	Yes	Global	No
thread_pool_stall_limit	Yes	Yes	Yes	Global	Yes
thread_stack	Yes	Yes	Yes	Global	No
time_format			Yes	Global	No
time_zone			Yes	Both	Yes
timed_mutexes	Yes	Yes	Yes	Global	Yes
timestamp			Yes	Session	Yes
tls_version	Yes	Yes	Yes	Global	No
tmp_table_size	Yes	Yes	Yes	Both	Yes
tmpdir	Yes	Yes	Yes	Global	No
transaction_alloc_block_size	Yes	Yes	Yes	Both	Yes
transaction_allow_batching			Yes	Session	Yes
transaction-isolation	Yes	Yes			Yes
- Variable: tx_isolation			Yes	Both	Yes
transaction_prealloc_size	Yes	Yes	Yes	Both	Yes
transaction-read-only	Yes	Yes			Yes
- Variable: tx_read_only			Yes	Both	Yes
transaction_write_set_extraction	Yes		Yes	Both	Yes
tx_isolation			Yes	Both	Yes
tx_read_only			Yes	Both	Yes
unique_checks			Yes	Both	Yes
updatable_views_with_limit	Yes	Yes	Yes	Both	Yes
validate_password_check_user_name	Yes	Yes	Yes	Global	Yes
validate_password_dictionary_file			Yes	Global	Varies
validate_password_length			Yes	Global	Yes
validate_password_mixed_case_count			Yes	Global	Yes
validate_password_number_count			Yes	Global	Yes
validate_password_policy			Yes	Global	Yes
validate_password_special_char_count			Yes	Global	Yes
validate_user_plugins			Yes	Global	No
version			Yes	Global	No
version_comment			Yes	Global	No
version_compile_machine			Yes	Global	No
version_compile_os			Yes	Global	No
version_tokens_session	Yes	Yes	Yes	Both	Yes
version_tokens_session_number	Yes	Yes	Yes	Both	No
wait_timeout	Yes	Yes	Yes	Both	Yes
warning_count			Yes	Session	No

^[a]This option is dynamic, but only the server should set this information. You should not set the value of this variable manually.

^[b]This option is dynamic, but only the server should set this information. You should not set the value of this variable manually.

Chapter 5 MySQL Server Administration_1

标签：5.7 9.4 sign gen enable this cer bin long

原文地址：http://www.cnblogs.com/djinmusic/p/7469987.html

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