MySQL高可用方案－PXC(Percona XtraDB Cluster)环境部署详解

1.同步复制，事务要么在所有节点提交或不提交。
2.多主复制，可以在任意节点进行写操作。
3.在从服务器上并行应用事件，真正意义上的并行复制。
4.节点自动配置。
5.数据一致性，不再是异步复制。

# yum localinstall -y percona-xtrabackup-24-2.4.7-1.el6.x86_64.rpm

# yum localinstall Percona-XtraDB-Cluster-*.rpm

# groupadd mysql 
# useradd -r -g mysql -s /bin/false mysql

# mkdir /data/mysql/{data,logs,tmp} -p
# chown -R mysql.mysql /data

# cp /etc/percona-xtradb-cluster.conf.d/wsrep.cnf /etc/my.cnf

[mysqld]
user=mysql
innodb_buffer_pool_size = 1024M
datadir = /data/mysql/data
port = 3306
server_id = 12
socket = /data/mysql/mysql.sock
pid-file = /data/mysql/logs/mysql.pid
log-error = /data/mysql/logs/error.log
log_warnings = 2
slow_query_log_file = /data/mysql/logs/slow.log
long_query_time = 0.1

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

# Path to Galera library
wsrep_provider=/usr/lib64/galera3/libgalera_smm.so

# Cluster connection URL contains IPs of nodes
#If no IP is found, this implies that a new cluster needs to be created,
#in order to do that you need to bootstrap this node
wsrep_cluster_address=gcomm://192.168.3.12,192.168.3.13,192.168.3.198

# In order for Galera to work correctly binlog format should be ROW
binlog_format=ROW

# MyISAM storage engine has only experimental support
default_storage_engine=InnoDB

# Slave thread to use
wsrep_slave_threads= 8

wsrep_log_conflicts

# This changes how InnoDB autoincrement locks are managed and is a requirement for Galera
innodb_autoinc_lock_mode=2

# Node IP address
wsrep_node_address=192.168.3.12
# Cluster name
wsrep_cluster_name=my-pxc-cluster

#If wsrep_node_name is not specified, then system hostname will be used
wsrep_node_name=pxc01

#pxc_strict_mode allowed values: DISABLED,PERMISSIVE,ENFORCING,MASTER
pxc_strict_mode=ENFORCING

# SST method
wsrep_sst_method=xtrabackup-v2

#Authentication for SST method
wsrep_sst_auth="sstuser:sstuser"

[mysqld]
user=mysql
innodb_buffer_pool_size = 1024M
datadir = /data/mysql/data
port = 3306
server_id = 13
socket = /data/mysql/mysql.sock
pid-file = /data/mysql/logs/mysql.pid
log-error = /data/mysql/logs/error.log
log_warnings = 2
slow_query_log_file = /data/mysql/logs/slow.log
long_query_time = 0.1

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

# Path to Galera library
wsrep_provider=/usr/lib64/galera3/libgalera_smm.so

# Cluster connection URL contains IPs of nodes
#If no IP is found, this implies that a new cluster needs to be created,
#in order to do that you need to bootstrap this node
wsrep_cluster_address=gcomm://192.168.3.12,192.168.3.13,192.168.3.198

# In order for Galera to work correctly binlog format should be ROW
binlog_format=ROW

# MyISAM storage engine has only experimental support
default_storage_engine=InnoDB

# Slave thread to use
wsrep_slave_threads= 8

wsrep_log_conflicts

# This changes how InnoDB autoincrement locks are managed and is a requirement for Galera
innodb_autoinc_lock_mode=2

# Node IP address
wsrep_node_address=192.168.3.13
# Cluster name
wsrep_cluster_name=my-pxc-cluster

#If wsrep_node_name is not specified, then system hostname will be used
wsrep_node_name=pxc02

#pxc_strict_mode allowed values: DISABLED,PERMISSIVE,ENFORCING,MASTER
pxc_strict_mode=ENFORCING

# SST method
wsrep_sst_method=xtrabackup-v2

#Authentication for SST method
wsrep_sst_auth="sstuser:sstuser"

[mysqld]
user=mysql
innodb_buffer_pool_size = 1024M
datadir = /data/mysql/data
port = 3306
server_id = 198
socket = /data/mysql/mysql.sock
pid-file = /data/mysql/logs/mysql.pid
log-error = /data/mysql/logs/error.log
log_warnings = 2
slow_query_log_file = /data/mysql/logs/slow.log
long_query_time = 0.1

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

# Path to Galera library
wsrep_provider=/usr/lib64/galera3/libgalera_smm.so

# Cluster connection URL contains IPs of nodes
#If no IP is found, this implies that a new cluster needs to be created,
#in order to do that you need to bootstrap this node
wsrep_cluster_address=gcomm://192.168.3.12,192.168.3.13,192.168.3.198

# In order for Galera to work correctly binlog format should be ROW
binlog_format=ROW

# MyISAM storage engine has only experimental support
default_storage_engine=InnoDB

# Slave thread to use
wsrep_slave_threads= 8

wsrep_log_conflicts

# This changes how InnoDB autoincrement locks are managed and is a requirement for Galera
innodb_autoinc_lock_mode=2

# Node IP address
wsrep_node_address=192.168.3.198
# Cluster name
wsrep_cluster_name=my-pxc-cluster

#If wsrep_node_name is not specified, then system hostname will be used
wsrep_node_name=pxc03

#pxc_strict_mode allowed values: DISABLED,PERMISSIVE,ENFORCING,MASTER
pxc_strict_mode=ENFORCING

# SST method
wsrep_sst_method=xtrabackup-v2

#Authentication for SST method
wsrep_sst_auth="sstuser:sstuser

[root@master ~]# /etc/init.d/mysql bootstrap-pxc
Bootstrapping PXC (Percona XtraDB Cluster)Initializing MySQ[ OK ]se: 
Starting MySQL (Percona XtraDB Cluster)....................[ OK ]

[root@master ~]# ps -ef|grep mysql
root 27910 1 0 10:21 pts/2 00:00:00 /bin/sh /usr/bin/mysqld_safe --datadir=/data/mysql/data --pid-file=/data/mysql/logs/mysql.pid --wsrep-new-cluster
mysql 28347 27910 22 10:21 pts/2 00:00:23 /usr/sbin/mysqld --basedir=/usr --datadir=/data/mysql/data --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --wsrep-provider=/usr/lib64/galera3/libgalera_smm.so --wsrep-new-cluster --log-error=/data/mysql/logs/error.log --pid-file=/data/mysql/logs/mysql.pid --socket=/data/mysql/mysql.sock --port=3306 --wsrep_start_position=00000000-0000-0000-0000-000000000000:-1

[root@master mysql]# tail -f logs/error.log

2017-06-07T02:21:30.794514Z 0 [Note] WSREP: Node 04b5f0f9 state primary
2017-06-07T02:21:30.794674Z 0 [Note] WSREP: Current view of cluster as seen by this node
view (view_id(PRIM,04b5f0f9,1)
memb {
04b5f0f9,0
}
joined {
}
left {
}
partitioned {
}
)
2017-06-07T02:21:30.794745Z 0 [Note] WSREP: Save the discovered primary-component to disk
2017-06-07T02:21:30.794882Z 0 [Note] WSREP: discarding pending addr without UUID: tcp://192.168.3.12:4567
2017-06-07T02:21:30.794926Z 0 [Note] WSREP: discarding pending addr proto entry 0x7f16aefcfcc0
2017-06-07T02:21:30.794988Z 0 [Note] WSREP: discarding pending addr without UUID: tcp://192.168.3.13:4567
2017-06-07T02:21:30.795028Z 0 [Note] WSREP: discarding pending addr proto entry 0x7f16aefcff00
2017-06-07T02:21:30.795060Z 0 [Note] WSREP: discarding pending addr without UUID: tcp://192.168.3.198:4567
2017-06-07T02:21:30.795098Z 0 [Note] WSREP: discarding pending addr proto entry 0x7f16aefcffc0
2017-06-07T02:21:30.795158Z 0 [Note] WSREP: gcomm: connected
2017-06-07T02:21:30.795328Z 0 [Note] WSREP: Shifting CLOSED -> OPEN (TO: 0)
2017-06-07T02:21:30.797700Z 0 [Note] WSREP: Waiting for SST/IST to complete.
2017-06-07T02:21:31.391420Z 0 [Note] WSREP: New COMPONENT: primary = yes, bootstrap = no, my_idx = 0, memb_num = 1
2017-06-07T02:21:32.020639Z 0 [Note] WSREP: Starting new group from scratch: 05719dfe-4b28-11e7-a651-ab4ab48f9b60
2017-06-07T02:21:32.021473Z 0 [Note] WSREP: STATE_EXCHANGE: sent state UUID: 0571c6e9-4b28-11e7-b20d-5a8bf004e006
2017-06-07T02:21:32.021523Z 0 [Note] WSREP: STATE EXCHANGE: sent state msg: 0571c6e9-4b28-11e7-b20d-5a8bf004e006
2017-06-07T02:21:32.021547Z 0 [Note] WSREP: STATE EXCHANGE: got state msg: 0571c6e9-4b28-11e7-b20d-5a8bf004e006 from 0 (pxc01)
2017-06-07T02:21:32.021571Z 0 [Note] WSREP: Quorum results:
version = 4,
component = PRIMARY,
conf_id = 0,
members = 1/1 (primary/total),
act_id = 0,
last_appl. = -1,
protocols = 0/7/3 (gcs/repl/appl),
group UUID = 05719dfe-4b28-11e7-a651-ab4ab48f9b60
2017-06-07T02:21:32.021599Z 0 [Note] WSREP: Flow-control interval: [100, 100]
2017-06-07T02:21:32.021615Z 0 [Note] WSREP: Restored state OPEN -> JOINED (0)
2017-06-07T02:21:32.021976Z 0 [Note] WSREP: Member 0.0 (pxc01) synced with group.
2017-06-07T02:21:32.022019Z 0 [Note] WSREP: Shifting JOINED -> SYNCED (TO: 0)
2017-06-07T02:21:32.022101Z 2 [Note] WSREP: New cluster view: global state: 05719dfe-4b28-11e7-a651-ab4ab48f9b60:0, view# 1: Primary, number of nodes: 1, my index: 0, protocol version 3
2017-06-07T02:21:32.023374Z 0 [Note] WSREP: SST complete, seqno: 0
2017-06-07T02:21:32.535748Z 0 [Note] InnoDB: PUNCH HOLE support available
2017-06-07T02:21:32.535815Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2017-06-07T02:21:32.535826Z 0 [Note] InnoDB: Uses event mutexes
2017-06-07T02:21:32.535832Z 0 [Note] InnoDB: GCC builtin __sync_synchronize() is used for memory barrier
2017-06-07T02:21:32.535837Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.3
2017-06-07T02:21:32.535842Z 0 [Note] InnoDB: Using Linux native AIO
2017-06-07T02:21:32.536865Z 0 [Note] InnoDB: Number of pools: 1
2017-06-07T02:21:32.536999Z 0 [Note] InnoDB: Using CPU crc32 instructions
2017-06-07T02:21:33.194918Z 0 [Note] InnoDB: Initializing buffer pool, total size = 1G, instances = 8, chunk size = 128M
2017-06-07T02:21:41.225447Z 0 [Note] InnoDB: Completed initialization of buffer pool
2017-06-07T02:21:45.228192Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2017-06-07T02:21:45.554968Z 0 [Note] InnoDB: Crash recovery did not find the parallel doublewrite buffer at /data/mysql/data/xb_doublewrite
2017-06-07T02:21:45.556158Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2017-06-07T02:21:47.397187Z 0 [Note] InnoDB: Created parallel doublewrite buffer at /data/mysql/data/xb_doublewrite, size 31457280 bytes
2017-06-07T02:21:47.700377Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2017-06-07T02:21:47.700541Z 0 [Note] InnoDB: Setting file ‘./ibtmp1‘ size to 12 MB. Physically writing the file full; Please wait ...
2017-06-07T02:21:48.413452Z 0 [Note] InnoDB: File ‘./ibtmp1‘ size is now 12 MB.
2017-06-07T02:21:48.414626Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
2017-06-07T02:21:48.414664Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
2017-06-07T02:21:48.416853Z 0 [Note] InnoDB: Waiting for purge to start
2017-06-07T02:21:48.468115Z 0 [Note] InnoDB: Percona XtraDB (http://www.percona.com) 5.7.18-15 started; log sequence number 2542677
2017-06-07T02:21:48.468456Z 0 [Note] Plugin ‘FEDERATED‘ is disabled.
2017-06-07T02:21:48.468710Z 0 [Note] InnoDB: Loading buffer pool(s) from /data/mysql/data/ib_buffer_pool
2017-06-07T02:21:48.472685Z 0 [Note] InnoDB: Buffer pool(s) load completed at 170607 10:21:48
2017-06-07T02:21:48.477798Z 0 [Note] Found ca.pem, server-cert.pem and server-key.pem in data directory. Trying to enable SSL support using them.
2017-06-07T02:21:48.477886Z 0 [Note] Skipping generation of SSL certificates as certificate files are present in data directory.
2017-06-07T02:21:48.515627Z 0 [Warning] CA certificate ca.pem is self signed.
2017-06-07T02:21:48.544887Z 0 [Note] Skipping generation of RSA key pair as key files are present in data directory.
2017-06-07T02:21:48.545210Z 0 [Note] Server hostname (bind-address): ‘*‘; port: 3306
2017-06-07T02:21:48.545499Z 0 [Note] IPv6 is available.
2017-06-07T02:21:48.545557Z 0 [Note] - ‘::‘ resolves to ‘::‘;
2017-06-07T02:21:48.545717Z 0 [Note] Server socket created on IP: ‘::‘.
2017-06-07T02:21:48.611502Z 0 [Note] Event Scheduler: Loaded 0 events
2017-06-07T02:21:48.651338Z 2 [Note] WSREP: Initialized wsrep sidno 2
2017-06-07T02:21:48.651403Z 2 [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification.
2017-06-07T02:21:48.651443Z 2 [Note] WSREP: REPL Protocols: 7 (3, 2)
2017-06-07T02:21:48.651455Z 2 [Note] WSREP: Assign initial position for certification: 0, protocol version: 3
2017-06-07T02:21:48.651862Z 0 [Note] WSREP: Service thread queue flushed.
2017-06-07T02:21:48.765979Z 0 [Note] /usr/sbin/mysqld: ready for connections.
Version: ‘5.7.18-15-57‘ socket: ‘/data/mysql/mysql.sock‘ port: 3306 Percona XtraDB Cluster (GPL), Release rel15, Revision 7693d6e, WSREP version 29.20, wsrep_29.20
2017-06-07T02:21:48.766032Z 0 [Note] Executing ‘SELECT * FROM INFORMATION_SCHEMA.TABLES;‘ to get a list of tables using the deprecated partition engine. You may use the startup option ‘--disable-partition-engine-check‘ to skip this check. 
2017-06-07T02:21:48.766043Z 0 [Note] Beginning of list of non-natively partitioned tables
2017-06-07T02:21:48.766034Z 2 [Note] WSREP: GCache history reset: old(00000000-0000-0000-0000-000000000000:0) -> new(05719dfe-4b28-11e7-a651-ab4ab48f9b60:0)
2017-06-07T02:21:48.767985Z 2 [Note] WSREP: Synchronized with group, ready for connections
2017-06-07T02:21:48.768012Z 2 [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification.
2017-06-07T02:21:48.824186Z 0 [Note] End of list of non-natively partitioned tables

# mysql -S /data/mysql/mysql.sock -uroot -peu1-!5WyRw<7
mysql> alter user ‘root‘@‘localhost‘ identified by ‘123456‘;

mysql> show status like ‘%wsrep%‘;
+----------------------------------+--------------------------------------+
| Variable_name | Value |
+----------------------------------+--------------------------------------+
| wsrep_local_state_uuid | 05719dfe-4b28-11e7-a651-ab4ab48f9b60 |
| wsrep_protocol_version | 7 |
| wsrep_last_committed | 1 |
| wsrep_replicated | 1 |
| wsrep_replicated_bytes | 230 |
| wsrep_repl_keys | 1 |
| wsrep_repl_keys_bytes | 31 |
| wsrep_repl_data_bytes | 135 |
| wsrep_repl_other_bytes | 0 |
| wsrep_received | 2 |
| wsrep_received_bytes | 141 |
| wsrep_local_commits | 0 |
| wsrep_local_cert_failures | 0 |
| wsrep_local_replays | 0 |
| wsrep_local_send_queue | 0 |
| wsrep_local_send_queue_max | 1 |
| wsrep_local_send_queue_min | 0 |
| wsrep_local_send_queue_avg | 0.000000 |
| wsrep_local_recv_queue | 0 |
| wsrep_local_recv_queue_max | 1 |
| wsrep_local_recv_queue_min | 0 |
| wsrep_local_recv_queue_avg | 0.000000 |
| wsrep_local_cached_downto | 1 |
| wsrep_flow_control_paused_ns | 0 |
| wsrep_flow_control_paused | 0.000000 |
| wsrep_flow_control_sent | 0 |
| wsrep_flow_control_recv | 0 |
| wsrep_flow_control_interval | [ 100, 100 ] |
| wsrep_flow_control_interval_low | 100 |
| wsrep_flow_control_interval_high | 100 |
| wsrep_flow_control_status | OFF |
| wsrep_cert_deps_distance | 1.000000 |
| wsrep_apply_oooe | 0.000000 |
| wsrep_apply_oool | 0.000000 |
| wsrep_apply_window | 1.000000 |
| wsrep_commit_oooe | 0.000000 |
| wsrep_commit_oool | 0.000000 |
| wsrep_commit_window | 1.000000 |
| wsrep_local_state | 4 |
| wsrep_local_state_comment | Synced |
| wsrep_cert_index_size | 1 |
| wsrep_cert_bucket_count | 22 |
| wsrep_gcache_pool_size | 1590 |
| wsrep_causal_reads | 0 |
| wsrep_cert_interval | 0.000000 |
| wsrep_ist_receive_status | |
| wsrep_ist_receive_seqno_start | 0 |
| wsrep_ist_receive_seqno_current | 0 |
| wsrep_ist_receive_seqno_end | 0 |
| wsrep_incoming_addresses | 192.168.3.12:3306 |
| wsrep_desync_count | 0 |
| wsrep_evs_delayed | |
| wsrep_evs_evict_list | |
| wsrep_evs_repl_latency | 1.8541e-05/1.8541e-05/1.8541e-05/0/1 |
| wsrep_evs_state | OPERATIONAL |
| wsrep_gcomm_uuid | 04b5f0f9-4b28-11e7-aff6-522901b34a55 |
| wsrep_cluster_conf_id | 1 |
| wsrep_cluster_size | 1 |
| wsrep_cluster_state_uuid | 05719dfe-4b28-11e7-a651-ab4ab48f9b60 |
| wsrep_cluster_status | Primary |
| wsrep_connected | ON |
| wsrep_local_bf_aborts | 0 |
| wsrep_local_index | 0 |
| wsrep_provider_name | Galera |
| wsrep_provider_vendor | Codership Oy <info@codership.com> |
| wsrep_provider_version | 3.20(r7e383f7) |
| wsrep_ready | ON |
+----------------------------------+--------------------------------------+

mysql> create user ‘sstuser‘@‘localhost‘ identified by ‘sstuser‘;
mysql> grant reload,lock tables,replication client,process on *.* to ‘sstuser‘@‘localhost‘;
mysql> flush privileges;

[root@master ~]# mysql -usstuser -psstuser -S /data/mysql/mysql.sock -e ‘show databases‘
Warning: Using a password on the command line interface can be insecure.
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+

# mysql -usstuser -psstuser -S /data/mysql/mysql.sock -e ‘show status like "wsrep%"‘
Warning: Using a password on the command line interface can be insecure.
+----------------------------------+--------------------------------------+
| Variable_name | Value |
+----------------------------------+--------------------------------------+
| wsrep_local_state_uuid | 05719dfe-4b28-11e7-a651-ab4ab48f9b60 |
| wsrep_protocol_version | 7 |
| wsrep_last_committed | 4 |
| wsrep_replicated | 4 |
| wsrep_replicated_bytes | 950 |
| wsrep_repl_keys | 4 |
| wsrep_repl_keys_bytes | 124 |
| wsrep_repl_data_bytes | 570 |
| wsrep_repl_other_bytes | 0 |
| wsrep_received | 6 |
| wsrep_received_bytes | 423 |
| wsrep_local_commits | 0 |
| wsrep_local_cert_failures | 0 |
| wsrep_local_replays | 0 |
| wsrep_local_send_queue | 0 |
| wsrep_local_send_queue_max | 1 |
| wsrep_local_send_queue_min | 0 |
| wsrep_local_send_queue_avg | 0.000000 |
| wsrep_local_recv_queue | 0 |
| wsrep_local_recv_queue_max | 1 |
| wsrep_local_recv_queue_min | 0 |
| wsrep_local_recv_queue_avg | 0.000000 |
| wsrep_local_cached_downto | 1 |
| wsrep_flow_control_paused_ns | 0 |
| wsrep_flow_control_paused | 0.000000 |
| wsrep_flow_control_sent | 0 |
| wsrep_flow_control_recv | 0 |
| wsrep_flow_control_interval | [ 141, 141 ] |
| wsrep_flow_control_interval_low | 141 |
| wsrep_flow_control_interval_high | 141 |
| wsrep_flow_control_status | OFF |
| wsrep_cert_deps_distance | 1.000000 |
| wsrep_apply_oooe | 0.000000 |
| wsrep_apply_oool | 0.000000 |
| wsrep_apply_window | 1.000000 |
| wsrep_commit_oooe | 0.000000 |
| wsrep_commit_oool | 0.000000 |
| wsrep_commit_window | 1.000000 |
| wsrep_local_state | 4 |
| wsrep_local_state_comment | Synced |
| wsrep_cert_index_size | 1 |
| wsrep_cert_bucket_count | 22 |
| wsrep_gcache_pool_size | 2561 |
| wsrep_causal_reads | 0 |
| wsrep_cert_interval | 0.000000 |
| wsrep_ist_receive_status | |
| wsrep_ist_receive_seqno_start | 0 |
| wsrep_ist_receive_seqno_current | 0 |
| wsrep_ist_receive_seqno_end | 0 |
| wsrep_incoming_addresses | 192.168.3.12:3306,192.168.3.13:3306 |
| wsrep_desync_count | 0 |
| wsrep_evs_delayed | |
| wsrep_evs_evict_list | |
| wsrep_evs_repl_latency | 0/0/0/0/0 |
| wsrep_evs_state | OPERATIONAL |
| wsrep_gcomm_uuid | 04b5f0f9-4b28-11e7-aff6-522901b34a55 |
| wsrep_cluster_conf_id | 2 |
| wsrep_cluster_size | 2 |
| wsrep_cluster_state_uuid | 05719dfe-4b28-11e7-a651-ab4ab48f9b60 |
| wsrep_cluster_status | Primary |
| wsrep_connected | ON |
| wsrep_local_bf_aborts | 0 |
| wsrep_local_index | 0 |
| wsrep_provider_name | Galera |
| wsrep_provider_vendor | Codership Oy <info@codership.com> |
| wsrep_provider_version | 3.20(r7e383f7) |
| wsrep_ready | ON |
+----------------------------------+--------------------------------------+

[root@slave02 ~]# mysql -S /data/mysql/mysql.sock -usstuser -psstuser -e ‘show status like "wsrep%"‘;
Warning: Using a password on the command line interface can be insecure.
+----------------------------------+--------------------------------------------------------+
| Variable_name | Value |
+----------------------------------+--------------------------------------------------------+
| wsrep_local_state_uuid | 05719dfe-4b28-11e7-a651-ab4ab48f9b60 |
| wsrep_protocol_version | 7 |
| wsrep_last_committed | 4 |
| wsrep_replicated | 0 |
| wsrep_replicated_bytes | 0 |
| wsrep_repl_keys | 0 |
| wsrep_repl_keys_bytes | 0 |
| wsrep_repl_data_bytes | 0 |
| wsrep_repl_other_bytes | 0 |
| wsrep_received | 3 |
| wsrep_received_bytes | 288 |
| wsrep_local_commits | 0 |
| wsrep_local_cert_failures | 0 |
| wsrep_local_replays | 0 |
| wsrep_local_send_queue | 0 |
| wsrep_local_send_queue_max | 1 |
| wsrep_local_send_queue_min | 0 |
| wsrep_local_send_queue_avg | 0.000000 |
| wsrep_local_recv_queue | 0 |
| wsrep_local_recv_queue_max | 1 |
| wsrep_local_recv_queue_min | 0 |
| wsrep_local_recv_queue_avg | 0.000000 |
| wsrep_local_cached_downto | 0 |
| wsrep_flow_control_paused_ns | 0 |
| wsrep_flow_control_paused | 0.000000 |
| wsrep_flow_control_sent | 0 |
| wsrep_flow_control_recv | 0 |
| wsrep_flow_control_interval | [ 173, 173 ] |
| wsrep_flow_control_interval_low | 173 |
| wsrep_flow_control_interval_high | 173 |
| wsrep_flow_control_status | OFF |
| wsrep_cert_deps_distance | 0.000000 |
| wsrep_apply_oooe | 0.000000 |
| wsrep_apply_oool | 0.000000 |
| wsrep_apply_window | 0.000000 |
| wsrep_commit_oooe | 0.000000 |
| wsrep_commit_oool | 0.000000 |
| wsrep_commit_window | 0.000000 |
| wsrep_local_state | 4 |
| wsrep_local_state_comment | Synced |
| wsrep_cert_index_size | 0 |
| wsrep_cert_bucket_count | 22 |
| wsrep_gcache_pool_size | 1452 |
| wsrep_causal_reads | 0 |
| wsrep_cert_interval | 0.000000 |
| wsrep_ist_receive_status | |
| wsrep_ist_receive_seqno_start | 0 |
| wsrep_ist_receive_seqno_current | 0 |
| wsrep_ist_receive_seqno_end | 0 |
| wsrep_incoming_addresses | 192.168.3.12:3306,192.168.3.13:3306,192.168.3.198:3306 |
| wsrep_desync_count | 0 |
| wsrep_evs_delayed | |
| wsrep_evs_evict_list | |
| wsrep_evs_repl_latency | 0/0/0/0/0 |
| wsrep_evs_state | OPERATIONAL |
| wsrep_gcomm_uuid | ca7f9f30-4b2b-11e7-a0b7-e29969825862 |
| wsrep_cluster_conf_id | 3 |
| wsrep_cluster_size | 3 |
| wsrep_cluster_state_uuid | 05719dfe-4b28-11e7-a651-ab4ab48f9b60 |
| wsrep_cluster_status | Primary |
| wsrep_connected | ON |
| wsrep_local_bf_aborts | 0 |
| wsrep_local_index | 2 |
| wsrep_provider_name | Galera |
| wsrep_provider_vendor | Codership Oy <info@codership.com> |
| wsrep_provider_version | 3.20(r7e383f7) |
| wsrep_ready | ON |
+----------------------------------+--------------------------------------------------------+

mysql> create database tdoa charset=‘utf8mb4‘;
Query OK, 1 row affected (0.05 sec)

mysql> use tdoa;
Database changed
mysql> create table user(id int unsigned primary key auto_increment,name varchar(30));
Query OK, 0 rows affected (0.05 sec)

mysql> show tables;
+----------------+
| Tables_in_tdoa |
+----------------+
| user |
+----------------+
1 row in set (0.00 sec)

mysql> insert into user(name) values(‘jack‘),(‘tom‘),(‘lily‘),(‘lucy‘);
Query OK, 4 rows affected (0.07 sec)
Records: 4 Duplicates: 0 Warnings: 0

mysql> select * from user;
+----+------+
| id | name |
+----+------+
| 3 | jack |
| 6 | tom |
| 9 | lily |
| 12 | lucy |
+----+------+
4 rows in set (0.00 sec)

mysql> commit;
Query OK, 0 rows affected (0.00 sec)

mysql> select * from user;
+----+------+
| id | name |
+----+------+
| 3 | jack |
| 6 | tom |
| 9 | lily |
| 12 | lucy |
+----+------+
4 rows in set (0.01 sec)

[root@master ~]# mysql -S /data/mysql/mysql.sock -uroot -p123456 -e ‘use tdoa;show tables;select * from user;‘
Warning: Using a password on the command line interface can be insecure.
+----------------+
| Tables_in_tdoa |
+----------------+
| user |
+----------------+
+----+------+
| id | name |
+----+------+
| 3 | jack |
| 6 | tom |
| 9 | lily |
| 12 | lucy |


[root@slave01 ~]# mysql -S /data/mysql/mysql.sock -uroot -p123456 -e ‘use tdoa;show tables;select * from user;‘
Warning: Using a password on the command line interface can be insecure.
+----------------+
| Tables_in_tdoa |
+----------------+
| user |
+----------------+
+----+------+
| id | name |
+----+------+
| 3 | jack |
| 6 | tom |
| 9 | lily |
| 12 | lucy |
+----+------+