主从my.cnf

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# Example MySQL config file for very large systems.

# This is for a large system with memory of 1G-2G where the system runs mainly

# MySQL.

# You can copy this file to

# /etc/my.cnf to set global options,

# mysql-data-dir/my.cnf to set server-specific options (in this

# installation this directory is /usr/local/mysql/var) or

# ~/.my.cnf to set user-specific options.

# In this file, you can use all long options that a program supports.

# If you want to know which options a program supports, run the program

# with the "--help" option.

# The following options will be passed to all MySQL clients

[client]

#password = your_password

port = 3306

socket = /db/mysql/mysql.sock

# Here follows entries for some specific programs

# The MySQL server

[mysqld]

datadir = /db/mysql

port = 3306

socket = /db/mysql/mysql.sock

skip-locking

skip-name-resolv

key_buffer = 4096M

max_allowed_packet = 1M

table_cache = 4096

sort_buffer_size = 2M

read_buffer_size = 2M

read_rnd_buffer_size = 8M

myisam_sort_buffer_size = 64M

thread_cache_size = 8

query_cache_size = 32M

# Try number of CPU‘s*2 for thread_concurrency

thread_concurrency = 8

log-error = /db/mysql/mysql.log

long_query_time = 1

slow_query_log = log-queries-not-using-indexes

# Don‘t listen on a TCP/IP port at all. This can be a security enhancement,

# if all processes that need to connect to mysqld run on the same host.

# All interaction with mysqld must be made via Unix sockets or named pipes.

# Note that using this option without enabling named pipes on Windows

# (via the "enable-named-pipe" option) will render mysqld useless!

#skip-networking

# Disable Federated by default

#skip-federated

# Replication Master Server (default)

# binary logging is required for replication

log-bin = /db/mysql/mysql-bin

expire_logs_day = 1

# required unique id between 1 and 2^32 - 1

# defaults to 1 if master-host is not set

# but will not function as a master if omitted

server-id = 1

binlog-do-db = IMIDB

binlog-do-db = CHAELDB

binlog-ignore-db = mysql

# Replication Slave (comment out master section to use this)

# To configure this host as a replication slave, you can choose between

# two methods :

# 1) Use the CHANGE MASTER TO command (fully described in our manual) -

# the syntax is:

# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,

# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;

# where you replace <host>, <user>, <password> by quoted strings and

# <port> by the master‘s port number (3306 by default).

# Example:

# CHANGE MASTER TO MASTER_HOST=‘125.564.12.1‘, MASTER_PORT=3306,

# MASTER_USER=‘joe‘, MASTER_PASSWORD=‘secret‘;

# OR

# 2) Set the variables below. However, in case you choose this method, then

# start replication for the first time (even unsuccessfully, for example

# if you mistyped the password in master-password and the slave fails to

# connect), the slave will create a master.info file, and any later

# change in this file to the variables‘ values below will be ignored and

# overridden by the content of the master.info file, unless you shutdown

# the slave server, delete master.info and restart the slaver server.

# For that reason, you may want to leave the lines below untouched

# (commented) and instead use CHANGE MASTER TO (see above)

# required unique id between 2 and 2^32 - 1

# (and different from the master)

# defaults to 2 if master-host is set

# but will not function as a slave if omitted

#server-id = 2

# The replication master for this slave - required

#master-host = <hostname>

# The username the slave will use for authentication when connecting

# to the master - required

#master-user = <username>

# The password the slave will authenticate with when connecting to

# the master - required

#master-password = <password>

# The port the master is listening on.

# optional - defaults to 3306

#master-port = <port>

# binary logging - not required for slaves, but recommended

#log-bin=mysql-bin

# binary logging format - mixed recommended

#binlog_format=mixed

# Point the following paths to different dedicated disks

#tmpdir = /tmp/

#log-update = /path-to-dedicated-directory/hostname

# Uncomment the following if you are using InnoDB tables

innodb_data_home_dir = /db/mysql

innodb_data_file_path = ibdata1:2000M;ibdata2:10M:autoextend

innodb_log_group_home_dir = /db/mysql

# You can set .._buffer_pool_size up to 50 - 80 %

# of RAM but beware of setting memory usage too high

innodb_buffer_pool_size = 4G

innodb_additional_mem_pool_size = 20M

# Set .._log_file_size to 25 % of buffer pool size

innodb_log_file_size = 32M

innodb_log_buffer_size = 48M

innodb_flush_log_at_trx_commit = 2

innodb_lock_wait_timeout = 50

innodb_force_recovery = 0

innodb_file_per_table = 1

innodb_log_files_in_group = 3

[mysqldump]

quick

max_allowed_packet = 16M

[mysql]

no-auto-rehash

# Remove the next comment character if you are not familiar with SQL

#safe-updates

[isamchk]

key_buffer = 256M

sort_buffer_size = 256M

read_buffer = 2M

write_buffer = 2M

[myisamchk]

key_buffer = 256M

sort_buffer_size = 256M

read_buffer = 2M

write_buffer = 2M

[mysqlhotcopy]

interactive-timeout

===========================================================================================

从

# Example MySQL config file for very large systems.

# This is for a large system with memory of 1G-2G where the system runs mainly

# MySQL.

# You can copy this file to

# /etc/my.cnf to set global options,

# mysql-data-dir/my.cnf to set server-specific options (in this

# installation this directory is /usr/local/mysql/var) or

# ~/.my.cnf to set user-specific options.

# In this file, you can use all long options that a program supports.

# If you want to know which options a program supports, run the program

# with the "--help" option.

# The following options will be passed to all MySQL clients

[client]

#password = your_password

port = 3306

socket = /db/mysql/mysql.sock

# Here follows entries for some specific programs

# The MySQL server

[mysqld]

datadir = /db/mysql

port = 3306

socket = /db/mysql/mysql.sock

skip-locking

skip-name-resolv

key_buffer = 4096M

max_allowed_packet = 1M

table_cache = 4096

sort_buffer_size = 2M

read_buffer_size = 2M

read_rnd_buffer_size = 8M

myisam_sort_buffer_size = 64M

thread_cache_size = 8

query_cache_size = 32M

# Try number of CPU‘s*2 for thread_concurrency

thread_concurrency = 8

log-error = /db/mysql/mysql.log

long_query_time = 1

slow_query_log = log-queries-not-using-indexes

# Don‘t listen on a TCP/IP port at all. This can be a security enhancement,

# if all processes that need to connect to mysqld run on the same host.

# All interaction with mysqld must be made via Unix sockets or named pipes.

# Note that using this option without enabling named pipes on Windows

# (via the "enable-named-pipe" option) will render mysqld useless!

#skip-networking

# Disable Federated by default

#skip-federated

# Replication Master Server (default)

# binary logging is required for replication

log-bin = /db/mysql/mysql-bin

expire_logs_days = 3

# required unique id between 1 and 2^32 - 1

# defaults to 1 if master-host is not set

# but will not function as a master if omitted

server-id = 2

replicate-do-db = IMIDB

replicate-do-db = CHAELDB

replicate-ignore-db = mysql