Mysql master-slave replication settings in centos _ MySQL

Detailed description of mysql master-slave replication settings in centos

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Installation environment: centos 5.4

Mysql version: mysql 5.1.xx is directly installed using rpm

Required software: xtrabackup 1.2.22 directly installed with rpm

1. Master:/etc/my. cnf


[Mysqld]
Server-id = 1
Log-bin innodb_flush_log_at_trx_commit = 1
Sync_binlog = 1
Datadir =/var/lib/mysql
Character-set-server = utf8
Init_connect = 'set NAMES utf8'

If the default character set is set to utf8, you can choose this configuration as needed.

2. Slave:/etc/my. cnf


[Mysqld]
Server-id = 2
Datadir =/var/lib/mysql
Character-set-server = utf8
Init_connect = 'set NAMES utf8'

3. Master: Set the slave user permissions for synchronization in the master database.

Grant replication slave on *. *' '@' 'Identified' ';

4. Master: export data to slave

Xtrabackup is used to back up mysql. the advantage is that the lock table time on the master node is very short and can be used in the actual production environment. xtrabackup automatically records the location of the synchronization log file.

Sudo innobackupex-1.5.1 -- stream = tar/tmp/| ssh "Mkdir/tmp/db; tar xfi--C/tmp/db /"

In this step, the master data, including the entire table structure, is exported, compressed, copied to slave, and decompressed to the/tmp/db directory of slave.

5. Slave: import data to slave

Innobackupex-1.5.1 -- apply-log/tmp/db innobackupex-1.5.1 -- copy-back/tmp/db chown-R mysql. mysql/var/lib/mysql /*

6. Slave: start data synchronization
View/var/lib/mysql/xtrabackup_binlog_info to obtain the log file and position.

Change master to MASTER_HOST =' ', MASTER_USER =' ', MASTER_PASSWORD =' ', MASTER_LOG_FILE =' ', MASTER_LOG_POS = ; Start slave;

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