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centos 5.4中mysql主从同步配置方法

Jun 07, 2016 pm 05:53 PM

本文章来分享一篇简单的关于在centos 5.4中mysql主从同步配置教程,有需要学习mysql同步配置的朋友可参考。

安装环境
•centos 5.4
•mysql 5.1.xx 采用rpm直接安装
•xtrabackup 1.2.22 采用rpm直接安装
1. Master:/etc/my.cnf

 代码如下 复制代码

[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'

设定了默认字符集为utf8,可以按实际情况取舍这段配置。

2. Slave:/etc/my.cnf

 代码如下 复制代码

[mysqld]
server-id=2
datadir=/var/lib/mysql

character-set-server=utf8
init_connect='SET NAMES utf8'3

.

Master:在master数据库设置用来同步的slave用户权限

 代码如下 复制代码
GRANT REPLICATION SLAVE ON *.*
TO ''@''
IDENTIFIED BY '';

4.

Master:导出数据到slave
采用xtrabackup来备份mysql,好处是在master的锁表时间很短,在实际的生产环境也可以使用,并且xtrabackup会自动记录同步日志文件的位置。

sudo innobackupex-1.5.1 --stream=tar /tmp/ | ssh "mkdir /tmp/db; tar xfi - -C /tmp/db/"这个步骤会把master的数据包括表结构整个导出并压缩复制给slave,同时解压到slave的/tmp/db目录下。

5. Slave:导入数据到slave

 代码如下 复制代码

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:开始同步数据

查看/var/lib/mysql/xtrabackup_binlog_info,获得日志文件以及position。

 代码如下 复制代码

CHANGE MASTER TO
MASTER_HOST='',
MASTER_USER='',
MASTER_PASSWORD='',
MASTER_LOG_FILE='',
MASTER_LOG_POS=;

START SLAVE;

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