mysql 5.7.10 下互为主备配置

B主机：my.ini,[mysqld]节点下添加如下信息

log-bin=mysql-bin 
server-id=180

添加如上配置后都需要重起两台主机的mysql服务。

2、创建Replication用户

A主机上执行如下命令：

grant replication client,replication slave on *.* to ‘repl‘@‘192.168.7.181‘ identified by ‘12345678‘

B主机上执行如下命令：

grant replication client,replication slave on *.* to ‘repl‘@‘192.168.7.180‘ identified by ‘12345678‘

3、查看两台主机的mysql bin log位置

首先将两台主机mysql中的表锁定

FLUSH TABLES WITH READ LOCK;

FLUSH TABLES WITH READ LOCK; 代表锁定表，禁止所有操作。防止bin log位置发生变化。

查看A主机bin log位置

SHOW MASTER STATUS;

A主机结果


查看B主机的bin log位置

SHOW MASTER STATUS;

B主机结果

记录下A主机结果，和B主机结果
然后再解除两台主机mysql table的锁定

Unlock Tables;

4、开始设置 Slave Replication

A主机执行如下命令：

STOP SLAVE;
CHANGE MASTER TO MASTER_HOST = ‘192.168.7.181‘, MASTER_USER = ‘repl‘, 
MASTER_PASSWORD = ‘12345678‘, MASTER_LOG_FILE = ‘mysql-bin.000001‘,
 MASTER_LOG_POS = 467; 
START SLAVE;

B主机执行如下命令：

STOP SLAVE;
CHANGE MASTER TO MASTER_HOST = ‘192.168.7.180‘, MASTER_USER = ‘repl‘, 
MASTER_PASSWORD = ‘12345678‘, MASTER_LOG_FILE = ‘mysql-bin.000001‘,
 MASTER_LOG_POS = 315; 
START SLAVE;

5、查看两台主机是否设置成功

Show Slave Status;

如果两台主机Slave_IO_Running 和Slave_SQL_Running都为YES代表设置成功。可以进行数据库操作了

mysql 5.7.10 下互为主备配置

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