mysql 怎么看主备_Mysql 主备配置

1. 了解主备配置过程原理。

2. 修改配置文件

主：[mysqld]

log_bin=mysql-bin

server_id =1

备：[mysqld]

log_bin=mysql-bin

server_id =2

relay_log=mysql-relay-bin

log_slave_updates=1

read_only=1

3. 新建授权用户GRANT  REPLICATION SLAVE,REPLICATION CLIENT on *.* to slaveuser@'192.168.15.%' IDENTIFIED BY 'HU@jiang';

GRANT  REPLICATION SLAVE,REPLICATION CLIENT on *.* to slaveuser@'localhost' IDENTIFIED BY 'HU@jiang';

4. 启用slave数据库CHANGE MASTER TO

MASTER_HOST='192.168.15.31',

MASTER_USER='slaveuser',

MASTER_PASSWORD='HU@jiang',

MASTER_LOG_FILE='mysql-bin.000003',     # 通过 show master status\G; 确认MASTER_LOG_FILE 值

MASTER_LOG_POS=0;                              #日志从哪里开始读start slave;    >