主服务器master

[root@localhost ~]# vim /etc/my.cnf[mysqld]log-bin=mysql-bin   #必须开启log-binserver-id=129       #服务器ID

　　

从服务器slave

[root@localhost ~]# vim /etc/my.cnf[mysqld]log-bin=mysql-bin   #开启log-bin（可选）server-id=129       #服务器ID[root@localhost ~]# systemctl restart mysqld  #主从服务器 mysql> GRANT REPLICATION SLAVE ON *.* to 'mysync'@'%' identified by '123456';  #主服务器授权账号mysql> show master status;+------------------+----------+--------------+------------------+-------------------+| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |+------------------+----------+--------------+------------------+-------------------+| mysql-bin.000001 |      439 |              |                  |                   |+------------------+----------+--------------+------------------+-------------------+1 row in set (0.00 sec)

　　

#查看master状态mysql> stop slave;mysql>change master to \master_host='192.168.100.129',master_user='mysync',master_password='123456', \master_log_file='mysql-bin.000004',master_log_pos=308;mysql> stop slave;mysql> show slave status\G  #查看slave状态   Slave_IO_Running: Yes  #必须为Yes   Slave_SQL_Running: Yes #必须为Yes如果在master 也配置 slave 架构就成了主主模式 需要注意数据一致性的问题

　　

虚拟机克隆需要重新生成auto.cnf

[root@localhost ~]# mv /var/lib/mysql/auto.cnf /tmp[root@localhost ~]# systemctl restart mysqld