主服务器master
[root@localhost ~]# vim /etc/my.cnf
[mysqld]
log-bin=mysql-bin #必须开启log-bin
server-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