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  • mysql 简单主从

    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 statusG  #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
    

      

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  • 原文地址:https://www.cnblogs.com/37yan/p/6879372.html
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