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  • mysql 主从搭建

    step 1:

    假设主服地址为192.168.1.1,从服为192.168.1.2

    主服启用binlog,并设置server-id

    [mysqld]
    log-bin=mysql-bin
    server-id=1

    step 2:

    主服创建同步账户并设置其权限:

    CREATE USER 'replication'@'192.168.1.2' IDENTIFIED BY 'password';
    GRANT REPLICATION SLAVE ON *.* TO 'replication'@'192.168.1.2';

    step 3:

    从服设置配置:

    [mysqld]
    server-id=2

    step 4:

    主服查看bin-log信息

    show master status;
    +------------------+----------+--------------+------------------+-------------------+
    | File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
    +------------------+----------+--------------+------------------+-------------------+
    | mysql-bin.000001 |       111|              |                  |                   |
    +------------------+----------+--------------+------------------+-------------------+
    1 row in set (0.00 sec)

    从服获取主服master的position 和 binlog文件,设置master

    CHANGE MASTER TO MASTER_HOST='192.168.1.1', MASTER_USER='replication', MASTER_PASSWORD='password', MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=111;

    step 5:

    启动从服slave:

    START SLAVE;

    查看slave状态:

    show slave statusG;
    *************************** 1. row ***************************
                   Slave_IO_State: Waiting for master to send event
                      Master_Host: 192.168.252.123
                      Master_User: replication
                      Master_Port: 3306
                    Connect_Retry: 60
                  Master_Log_File: mysql-bin.000001
              Read_Master_Log_Pos: 629
                   Relay_Log_File: master2-relay-bin.000003
                    Relay_Log_Pos: 320
            Relay_Master_Log_File: mysql-bin.000001
                 Slave_IO_Running: Yes
                Slave_SQL_Running: Yes
    ......

    检查主从复制通信状态

    Slave_IO_State #从站的当前状态 
    Slave_IO_Running: Yes #读取主程序二进制日志的I/O线程是否正在运行 
    Slave_SQL_Running: Yes #执行读取主服务器中二进制日志事件的SQL线程是否正在运行。与I/O线程一样 
    Seconds_Behind_Master #是否为0,0就是已经同步了

    参考:

    https://segmentfault.com/a/1190000010867488



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  • 原文地址:https://www.cnblogs.com/GO-NO-1/p/10395376.html
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