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mysql双主复制总结

 

双主复制:


  1)、在两台服务器上各自建立一个具有复制权限的用户;
  2)、修改配置文件:
  # 主服务器A上
    [mysqld]
    server-id = 10
    log-bin = mysql-bin
    relay-log = relay-mysql
    auto-increment-offset = 1 # 起始值
    auto-increment-increment = 2 # 步长


  # 主服务器B上
    [mysqld]
    server-id = 20
    log-bin = mysql-bin
    relay-log = relay-mysql
    auto-increment-increment = 2
    auto-increment-offset = 2

 

  3)、如果此时两台服务器均为新建立,且无其它写入操作,各服务器只需记录当前自己二进制日志文件及事件位置,以之作为另外的服务器复制起始位置即可

    serverA|mysql> SHOW MASTER STATUS\G
    ************************** 1. row ***************************
    File: mysql-bin.000001
    Position: 710
    Binlog_Do_DB:
    Binlog_Ignore_DB:
    1 row in set (0.00 sec)

    server2|mysql> SHOW MASTER STATUS\G
    mysql> SHOW MASTER STATUS\G
    *************************** 1. row ***************************
    File: mysql-bin.000002
    Position: 810
    Binlog_Do_DB:
    Binlog_Ignore_DB:
    1 row in set (0.00 sec)

 


  4)各服务器接下来指定对另一台服务器为自己的主服务器:
    serverA|mysql> CHANGE MASTER TO MASTER TO MASTER_HOST=‘10.10.10.72‘,MASTER_USER=‘replpuser‘, MASTER_PASSWORD=‘replpass‘, MASTER_LOG_FILE=‘mysql-bin.000002‘, MASTER_LOG_POS=810

    serverB|mysql> CHANGE MASTER TO MASTER TO MASTER_HOST=‘10.10.10.71‘,MASTER_USER=‘replpuser‘, MASTER_PASSWORD=‘replpass‘, MASTER_LOG_FILE=‘mysql-bin.000001‘, MASTER_LOG_POS=710

 

mysql双主复制总结