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MySQL主从复制异步半同步实例

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Release: 2016-06-07 16:44:43
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MySQL主从复制异步半同步实例 建立mysql的复制 node1: mysqlgt; show master status;+------------------+----------+-------

MySQL主从复制异步半同步实例

  • 建立mysql的复制

    node1:

    mysql> show master status;
    +------------------+----------+--------------+------------------+-------------------+
    | File            | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
    +------------------+----------+--------------+------------------+-------------------+
    | mysql-bin.000003 |      120 |              |                  |                  |
    +------------------+----------+--------------+------------------+-------------------+
    1 row in set (0.00 sec)

    mysql>

     

    node2:

    mysql> change master to master_host='192.168.56.102',master_user='qwer',master_password='system',master_log_file='mysql-bin.000003',master_log_pos=120,master_port=3306;
    Query OK, 0 rows affected, 2 warnings (0.04 sec)

    mysql> start slave;
    Query OK, 0 rows affected (0.03 sec)

    mysql> show slave status\G
    *************************** 1. row ***************************
                  Slave_IO_State: Waiting for master to send event
                      Master_Host: 192.168.56.102
                      Master_User: qwer
                      Master_Port: 3306
                    Connect_Retry: 60
                  Master_Log_File: mysql-bin.000003
              Read_Master_Log_Pos: 120
                  Relay_Log_File: node2-relay-bin.000002
                    Relay_Log_Pos: 283
            Relay_Master_Log_File: mysql-bin.000003
                Slave_IO_Running: Yes
                Slave_SQL_Running: Yes
                Replicate_Do_DB: tongs

  • 2.加载插件

        node1:

         mysql> install plugin rpl_semi_sync_master soname 'semisync_master.so';           

        mysql> set global rpl_semi_sync_master_enabled=1;        --开启半同步
        mysql> set global rpl_semi_sync_master_timeout=1000;      --半同步1000毫秒

     

        node2:

         mysql> install plugin rpl_semi_sync_slave soname 'semisync_slave.so';
        mysql> set  global rpl_semi_sync_slave_enabled=1;

    3.查看状态

        node1: 

        mysql> show variables like '%rpl_%';
        +-------------------------------------------+------------+
        | Variable_name                            | Value      |
        +-------------------------------------------+------------+
        | rpl_semi_sync_master_enabled              | ON        |
        | rpl_semi_sync_master_timeout              | 1000      |
        | rpl_semi_sync_master_trace_level          | 32        |
        | rpl_semi_sync_master_wait_for_slave_count | 1          |
        | rpl_semi_sync_master_wait_no_slave        | ON        |
        | rpl_semi_sync_master_wait_point          | AFTER_SYNC |
        | rpl_stop_slave_timeout                    | 31536000  | 
          +-------------------------------------------+------------+
        7 rows in set (0.00 sec)

        mysql>

       

        node2:

        mysql> show variables like '%rpl_%';
        +---------------------------------+----------+
        | Variable_name                  | Value    |
        +---------------------------------+----------+
        | rpl_semi_sync_slave_enabled    | ON      |
        | rpl_semi_sync_slave_trace_level | 32      |
        | rpl_stop_slave_timeout          | 31536000 |
          +---------------------------------+----------+
        3 rows in set (0.00 sec)

        mysql>

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