MySQL主从复制异步半同步实例

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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