mysql> show global 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)
(4) 启用半同步插件
mysql> set global rpl_semi_sync_master_enabled =1; Query OK, 0 rows affected (0.00 sec)mysql> show global 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)
(5) 重启同步进程
mysql> stop slave; Query OK, 0 rows affected (0.02 sec)mysql> start slave; Query OK, 0 rows affected (0.02 sec)mysql> show slave status G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.0.65 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: master-bin.000005 Read_Master_Log_Pos: 120 Relay_Log_File: testdb-relay-bin.000012 Relay_Log_Pos: 284 Relay_Master_Log_File: master-bin.000005 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: mysql.% Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 120 Relay_Log_Space: 622 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1 Master_UUID: c8bb22a1-024e-11e6-a1e8-000c29225fa0 Master_Info_File: /usr/local/mysql-5.6.29-linux-glibc2.5-x86_64/data/master.info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 1 row in set (0.00 sec)