MySQL 5.7延遲複製是通過設置複製參數MASTER_DELAY實現(單位爲秒,就是從庫延遲多少秒後執行這條SQL)
例如:
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.10.1.101
.....
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
......
Seconds_Behind_Master: 0
.....
SQL_Delay: 0
SQL_Remaining_Delay: 0
......
Channel_Name: master
Master_TLS_Version:
1 row in set (0.00 sec)
配置複製master延遲14400秒
mysql> stop slave;
Query OK, 0 rows affected (0.00 sec)
mysql> CHANGE MASTER TO MASTER_DELAY=14400 for channel 'master';
Query OK, 0 rows affected (0.01 sec)`1q
mysql> start slave;
Query OK, 0 rows affected (0.01 sec)
查看結果
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Opening tables
Master_Host: 10.10.1.101
.....
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
.....
Seconds_Behind_Master: 12
.......
SQL_Delay: 14400
SQL_Remaining_Delay: 12
........
Channel_Name: master
Master_TLS_Version:
1 row in set (0.00 sec)