MySQL 5.6 支持延迟复制，可以在Slave服务器指定一个延迟的值。默认值为0秒。使用MASTER_DELAY 选项为CHANGE MASTERTO 设置N秒延迟。

  1. 下面来实际演示,正常运行的从节点执行，设置延迟100秒 STOP SLAVE; CHANGE MASTER TO MASTER_DELAY = 100; START SLAVE; SHOW SLAVE STATUS\G; 显示 SQL_Delay: 100 --延迟 100S SQL_Remaining_Delay: NULL

  2. 设置取消延迟复制 STOP SLAVE ; CHANGE MASTER TO MASTER_DELAY=0; START SLAVE; SHOW SLAVE STATUS\G; SQL_Delay: 0 --取消延迟 SQL_Remaining_Delay: NULL

  3. 测试 主节点创建库 CREATE DATABASE TEST; 从节点查看 SHOW SLAVE STATUS\G; ....... SQL_Delay: 100 SQL_Remaining_Delay: 83 Slave_SQL_Running_State: Waiting until MASTER_DELAY seconds after master executed event .......

  4. 参考官网文档
    https://dev.mysql.com/doc/refman/5.6/en/replication-delayed.html https://www.linuxidc.com/Linux/2017-04/142714.htm mysql5.6延迟复制 http://francs3.blog.163.com/blog/static/405767272014111231645106/