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
   mysql5.6延迟复制