mysql主从复制+事件+shell定时脚本

master

log-bin=mysql-bin
server-id=1
systemctl restart  mysqld.service

slave

server-id=2
systemctl restart  mysqld.service

创建授权用户

grant replication slave, replication client on *.* to 'slave'@'10.0.5.78' identified by 'KX_ss3_DB@httcsec';
flush privileges;

查看position号

show master status;

登陆从库，添加相关参数

change master to master_host='10.0.5.78', master_user='slave', master_password='KX_ss3_DB@httcsec', master_port=3306, master_log_file='mysql-bin.000005', master_log_pos=2217, master_connect_retry=30;

查看主从同步状态

show slave status\G;

定时删除过期数据

mysql是否开启了事件功能

show variables like '%sc%';

临时开启事件功能

SET GLOBAL event_scheduler = ON; SET GLOBAL event_scheduler = 1; — 0代表关闭

永久开启

event_scheduler=ON

创建事件

每5s定时删除定时删除表中过期两分钟的数据

create event sys_delete_sysdept on schedule every 10 second do delete from sys_dept where timestamp < (CURRENT_TIMESTAMP() + INTERVAL -2 MINUTE);

修改事件

ALTER EVENT sys_delete_sysdept
on SCHEDULE EVERY 10 SECOND
DO
   delete from sys_dept where sys_dept.money < 1000;

开启事件

alter event sys_delete_sysdept on completion preserve enable;

关闭事件

alter event sys_delete_sysdept on completion preserve disabled;

定期删除日志文件

添加定时任务

crontab -e

每天12点，13点执行删除日志文件记录

0 12,13 * * * /shell/delete_schedule.sh