crontab -l查看任务

crontab -e便捷定时编辑任务

当我们编辑完定时任务过后，记得重载一遍crond

systemctl reload crond.service

启动、停止、重启服务↓

systemctl start crond.service

systemctl stop crond.service

systemctl restart crond.service

为了方便我们可以把crontab设置成开机自启 在 /etc/rc.d/rc.local 脚本中加入 systemctl start crond.service即可

查看定时任务

[root@localhost ~]# crontab -l

1 1 * * *  mysql  -uzabbix -pzabbix zabbix -e "CALL partition_maintenance_all('zabbix')"

每天22点1分执行mysql  -uzabbix -pzabbix zabbix -e "CALL partition_maintenance_all('zabbix')"命令

查看脚本执行情况

[root@localhost ~]# cat /var/log/cron

Apr 24 22:01:01 localhost CROND[11793]: (root) CMD (mysql  -uzabbix -pzabbix zabbix -e "CALL partition_maintenance_all('zabbix')")

Apr 24 22:01:01 localhost CROND[11794]: (root) CMD (run-parts /etc/cron.hourly)

Apr 24 22:01:01 localhost run-parts(/etc/cron.hourly)[11794]: starting 0anacron

Apr 24 22:01:01 localhost run-parts(/etc/cron.hourly)[11804]: finished 0anacron

Apr 24 22:01:01 localhost run-parts(/etc/cron.hourly)[11794]: starting 0yum-hourly.cron

Apr 24 22:01:01 localhost run-parts(/etc/cron.hourly)[11810]: finished 0yum-hourly.cron

Apr 24 22:17:20 localhost crontab[11873]: (root) LIST (root)