Invalid linux cron timer task / var / spool / cron / xxx

Hello everyone, I am a duck:

  About Configuring the  / var / spool / cron / root after expression is invalid.

 vi /var/spool/cron/root

  The content root 

0 1/1 * * * ? sh /opt/web_app/sh/check_kibana.sh

Perform alone  check_kibana.sh is no problem. Should be a cron service did not start.

 

Reference article:

https://blog.csdn.net/yongcto/article/details/24889469

carried out:

chkconfig --level 35 crond on

If not then try to perform:

systemctl enable crond.service

Finally it. Cron expressions are used to think linux comes with the service, you do not need to manually start and stop, get up.