The most convient way is to login via SSH to your server and check it in console.
For Centos 7+ (RHEL) we will need to use the following command:
$ systemctl status crond.service
It will find out if the crond is running or not.
As a result it gives the following sample output:
[root@tookassa ~]# systemctl status crond.service
* crond.service - Command Scheduler
Loaded: loaded (/usr/lib/systemd/system/crond.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2016-06-03 06:45:02 EDT; 6 months 12 days ago
Main PID: 158 (crond)
CGroup: /system.slice/crond.service
`-158 /usr/sbin/crond -n
Dec 09 11:33:01 tookassa crond[158]: (kassa.ee) RELOAD (/var/spool/cr...u)
Dec 09 11:38:01 tookassa crond[158]: (kassa.ee) RELOAD (/var/spool/cr...u)
Hint: Some lines were ellipsized, use -l to show in full.
If it not running, you may configure the crond service to start automatically on boot:
$ sudo systemctl enable crond.service $ sudo systemctl start crond.service