Crontab does not run on CentOS 7

Question

I'm using CentOS 7, and installed "cronie"

yum install cronie

I have a shell to backup my home folder, shell's content (of course, backup.sh is 775)

#!/bin/bash
#START
TIME=`date +%Y-%m-%d_%Hh%M`          
FILENAME=backupHome_123.30.150.29_$TIME.tar.gz 
SRCDIR=/home                    
DESDIR=/backup            
tar -cpvzf $DESDIR/$FILENAME $SRCDIR
#END

And add to crontab -e

00 2 * * * /bin/bash /backup/backup.sh

But crontab does nothing. When I check log at /var/log/cron only, something like that and no more error or processing log

May  1 00:26:08 app crontab[12041]: (root) END EDIT (root)
May  1 00:33:21 app crontab[12086]: (root) BEGIN EDIT (root)
May  1 00:34:25 app crontab[12086]: (root) END EDIT (root)

Anyone can give me some advises to make crontab work? Thank you.

Answer 1

I found that the most useful information was actually given by

systemctl status crond

Which revealed that it failed to load correctly due to an "Unauthorized SELinux context" error.

Answer 2

This can happen if cron daemon isn't running. Check it with:

pgrep cron

If command returns nothing, run:

systemctl restart crond

This should help.