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How to configure cron with debug logging


Red Hat Enterprise Linux


How can cron be configured to run in debug mode for more detailed logging?


The crond daemon has an -x option to set the following debug flags:
crond -x [ext,sch,proc,pars,load,misc,test,bit]
ext print extended debugging information
sch scheduling
proc process control
pars parsing
load database loading
misc miscellaneous
test test mode - do not actually execute any commands
bit show how various bits are set (long)
Add the following line to the /etc/sysconfig/crond file to enable debugging:
CRONDARGS="-x ext,sch,proc,pars,load,misc,bit"
Restart the crond daemon:

Red Hat Enterprise Linux 6 $ sudo service crond restart
Red Hat Enterprise Linux 7 or later $ sudo systemctl restart crond

Additional log entries for cron will be in the /var/log/messages file.