Nagios Plugin

I’ve deployed Nagios plugin, I’ve added fping service, when I run ./check-services.php manualy
the fping change the colour from blue to green and it run for 20 seconds
Then it stops, looks like the cron isn’t running even-though I set in the cron the following:
*/1 * * * * librenms /opt/librenms/check-services.php >> /dev/null 2>&1

Closing doubled post - Please don’t double post the same problem.