When you tried to stop Nagios to monitor some services from web interfaces – you see the message below:

Sorry, but Nagios is currently not checking for external commands, so your command will not be committed!

This is because we haven’t enable this feature in our configuration, it’s easy to fix.

Open your nagios config file , /etc/nagios3/nagios.cfg

Look for this line:


change it to


and reload nagios

You might receive this error:¬†Error: Could not stat() command file ‘/var/lib/nagios3/rw/nagios.cmd’!. ¬†The fix is