Return code of 127 is out of bounds - plugin may be missing

[StephMengMeng]

Hi,

I was setting up nrpe on a group of clients servers. Everything went well until I restart nagios3 on the monitor server. All the existing client servers work well in green but suddenly turned red with error 'Return code of 127 is out of bounds - plugin may be missing'. On the monitoring server, check load, user, ssh and total process are green, only check http is red with 127 error code. I checked the plug-in folder and didn't see missing plugin, '/usr/lib/nagios/plugins' and '/usr/local/nagios/libexec'. Would you please take a look?

Thanks!
Stephanie

[Box293]

What happens when you test the plugin from the Nagios server to the client when at the CLI?

Post that command here along with the full output.

[StephMengMeng]

Hi Box293, never mind, after I reinstalled the nagios-plug the error is gone. Thanks for the quick response!