nrpe stopped working after upgrade

[Andy Shellam]

Hi Henrik

Is this the same when you run check_nrpe yourself manually?
I.e. from the console as the Nagios user, run check_nrpe -H linux -c 
check_home - do you get "No output ..."?

In NRPE's config file, are you using sudo as the command_prefix?
I had a lot of problems that took a while to figure out - sudo was 
requiring a console which nrpe doesn't have.  Removing the "defaults 
requiretty" from my /etc/sudoers file did the trick.

Andy.

Henrik Morsing wrote:
> Hi, a few months back I upgraded Debian from 3.0 to 3.1 on my server. I have since failed to get nrpe working again but (obviously) cannot figure out why.
>
> This is what I have installed:
>
> emil:/usr/lib/backup/nagios/plugins# dpkg -l | grep nagios
> ii  nagios-common  1.3-cvs.200504 A host/service/network monitoring and manage
> ii  nagios-nrpe-pl 2.0-7          Nagios Remote Plugin Exectutor Plugin
> ii  nagios-nrpe-se 2.0-7          Nagios Remote Plugin Exectutor Server
> ii  nagios-plugins 1.4-6          Plugins for the nagios network monitoring an
> ii  nagios-text    1.3-cvs.200504 A host/service/network monitoring and manage
>
>
> What I get it Nagios saying "(No output returned from plugin)". I have tried to replace the check_nrpe binary with a script that captures the arguments this is run with and correctly get "-H linux -c check_home" (example). So the executable is run. If I remove the file Nagios noticed as well so that's not the problem.
>
> If I let my shell script return a string like
>
> DISK OK - free space: /home 4767 MB (23%);| /home=15713MB;18431;19455;0;20479
>
> Nagios is immediately happy and turns green but on the other hand if I let my script call the original binary to get the exact same output string, Nagios again says "no output...". All this works fine when run manually...
>
> I'm baffled. Don't know where to look. Does anyone have an idea?
>
> Thanks
> Henrik Morsing
>
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