check_nrpe misbehaving?

[schnitzel meister]

Hi, thanks for the reply.

On 4/22/05, Andreas Ericsson <ae at op5.se> wrote:
> schnitzel meister wrote:
> > Hello again,
> > Thanks for your previous help, maybe you can help me again?
> >
> > I'm having some trouble with check_mailq returning the wrong return
> > code - but only when running over check_nrpe.
> >
> 
> It's a permission issue in 99.9% of the cases.
> 
> > To find out why, I ran the plugin on both the mail server and the
> > nagios server from the command line.
> >
> > On the mail server, I have:
> >  while true; do
> >   /usr/lib/nagios/plugins/check_mailq -w 50 -c 100
> >   echo "Return: $?";
> >   sleep 5;
> >  done
> >
> 
> Are you running this as the user nrpe runs as?

Yes I am.

> Does it give different
> output when run as root vs the nrpe user?

No it doesn't.

> 
> > and on the nagios box I have:
> >  while true; do
> >   /usr/lib/nagios/plugins/check_nrpe -n -H ip.goes.here -c check_mailq1;
> >   echo "Return: $?";
> >   sleep 5;
> >  done
> >
> > The mail server ALWAYS returns an "OK: mailq empty message", return code 3.
> > check_nrpe on the nagios box also always returns an "OK: mailq empty
> > message", but 20% of the time has a return code of 0.
> >
> > Any ideas?
> >
> 
> Several.
> 
> 1/ Permissions (see above).
> 
> 2/ check_mailq seems broken, since it reports UNKNOWN but yet produces
> output which would lead one to think the mailqueue is empty (which it
> can't know if it returns UNKNOWN).

To check if the mailq command was confusing check_mailq, I ran the
following on the mail server:
while true; do mailq 1>/dev/null; echo "Return: $?"; sleep 1; done
mailq always returned 0.
Next I tried running mailq lots of time simulatenously. Still no
problem. Always the same return code.

> 
> 3/ You're running an MTA which check_mailq doesn't know how to check
> (links in to 2, since it's per definition broken for failing to report
> this).

Sendmail on Debian.

> 
> --
> Andreas Ericsson                   andreas.ericsson at op5.se
> OP5 AB                             www.op5.se
> Lead Developer
> 
> 

I don't get this problem with the other plugins, so I guess it's a
check_mailq bug.
How can I debug this?


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