[Nagiosplug-help] SOLVED: check_mailq and check_nrpe = cannot read input

[Erik M Cummings]

Erik Cummings <ecummings at ...> writes:

> 
> I have searched and found nothing to help with this, although I've seen 
several others with the
> same/similar issues.
> 
> When running check_mailq locally I get good output/success.
> 
> When running check_mailq via check_nrpe I am having NO luck - "Unable to 
read output"
> 
> I have made a sudo entry to allow nagios user to run check_mailq without a 
password.
> 
> This command from the local host works:
> /usr/bin/sudo /usr/lib64/nagios/plugins/check_mailq -w 10 -c 20
> 
> This command via NRPE does NOT
> /usr/lib64/nagios/plugins/check_nrpe -H XXXXX -c check_mailq -a 10 20
> 
> NRPE.cfg excerpt:
> command[check_mailq]=/usr/bin/sudo /usr/lib64/nagios/plugins/check_mailq -w 
$ARG1$ -c $ARG2$ 
> 
> sudoers entry (via visudo):
> nagios ALL = NOPASSWD: /usr/lib64/nagios/plugins/
> 	(and yes...once I figure this out I'll restrict that a little more!)
> 
> Only "Unable to read output".
> 
> All other commands work fine via NRPE.  
> 
> CentOS 5 (Red Hat EL5), 64bit AMD
> 
> nagios.x86_64                            2.9-1.el5.rf           
installed       
> nagios-nrpe.x86_64                       2.5.2-1.el5.rf         
installed       
> nagios-plugins.x86_64                    1.4.9-1.el5.rf         
installed       
> nagios-plugins-nrpe.x86_64               2.5.2-1.el5.rf         
installed       
> nagios-plugins-setuid.x86_64             1.4.9-1.el5.rf         
installed       
> 
> Any help is greatly appreciated!~!!!!

   - Answering my own post, because we solved this problem and a couple folks 
have asked me what the solution was.

   - Turns out there is an option in CentOS 5 default for sudo that requires 
TTY (terminal/login) in order to run commands.  It looks like this:

Defaults    requiretty

   - Simply add the following line so that NagIOS can run WITHOUT a real TTY 
session:

Defaults:nagios !requiretty



Good Luck!

 
> Erik M. Cummings
> Director of Operations
> Pathworks Software Corporation
> 
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