[Nagiosplug-help] NRPE: Unable to read output

Brian Tomjack btomjack at suretytek.com
Thu Feb 19 22:45:56 CET 2009

Marc thanks for more ideas,

The requiretty was in there, i have hashed that item out.

modified the nrpe config to be
/usr/local/nagios/libexec/check_mailq -w 120 -c 175"

locally the command still works. when it is forced through nrpe i still 
get a unable to read output error unfortunately.

so i tried the addition of the 2>&1 to the end. appending that in the 
nrpe config and reloading nrpe still gave a unable to read output error 
on the nagios side. locally when executing with the 2>&1 on the end 
there was no error. the console output:
sudo /usr/local/nagios/libexec/check_mailq -w 120 -c 175 2>&1
OK: mailq (119) is below threshold (120/175)|unsent=119;120;175;0

which is the same output as when the 2>&1 is left off.

Im beginning to think that maybe nrpe just does not want to watch my 
mail queue on this server heh.



Marc Powell wrote:
> On Feb 19, 2009, at 11:58 AM, Brian Tomjack wrote:
>>>> on the remote host, in the nrpe config:
>>>> command[check_mailq]="sudo /usr/local/nagios/libexec/check_mailq -w
>>>> 120 -c 175"
> Specify the full path to sudo here. Also verify that you do not have  
> 'requiretty' in the sudoers file (visudo)
> Barring that, try changing your check command to be the following and  
> see if you get an error shown in the plugin output.
> command[check_mailq]="sudo /usr/local/nagios/libexec/check_mailq -w  
> 120 -c 175 2>&1"
> --
> Marc
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