NRPE unable to read output

[Hari Sekhon]

Thanks for the reply, I just tried that but unfortunately it still gave 
the same result.

I have another sudo /etc/nagios/plugin and that works. Also, su-ing to 
nagios and then running the command by hand works.

so I'm still stuck....

Hari Sekhon



Andy Shellam (Mailing Lists) wrote:
> I had this problem, and had to put the full path to sudo 
> (/usr/bin/sudo) in nrpe's config.
>
> HTH
>
> Andy.
>
> Hari Sekhon wrote:
>> I know that nrpe works, I run over 100 checks via nrpe, and on this host 
>> all other nrpe checks work.
>>
>> I don't know if it's really the sudo in the line because I have another 
>> line which says
>>
>> command[check_another_plugin]=sudo /etc/nagios/another_plugin
>>
>> and this works fine when called via nrpe as such
>>
>> check_nrpe -H hostname -c check_another_plugin
>> OK: test ok
>>
>> If sudo was the problem, I would expect both checks to fail, but the 
>> other one works fine.
>>
>> Also, I need to run the check with sudo because this check will not work 
>> without root privs and my
>> nrpe runs under the nagios user.
>>
>> -h
>>
>> Hari Sekhon
>>
>>
>>
>> Lane, Jim wrote:
>>   
>>> Hari: I think your problem is with the sudo in the line 
>>>
>>> command[check_plugin]=sudo /etc/nagios/check_plugin
>>>
>>> Try it as 
>>>
>>> command[check_plugin]=/etc/nagios/check_plugin
>>>
>>> and see how you get on. I run NRPE plugins as above on my systems and
>>> they work fine.
>>>
>>> HTH
>>>
>>> Jim Lane 
>>>
>>> -----Original Message-----
>>> From: nagios-users-bounces at lists.sourceforge.net
>>> [mailto:nagios-users-bounces at lists.sourceforge.net] On Behalf Of Hari
>>> Sekhon
>>> Sent: February 21, 2007 8:04 AM
>>> To: Nagios Users mailinglist
>>> Subject: [Nagios-users] NRPE unable to read output
>>>
>>> Hi,
>>>    I'm using NRPE to execute checks on remote hosts and am have problems
>>>
>>> with one plugin on just one machine. I have the plugin in the 
>>> configuration of nrpe and execute
>>>
>>> /usr/nagios/libexec/check_nrpe -H hostname -c check_plugin
>>> NRPE: Unable to read output
>>>
>>> The definition of the command call in nrpe.cfg is as follows:
>>>
>>> command[check_plugin]=sudo /etc/nagios/check_plugin
>>>
>>> and I have the following line in /etc/sudoers:
>>>
>>> nagios  ALL=(ALL)  NOPASSWD: /etc/nagios/check_plugin
>>>
>>> NRPE is running as the nagios user. When logged in as root I can do
>>>
>>> su - nagios
>>> sudo /etc/nagios/check_plugin
>>> OK: test passed
>>>
>>> so I don't understand why it is saying no output.
>>>
>>> I tried changing the nrpe.cfg to have > /tmp/output.log 2>&1 at the end 
>>> of it but the file /tmp/output.log was not created so I assume that 
>>> there really was no output when run from the check_nrpe command.
>>> This works on all my other servers (most of which are Gentoo) and this 
>>> one is RHEL4. SELinux is disabled. I can execute all other nrpe checks 
>>> correctly on this server including another one which also uses sudo.
>>> The difference in Distro is the only thing I can think of but it even 
>>> works from the command line. I am using nrpe 2.6.
>>>
>>> I have racked my brains but can't think of anything else.
>>>
>>> Any ideas on this?
>>>
>>> -h
>>>
>>>   
>>>     
>>
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>>
>>   
>
>
> -- 
> Andy Shellam
> NetServe Support Team
>
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