Performance data not being returned

Jonathan Gazeley jonathan.gazeley at bristol.ac.uk
Thu May 10 17:16:10 CEST 2012


On 10/05/12 15:06, Mike Guthrie wrote:
> On 5/10/2012 5:51 AM, Jonathan Gazeley wrote:
>> On 10/05/12 11:31, C. Bensend wrote:
>>>> The plugin is being executed through NRPE. Executing the plugin by hand
>>>> seems to return valid perfdata:
>>>>
>>>> [jg4461 at dhcp1 ~]$ /usr/lib64/nagios/plugins/check_dhcpd_pools
>>>> OK - all pools less than 80% full | 'resnet-wireless-652'=43.769%;80;90,
>>>> 'resnet-wireless-653'=47.923%;80;90,
>>>> 'resnet-wireless-654'=46.201%;80;90,
>>>> 'resnet-wireless-655'=44.681%;80;90,
>>>> 'resnet-wireless-656'=47.720%;80;90,
>>>> 'resnet-wireless-657'=47.112%;80;90,
>>>> 'resnet-wireless-658'=42.452%;80;90, 'resnet-wireless-659'=0.304%;80;90,
>>>> 'resnet-wireless-ratelimited-660'=1.114%;80;90,
>>>> 'resnet-wireless-onlinepayment-661'=0.405%;80;90,
>>>> 'resnet-wireless-onlinepayment-662'=0.405%;80;90,
>>>> 'resnet-wireless-onlinepayment-663'=0.304%;80;90,
>>>> 'resnet-wireless-consoles-665'=1.114%;80;90,
>>>> 'resnet-wireless-message-666'=0.000%;80;90,
>>>> 'resnet-wireless-instructions-667'=8.056%;80;90
>>> http://nagiosplug.sourceforge.net/developer-guidelines.html#AEN201
>>>
>>> I think you might try spaces, not commas.  I have developed a
>>> number of plugins, and I've never used anything but spaces to
>>> delimit the performance data.  If Nagios doesn't believe that's
>>> valid data, it's going to ignore it.
>>>
>>>
>> I removed the commas, and I'm now using only spaces. It still isn't
>> showing up in Nagios, though.
>>
>> I'm slightly perplexed, since the perfdata used to show up in Nagios in
>> the form that I already posted it to the list. I don't know what changed.
>>
>> Does anyone know any good ways of debugging this?
> Try using floats for your thresholds instead of integers.  Those are two
> different data types being compared.
>
> For debugging I usually set up a local passive check with hard-coded
> status text and performance data, and then I just play with the format
> until it starts being processed for a graph.

I've narrowed it down to a stage where running the plugin directly 
returns the right results, but running the plugin through check_nrpe on 
localhost returns this:

[jg4461 at dhcp1 log]$ /usr/lib64/nagios/plugins/check_nrpe -H localhost -c 
check_dhcpd_pools
OK - all pools less than 80% full |

What could cause NRPE to truncate the results in such a way?

Jonathan

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