Performance data not being returned

[Jonathan Gazeley]

The newlines were introduced by my mail client. There are no unusual 
characters in the output of the plugin. As far as I can tell, the 
perfdata complies completely with the specs.

status | key1=value1%;warn;crit, key2=value2%;warn;crit

The perfdata string is generated in a loop by appending an item for each 
DHCP pool I am monitoring. When we come to print the variable, it seems 
to get ignored (hence the pipe is printed but nothing else).

If I statically set the variable to have the same value as the perfdata 
ought to, then the plugin works properly, and the full perfdata string 
is returned.

So what is it about printing this variable through NRPE that breaks it? 
I am totally confused by this. Happy to send my plugin source code to 
the list if it helps (it's only 60 lines of perl).

Thanks,
Jonathan


On 14/05/12 16:33, Alex Griffin wrote:
> Are the newlines in your output an artifact of sending this over email
> or are there really newlines in your plugin output? If they're really
> there, you should eliminate them.
>
> Alex Griffin
> ---
> Tech Team
> agriffin at nagios.com
>
> Jonathan Gazeley wrote:
>> On 10/05/12 16:39, C. Bensend wrote:
>>>
>>>> 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?
>>>
>>> Too much data?
>>>
>>> Are you using SSL?
>>>
>>> I don't know that I've seen this behavior before - it's always
>>> been *invalid* perfdata that have caused this issue for me.
>>>
>>
>> I am using SSL in production, although not for testing. Both cases
>> return the same truncated results.
>>
>> The total status + performance data returned from this plugin is only
>> 500-and-something bytes, less than the limits for NRPE that I'd heard about.
>>
>> I'm wondering if it might be something to do with the embedded perl
>> interpreter. Does NRPE use this to execute perl-flavoured plugins?
>>
>> Thanks for your help,
>> Jonathan
>>
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>
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------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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