Nagios Core 3.4.4: crash on empty parents

[Eric Stanley]

A fix for that bug has now been committed to subversion on Sourceforge. 
You could try the before and after version.

I'm planning to create a 3.4.5 release candidate tarball shortly, so you 
could wait and download that as well.

On 2/22/13 12:53 PM, Paul Dubuc wrote:
> Could your config change have involved removal of a service that happened to
> be running at the time?  I recently found this problem in 3.4.4 and can easily
> reproduce it.
>
> http://tracker.nagios.org/view.php?id=424
>
>
> Jens Hektor wrote:
>> Hi,
>>
>> in the meantime I realized, that it is not so easy.
>>
>> What happened was this:
>>
>> in our 5k hosts / 11k services installation of nagios the accesspoints
>> get updated by a script that pulls data from a database and writes individual
>> files for each AP.
>>
>> A colleague ran this script and forcing nagios to relaod nagios crashed.
>> I was not able to start nagios in that configuration and unfortunately
>> I could not take a core dump.
>> I suspected a memory error at that point and rebooted the machine but
>> the error persisted.
>>
>> Running a diff against the old config files showed the missing parent
>> as only major difference. Correcting that manually in the file for that
>> AP fixed my problem.
>>
>> Then I wrote the message to this list.
>>
>> My colleague later showed me that there were other APs that had
>> missing parents so it became clear that it is not so simple to
>> reproduce the error.
>>
>> At the moment I am stuck and I cannot tip the finger at the error, sorry.
>>
>> So I will try later today if I can force nagios into that error again,
>> but as I think that nagios is pretty rocksolid I fear I am not able
>> to reproduce this.
>>
>> So I will come back when I have found something and we can close this upto now.
>>
>> Sorry and best regards, Jens Hektor
>>
>>
>>
>> On 22.02.2013 02:59, Eric Stanley wrote:
>>> Jens,
>>>
>>> I just tried what you suggested to reproduce the issue, but it did not
>>> crash on me. Could you send what you used to get it to crash?
>>>
>>> Thanks,
>>>
>>> Eric
>>>
>>> On 2/17/13 10:27 PM, Jens Hektor wrote:
>>>> I had nagios core 3.4.4 crashing on an empty "parents" line in a host config.
>>>>
>>>> Guess it should be easy to reproduce: simply add a line, where after the
>>>> "parents" are just some space characters.
>>
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>
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-- 
Eric Stanley
___
Developer
Nagios Enterprises, LLC
Email:  estanley at nagios.com
Web:    www.nagios.com


------------------------------------------------------------------------------
Everyone hates slow websites. So do we.
Make your web apps faster with AppDynamics
Download AppDynamics Lite for free today:
http://p.sf.net/sfu/appdyn_d2d_feb