Nagios Core 3.4.4: crash on empty parents

[Paul Dubuc]

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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