Monitoring Nagios

[Israel Brewster]

On Nov 28, 2007, at 4:52 AM, Mohr James wrote:

> Hi All!
>
> We had a problem the other day where the nagios process died and no  
> one
> noticed it for over 30 minutes. Therefore, I was thinking about ways  
> to
> monitor Nagios itself. One simply way would be a cronjob that checks  
> if
> the nagios process is running and then uses yaps or something to  
> send an
> SMS. But what about cases where the nagios process is running, but for
> whatever reason the messages are not being processed.
>
> I was thinking about setting up a service that is triggered by a  
> cronjob
> and then sends a notification. This notification writes a flag file  
> and
> every X minutes a cron job checks the age of the flag file. If the  
> flag
> file is too old, it sends an SMS via yaps.
>
> Rather than re-invent the wheel, I was wondering if other people had
> already implemented something similar.
>
> Regards,
>
> Jim Mohr

For a simple solution that requires no additional software, I just use  
the check_nagios plugin that comes with nagios, and run it from a  
script/cron job. This not only checks to see if nagios has crashed,  
but also checks the age of the status file. If a problem is detected  
with either (and I have had both situations) the script then first  
attempts to restart nagios via a full stop/start, then checks again  
and e-mails me with the result. So far, this has always just been a  
status notification saying that it had restarted nagios, as the stop/ 
start has worked as expected, but if for some reason that should fail  
it would notify me of this fact as well.
-----------------------------------------------
Israel Brewster
Computer Support Technician
Frontier Flying Service Inc.
5245 Airport Industrial Rd
Fairbanks, AK 99709
(907) 450-7250 x293
-----------------------------------------------


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