Design question

[Michael Weiner]

On Thu, Jul 31, 2008 at 4:56 PM, Sean McAfee
<smcafee at collaborativefusion.com> wrote:
> Michael Weiner wrote:
>> My only question after reading the redundant network monitoring
>> documentation is, how to do a remote check on the nagios process? Can
>> this be wrapped in nrpe?
>>
>> Thanks
>
> Exactly that - slaves monitor the master (and vice-versa) via a
> nrpe-wrapped check_nagios that checks /var/spool/nagios/nagios.log (runs
> every minute).  This is where the event handler is kicked off on any
> HARD state change.
>
> Since any large-scale problem will result in moderate-to-severe latency
> as checks timeout and reschedule (especially if send_nsca is timing out
> on passive result submissions as well), there's also a cron job that
> runs every two minutes that basically does the same thing, just outside
> the guise of the actual Nagios daemon.
>
> The only drawback is it can't self-demote (or you'd be spamming the
> external command file every time it runs).  Prompt self-promotion is the
> primary goal here, so some latency in self-demotion is perfectly
> acceptable since the only risk is receiving redundant notifications from
> each slave for any globally-monitored hosts.
>

That all makes good sense to me :)

Thanks
Michael

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null