I guess you mean the nagios_cache that I should disable?
Actually I'm running 10 gmetad threads.
Is there a rule of thumb for the number of those threads?
Regards,
Alex
From: Vladimir Vuksan <vli...@veus.hr>
To: Alexander Karner/Germany/IBM@IBMDE,
Cc: ganglia-general@lists.sourceforge.net
Date: 21.05.2012 16:53
Subject: Re: [Ganglia-general] Ganglia <--> Icinga/Nagios
Integration
I have observed the same situation. There is a race condition if you are
caching metrics and the way Nagios/Icinga schedules checks where you may
end up with an empty cache. Way to resolve this is to either
1. Turn off cache - you will need to increase number of gmetad threads
2. Warm up the cache e.g.
https://github.com/ganglia/ganglia-web/tree/master/nagios
contains a warm up script you can run every e.g. 10 seconds that populates
the cache.
Vladimir
On Mon, 21 May 2012, Alexander Karner wrote:
> Hi!
>
> I'm actually facing an interesting behaviour of the nagios scripts in
the Ganglia web UI:
> (Using the latest available versions of Ganglia and Ganglia Web on AIX)
>
>
> 1) Sometimes a critical state is returned - allthough the last beacon
was received within the threshold:
>
> $ ./check_heartbeat host=host1 threshold=50
> CRITICAL Last beacon received 0 days, 0:00:11
>
> --> Running this command from the command line repeatedly may or may not
return this kind of information or an OK statement. It does
> not matter if the last beacon was received within the last 1, 3, 15 or
"whatever" seconds.
>
> 2) I also installed Icinga to monitor the health of the Ganglia daemons.
> In the service details I see up to now for each single host either the
OK statement - or I get a "UNKNOWN Hostname info not
> available. Likely invalid hostname"
> This message ususally disappears after some or several additionally
attempts to get the data but may come back later.
>
> If I try to verify the state from the comand line I receive in most
cases the "OK" statement and in a few cases the above shown
> "CRITICAL" value.
>
> Does anyone know how to bring this in a more consistent state?
>
> Mit freundlichen Grüßen / Kind regards
>
> Alexander Karner
>
>
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