1000+ processes then Nagios fails

[Russell Scibetti]

I've read some of the replies, and I have one more suggestion to try. 
 If memory is the problem, and not CPU Load, try lowering the 
service_reaper_frequency.  By default it is set to 10, which means every 
10 seconds, Nagios will remove the contents of the pipe (what ALL the 
plugins write to - there is only 1 pipe) and process them.  

If you have that many services, you might be overwriting the pipe.  I 
had similar problems on one of my systems where the box kept swapping 
all the time (about 750 service checks, most every 5 minutes).  If you 
try lowering that value (try 5 for starters), Nagios will read the pipe 
more frequently, so it shouldn't get overwritten as much.

Just another suggestion.

-Russell Scibetti

Shane_Seidel at gwf.com.au wrote:

>
>
>
>Hi All,
>
>We have a dual P3-1200mhz 512M RAM server running Nagios 1.0 monitoring 180
>devices and 800 services.
>
>I have noticed that the number of nagios processes increase until they reach a
>count of approx 1000 at which time the server complains it is "out of memory"
>and starts shutting down services.
>
>I found that executing '/etc/rc.d/init.d/nagios reload' from cron would "solve"
>the problem. The number of processes would return to approx 60 and then start to
>climb again. I have the cron job execute every 30 mins.
>
>I took the config and put all the hosts, services, etc into Netsaint 0.7 on a
>P2-350Mhz 128 mb RAM and processes rarely rise to over 100 and then return to
>40-60.
>
>Note that I use the "default" option while compiling to maintain backward
>compatibility for Netsaint.
>
>Has anyone else experienced this? Is there any way to restrict the number of
>processes used by nagios. Note also that the big server also runs MRTG/RRD on
>approx 20 devices, although mrtg process complete
>
>Any help appreciated
>Thanks
>Shane
>
>
>
>
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-- 
Russell Scibetti
Quadrix Solutions, Inc.
http://www.quadrix.com
(732) 235-2335, ext. 7038





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