Nagios-users Digest, Vol 33, Issue 11

[Ian Orszaczki]

Hi, we just moved a Nagios 1.2 to Nagios 3 with 8500 service checks and 1200
host checks.

I experimented with PNP and had to offload the work to another server which
has been mentioned by others.

What I did was create a ramdisk on the Nagios server which stored the
performance data until it was batched off to the processing server (every
couple of minutes), then had it batched off to a server that only does the
graphing and web serving of the graphing pages. The maximum amount of
performance data lost if the Nagios server crashed was only a couple of
minutes.

So the service and host data check commands are just a script which -
* renames the data file with a date and time stamp
* checks whether the graphing server is up
*  scp's across any datafiles if it is and cleans up

No complex code, just a reverse proxy on the Nagios server so that when you
requested a graphing page it looked like it was being served from the Nagios
server itself.

Because I CNAME the graphing server, I can quickly move it to another server
running npcd.




Date: Fri, 6 Feb 2009 12:24:54 -0500
From: "Michael W. Lucas" <mwlucas at blackhelicopters.org>
Subject: [Nagios-users] PNP performance
To: nagios-users at lists.sourceforge.net
Message-ID:
       <20090206172454.GA16459 at bewilderbeast.blackhelicopters.org>
Content-Type: text/plain; charset=us-ascii

Hi,

I have Nagios 3.0.6 on FreeBSD 7.1/amd64, with ~1500 services on ~250
hosts.  I've been investigating replacing our MRTG setup with PNP.
PNP runs fine, and we are keeping about 1450 MRTG graphs.  Our plans
call for at least doubling the number of services and graphs.

Adding process_perfdata.pl has increased the system load from
"minimal" to 10-20.  I see that process_perfdata.pl will not run under
ePN.

Anyone out there have ways to reduce process_perfdata.pl's system
load, short of rewriting it in C or making it ePN-friendly?
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