Any numbers on sizing a nagios server?

[Paulus, Jake]

Nagios performance is very much specific to your environment. Nagios 3.x
is also MUCH faster than Nagios 2.x because of parallel host checks (and
other features.) Our performance is summed up below but your millage my
vary:

Primary server:
Nagios 3.0.3
Dual, quad-core processors @  2.4 GHz and 4GB of RAM
~650 hosts, 1550 services
System load averages 0.8, 0.6, 0.5 (CPUs are mostly idle with spikes
when hundreds of checks get kicked off at once)

Average service check latency 0.3 seconds
Average host check latency 2.5 seconds

All of our service checks are active, mostly snmpget and snmpbulkget and
lots of pings - largely checking every 2-5 minutes. Most of our service
checks are bash and perl scripts (we don't use the embedded Perl
interpreter.) We also collect and parse perfdata for graphing and run
Cacti and other very small MySQL-driven webapps on this same server. The
server is definitely a little over-kill but the price was right and it
was purchased with Nagios 2.x in mind - once again, Nagios 3.x is much
faster. Our environment is also not "tuned" for performance other than
to put in sane timeouts for service checks so they don't sit around
waiting too long.


Thanks, -Jake


-----Original Message-----
From: Edgar Matzinger [mailto:Edgar.Matzinger at valid.nl] 
Sent: Tuesday, November 04, 2008 1:56 PM
To: Nagios Mailinglist
Subject: [Nagios-users] Any numbers on sizing a nagios server?

LS,
 
  I've searched the internet (maybe I look in the wrong places) but I
can't find any numbers on sizing a nagios server. Are there any numbers
out there amongst you and are you willing to share?
 
Thanks, regards, Edgar.
-- 
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Disclaimer: Any comments, opinions made are mine, etc ... 


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