Any numbers on sizing a nagios server?

[Aaron Devey]

We're using a similar hardware config to the one Jake mentioned below
and nagios 2.10.  We push nagios slave servers to anywhere between 6000
and 7000 services per slave (though service latency starts to climb
quickly around 7000.)  Most services are checked every 5 minutes.  The
master server handles all host checks.

We've been able to scale this config up to about 7800 hosts and 50000
services in a single datacenter.  This includes 1 nagios master and 8
nagios slaves.

Your mileage will vary and as Jake mentioned, your environment may have
a large impact on expected performance.

-Aaron Devey


Paulus, Jake wrote:
> 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.
> --
>     |\  /| :                                : Addr: Valid Eindhoven B.V.
>  /  | \/ | :     Edgar R. Matzinger         :       t.a.v. E.R.
> Matzinger
> /   |    | :                                :       Paradijslaan 36
> \  /|  /\| :                                :       5611 KN Eindhoven
>  \/   /  \ :     Valid Eindhoven BV         :
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> Disclaimer: Any comments, opinions made are mine, etc ...
> 
> 
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