solutions for off-server PNP4Nagios perfdata processing?

Frost, Mark {BIS} mark.frost1 at pepsico.com
Wed Oct 3 16:56:13 CEST 2012


Davor,

My concern is more about the actual I/O to the RRD files and not so much processing the to-be-processed perfdata files (i.e. temporary files).   The heavy I/O is happening on the RRD filesystem and since I would of course need the RRD files to persist, I would not want to store them on a ram disk.  Plus it would need to be a fairly large ram disk to hold all the rrd files even if I were willing to lose them all if a reboot occurred.

We do use ram disks for Nagios status.dat files and spool files (i.e. things I can afford to lose in a reboot/crash) and it’s definitely been a good thing.   It still seems weird to have to do so much “compensating” for Nagios normal operations for a moderately large installation (not really even huge) to make it work well.   I’m guessing again that this is going to be vastly improved with Nagios 4 as well.  At least no spool files.

Thanks

Mark

From: davor grgicevic [mailto:dgrgicevic at gmail.com]
Sent: Wednesday, October 03, 2012 10:45 AM
To: Nagios Users List
Subject: Re: [Nagios-users] solutions for off-server PNP4Nagios perfdata processing?

Hi  Mark ...

did  you  try  a  using a ram  disk

http://exchange.nagios.org/directory/Documentation/Nagios-XI-Documentation/Utilizing-A-RAM-Disk-In-NagiosXI/details


Davor
On Wed, Oct 3, 2012 at 4:33 PM, Frost, Mark {BIS} <mark.frost1 at pepsico.com<mailto:mark.frost1 at pepsico.com>> wrote:
Hello.  Has anyone come up with solutions for processing Nagios performance data on a server other than a Nagios server?   We’ve been processing perfdata results on our Nagios server(s) for a while now and increasingly it’s just eating up too much I/O to make me comfortable.

Yes, we do use rrdcached and yes, I realize that shuffling data around on different disk spindles and controllers would help, but in today’s world where companies don’t like building any kind of physical server let alone one with all that additional hardware, that’s not entirely an option for us.

I realize that once the perfdata files are on the dedicated graphing server(s), processing them into RRD files there should be a no-brainer.  My problem is figuring out how to get them there without say, using a NAS device.   (If I/O’s a problem locally, I don’t want to shuffle that I/O to an even slower network device).

It would be ideal if somehow there was a process that I could just send that data to and have it picked up remotely.  Like if maybe Merlin have a special kind of peer that just received a stream of perfdata or something.  Anything else I could imagine would be some kind of home-grown solution like say pumping events into a messaging system from the Nagios server(s) and then letting the graphing server pick them up from the message queue(s).  I could also imagine some kind of fancy-pants module in Nagios 4 that did something like this, maybe.

Any thoughts would be appreciated.

Thanks

Mark


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Davor Grgicevic
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