[mrtg] Issue with MRTG and explicit OIDs

Steve Shipway s.shipway at auckland.ac.nz
Sun Jul 22 08:46:01 CEST 2012

Are you using 'option[]: gauge' (you probably should be)?
Can you use SNMPv2 (with these large numbers best to do this)?


Steve Shipway
University of Auckland ITS
UNIX Systems Design Lead
s.shipway at auckland.ac.nz<mailto:s.shipway at auckland.ac.nz>
Ph: +64 9 373 7599 ext 86487

From: mrtg-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch [mrtg-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch] on behalf of Peter Dolkens [peter.dolkens at ddrit.com]
Sent: Sunday, 22 July 2012 6:19 p.m.
To: mrtg at lists.oetiker.ch
Subject: [mrtg] Issue with MRTG and explicit OIDs

Hi all,

  I'm trying to set up some disk monitoring on my Synology NAS, using MRTG (windows).

  The Target I'm using is:
Target[piper.ddrit.com_DISK]: at piper.ddrit.com<mailto: at piper.ddrit.com>

  If I query either of these values via the command line, I get a correct result.
  If I query either of these values individually in MRTG, I get a correct result.
  If I use the line above, then the 2nd value has 2147483648 subtracted from the collected values.

  Does anyone know why it's doing this, or how to fix it?

  It's annoying because I'm intending to expand my NAS, and using this counter, I could theoretically display relative capacity usage (displayrelpercent) but right now MRTG can't seem to collect the 2nd counter properly, which is putting a damper on things.

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