[rrd-users] The Y-Axis is Displaying an Incorrect Unit

Steve Shipway s.shipway at auckland.ac.nz
Tue Apr 22 23:26:51 CEST 2014

Generally speaking, it is better for RRDTool to work in SI units.  Thus,
send in bytes rather than in Kbytes, if possible; otherwise you need this
additional x1024 step.

Although I've used pnp4nagios here, it is a bit awkward to configure, as you
have to create a new template script for each checkcommand in php.  We only
have it installed on our test/dev server and are not using it in production
(we use MRTG there).  The values to PNP (including thresholds etc) are
passed in the XML and arrive as a PHP array, so you can code a loop to
convert each in turn (it's what I've done in some of the trial templates
here).  This is a bit complex for me to go into here though.

Steve Shipway
s.shipway at auckland.ac.nz

-----Original Message-----
From: rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch
[mailto:rrd-users-bounces+s.shipway=auckland.ac.nz at lists.oetiker.ch] On
Behalf Of mmartin
Sent: Wednesday, 23 April 2014 4:02 a.m.
To: rrd-users at lists.oetiker.ch
Subject: Re: [rrd-users] The Y-Axis is Displaying an Incorrect Unit

Hey Steve, thanks for the reply! Much appreciated...

Ok cool, that did work converting the Graphed value, but I am realizing now
that all the available "variables" from PNP4Nagios would have to be
converted. It seems like you do know a bit of PnP4Nagios, or at least you
are familiar with it, but just in case... The service check that gets
graphed has an XML file created for it which contains the PerformanceData
which was passed to Nagios. This includes the MIN and MAX values, the ACTUAL
value of the datasource, the CRIT and WARN values, etc...

So with that in mind, I'm wondering if it would just be easier for me to
multiply the data I send to PNP by 1024 to convert them to bytes BEFORE I
send the PerformanceData. 

Thanks again for the reply!


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