[mrtg] graphing more than two values with mrtg/rrdtool

Mersberger, Robert robert.mersberger at goldenliving.com
Tue Jun 17 00:12:44 CEST 2008

maybe this is not the place to ask this but, I need help.
I have just installed mrtg, rrdtool and rouers2.cgi on a fedora fc9  and
seem to have all things functioning correctly except for updating the
rrd_data files for the site I am polling.
If I do an ls -al of the rrd_data directory I can watch the date and
time change with each run of my mrtg script.  if I dump one of the rrds
I only seen nulls,
Can anyone help me this this?


From: mrtg-bounces at lists.oetiker.ch
[mailto:mrtg-bounces at lists.oetiker.ch] On Behalf Of Steve Shipway
Sent: Monday, June 16, 2008 4:53 PM
To: 'Eric Hernandez'; 'mrtg at lists.oetiker.ch'
Subject: Re: [mrtg] graphing more than two values with mrtg/rrdtool

MRTG only holds two (and always two) variables ('in' and 'out') for a
particular Target.  You can therefore only give two parameters.


If you want a graph with more than two variables then take a look at the
Routers2 frontend which allows you to define Userdefined graphs over
multiple Targets, or else user RRDTool directly and write code to
generate a graph as you require.


See a demo of Routers2 with a combination graph at 






From: mrtg-bounces at lists.oetiker.ch
[mailto:mrtg-bounces at lists.oetiker.ch] On Behalf Of Eric Hernandez

I am trying to create a graph that graphs the cpu for three servers.
It only seems to want to graph the first two number?

Is it possible to graph all three values in one graph?

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