[mrtg] Re: Collect and Graph more than two OIDs

Alex van den Bogaerdt alex at ergens.op.het.net
Thu Nov 18 15:23:09 MET 2004

On Thu, Nov 18, 2004 at 08:41:36AM -0500, Kamran Siddiqui/NYLIC wrote:

> I am using RRDTool. Plotting is not too much of an issue its the
> storing/collecting more than two variables in a .rrd. Perhaps this should
> be a feature request to the next MRTG version.
> I will be experimenting with creating a separate rrd file for each cpu and
> then using routers2.cgi front end to graph the four counters into one
> chart. Lets see how that goes. But I do like to know how others achieve the
> same.

I combine data from more rrd files with no problems.  I am not using
routers2.cgi to do this; so if it fails for you, you need to have a
look at that program.

MRTG has, as far as I know, two hardcoded datasources.  If you want to
write a patch for MRTG I suggest you do something with the target name.

For instance:

Target[foo]: 1:public at router
Target[bar]: 2:public at router

could result in DS:foo_i  DS:foo_o  DS:bar_i  DS:bar_o

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