[mrtg] Re: Monitor more than one year?

Bill Wichers billw at waveform.net
Mon Feb 21 14:59:19 MET 2005

> Hi
> Is it possible to monitor and graph a period which is longer than 1 year?
> at the moment i can't use rrd-tool, so it is not an acceptable solution...

While not the most elegant solution, I have a cronjob that runs at
midnight on the first of each year and archives all the old MRTG data (and
I mean *all* the data -- graphs, logs, everything). This way it is
possible to pull up archived historical data from previous years by going
to something like 2004/graphname.html, which is easy to deal with.

I don't think you'd be able to extend the amount of data MRTG is holding
to do "real" monitoring of > 1 year without a lot of patching, although
the logs themselves do hold more than 1 year of data -- but at lower
resolution. We're able to use our traffic calculator to get traffic/month
numbers going back some 1.5 years or so using only what's in MRTG's own
logfiles. How useful that is depends on what you're trying to achieve...


Waveform Technology
UNIX Systems Administrator

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