[mrtg] please help with detail graph issue

McDonald, Dan Dan.McDonald at austinenergy.com
Tue Sep 2 16:03:28 CEST 2008

On Tue, 2008-09-02 at 08:08 -0500, SENGELE, MIKE wrote:
> Dan,
> We have an old MRTG server running MRTG-RRD and upgraded to a new
> server. When we did the upgrade we installed the latest MRTG, RRD and we
> also used Routers2.cgi. We were experiencing the same graphing issue. So
> we rebuilt the new server and tried the MRTG-RRD. It is really strange
> that the main page always works but the detail page is hit or miss. One
> time it will show you all the graphs the next time one or maybe two and
> then the next time no graphs just the written statistics. 

Both of those programs have a cache directory where images are stored.
Perhaps there is some bizarre permission problem there.  For example, if
the apache user had rw but not x on the directory where the images were
supposed to be cached, it might get confused when it went to see if the
cache had already been written.  Or it might be something completely
different.  Maybe the cache directory is on a remote system with a clock
that is off.  Anyway, that's the place to look.

The directory is WorkDir: unless you have specified ImageDir:

Daniel J McDonald, CCIE #2495, CISSP #78281, CNX
Austin Energy

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