[rrd-users] RRD: "Error: Cannot create graph"

j.halifax2 at seznam.cz j.halifax2 at seznam.cz
Fri Oct 14 15:48:40 CEST 2011

Dear All,

Thank you so much, Alex for your advice.. The search is also nice.. ;)
I checked the access rights, but they were accessible. 

Let me explain the context:

Because of adding new targets I migrated from .log files to .rrd files 
(by changing LogFormat only). In my mrtg "mhb.cfg" file there is the
"WorkDir: /var/www/html/MHB" and I can see the .rrd files created 
and updating ok there.

I copied that mrtg "mhb.cfg" file to cgi-bin and when I call 14all.cgi?cfg=mhb.cfg 
it tries to use /var/www/html/var/www/html/MHB  WorkDir (as for Apache's
error_log)... When I created the required (incorrect) WorkDir, there is no
error message in the error_log but "Error: Cannot create graph" images
are still on the screen.. :(

Why does mrtg use the correct WorkDir but 14all.cgi doesn't?

> ------------ Původní zpráva ------------
> Od: Alex van den Bogaerdt <alex at vandenbogaerdt.nl>
> Předmět: Re: [rrd-users] RRD: "Error: Cannot create graph"
> Datum: 14.10.2011 12:00:43
> ----------------------------------------
> ----- Original Message ----- 
> From: <j.halifax2 at seznam.cz>
> To: <rrd-users at lists.oetiker.ch>
> Sent: Friday, October 14, 2011 11:39 AM
> Subject: [rrd-users] RRD: "Error: Cannot create graph"
> > 
> > Hi All,
> > 
> > Don't you know anybody what can be the reason for reporting
> > "Error: Cannot create graph" by called "localhost/14all.cgi?cfg=file" ?
> > 
> First that comes to mind is webserver permissions. Maybe 14all.cgi cannot write
> the file to disk?
> "When 14all encounters an error while creating a graph it displays an error
> picture. The default error picture contains the text ``error: cannot create
> graph''. If this option is set the given file will be sent as error picture.
> "
> > I tried to check the source and modules, but the "find" command haven't 
> > found any file with such error message included... :((
> http://lmgtfy.com/?q=14all.cgi+Cannot+create+graph
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