Hi all.

I am having a problem with a Red hat 9 box. It has MRTG installed which in turn creates a Cron job when installed to run every 5 minutes or so.

There is a file in the folder /etc/cron.d called mrtg. I guess this is the script that is run.

The problem is that the script will not run due to some permissions error. I get an email every 5 mins with similar messages to this:

I have checked the permissions on the /etc/mrtg directory and they are set to 0755

Alternatively, how do I stop this cron job from running? I have run the crontab -l command as root, but there are no cron jobs listed.

Does anyone have any ideas? Sorry for my ignorance, but I am more a Windows guru than Linux master, so any help would be appreciated.

Many thanks in advance!

Stannerack, hi

best way (by a long shot) to manage CRON jobs is with Webmin (see www.webmin.com). It shows ALL the CRON jobs on a machine, even those 'buried' in different places, like /etc/crontab, etc/cron.d/mrtg, as well as the usual /var/spool/cron location. I had the same probs finding a 'rogue' job to kill until I found webmin, who found/saw EVERYTHING.

Usually the executables for MRTG go in /usr/bin/mrtg, or usr/local/bin.
the config file usually sit in /etc/mrtg/mrtg.conf, and the outputs go (usually) to a folder onm the apache server, usually /var/www/mrtg. Logs go in /var/log/mrtg.

If they are in the wrong place, MRTG needs to run as root to read/write to the logs.

does this help?

Grif

Hello Russell

Thanks for your help.

I now know why I am getting the error. There is disk corruption creeping in and the file system has managed to remount itself as Read-only.

MRTG cannot seem to function on a read-only volume.

Looks like I need to fix that first!

Thanks again