I know this problem has been posted before but I didn't see any suggestions to the problem.
I have Nagios 3.0.3 with plugins v1.4.11. I have setup snmp monitoring to log it using MRTG and I keep getting check_mrtgtraf: Unable to open MRTG log file error
Monitor bandwidth via MRTG logs
use generic-service ; Inherit values from a template
service_description Port 1 Bandwidth Usage
I created the /var/lib/mrtg/ dir and made the directory nagios group and file owner but it's not working.. I know nagios has permission as i can touch to the dir. I even created a empty log file but it didn't help.
I followed the quick installation guide. I know snmp is working as I am monitoring uptime of the same switch and that's working ok.
Any ideas on where to look.