Basically, MRTG always creates files in /var/lib/mrtg/ as lower case. When running the wizard, if you used a DNS address name that had upper case letters, when the bandwidth services are created, the $ARG1$ value is populated as it is typed in the wizard, however the .rrd file will always be in lowercase.
The resulting error for the service will be "/var/lib/mrtg/iNS04_3.rrd does not exist.".
Let me explain in more detail.
- I run the Network Switch / Router Wizard
In the Switch/Router Address field I type in iNS04
I complete the wizard, selecting the ports that I want to monitor bandwidth for
The mrtg file is populated with the switch address iNS04 <--- notice the case is still the same
The bandwidth service definition created for the ports populate the $ARG1$ field with iNS04_3.rrd <--- notice the case is still the same
When I go and look in /var/lib/mrtg/ the file exists, but in lower case ins04_3.rrd <--- notice the case is all lower
The resulting error for the service will be "/var/lib/mrtg/iNS04_3.rrd does not exist."
If I go and update the $ARG1$ field in the service definitions to lower case, everything starts working OK
1) When the wizard creates the service definitions, the $ARG1$ field should be populated in lower case
2) Update the script check_rrdtraf so the value abtained from $ARG1$ is converted to lowercase (the -f argument)
I discovered this in version 1.3 of the Wizard.
