I'm trying to configure snmpd on my CentOS hosts to monitor the free disk usage in percent.
If I set snmpd.conf to
disk / disk /var
, the values can be queries with
220.127.116.11.4.1.2021.9.1.1.1 for "/" and
18.104.22.168.4.1.2021.9.1.1.2 for "/var".
I have several servers which don't have a separate "/var" partition. So the disk layout isn't standardized. I figured out, that the disk statement order in snmpd.conf dictates the dskIndex number of the snmp query result. So if I would flip "/" and "/var", "/" would have dskIndex 2.
In my monitoring system, I would have to configure each OID for each server separately because they might be different. So the idea is to have placeholders for non-existing filesystems.
Is it possible to either have placeholders to artificially count the dskIndex up or to somehow influence the dskIndex manually in snmpd.conf?
Thanks in advance