Trivial Description
Within snmpd you can define daemons to watch if them are running. Eg. with an entry
proc sshd
you declare sshd as a process to watch.
The results are organised in .1.3.6.1.4.1.2021.2.1 like this:
.1.3.6.1.4.1.2021.2.1.1.1 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.1.2 = INTEGER: 2
.1.3.6.1.4.1.2021.2.1.1.3 = INTEGER: 3
.1.3.6.1.4.1.2021.2.1.1.4 = INTEGER: 4
.1.3.6.1.4.1.2021.2.1.1.5 = INTEGER: 5
.1.3.6.1.4.1.2021.2.1.1.6 = INTEGER: 6
.1.3.6.1.4.1.2021.2.1.2.1 = STRING: sshd
.1.3.6.1.4.1.2021.2.1.2.2 = STRING: automount
.1.3.6.1.4.1.2021.2.1.2.3 = STRING: slurmd
.1.3.6.1.4.1.2021.2.1.2.4 = STRING: systemd-logind
.1.3.6.1.4.1.2021.2.1.2.5 = STRING: accounts-daemon
.1.3.6.1.4.1.2021.2.1.2.6 = STRING: cgrulesengd
.1.3.6.1.4.1.2021.2.1.3.1 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.3.2 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.3.3 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.3.4 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.3.5 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.3.6 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.4.1 = INTEGER: 0
.1.3.6.1.4.1.2021.2.1.4.2 = INTEGER: 0
.1.3.6.1.4.1.2021.2.1.4.3 = INTEGER: 0
.1.3.6.1.4.1.2021.2.1.4.4 = INTEGER: 0
.1.3.6.1.4.1.2021.2.1.4.5 = INTEGER: 0
.1.3.6.1.4.1.2021.2.1.4.6 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.5.1 = INTEGER: 3
.1.3.6.1.4.1.2021.2.1.5.2 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.5.3 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.5.4 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.5.5 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.5.6 = INTEGER: 1
.1.3.6.1.4.1.2021.2.1.100.1 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.100.2 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.100.3 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.100.4 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.100.5 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.100.6 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.101.1 = STRING:
.1.3.6.1.4.1.2021.2.1.101.2 = STRING:
.1.3.6.1.4.1.2021.2.1.101.3 = STRING:
.1.3.6.1.4.1.2021.2.1.101.4 = STRING:
.1.3.6.1.4.1.2021.2.1.101.5 = STRING:
.1.3.6.1.4.1.2021.2.1.101.6 = STRING:
.1.3.6.1.4.1.2021.2.1.102.1 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.102.2 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.102.3 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.102.4 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.102.5 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.102.6 = INTEGER: noError(0)
.1.3.6.1.4.1.2021.2.1.103.1 = STRING:
.1.3.6.1.4.1.2021.2.1.103.2 = STRING:
.1.3.6.1.4.1.2021.2.1.103.3 = STRING:
.1.3.6.1.4.1.2021.2.1.103.4 = STRING:
.1.3.6.1.4.1.2021.2.1.103.5 = STRING:
.1.3.6.1.4.1.2021.2.1.103.6 = STRING:
(Real world example)
Currently I add them myself for hosts where I know the order. but I think, it would be cool to add this to autodetection, it is a well know MIB and feature, with which you can detect problems quite easily when it is about daemons not opening an network port but are very important.
Mainly all below .1.3.6.1.4.1.2021.2.1.100 is very interesting: 0 is no error, 1 error. In .1.3.6.1.4.1.2021.2.1.101 you would have an associated error message of snmpd.
Would this be possible?