I'm reaching new levels of desperation with trying to get this working and
I'm hoping someone here can point to a workable example. So far, my
efforts have been in vain for something that should be so simple.
The short of it is that I've got a generator controller that can read the
ATS utility voltage and I want to plot this in Grafana. I've got Grafana,
Prometheus, and snmp_exporter set up, however it appears that snmp_exporter
isn't playing very nice with the generator controller and instead of
reading a DisplayString, it's interpreting it as a Gauge and only renders
in Grafana as a 0 or a 1 which is less than useful considering that the
grid changes in voltage anywhere from 0 to almost 280V.
When I poll the device using snmpget, I get the below:
# snmpget -v1 -c SECRET HOSTNAME GenMon-MIB::utilityVoltage
GenMon-MIB::utilityVoltage = STRING: 249
(In this case, the ATS is reading 249 volts).
When I poll the controller in snmp_exporter's web-UI, I get the below
result:
# HELP utilityVoltage The current utility voltage from the ATS. # TYPE
utilityVoltage gauge utilityVoltage{utilityVoltage="249"} 1
(The ATS is still returning 249V, it does fluctuate).
I've tried many searches online for how to implement an override so I can
get the value as an integer, but so far, none of them have produced any
favorable result. Normally I just get snmp_exporter errors and the exporter
won't start until I remove the override definition.
Here is my current snmp.yml:
genmon:
walk:
- 1.3.6.1.4.1.58399
get:
- 1.3.6.1.2.1.1.1.0
- 1.3.6.1.2.1.1.2.0
- 1.3.6.1.2.1.1.3.0
metrics:
- name: utilityVoltage
oid: 1.3.6.1.4.1.58399.1.0.1.1
type: DisplayString
help: The current utility voltage from the ATS.
version: 1
auth:
community: SECRET
(For some reason, Google stripped out the space indentations, it is
indented correctly)
Any advice on how I can fix this? If I can figure out this one override, I
can do the rest of them that I want to implement, I'm just racking my brain
on how to do this as none of the how-to's I've read describe how to use an
override that actually works.
Thank you for your time!
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