Snmp exporter - value preprocessing

[Виталий Ковалев]

Hello. Is there any way to do value preprocessing after lookup?

On my Network i have D-Link and Huawei switches. I use snmp_exporter to get Optical signal levels(DDM).

The main issue is that Huawei switches give values in Dbm and Dlink switches give values in mW.

Also i have some devices, for which your values should be divided by 10.

[Daniel Swarbrick]

Have you considered using recording rules?

https://prometheus.io/docs/prometheus/latest/configuration/recording_rules/

[Виталий Ковалев]

Maybe it can solve the problem, but in this case i'll have two type of metrics, with correct format and with incorrect.

I understand that i can do some more with data, unlike other storages. But is it normal to keep data for one metric in different formats?

вторник, 3 марта 2020 г., 21:04:09 UTC+12 пользователь Daniel Swarbrick написал:

[Brian Candler]

It's usual to keep the raw data as returned by the exporter.

If the two manufacturers are using the *same* OID from the same standard MIB, but using different units, then one of them is doing it wrong.

If the two manufacturers are returning different OIDs in different vendor-specific MIBs, then by definition those are different metrics.  Having different units for them would be normal.

[Roman T]

Hello.

I have a similar question. 

Is there anything you can do with the data on the snmp_exporter side? 

Where can I read about this?

Thank you!

понедельник, 2 марта 2020 г. в 04:53:05 UTC+3, kvp9...@gmail.com: