Hi All,
I'm new to the stack so apologies if this is a silly question.
I'm intending to use Prometheus + SNMP-Exporter to collect stats from a
large number of network devices (switches, routers, etc) using if_mib.
An issue i'm having difficulty with is extracting a subset of the "ifAlias"
label returned by SNMP-Exporter. These represent the "description" of
network interfaces on networking gear.
A subset of network interfaces are used for Services, which have a
well-known regex pattern. Unfortunately there is some degree of
inconsistency in the exact format of Interface descriptions, so regex-like
matching is required to pick out just the ServiceID. For example sake:
Pattern: /Z[0-9]{5}A/
Example ifAlias values:
Z12345A
Svc Z12345A
Service Z12345A
I'm trying to create a new label called "Service" that for all of the above
3 examples would just contain "Z12345A".
Example data from snmp-collector:
ifHCInOctets{ifAlias="Svc
Z12345A",ifDescr="TenGigabitEthernet0/0/4.ServiceInstance.1111",ifIndex="9",ifName="Te0/0/4.SI.11111"}
408
I'm intending to build various dashboards (grafana), alerting etc that
requires the matching of the ServiceID. It therefore seems to make sense to
me to store these as a new label whenever there is a match. It could be
done at query-time, however there are many use-cases for using this
(hypothetical) label so it'd reduce query complexity to just take the hit
on storage and store it as a label.
I'm unsure of how to go about this. My interpretation of relabel_configs is
that it can't be used for relabeling labels from scraped data, rather only
labels provided at SD time.
Is there an approach using either SNMP-Exporter config or Prometheus config
that can achieve this? Or do i need to solve it either with some sort of
custom intermediate service, or accept that there will be additional
complexity (and performance hit) at query-time?
Thanks in advance,
Luke
--
You received this message because you are subscribed to the Google Groups
"Prometheus Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/prometheus-users/ae94d201-e913-41b8-915c-69e09d5bcb6an%40googlegroups.com.
