Thanks to both of you. The regex matching with metric_relabel_configs worked for my scenario since ifAlias is well standardized. I had previously tried this but misunderstood how to get the regex matching. The example above pushed us in the right direction.
On Tuesday, July 19, 2022 at 3:18:53 AM UTC-5 Brian Candler wrote: > Alternatively, I'm not sure about this, but I think you could just add > these extra labels in your alerting rules. > > Labels added there are templated, and there are various template functions > available, including reReplaceAll: > > https://prometheus.io/docs/prometheus/latest/configuration/template_reference/ > > However it would have to be repeated on every alerting rule where you > wanted to do this sort of grouping. > > On Monday, 18 July 2022 at 21:50:16 UTC+1 [email protected] wrote: > >> If you have your ifAlias well standardized you can use >> metric_relabel_configs to extract data. >> >> metric_relabel_configs: >> - source_labels: [ifAlias] >> regex: "(.+) - (.+) - (.+)" >> replacement: "$1" >> target_label: port_description >> - source_labels: [ifAlias] >> regex: "(.+) - (.+) - (.+)" >> replacement: "$2" >> target_label: port_location >> - source_labels: [ifAlias] >> regex: "(.+) - (.+) - (.+)" >> replacement: "$3" >> target_label: cable_id >> >> This will separate out your ifAlias into the component label parts. >> >> On Mon, Jul 18, 2022 at 10:45 PM Brian Bowen <[email protected]> wrote: >> >>> Hi all, >>> >>> We are attempting to set up alerting with Prometheus and Alertmanager >>> using some SNMP data. The basic use case is that we would like to group by >>> a substring of label data rather than an entire label. Let's say our >>> interfaces have the ifAlias label in the following format: >>> ifAlias="<brief description> - device 1 port 5 to device 2 port 7 - >>> <cable ID>" and I want to group alerts only by "device 1 port 5 to device 2 >>> port 7" (assuming this description is consistent across both devices), >>> leaving the rest of the description and cableID out. >>> >>> Is there a way to do this? We have not had success extracting this as a >>> separate label through snmp_exporter. I thought potentially we could do >>> some regex matching under the group_by rules with Alertmanager, but I >>> haven't seen any documentation/examples showing how to do this either. >>> >>> Let me know if there are any files I should attach. >>> >>> -- >>> 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/31b5a66a-0aa5-432b-b527-764ac392e1d4n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/prometheus-users/31b5a66a-0aa5-432b-b527-764ac392e1d4n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- 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/bf3644b1-6c00-42ec-85db-abb358a4fdd8n%40googlegroups.com.
