I would assume that the reason this feature was added was because there wasn't a feasible alternative way to do it.
I suggest you upgrade to v2.45.5 which is the current "Long Term Stable" release. The previous LTS release (v2.37) went end-of-life <https://prometheus.io/docs/introduction/release-cycle/> in July 2023, so it seems you're very likely running something unsupported at the moment. On Wednesday 22 May 2024 at 11:52:03 UTC+1 tejaswini vadlamudi wrote: > Sure Brian, I was aware of this. > This config comes with a software change, but is there any possibility or > workaround in the old (< 2.41) Prometheus releases on this topic? > > /Teja > > On Wednesday, May 22, 2024 at 12:01:31 PM UTC+2 Brian Candler wrote: > >> Yes, there are similar relabel actions "keepequal" and "dropequal": >> >> https://prometheus.io/docs/prometheus/latest/configuration/configuration/#relabel_config >> >> These were added in v2.41.0 >> <https://github.com/prometheus/prometheus/releases/v2.41.0> / 2022-12-20 >> https://github.com/prometheus/prometheus/pull/11564 >> >> They behave slightly differently from VM: in Prometheus, the >> concatenation of source_labels is compared with target_label. >> >> On Tuesday 21 May 2024 at 15:43:05 UTC+1 tejaswini vadlamudi wrote: >> >>> The below relabeling rule from Victoria Metrics is useful for matching >>> accurate ports and dropping unwanted targets. - action: >>> keep_if_equal >>> source_labels: >>> [__meta_kubernetes_service_annotation_prometheus_io_port, >>> __meta_kubernetes_pod_container_port_number] >>> Does anyone know how we can compare two labels using Prometheus >>> Relabeling rules? >>> >>> Based on my analysis, Prometheus doesn't support regex patterns on >>> 1. backreferences like \1 >>> 2. lookaheads or lookbehinds >>> >> -- 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/0a936729-7115-4f5c-ae98-04e99a6287a8n%40googlegroups.com.

