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Lightning Talk: Practical OpenTelemetry with Prometheus 3.0

Lightningat PromCon EU 2025 · 2025-10-21..10-22· [observability, open-source]
speakerdeck:aknuds1
slides:none on file

Prometheus adds an info promql function that joins metrics with the target_info metric by default, pulling OpenTelemetry resource attributes (for example the cluster name) into result series without writing explicit joins. It assumes joining on job and instance, so it’s far simpler and more composable than generic join queries but also more limited. Experimental since early 2025, it addresses UX pain from writing joins and reduces query complexity in practice.

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