The State of Prometheus and OpenTelemetry Interoperability
Talkat KubeCon + CloudNativeCon Europe 2025 · on Friday, 2025-04-04· at 11:45· Level 1 | Hall Entrance N10 | Room G·
summary
Prometheus and OpenTelemetry now exchange concrete features: Prometheus 3.0 adds UTF8 support and an OpenTelemetry remote receiver (behind a security flag) so collectors can send metrics directly; remote_write v2 supports exemplars, created timestamps, native/classic histograms and per-series metadata; an OpenTelemetry collector delta-to-cumulative processor exists but scales poorly so Prometheus can convert delta instruments but at memory cost; native histograms are nearly stable (733 issues closed), resource-attribute strategies (labels, single target_info, selective promote) trade cardinality for usability.
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chapters (8)
- 0:00Introduction and context
- 1:25Philosophy and collaboration
- 5:56UTF-8 and naming standards
- 9:21Delta to cumulative handling
- 12:27Prometheus 3.0 and remote write
- 16:33Resource attributes challenges
- 22:26Future roadmap and conclusion
- 24:22Q&A session
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