OpenTelemetry developments in Prometheus over the last year
summary
Prometheus ships an OTLP ingestion endpoint with concrete changes: since 3.4 it offers a no-translation option to keep OpenTelemetry metric and label names unchanged, since 3.6 it can promote scope metadata to labels via OTP.promote scope metadata, and it adds initial delta temporality ingestion (feature-flagged) plus conversion of non-exponential OT histograms to native histograms. A rewrite of the OTLP path removes intermediary remote-write translation and yields measured gains—30–36% CPU drop and large memory reductions in benchmarks.
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chapters (10)
- 0:00OpenTelemetry in Prometheus
- 1:29OTLP ingestion improvements
- 4:23Scope metadata to labels
- 6:33Delta metrics support
- 7:37OTel histograms to native
- 10:12Resource attributes promotion
- 11:41OTLP endpoint performance
- 13:11Future plans and challenges
- 17:14Native metric name translation demo
- 22:22Q&A on discovery and integration
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