Prometheus - v2.51.0-rc.0

This version is built with Go 1.22.1.

There is a new optional build tag "dedupelabels", which should reduce memory consumption (#12304).
It is off by default; there will be an optional alternative image to try it out.

• [CHANGE] Scraping: Do experimental timestamp alignment even if tolerance is bigger than 1% of scrape interval #13624, #13737
• [FEATURE] Alerting: Relabel rules for AlertManagerConfig; allows routing alerts to different alertmanagers #12551, #13735
• [FEATURE] API: add limit param to series, label-names and label-values APIs #13396
• [FEATURE] UI (experimental native histograms): Add native histogram chart to Table view #13658
• [FEATURE] Promtool: Add a "tsdb dump-openmetrics" to dump in OpemMetrics format. #13194
• [FEATURE] PromQL (experimental native histograms): Add histogram_avg function #13467
• [ENHANCEMENT] Rules: Evaluate independent rules concurrently #12946, #13527
• [ENHANCEMENT] Scraping (experimental native histograms): Support exemplars #13488
• [ENHANCEMENT] Remote Write: Disable resharding during active retry backoffs #13562
• [ENHANCEMENT] Observability: Add native histograms to latency/duration metrics #13681
• [ENHANCEMENT] Observability: Add 'type' label to prometheus_tsdb_head_out_of_order_samples_appended_total #13607
• [ENHANCEMENT] API: Faster generation of targets into JSON #13469, #13484
• [ENHANCEMENT] Scraping, API: Use faster compression library #10782
• [ENHANCEMENT] OpenTelemetry: Performance improvements in OTLP parsing #13627
• [ENHANCEMENT] PromQL: Optimisations to reduce CPU and memory #13448, #13536
• [BUGFIX] PromQL: Constrain extrapolation in rate() to half of sample interval #13725
• [BUGFIX] Remote Write: Stop slowing down when a new WAL segment is created #13583, #13628
• [BUGFIX] PromQL: Fix wrongly scoped range vectors with @ modifier #13559
• [BUGFIX] Kubernetes SD: Pod status changes were not discovered by Endpoints service discovery #13337
• [BUGFIX] Azure SD: Fix 'error: parameter virtualMachineScaleSetName cannot be empty' (#13702)
• [BUGFIX] Remote Write: Fix signing for AWS sigv4 transport #13497
• [BUGFIX] Observability: Exemplars emitted by Prometheus use "trace_id" not "traceID" #13589