chore(deps): update quay.io/prometheus/prometheus docker tag to v3.7.2

[soerenschneider]

This PR contains the following updates:

Package	Update	Change
quay.io/prometheus/prometheus	minor	v3.4.2 -> v3.7.2

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Release Notes

prometheus/prometheus (quay.io/prometheus/prometheus)

v3.7.2: 3.7.2 / 2025-10-22

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• [BUGFIX] AWS SD: Fix AWS SDK v2 credentials handling for EC2 and Lightsail discovery. #​17355
• [BUGFIX] AWS SD: Load AWS region from IMDS when not set. #​17376
• [BUGFIX] Relabeling: Fix labelmap action validation with the legacy metric name validation scheme. #​17372
• [BUGFIX] PromQL: Fix parsing failure when anchored and smoothed are used as metric names and label names. #​17353
• [BUGFIX] PromQL: Fix formatting of range vector selectors with smoothed/anchored modifier. #​17354

v3.7.1: 3.7.1 / 2025-10-16

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• [BUGFIX] OTLP: Prefix key_ to label name when translating an OTel attribute name starting with a single underscore, and keep multiple consecutive underscores in label name when translating an OTel attribute name. This reverts the breaking changes introduced in 3.7.0. #​17344

v3.7.0: 3.7.0 / 2025-10-15

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Warning

We discovered a breaking change in the OTLP endpoint: OpenTelemetry attribute names starting with underscore, for example _attrib, are no longer automatically translated to key_attrib. Please use 3.7.1 instead for OTLP ingestion.

Changelog

• [CHANGE] Remote-write: the following metrics are deprecated:
  • prometheus_remote_storage_samples_in_total, use prometheus_wal_watcher_records_read_total{type="samples"} and prometheus_remote_storage_samples_dropped_total instead,
  • prometheus_remote_storage_histograms_in_total, use prometheus_wal_watcher_records_read_total{type=~".*histogram_samples"} and prometheus_remote_storage_histograms_dropped_total instead,
  • prometheus_remote_storage_exemplars_in_total, use prometheus_wal_watcher_records_read_total{type="exemplars"} and prometheus_remote_storage_exemplars_dropped_total instead,
  • prometheus_remote_storage_highest_timestamp_in_seconds, use the more accurate prometheus_remote_storage_queue_highest_timestamp_seconds instead in dashboards and alerts to properly account for relabeling and for more accuracy. #​17065
• [FEATURE] PromQL: Add support for experimental anchored and smoothed rate behind feature flag promql-extended-range-selectors. #​16457
• [FEATURE] Federation: Add support for native histograms with custom buckets (NHCB). #​17215
• [FEATURE] PromQL: Add first_over_time(...) and ts_of_first_over_time(...) behind feature flag experimental-promql-functions. #​16963 #​17021
• [FEATURE] Remote-write: Add support for Azure Workload Identity as an authentication method for the receiver. #​16788
• [FEATURE] Remote-write: Add type and unit labels to outgoing time series in remote-write 2.0 when the type-and-unit-labels feature flag is enabled. #​17033
• [FEATURE] OTLP: Write start time of metrics as created time zero samples into TSDB when created-timestamp-zero-ingestion feature flag is enabled. #​16951
• [ENHANCEMENT] PromQL: Add warn-level annotations for counter reset conflicts in certain histogram operations. #​17051 #​17094
• [ENHANCEMENT] UI: Add scrape interval and scrape timeout to targets page. #​17158
• [ENHANCEMENT] TSDB: Reduce the resolution of native histograms read from chunks or remote read if the schema is exponential. #​17213
• [ENHANCEMENT] Remote write: Add logging for unexpected metadata in sample batches, when metadata entries are found in samples-only batches. #​17034 #​17082
• [ENHANCEMENT] Rules: Support concurrent evaluation for rules querying ALERTS and ALERTS_FOR_STATE. #​17064
• [ENHANCEMENT] TSDB: Add logs to improve visibility into internal operations. #​17074
• [PERF] OTLP: Write directly to TSDB instead of passing through a Remote-Write adapter when receiving OTLP metrics. #​16951
• [PERF] OTLP: Reduce number of logs emitted from OTLP endpoint. No need to log duplicate sample errors. #​17201
• [PERF] PromQL: Move more work to preprocessing step. #​16896
• [PERF] PromQL: Reduce allocations when walking the syntax tree. #​16593
• [PERF] TSDB: Optimize appender creation, slightly speeding up startup. #​16922
• [PERF] TSDB: Improve speed of querying a series with multiple matchers. #​13971
• [BUGFIX] Alerting: Mutating alerts relabeling (using replace actions, etc.) within a alertmanager_config.alert_relabel_configs block is now scoped correctly and no longer yields altered alerts to subsequent blocks. #​17063
• [BUGFIX] Config: Infer valid escaping scheme when scrape config validation scheme is set. #​16923
• [BUGFIX] TSDB: Correctly handle appending mixed-typed samples to the same series. #​17071 #​17241 #​17290 #​17295 #​17296
• [BUGFIX] Remote-write: Prevent sending unsupported native histograms with custom buckets (NHCB) over Remote-write 1.0, log warning. #​17146
• [BUGFIX] TSDB: Fix metadata entries handling on metadata-wal-records experimental feature for native histograms with custom buckets (NHCB) in protobuf scraping. #​17156
• [BUGFIX] TSDB: Ignore Native Histograms with invalid schemas during WAL/WBL replay. #​17214
• [BUGFIX] PromQL: Avoid empty metric names in annotations for histogram_quantile(). #​16794
• [BUGFIX] PromQL: Correct inaccurate character positions in errors for some aggregate expressions. #​16996 #​17031
• [BUGFIX] PromQL: Fix info() function on churning series. #​17135
• [BUGFIX] PromQL: Set native histogram to gauge type when subtracting or multiplying/dividing with negative factors. #​17004
• [BUGFIX] TSDB: Reject unsupported native histogram schemas when attempting to append to TSDB. For scrape and remote-write implement reducing the resolution to fit the maximum if the schema is within the -9 to 52. #​17189
• [BUGFIX] Remote-write: Fix HTTP handler to return after writing error response for invalid compression. #​17050
• [BUGFIX] Remote-write: Return HTTP error 400 instead of 5xx for wrongly formatted Native Histograms. #​17210
• [BUGFIX] Scrape: Prevent staleness markers from generating unnecessary series. #​16429
• [BUGFIX] TSDB: Avoid misleading Failed to calculate size of \"wal\" dir error logs during WAL clean-up. #​17006
• [BUGFIX] TSDB: Prevent erroneously dropping series records during WAL checkpoints. #​17029
• [BUGFIX] UI: Fix redirect to path of -web.external-url if -web.route-prefix is configured. #​17240
• [BUGIFX] Remote-write: Do not panic on invalid symbol table in remote-write 2.0. #​17160

v3.6.0: 3.6.0 / 2025-09-17

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• [FEATURE] PromQL: Add step(), and min() and max() on durations, behind feature flag promql-duration-expr. #​16777
• [FEATURE] API: Add a /v1/status/tsdb/blocks endpoint exposing metadata about loaded blocks. #​16695
• [FEATURE] Templates: Add toDuration() and now() functions. #​16619
• [ENHANCEMENT] Discovery: Add support for attaching namespace metadata to targets. #​16831
• [ENHANCEMENT] OTLP: Support new UnderscoreEscapingWithoutSuffixes strategy via otlp.translation_strategy. #​16849
• [ENHANCEMENT] OTLP: Support including scope metadata as metric labels via otlp.promote_scope_metadata. #​16878
• [ENHANCEMENT] OTLP: Add __type__ and __unit__ labels when feature flag type-and-unit-labels is enabled. #​16630
• [ENHANCEMENT] Tracing: Send the traceparent HTTP header during scrapes. #​16425
• [ENHANCEMENT] UI: Add option to disable info and warning query messages under Query page settings. #​16901
• [ENHANCEMENT] UI: Improve metadata handling for _count/_sum/_bucket suffixes. #​16910
• [ENHANCEMENT] TSDB: Track stale series in the Head block via the prometheus_tsdb_head_stale_series metric. #​16925
• [PERF] PromQL: Improve performance due to internal optimizations. #​16797
• [BUGFIX] Config: Fix "unknown global name escaping method" error messages produced during config validation. #​16801
• [BUGFIX] Discovery: Fix race condition during shutdown. #​16820
• [BUGFIX] OTLP: Generate target_info samples between the earliest and latest samples per resource. #​16737
• [BUGFIX] PromQL: Fail when NaN is passed as parameter to topk(), bottomk(), limitk() and limit_ratio(). #​16725
• [BUGFIX] PromQL: Fix extrapolation for native counter histograms. #​16828
• [BUGFIX] PromQL: Reduce numerical errors by disabling some optimizations. #​16895
• [BUGFIX] PromQL: Fix inconsistencies when using native histograms in subqueries. #​16879
• [BUGFIX] PromQL: Fix inconsistent annotations for rate() and increase() on histograms when feature flag type-and-unit-labels is enabled. #​16915
• [BUGFIX] Scraping: Fix memory corruption in slicelabels builds. #​16946
• [BUGFIX] TSDB: Fix panic on append when feature flag created-timestamp-zero-ingestion is enabled. #​16332
• [BUGFIX] TSDB: Fix panic on append for native histograms with empty buckets. #​16893

v3.5.0: 3.5.0 / 2025-07-14

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3.5 is a Long Term Support (LTS) release; see release https://prometheus.io/docs/introduction/release-cycle/
There are a number of new features, and no known breaking changes in this release:

• [FEATURE] PromQL: Add experimental type and unit metadata labels, behind feature flag type-and-unit-labels. #​16228 #​16632 #​16718 #​16743
• [FEATURE] PromQL: Add ts_of_(min|max|last)_over_time, behind feature flag experimental-promql-functions. #​16722 #​16733
• [FEATURE] Scraping: Add global option always_scrape_classic_histograms to scrape a classic histogram even if it is also exposed as native. #​16452
• [FEATURE] OTLP: New config options promote_all_resource_attributes and ignore_resource_attributes. #​16426
• [FEATURE] Discovery: New service discovery for STACKIT Cloud. #​16401
• [ENHANCEMENT] Hetzner SD: Add label_selector to filter servers. #​16512
• [ENHANCEMENT] PromQL: support non-constant parameter in aggregations like quantile and topk. #​16404
• [ENHANCEMENT] UI: Better total target count display when using keep_dropped_targets option. #​16604
• [ENHANCEMENT] UI: Add simple filtering on the /rules page. #​16605
• [ENHANCEMENT] UI: Display query stats in hover tooltip over table query tab. #​16723
• [ENHANCEMENT] UI: Clear search field on /targets page. #​16567
• [ENHANCEMENT] Rules: Check that rules parse without error earlier at startup. #​16601
• [ENHANCEMENT] Promtool: Optional fuzzy float64 comparison in rules unittests. #​16395
• [PERF] PromQL: Reuse histogramStatsIterator where possible. #​16686
• [PERF] PromQL: Reuse storage for custom bucket values for native histograms. #​16565
• [PERF] UI: Optimize memoization and search debouncing on /targets page. #​16589
• [PERF] UI: Fix full-page re-rendering when opening status nav menu. #​16590
• [PERF] Kubernetes SD: use service cache.Indexer to achieve better performance. #​16365
• [PERF] TSDB: Optionally use Direct IO for chunks writing. #​15365
• [PERF] TSDB: When fetching label values, stop work earlier if the limit is reached. #​16158
• [PERF] Labels: Simpler/faster stringlabels encoding. #​16069
• [PERF] Scraping: Reload scrape pools concurrently. #​16595 #​16783
• [BUGFIX] Top-level: Update GOGC before loading TSDB. #​16491
• [BUGFIX] Config: Respect GOGC environment variable if no "runtime" block exists. #​16558
• [BUGFIX] PromQL: Fix native histogram last_over_time. #​16744
• [BUGFIX] PromQL: Fix reported parser position range in errors for aggregations wrapped in ParenExpr #​16041 #​16754
• [BUGFIX] PromQL: Don't emit a value from histogram_fraction or histogram_quantile if classic and native histograms are present at the same timestamp. #​16552
• [BUGFIX] PromQL: Incorrect rounding of [1001ms] to [1s] and similar. #​16478
• [BUGFIX] PromQL: Fix inconsistent / sometimes negative histogram_count and histogram_sum. #​16682
• [BUGFIX] PromQL: Improve handling of NaNs in native histograms. #​16724
• [BUGFIX] PromQL: Fix unary operator precedence in duration expressions. #​16713
• [BUGFIX] PromQL: Improve consistency of avg aggregation and avg_over_time. #​16569 #​16773
• [BUGFIX] UI: Add query warnings and info to graph view. #​16753 #​16759
• [BUGFIX] API: Add HTTP Vary: Origin header to responses to avoid cache poisoning. #​16008
• [BUGFIX] Discovery: Avoid deadlocks by taking locks in consistent order. #​16587
• [BUGFIX] Remote-write: For Azure AD auth, allow empty client_id to suppport system assigned managed identity. #​16421
• [BUGFIX] Scraping: Fix rare memory corruption bug. #​16623
• [BUGFIX] Scraping: continue handling custom-bucket histograms after an exponential histogram is encountered. #​16720
• [BUGFIX] OTLP: Default config not respected when otlp: block is unset. #​16693

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