2.45.2 / 2023-12-19

This release contains security fixes in dependencies and has been built with go1.21.5. #13307

• [BUGFIX] TSDB: Fix PostingsForMatchers race with creating new series. #12558

2.49.0-rc.0 / 2023-12-12

• [FEATURE] Promtool: Add --run flag promtool test rules command. #12206
• [FEATURE] SD: Add support for NS records to DNS SD. #13219
• [FEATURE] UI: Add heatmap visualization setting in the Graph tab, useful histograms. #13096
• [FEATURE] Scraping: Add scrape_config.enable_compression (default true) to disable gzip compression when scraping the target. #13166
• [FEATURE] PromQL: Add a promql-experimental-functions feature flag containing some new experimental PromQL functions. #13103 NOTE: More experimental functions might be added behind the same feature flag in the future. Added functions:
  • Experimental mad_over_time (median absolute deviation around the median) function. #13059
  • Experimental sort_by_label and sort_by_label_desc functions allowing sorting returned series by labels. #11299
• [FEATURE] SD: Add __meta_linode_gpus label to Linode SD. #13097
• [FEATURE] API: Add exclude_alerts query parameter to /api/v1/rules to only return recording rules. #12999
• [FEATURE] TSDB: --storage.tsdb.retention.time flag value is now exposed as a prometheus_tsdb_retention_limit_seconds metric. #12986
• [FEATURE] Scraping: Add ability to specify priority of scrape protocols to accept during scrape (e.g. to scrape Prometheus proto format for certain jobs). This can be changed by setting global.scrape_protocols and scrape_config.scrape_protocols. #12738
• [ENHANCEMENT] Scraping: Automated handling of scraping histograms that violate scrape_config.native_histogram_bucket_limit setting. #13129
• [ENHANCEMENT] Scraping: Optimized memory allocations when scraping. #12992
• [ENHANCEMENT] SD: Added cache for Azure SD to avoid rate-limits. #12622
• [ENHANCEMENT] TSDB: Various improvements to OOO exemplar scraping. E.g. allowing ingestion of exemplars with the same timestamp, but with different labels. #13021
• [ENHANCEMENT] API: Optimize /api/v1/labels and /api/v1/label/<label_name>/values when 1 set of matchers are used. #12888
• [ENHANCEMENT] TSDB: Various optimizations for TSDB block index, head mmap chunks and WAL, reducing latency and memory allocations (improving API calls, compaction queries etc). #12997 #13058 #13056 #13040
• [ENHANCEMENT] PromQL: Optimize memory allocations and latency when querying float histograms. #12954
• [ENHANCEMENT] Rules: Instrument TraceID in log lines for rule evaluations. #13034
• [ENHANCEMENT] PromQL: Optimize memory allocations in query_range calls. #13043
• [ENHANCEMENT] Promtool: unittest interval now defaults to evaluation_intervals when not set. #12729
• [BUGFIX] SD: Fixed Azure SD public IP reporting #13241
• [BUGFIX] API: Fix inaccuracies in posting cardinality statistics. #12653
• [BUGFIX] PromQL: Fix inaccuracies of histogram_quantile with classic histograms. #13153
• [BUGFIX] TSDB: Fix rare fails or inaccurate queries with OOO samples. #13115
• [BUGFIX] TSDB: Fix rare panics on append commit when exemplars are used. #13092
• [BUGFIX] TSDB: Fix exemplar WAL storage, so remote write can send/receive samples before exemplars. #13113
• [BUGFIX] Mixins: Fix url filter on remote write dashboards. #10721
• [BUGFIX] PromQL/TSDB: Various fixes to float histogram operations. #12891 #12977 #12609 #13190 #13189 #13191 #13201 #13212 #13208
• [BUGFIX] Promtool: Fix int32 overflow issues for 32-bit architectures. #12978

Commits

• Add created timestamps to prompb by @ArthurSens in #12936
• Added ability to specify scrape protocols to accept during HTTP content type negotiation. by @bwplotka in #12738
• Fix int32 overflow issues by @krajorama in #12978
• Add the OpenSSF Scorecard GitHub Action by @pnacht in #12990
• Promtool: Fix/clarify documentation for axn notation. by @jdellithorpe-db in #12868
• Fix NaN checks in [Float]Histogram.Equals method by @linasm in #12891
• Merge release-2.48 back into main by @beorn7 in #12994
• promql(histograms): Change sample total calculation for histograms by @marctc in #12609
• Parse created timestamps from Prometheus Protobuf by @ArthurSens in #12973
• Very minor refactor of the integer overflow fix by @zenador in #13007
• prompb: Clarify things around optional fields in proto3 and gogo-protobuf by @beorn7 in #13008
• native-histograms: Fixed PrometheusProto scrape format preference. by @bwplotka in #13010
• promtool: Set test group interval default to evaluation interval by @rgroothuijsen in #13011
• Bump prometheus common to v0.45.0 by @YannickTeKulve in #13003
• ui: Pass unexpected boot errors to StartingContent component by @gillesdemey in #13016
• Refactor rules/manager.go into separate concerns by @dannykopping in #13014
• TSDB: Pre-size buffer to read samples from WAL by @bboreham in #12997
• Expose --storage.tsdb.retention.time in metric prometheus_tsdb_retention_limit_seconds by @msscaroso in #12986
• Metrics in the "scrape" package can now be registered with a non-default registry by @ptodev in #12958
• Hide position info for warnings when position is unknown by @zenador in #13031
• Build: remove -a from build to speed up rebuilds by @bboreham in #13026
• Make it possible to unwrap annotation error by @zenador in #13039
• Adding a query parameter to filter out active alerts by @rajagopalanand in #12999
• Exclude alerts: improve documentation by @roidelapluie in #13046
• PromQL: reduce garbage in range-query evaluation by @bboreham in #13043
• storage: use Go standard errors package by @mmorel-35 in #12935
• ci(lint): enable nolintlint and remove redundant comments by @alexandear in #12926
• discovery: use Go standard errors package by @mmorel-35 in #12918
• build(deps): bump actions/checkout from 3.0.0 to 4.1.0 by @dependabot in #12917
• build(deps): bump github/codeql-action from 1.0.26 to 2.21.9 by @dependabot in #12915
• Merge release-2.48 back into main by @beorn7 in #13057
• Include trace ID in log lines emitted during rule evaluation by @charleskorn in #13034
• Fix issue where chainSampleIterator can obscure errors by @charleskorn in #13006
• Assign new code owners for prometheus-mixin by @metalmatze in #13036
• ci(lint): enable godot; append dot at the end of comments by @alexandear in #12928
• Native histograms vs labels by @krajorama in #13005
• scrape: use Go standard errors package by @mmorel-35 in #12923
• Export promql.FindMinMaxTime by @dimitarvdimitrov in #13085
• build(deps): bump the go-opentelemetry-io group with 2 updates by @dependabot in #13077
• build(deps): bump github.com/prometheus/common from 0.44.0 to 0.45.0 in /documentation/examples/remote_storage by @dependabot in #13069
• Merge release-2.48 back into main by @beorn7 in #13089
• build(deps): bump github.com/linode/linodego from 1.23.0 to 1.24.0 by @dependabot in #13078
• Histogram performance: optimize floatBucketIterator by @linasm in #12954
• build(deps): bump the k8s-io group with 2 updates by @dependabot in #13076
• build(deps): bump github/codeql-action from 2.21.9 to 2.22.5 by @dependabot in #13071
• build(deps): bump actions/checkout from 4.1.0 to 4.1.1 in /scripts by @dependabot in #13081
• build(deps): bump github.com/klauspost/compress from 1.17.1 to 1.17.2 by @dependabot in #13080
• mixin: Use url filter on Remote Write dashboard by @ncauchois in #10721
• ValidateHistogram: strict Count check in absence of NaNs by @linasm in #12977
• Improve sensitivity of TestQuerierIndexQueriesRace by @dimitarvdimitrov in #12881
• util: use Go standard errors package by @mmorel-35 in #13091
• build(deps): bump actions/checkout from 4.1.0 to 4.1.1 by @dependabot in #13072
• build(deps): bump ossf/scorecard-a...

2.48.1 / 2023-12-08

• [BUGFIX] TSDB: Make the wlog watcher read segments synchronously when not tailing. #13224
• [BUGFIX] Agent: Participate in notify calls (fixes slow down in remote write handling introduced in 2.45). #13223

2.48.0 / 2023-11-16

• [CHANGE] Remote-write: respect Retry-After header on 5xx errors. #12677
• [FEATURE] Alerting: Add AWS SigV4 authentication support for Alertmanager endpoints. #12774
• [FEATURE] Promtool: Add support for histograms in the TSDB dump command. #12775
• [FEATURE] PromQL: Add warnings (and annotations) to PromQL query results. #12152 #12982 #12988 #13012
• [FEATURE] Remote-write: Add Azure AD OAuth authentication support for remote write requests. #12572
• [ENHANCEMENT] Remote-write: Add a header to count retried remote write requests. #12729
• [ENHANCEMENT] TSDB: Improve query performance by re-using iterator when moving between series. #12757
• [ENHANCEMENT] UI: Move /targets page discovered labels to expandable section #12824
• [ENHANCEMENT] TSDB: Optimize WBL loading by not sending empty buffers over channel. #12808
• [ENHANCEMENT] TSDB: Reply WBL mmap markers concurrently. #12801
• [ENHANCEMENT] Promtool: Add support for specifying series matchers in the TSDB analyze command. #12842
• [ENHANCEMENT] PromQL: Prevent Prometheus from overallocating memory on subquery with large amount of steps. #12734
• [ENHANCEMENT] PromQL: Add warning when monotonicity is forced in the input to histogram_quantile. #12931
• [ENHANCEMENT] Scraping: Optimize sample appending by reducing garbage. #12939
• [ENHANCEMENT] Storage: Reduce memory allocations in queries that merge series sets. #12938
• [ENHANCEMENT] UI: Show group interval in rules display. #12943
• [ENHANCEMENT] Scraping: Save memory when scraping by delaying creation of buffer. #12953
• [ENHANCEMENT] Agent: Allow ingestion of out-of-order samples. #12897
• [ENHANCEMENT] Promtool: Improve support for native histograms in TSDB analyze command. #12869
• [ENHANCEMENT] Scraping: Add configuration option for tracking staleness of scraped timestamps. #13060
• [BUGFIX] SD: Ensure that discovery managers are properly canceled. #10569
• [BUGFIX] TSDB: Fix PostingsForMatchers race with creating new series. #12558
• [BUGFIX] TSDB: Fix handling of explicit counter reset header in histograms. #12772
• [BUGFIX] SD: Validate HTTP client configuration in HTTP, EC2, Azure, Uyuni, PuppetDB, and Lightsail SDs. #12762 #12811 #12812 #12815 #12814 #12816
• [BUGFIX] TSDB: Fix counter reset edgecases causing native histogram panics. #12838
• [BUGFIX] TSDB: Fix duplicate sample detection at chunk size limit. #12874
• [BUGFIX] Promtool: Fix errors not being reported in check rules command. #12715
• [BUGFIX] TSDB: Avoid panics reported in logs when head initialization takes a long time. #12876
• [BUGFIX] TSDB: Ensure that WBL is repaired when possible. #12406
• [BUGFIX] Storage: Fix crash caused by incorrect mixed samples handling. #13055
• [BUGFIX] TSDB: Fix compactor failures by adding min time to histogram chunks. #13062

2.48.0-rc.2 / 2023-11-02

• [ENHANCEMENT] Scraping: Add configuration option for tracking staleness of scraped timestamps. #13060
• [BUGFIX] Storage: Fix crash caused by incorrect mixed samples handling. #13055
• [BUGFIX] TSDB: Fix compactor failures by adding min time to histogram chunks. #13062

2.48.0-rc.1 / 2023-10-29

• [BUGFIX] PromQL: Reduce inefficiency introduced by warnings/annotations and temporarily remove possible non-counter warnings. #13012

2.48.0-rc.0 / 2023-10-17

• [CHANGE] Remote-write: respect Retry-After header on 5xx errors. #12677
• [FEATURE] Alerting: Add AWS SigV4 authentication support for Alertmanager endpoints. #12774
• [FEATURE] Promtool: Add support for histograms in the TSDB dump command. #12775
• [FEATURE] PromQL: Add warnings (and annotations) to PromQL query results. #12152 #12982 #12988
• [FEATURE] Remote-write: Add Azure AD OAuth authentication support for remote write requests. #12572
• [ENHANCEMENT] Remote-write: Add a header to count retried remote write requests. #12729
• [ENHANCEMENT] TSDB: Improve query performance by re-using iterator when moving between series. #12757
• [ENHANCEMENT] UI: Move /targets page discovered labels to expandable section #12824
• [ENHANCEMENT] TSDB: Optimize WBL loading by not sending empty buffers over channel. #12808
• [ENHANCEMENT] TSDB: Reply WBL mmap markers concurrently. #12801
• [ENHANCEMENT] Promtool: Add support for specifying series matchers in the TSDB analyze command. #12842
• [ENHANCEMENT] PromQL: Prevent Prometheus from overallocating memory on subquery with large amount of steps. #12734
• [ENHANCEMENT] PromQL: Add warning when monotonicity is forced in the input to histogram_quantile. #12931
• [ENHANCEMENT] Scraping: Optimize sample appending by reducing garbage. #12939
• [ENHANCEMENT] Storage: Reduce memory allocations in queries that merge series sets. #12938
• [ENHANCEMENT] UI: Show group interval in rules display. #12943
• [ENHANCEMENT] Scraping: Save memory when scraping by delaying creation of buffer. #12953
• [ENHANCEMENT] Agent: Allow ingestion of out-of-order samples. #12897
• [ENHANCEMENT] Promtool: Improve support for native histograms in TSDB analyze command. #12869
• [BUGFIX] SD: Ensure that discovery managers are properly canceled. #10569
• [BUGFIX] TSDB: Fix PostingsForMatchers race with creating new series. #12558
• [BUGFIX] TSDB: Fix handling of explicit counter reset header in histograms. #12772
• [BUGFIX] SD: Validate HTTP client configuration in HTTP, EC2, Azure, Uyuni, PuppetDB, and Lightsail SDs. #12762 #12811 #12812 #12815 #12814 #12816
• [BUGFIX] TSDB: Fix counter reset edgecases causing native histogram panics. #12838
• [BUGFIX] TSDB: Fix duplicate sample detection at chunk size limit. #12874
• [BUGFIX] Promtool: Fix errors not being reported in check rules command. #12715
• [BUGFIX] TSDB: Avoid panics reported in logs when head initialization takes a long time. #12876
• [BUGFIX] TSDB: Ensure that WBL is repaired when possible. #12406

2.47.2 / 2023-10-11

This is a patch release to fix a bug, and to rebuild with Go 1.21.3.

• [BUGFIX] TSDB: Fix counter reset edgecases causing native histogram panics. #12838

2.47.1 / 2023-10-04

This is a patch release to fix a bug, and to rebuild with Go 1.21.1.

• [BUGFIX] Fix duplicate sample detection at chunk size limit #12874

2.45.1 / 2023-09-29

• [ENHANCEMENT] Hetzner SD: Support larger ID's that will be used by Hetzner in
  September. #12619
• [BUGFIX] Linode SD: Cast InstanceSpec values to int64 to avoid overflows on
  386 architecture. #12568
• [BUGFIX] TSDB: Handle TOC parsing failures. #10623