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Prometheus v2.29.0 Release Notes

Release Date: 2021-08-11 // over 2 years ago

  • 🍎 Note for macOS users: Due to changes in the upcoming Go 1.17, 🚀 this is the last Prometheus release that supports macOS 10.12 Sierra.

    • [CHANGE] Promote --storage.tsdb.allow-overlapping-blocks flag to stable. #9117
    • [CHANGE] Promote --storage.tsdb.retention.size flag to stable. #9004
    • [FEATURE] Add Kuma service discovery. #8844
    • [FEATURE] Add present_over_time PromQL function. #9097
    • 🔧 [FEATURE] Allow configuring exemplar storage via file and make it reloadable. #8974
    • 💻 [FEATURE] UI: Allow selecting time range with mouse drag. #8977
    • [FEATURE] promtool: Add feature flags flag --enable-feature. #8958
    • [FEATURE] promtool: Add file_sd file validation. #8950
    • [ENHANCEMENT] Reduce blocking of outgoing remote write requests from series garbage collection. #9109
    • 🐎 [ENHANCEMENT] Improve write-ahead-log decoding performance. #9106
    • 🐎 [ENHANCEMENT] Improve append performance in TSDB by reducing mutexes usage. #9061
    • [ENHANCEMENT] Allow configuring max_samples_per_send for remote write metadata. #8959
    • [ENHANCEMENT] Add __meta_gce_interface_ipv4_<name> meta label to GCE discovery. #8978
    • [ENHANCEMENT] Add __meta_ec2_availability_zone_id meta label to EC2 discovery. #8896
    • [ENHANCEMENT] Add __meta_azure_machine_computer_name meta label to Azure discovery. #9112
    • [ENHANCEMENT] Add __meta_hetzner_hcloud_labelpresent_<labelname> meta label to Hetzner discovery. #9028
    • [ENHANCEMENT] promtool: Add compaction efficiency to promtool tsdb analyze reports. #8940
    • 🔧 [ENHANCEMENT] promtool: Allow configuring max block duration for backfilling via --max-block-duration flag. #8919
    • 💻 [ENHANCEMENT] UI: Add sorting and filtering to flags page. #8988
    • 🐎 [ENHANCEMENT] UI: Improve alerts page rendering performance. #9005
    • 🛠 [BUGFIX] Log when total symbol size exceeds 232 bytes, causing compaction to fail, and skip compaction. #9104
    • 🛠 [BUGFIX] Fix incorrect target_limit reloading of zero value. #9120
    • 🛠 [BUGFIX] Fix head GC and pending readers race condition. #9081
    • 🛠 [BUGFIX] Fix timestamp handling in OpenMetrics parser. #9008
    • 🛠 [BUGFIX] Fix potential duplicate metrics in /federate endpoint when specifying multiple matchers. #8885
    • 🛠 [BUGFIX] Fix server configuration and validation for authentication via client cert. #9123
    • 🛠 [BUGFIX] Allow start and end again as label names in PromQL queries. They were disallowed since the introduction of @ timestamp feature. #9119