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@prombot prombot released this 31 Mar 14:47
v2.26.0
3cafc58
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Learn about vigilant mode.

Prometheus is now built and supporting Go 1.16 (#8544). This reverts the memory release pattern added in Go 1.12. This makes common RSS usage metrics showing more accurate number for actual memory used by Prometheus. You can read more details here.

Note that from this release Prometheus is using Alertmanager v2 by default.

  • [CHANGE] Alerting: Using Alertmanager v2 API by default. #8626
  • [CHANGE] Prometheus/Promtool: As agreed on dev summit, binaries are now printing help and usage to stdout instead of stderr. #8542
  • [FEATURE] Remote: Add support for AWS SigV4 auth method for remote_write. #8509
  • [FEATURE] Scaleway Discovery: Add Scaleway Service Discovery. #8555
  • [FEATURE] PromQL: Allow negative offsets. Behind --enable-feature=promql-negative-offset flag. #8487
  • [FEATURE] experimental Exemplars: Add in-memory storage for exemplars. Behind --enable-feature=exemplar-storage flag. #6635
  • [FEATURE] UI: Add advanced auto-completion, syntax highlighting and linting to graph page query input. #8634
  • [ENHANCEMENT] Digital Ocean Discovery: Add __meta_digitalocean_image label. #8497
  • [ENHANCEMENT] PromQL: Add last_over_time, sgn, clamp functions. #8457
  • [ENHANCEMENT] Scrape: Add support for specifying type of Authorization header credentials with Bearer by default. #8512
  • [ENHANCEMENT] Scrape: Add follow_redirects option to scrape configuration. #8546
  • [ENHANCEMENT] Remote: Allow retries on HTTP 429 response code for remote_write. Disabled by default. See configuration docs for details. #8237 #8477
  • [ENHANCEMENT] Remote: Allow configuring custom headers for remote_read. See configuration docs for details. #8516
  • [ENHANCEMENT] UI: Hitting Enter now triggers new query. #8581
  • [ENHANCEMENT] UI: Better handling of long rule and names on the /rules and /targets pages. #8608 #8609
  • [ENHANCEMENT] UI: Add collapse/expand all button on the /targets page. #8486
  • [BUGFIX] TSDB: Eager deletion of removable blocks on every compaction, saving disk peak space usage. #8007
  • [BUGFIX] PromQL: Fix parser support for special characters like炬. #8517
  • [BUGFIX] Rules: Update rule health for append/commit fails. #8619
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