0.34.0 / 2026-08-16
Checked 28 Sep 2026. BlackTree preserves the last verified facts if a later source check is temporarily unavailable.
Open the official publisher sourcePUBLISHER UPDATE · ALERTMANAGER-0.34.0
0.34.0 / 2026-08-16
Scope: Prometheus Alertmanager. This update record adds version, fix and known-issue context. Its publication date is not a lifecycle boundary.
[CHANGE] notify: The reason label on alertmanager_notifications_failed_total now distinguishes authError (HTTP 401/403) and rateLimited (HTTP 429) from the generic clientError . Dashboards/alerts matching reason="clientError" for these codes must be updated. #5332 [FEATURE] Add optional templatable labels to alert routes. #5328 [FEATURE] eventrecorder: Add inhibit rule names to inhibition_muted_alert events. #5315 [FEATURE] eventrecorder: Add stdout output type. #5311 [FEATURE] silences: Add active, expired, and pending boolean filter parameters to GET /api/v2/silences to allow filtering silences by state server-side. #5406 [FEATURE] sns: Add aws external_id support in sigv4 configuration. #5157 [FEATURE] template: Add toDate and mustToDate functions. #5327 [ENHANCEMENT] doc: Add AlertmanagerClusterFailedPeers alertmanager-mixin. #5301 [ENHANCEMENT] doc: Add description for Rocketchat parameters in global config. #5181 [ENHANCEMENT] doc: Add top level tracing configuration key. #5314 [ENHANCEMENT] doc: Fix Alertmanager port in amtool config routes example. #5312 [ENHANCEMENT] eventrecorder: Add optional webhook batching. #5392 [ENHANCEMENT] notify: The discord and webex integrations now report a failure reason on alertmanager_notifications_failed_total . #5332 [ENHANCEMENT] ui: Improve responsiveness of UI when loading thousands of alerts. #5357 [BUGFIX] eventrecorder: Fixed a minor performance regression when the event recorder is enabled. #5307 [BUGFIX] msteamsv2: Inherit global proxy_url into partial http_config . #5379 [BUGFIX] webhook: Keep custom payload string values verbatim instead of reinterpreting JSON leaves that look like YAML (e.g. values ending with a colon). #5304
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Review the official publisher document before deployment.
Checked 28 Sep 2026. BlackTree preserves the last verified facts if a later source check is temporarily unavailable.
Open the official publisher source