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upgrade alertmanager v0.34.0 - #7820

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upgrade-alertmanager-v0.34.0
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upgrade alertmanager v0.34.0#7820
SungJin1212 wants to merge 2 commits into
masterfrom
upgrade-alertmanager-v0.34.0

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@SungJin1212

@SungJin1212 SungJin1212 commented Sep 1, 2026

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What this PR does:
Upgrades Prometheus Alertmanager to v0.34.0.

Changes:

  • AlertGroup gained a routeLabels field, so the v2 alert groups merger test expectation was updated.
  • Transitively bumps client_golang to v1.24.1, whose api/v1 LabelNames returns model.LabelNames.
  • The reason label on cortex_alertmanager_notifications_failed_total now reports authError for HTTP 401/403 and rateLimited for HTTP 429. These were previously counted as clientError.

Which issue(s) this PR fixes:
Fixes #

Checklist

  • Tests updated
  • Documentation added
  • CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX]
  • docs/configuration/v1-guarantees.md updated if this PR introduces experimental flags

@SungJin1212
SungJin1212 requested a review from a team as a code owner September 1, 2026 04:56
Signed-off-by: SungJin1212 <tjdwls1201@gmail.com>
@SungJin1212
SungJin1212 force-pushed the upgrade-alertmanager-v0.34.0 branch from 727f221 to 8662c6e Compare September 1, 2026 05:27
Signed-off-by: SungJin1212 <tjdwls1201@gmail.com>
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