Update prom/alertmanager Docker tag to v0.32.0

[renovate]

This PR contains the following updates:

Package	Update	Change
prom/alertmanager	minor	v0.27.0 → v0.32.0

---

Release Notes

prometheus/alertmanager (prom/alertmanager)

v0.32.0: 0.32.0 / 2026-04-08

Compare Source

• [CHANGE] go get github.com/prometheus/alertmanager/ui will now fail as compiled UI assets are no longer checked into the repository. Downstream builds that rely on these assets being present in the source tree must now build the UI from source. #​5113
• [CHANGE] The '--enable-feature=auto-gomaxprocs' option is deprecated and will be removed in v0.33. This flag currently has no effect and can be safely removed from any startup scripts. #​5090
• [CHANGE] Update internal function signatures across multiple packages. This affects any project that integrates Alertmanager code.
• [ENHANCEMENT] Add static asset caching. #​5113
• [ENHANCEMENT] Reduce memory allocations through pre-sizing collections and batch allocation. #​5020
• [ENHANCEMENT] Replace help with documentation in navigation bar. #​4943
• [ENHANCEMENT] docs(ha): Update high availability documentation. #​5136
• [ENHANCEMENT] docs: Add auth_secret_file for smtp in document. #​5036
• [ENHANCEMENT] docs: Add description for global telegram_bot_token. #​5114
• [ENHANCEMENT] docs: Add note about notifier timeouts. #​5077
• [ENHANCEMENT] docs: Fix force_implicit_tls config field name. #​5030
• [ENHANCEMENT] docs: Link community supported integrations. #​4978
• [ENHANCEMENT] docs: Remove duplicate header. #​5034
• [ENHANCEMENT] docs: Update mutual tls reference in high availability documentation. #​5120
• [ENHANCEMENT] tracing: Use noop spans when tracing disabled. #​5118
• [ENHANCEMENT] ui: Serve pre-compressed assets. #​5133
• [FEATURE] Add silence annotations. #​4965
• [FEATURE] Add silence logging option. #​4163
• [FEATURE] Add support for multiple matcher set silences. #​4957
• [FEATURE] Add the reason for notifying in dedup stage. #​4971
• [FEATURE] mattermost: Flatten attachments into top-level config. #​5009
• [FEATURE] mattermost: Support global webhook url. #​4998
• [FEATURE] slack: Add default color from template. #​5014
• [FEATURE] slack: Allow receiver to edit existing messages. #​5007
• [FEATURE] template: Add dict, map and append functions. #​5093
• [FEATURE] webhook: Add full payload templating support for notifier. #​5011
• [BUGFIX] config: Check for empty cluster tls client config. #​5126
• [BUGFIX] config: Don't crash upon reading empty config for notifier. #​4979
• [BUGFIX] config: Fix ipv6 address handling in hostport.string(). #​5040
• [BUGFIX] mattermost: Omit empty text field in notifications. #​4985
• [BUGFIX] telegram: Send fallback message when notification exceeds character limit. #​5074
• [BUGFIX] tracing: Properly shutdown tracer provider. #​5131
• [BUGFIX] ui: Fix escaping for matcher values with quotes. #​4862
• [BUGFIX] ui: Handle special chars in silence regex-matchers. #​4942
• [BUGFIX] ui: Support utf-8 label names in matchers. #​5089

v0.31.1: 0.31.1 / 2026-02-11

Compare Source

• [BUGFIX] docs: Fix email TLS configuration example. #​4976
• [BUGFIX] docs: Add telegram bot token options to global config docs. #​4999

v0.31.0: 0.31.0 / 2026-02-02

Compare Source

• [ENHANCEMENT] docs(opsgenie): Fix description of api_url field. #​4908
• [ENHANCEMENT] docs(slack): Document missing app configs. #​4871
• [ENHANCEMENT] docs: Fix max-silence-size-bytes. #​4805
• [ENHANCEMENT] docs: Update expr for AlertmanagerClusterFailedToSendAlerts to exclude value 0. #​4872
• [ENHANCEMENT] docs: Use matchers for inhibit rules examples. #​4131
• [ENHANCEMENT] docs: add notification integrations. #​4901
• [ENHANCEMENT] docs: update slack_config attachments documentation links. #​4802
• [ENHANCEMENT] docs: update description of filter query params in openapi doc. #​4810
• [ENHANCEMENT] provider: Reduce lock contention. #​4809
• [FEATURE] slack: Add support for top-level text field in slack notification. #​4867
• [FEATURE] smtp: Add support for authsecret from file. #​3087
• [FEATURE] smtp: Customize the ssl/tls port support (#​4757). #​4818
• [FEATURE] smtp: Enhance email notifier configuration validation. #​4826
• [FEATURE] telegram: Add chat_id_file configuration parameter. #​4909
• [FEATURE] telegram: Support global bot token. #​4823
• [FEATURE] webhook: Support templating in url fields. #​4798
• [FEATURE] wechat: Add config directive to pass api secret via file. #​4734
• [FEATURE] provider: Implement per alert limits. #​4819
• [BUGFIX] Allow empty group_by to override parent route. #​4825
• [BUGFIX] Set spellcheck=false attribute on silence filter input. #​4811
• [BUGFIX] jira: Fix for handling api v3 with ADF. #​4756
• [BUGFIX] jira: Prevent hostname corruption in cloud api url replacement. #​4892

v0.30.1: 0.30.1 / 2026-01-12

Compare Source

• [BUGFIX] Fix memory leak in tracing client. #​4828

v0.30.0: 0.30.0 / 2025-12-15

Compare Source

• [CHANGE] Don't allow calling qids with an empty ids list. #​4707
• [FEATURE] Add mattermost integration. #​4090
• [FEATURE] Add saturday to the first day of the week options. #​4473
• [FEATURE] Add templating functions for working with urls. #​4625
• [FEATURE] cluster: Allow persistent peer names. #​4636
• [FEATURE] dispatch: Add start delay. #​4704
• [FEATURE] provider: Add subscriber channel metrics. #​4630
• [FEATURE] template: Add tojson function. #​4773
• [FEATURE] Add api http metrics. #​4162
• [FEATURE] Add distributed tracing support. #​4745
• [FEATURE] Add names to inhibit rules. #​4628
• [FEATURE] Add timeout option for pagerduty notifier. #​4354
• [FEATURE] Add timeout option for slack notifier. #​4355
• [FEATURE] Allow nested details fields in pagerduty. #​3944
• [FEATURE] Implement phantom_threading to group email alerts into threads. #​4623
• [FEATURE] gc: Report errors, but remove erroneous silences and continue. #​4724
• [FEATURE] jira: Template customfields. #​4029
• [FEATURE] jira: Allow configuring issue update via parameter. #​4621
• [FEATURE] Slack app support. #​4211
• [ENHANCEMENT] Add comment about smtp plain authentication. #​4741
• [ENHANCEMENT] Add documentation about high availability. #​4708
• [ENHANCEMENT] Add documentation for client_allowed_sans. #​4706
• [ENHANCEMENT] Improve logging around webhook dispatch failure. #​4511
• [ENHANCEMENT] Compile silence matchers when the silence is added. #​4695
• [ENHANCEMENT] Fix 's/client/alerts_api/g' broken link in 0.29. #​4718
• [ENHANCEMENT] Fix rocketchat_config docs. #​4767
• [ENHANCEMENT] Fix: <mute_time_interval> was renamed. #​4729
• [ENHANCEMENT] Improve inhibition performance. #​4607
• [ENHANCEMENT] Loadsnapshot: update matcher index properly while not holding lock. #​4714
• [ENHANCEMENT] Logging improvements. #​4113
• [ENHANCEMENT] Move query locking back into private query function. #​4694
• [ENHANCEMENT] Optimize the new inhibitor implementation for ~2.5x performance improvement. #​4668
• [ENHANCEMENT] Reduce the time dispatch.group holds the mutex. #​4670
• [ENHANCEMENT] Use b.loop() to simplify the code and improve performance. #​4642
• [ENHANCEMENT] Remove duplicate slice during silences query. #​4696
• [ENHANCEMENT] Silences: optimize incremental mutes queries via a silence version index. #​4723
• [ENHANCEMENT] Update description for filter param in openapi. #​4775
• [BUGFIX] Add new behavior to avoid races on config reload. #​4705
• [BUGFIX] config: Fix duplicate header detection for all case variants. #​2810
• [BUGFIX] marker: Stop state leakage from aggregation groups. #​4438
• [BUGFIX] Fix pprof debug endpoints not working with --web.route-prefix. #​4698
• [BUGFIX] Set context timeout for resolvepeers. #​4343

v0.29.0: 0.29.0 / 2025-11-01

Compare Source

• [FEATURE] Add incident.io notifier. #​4372
• [FEATURE] Add monospace message formatting. #​4362
• [FEATURE] Add ability to customize interval for maintenance to run. #​4541
• [ENHANCEMENT] Update Jira notifier to support both Jira cloud API v3 and Jira datacenter API v2. #​4542
• [ENHANCEMENT] Increase mixin rate intervals for alert FailedToSendAlerts. #​4206
• [ENHANCEMENT] Make /alertmanager group writable in docker image. #​4469
• [BUGFIX] Fix logged notification count on error in notify. #​4323
• [BUGFIX] Fix docker image permissions path. #​4288
• [BUGFIX] Fix error handling in template rendering for Telegram. #​4353
• [BUGFIX] Fix duplicate other in error messages for config. #​4366
• [BUGFIX] Fix logic that considers an alert reopened in Jira. #​4478
• [BUGFIX] Fix Jira issue count #​4615

v0.28.1: 0.28.1 / 2025-03-07

Compare Source

• [ENHANCEMENT] Improved performance of inhibition rules when using Equal labels. #​4119
• [ENHANCEMENT] Improve the documentation on escaping in UTF-8 matchers. #​4157
• [ENHANCEMENT] Update alertmanager_config_hash metric help to document the hash is not cryptographically strong. #​4210
• [BUGFIX] Fix panic in amtool when using --verbose. #​4218
• [BUGFIX] Fix templating of channel field for Rocket.Chat. #​4220
• [BUGFIX] Fix rocketchat_configs written as rocket_configs in docs. #​4217
• [BUGFIX] Fix usage for --enable-feature flag. #​4214
• [BUGFIX] Trim whitespace from OpsGenie API Key. #​4195
• [BUGFIX] Fix Jira project template not rendered when searching for existing issues. #​4291
• [BUGFIX] Fix subtle bug in JSON/YAML encoding of inhibition rules that would cause Equal labels to be omitted. #​4292
• [BUGFIX] Fix header for slack_configs in docs. #​4247
• [BUGFIX] Fix weight and wrap of Microsoft Teams notifications. #​4222
• [BUGFIX] Fix format of YAML examples in configuration.md. #​4207

v0.28.0: 0.28.0 / 2025-01-15

Compare Source

• [CHANGE] Templating errors in the SNS integration now return an error. #​3531 #​3879
• [CHANGE] Adopt log/slog, drop go-kit/log #​4089
• [FEATURE] Add a new Microsoft Teams integration based on Flows #​4024
• [FEATURE] Add a new Rocket.Chat integration #​3600
• [FEATURE] Add a new Jira integration #​3590 #​3931
• [FEATURE] Add support for GOMEMLIMIT, enable it via the feature flag --enable-feature=auto-gomemlimit. #​3895
• [FEATURE] Add support for GOMAXPROCS, enable it via the feature flag --enable-feature=auto-gomaxprocs. #​3837
• [FEATURE] Add support for limits of silences including the maximum number of active and pending silences, and the maximum size per silence (in bytes). You can use the flags --silences.max-silences and --silences.max-silence-size-bytes to set them accordingly #​3852 #​3862 #​3866 #​3885 #​3886 #​3877
• [FEATURE] Muted alerts now show whether they are suppressed or not in both the /api/v2/alerts endpoint and the Alertmanager UI. #​3793 #​3797 #​3792
• [ENHANCEMENT] Add support for content, username and avatar_url in the Discord integration. content and username also support templating. #​4007
• [ENHANCEMENT] Only invalidate the silences cache if a new silence is created or an existing silence replaced - should improve latency on both GET api/v2/alerts and POST api/v2/alerts API endpoint. #​3961
• [ENHANCEMENT] Add image source label to Dockerfile. To get changelogs shown when using Renovate #​4062
• [ENHANCEMENT] Build using go 1.23 #​4071
• [ENHANCEMENT] Support setting a global SMTP TLS configuration. #​3732
• [ENHANCEMENT] The setting room_id in the WebEx integration can now be templated to allow for dynamic room IDs. #​3801
• [ENHANCEMENT] Enable setting message_thread_id for the Telegram integration. #​3638
• [ENHANCEMENT] Support the since and humanizeDuration functions to templates. This means users can now format time to more human-readable text. #​3863
• [ENHANCEMENT] Support the date and tz functions to templates. This means users can now format time in a specified format and also change the timezone to their specific locale. #​3812
• [ENHANCEMENT] Latency metrics now support native histograms. #​3737
• [ENHANCEMENT] Add full width to adaptive card for msteamsv2 #​4135
• [ENHANCEMENT] Add timeout option for webhook notifier. #​4137
• [ENHANCEMENT] Update config to allow showing secret values when marshaled #​4158
• [ENHANCEMENT] Enable templating for Jira project and issue_type #​4159
• [BUGFIX] Fix the SMTP integration not correctly closing an SMTP submission, which may lead to unsuccessful dispatches being marked as successful. #​4006
• [BUGFIX] The ParseMode option is now set explicitly in the Telegram integration. If we don't HTML tags had not been parsed by default. #​4027
• [BUGFIX] Fix a memory leak that was caused by updates silences continuously. #​3930
• [BUGFIX] Fix hiding secret URLs when the URL is incorrect. #​3887
• [BUGFIX] Fix a race condition in the alerts - it was more of a hypothetical race condition that could have occurred in the alert reception pipeline. #​3648
• [BUGFIX] Fix a race condition in the alert delivery pipeline that would cause a firing alert that was delivered earlier to be deleted from the aggregation group when instead it should have been delivered again. #​3826
• [BUGFIX] Fix version in APIv1 deprecation notice. #​3815
• [BUGFIX] Fix crash errors when using url_file in the Webhook integration. #​3800
• [BUGFIX] fix Route.ID() returns conflicting IDs. #​3803
• [BUGFIX] Fix deadlock on the alerts memory store. #​3715
• [BUGFIX] Fix amtool template render when using the default values. #​3725
• [BUGFIX] Fix webhook_url_file for both the Discord and Microsoft Teams integrations. #​3728 #​3745
• [BUGFIX] Fix wechat api link #​4084
• [BUGFIX] Fix build info metric #​4166
• [BUGFIX] Fix UTF-8 not allowed in Equal field for inhibition rules #​4177

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.