Alertmanager 0.24.0 → 0.34.0
17 releases · 3 breaking changes · 2 security fixes · 0 advisories fixed
2security3breaking2deprecated103feature81fix
Breaking changes
- breaking [CHANGE] The '--enable-feature=auto-gomaxprocs' option has been removed. This flag had no effect since v0.29 and was deprecated in v0.32. It can be safely removed from any startup scripts. #5090, #5251 in 0.33.0
- breaking [ENHANCEMENT] docs: Remove duplicate header. #5034 in 0.32.0
- breaking [CHANGE] API: Removal of all api/v1/ endpoints. These endpoints now log and return a deprecation message and respond with a status code of 410. #2970 in 0.27.0
Security changes
- security [SECURITY] Fix stored XSS via the /api/v1/alerts endpoint in the Alertmanager UI. in 0.26.0
- security [SECURITY] Fix stored XSS via the /api/v1/alerts endpoint in the Alertmanager UI (CVE-2023-40577). in 0.25.1
Deprecations
- deprecated [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 in 0.32.0
- deprecated [BUGFIX] Fix version in APIv1 deprecation notice. #3815 in 0.28.0
Every release in between
other[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[FEATURE] Add optional templatable labels to alert routes. #5328
feature[FEATURE] eventrecorder: Add inhibit rule names to inhibition_muted_alert events. #5315
feature[FEATURE] eventrecorder: Add stdout output type. #5311
feature[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[FEATURE] sns: Add aws external_id support in sigv4 configuration. #5157
feature[FEATURE] template: Add toDate and mustToDate functions. #5327
feature[ENHANCEMENT] doc: Add AlertmanagerClusterFailedPeers alertmanager-mixin. #5301
feature[ENHANCEMENT] doc: Add description for Rocketchat parameters in global config. #5181
feature[ENHANCEMENT] doc: Add top level tracing configuration key. #5314
fix[ENHANCEMENT] doc: Fix Alertmanager port in amtool config routes example. #5312
feature[ENHANCEMENT] eventrecorder: Add optional webhook batching. #5392
other[ENHANCEMENT] notify: The discord and webex integrations now report a failure reason on alertmanager_notifications_failed_total. #5332
other[ENHANCEMENT] ui: Improve responsiveness of UI when loading thousands of alerts. #5357
fix[BUGFIX] eventrecorder: Fixed a minor performance regression when the event recorder is enabled. #5307
fix[BUGFIX] msteamsv2: Inherit global proxy_url into partial http_config. #5379
fix[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
fix[BUGFIX] doc: fix missing notification_reason field in webhook documentation (#5329)
fix[BUGFIX] silences: fix silences snapshot missing legacy matchers field. This caused a bug that prevented older alertmanager versions from reading newer snapshots unnecessarily. (#5330)
fix[BUGFIX] silence with no matchers should populate an empty array in API response (#5331)
breaking[CHANGE] The '--enable-feature=auto-gomaxprocs' option has been removed. This flag had no effect since v0.29 and was deprecated in v0.32. It can be safely removed from any startup scripts. #5090, #5251
feature[CHANGE] Add group-key-in-metrics feature flag. #5047
other[CHANGE] Move AlertMarker, GroupMarker to marker package. #5047
other[CHANGE] Remove alertmanager_marked_alerts. #5047
other[CHANGE] Remove the following from types package: MemMarker, AlertState*, AlertStatus. #5047
feature[FEATURE] Introduce per aggregation group AlertMarkers and drop Global Alert Marker. #5047
feature[FEATURE] ui: Add support for silence annotations. #5017
feature[FEATURE] api: Add receiver labels and receiver_matchers filter to /api/v2/receivers, /api/v2/alerts, and /api/v2/alerts/groups. #5152
feature[FEATURE] eventrecorder: Add structured event recorder behind --enable-feature=event-recorder, with file, webhook, and kafka outputs. #5072, #5246
feature[ENHANCEMENT] Add the use_aws_http_client config option to the sns notifier. #5178
feature[ENHANCEMENT] template: Add now function to get current time. #5188
other[ENHANCEMENT] docs: Clarify YAML quoting vs matcher token quoting in UTF-8 matchers section. #5264
fix[BUGFIX] jira: Allow disabling the resolve transition when resolve_transition is not set. #4821
fix[BUGFIX] jira: Include unresolved issues in wont_fix_resolution JQL to prevent duplicate issue creation. #5185
fix[BUGFIX] sns: Support the AWS_CA_BUNDLE env variable for the sns notifier. #5178
fix[BUGFIX] Fix dispatcher goroutine leaks on destroyed alertgroup swap. #5241
fix[BUGFIX] dispatcher: Fix issue with dispatching to a contended route. #5179
fix[BUGFIX] ui: Provide prebuilt ui assets in release. #5191
other[ENHANCEMENT] ui: Support building artifacts in containers with Docker or Podman. #5102
other[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
deprecated[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
other[CHANGE] Update internal function signatures across multiple packages. This affects any project that integrates Alertmanager code.
feature[ENHANCEMENT] Add static asset caching. #5113
other[ENHANCEMENT] Reduce memory allocations through pre-sizing collections and batch allocation. #5020
other[ENHANCEMENT] Replace help with documentation in navigation bar. #4943
other[ENHANCEMENT] docs(ha): Update high availability documentation. #5136
feature[ENHANCEMENT] docs: Add auth_secret_file for smtp in document. #5036
feature[ENHANCEMENT] docs: Add description for global telegram_bot_token. #5114
feature[ENHANCEMENT] docs: Add note about notifier timeouts. #5077
fix[ENHANCEMENT] docs: Fix force_implicit_tls config field name. #5030
other[ENHANCEMENT] docs: Link community supported integrations. #4978
breaking[ENHANCEMENT] docs: Remove duplicate header. #5034
other[ENHANCEMENT] docs: Update mutual tls reference in high availability documentation. #5120
other[ENHANCEMENT] tracing: Use noop spans when tracing disabled. #5118
other[ENHANCEMENT] ui: Serve pre-compressed assets. #5133
feature[FEATURE] Add silence annotations. #4965
feature[FEATURE] Add silence logging option. #4163
feature[FEATURE] Add support for multiple matcher set silences. #4957
feature[FEATURE] Add the reason for notifying in dedup stage. #4971
other[FEATURE] mattermost: Flatten attachments into top-level config. #5009
other[FEATURE] mattermost: Support global webhook url. #4998
feature[FEATURE] slack: Add default color from template. #5014
feature[FEATURE] slack: Allow receiver to edit existing messages. #5007
feature[FEATURE] template: Add dict, map and append functions. #5093
feature[FEATURE] webhook: Add full payload templating support for notifier. #5011
fix[BUGFIX] config: Check for empty cluster tls client config. #5126
fix[BUGFIX] config: Don't crash upon reading empty config for notifier. #4979
fix[BUGFIX] config: Fix ipv6 address handling in hostport.string(). #5040
fix[BUGFIX] mattermost: Omit empty text field in notifications. #4985
fix[BUGFIX] telegram: Send fallback message when notification exceeds character limit. #5074
fix[BUGFIX] tracing: Properly shutdown tracer provider. #5131
fix[BUGFIX] ui: Fix escaping for matcher values with quotes. #4862
fix[BUGFIX] ui: Handle special chars in silence regex-matchers. #4942
fix[BUGFIX] ui: Support utf-8 label names in matchers. #5089
fix[BUGFIX] docs: Fix email TLS configuration example. #4976
fix[BUGFIX] docs: Add telegram bot token options to global config docs. #4999
fix[ENHANCEMENT] docs(opsgenie): Fix description of api_url field. #4908
other[ENHANCEMENT] docs(slack): Document missing app configs. #4871
fix[ENHANCEMENT] docs: Fix max-silence-size-bytes. #4805
other[ENHANCEMENT] docs: Update expr for AlertmanagerClusterFailedToSendAlerts to exclude value 0. #4872
other[ENHANCEMENT] docs: Use matchers for inhibit rules examples. #4131
feature[ENHANCEMENT] docs: add notification integrations. #4901
other[ENHANCEMENT] docs: update slack_config attachments documentation links. #4802
other[ENHANCEMENT] docs: update description of filter query params in openapi doc. #4810
other[ENHANCEMENT] provider: Reduce lock contention. #4809
feature[FEATURE] slack: Add support for top-level text field in slack notification. #4867
feature[FEATURE] smtp: Add support for authsecret from file. #3087
other[FEATURE] smtp: Customize the ssl/tls port support (#4757). #4818
other[FEATURE] smtp: Enhance email notifier configuration validation. #4826
feature[FEATURE] telegram: Add chat_id_file configuration parameter. #4909
other[FEATURE] telegram: Support global bot token. #4823
other[FEATURE] webhook: Support templating in url fields. #4798
feature[FEATURE] wechat: Add config directive to pass api secret via file. #4734
feature[FEATURE] provider: Implement per alert limits. #4819
fix[BUGFIX] Allow empty group_by to override parent route. #4825
fix[BUGFIX] Set spellcheck=false attribute on silence filter input. #4811
fix[BUGFIX] jira: Fix for handling api v3 with ADF. #4756
fix[BUGFIX] jira: Prevent hostname corruption in cloud api url replacement. #4892
fix[BUGFIX] Fix memory leak in tracing client. #4828
feature[CHANGE] Don't allow calling qids with an empty ids list. #4707
feature[FEATURE] Add mattermost integration. #4090
feature[FEATURE] Add saturday to the first day of the week options. #4473
feature[FEATURE] Add templating functions for working with urls. #4625
feature[FEATURE] cluster: Allow persistent peer names. #4636
feature[FEATURE] dispatch: Add start delay. #4704
feature[FEATURE] provider: Add subscriber channel metrics. #4630
feature[FEATURE] template: Add tojson function. #4773
feature[FEATURE] Add api http metrics. #4162
feature[FEATURE] Add distributed tracing support. #4745
feature[FEATURE] Add names to inhibit rules. #4628
feature[FEATURE] Add timeout option for pagerduty notifier. #4354
feature[FEATURE] Add timeout option for slack notifier. #4355
feature[FEATURE] Allow nested details fields in pagerduty. #3944
feature[FEATURE] Implement phantom_threading to group email alerts into threads. #4623
other[FEATURE] gc: Report errors, but remove erroneous silences and continue. #4724
other[FEATURE] jira: Template customfields. #4029
feature[FEATURE] jira: Allow configuring issue update via parameter. #4621
other[FEATURE] Slack app support. #4211
feature[ENHANCEMENT] Add comment about smtp plain authentication. #4741
feature[ENHANCEMENT] Add documentation about high availability. #4708
feature[ENHANCEMENT] Add documentation for client_allowed_sans. #4706
other[ENHANCEMENT] Improve logging around webhook dispatch failure. #4511
feature[ENHANCEMENT] Compile silence matchers when the silence is added. #4695
other[ENHANCEMENT] Fix 's/client/alerts_api/g' broken link in 0.29. #4718
other[ENHANCEMENT] Fix rocketchat_config docs. #4767
other[ENHANCEMENT] Fix: was renamed. #4729
other[ENHANCEMENT] Improve inhibition performance. #4607
other[ENHANCEMENT] Loadsnapshot: update matcher index properly while not holding lock. #4714
other[ENHANCEMENT] Logging improvements. #4113
other[ENHANCEMENT] Move query locking back into private query function. #4694
feature[ENHANCEMENT] Optimize the new inhibitor implementation for ~2.5x performance improvement. #4668
other[ENHANCEMENT] Reduce the time dispatch.group holds the mutex. #4670
other[ENHANCEMENT] Use b.loop() to simplify the code and improve performance. #4642
other[ENHANCEMENT] Remove duplicate slice during silences query. #4696
fix[BUGFIX] Add new behavior to avoid races on config reload. #4705
fix[BUGFIX] config: Fix duplicate header detection for all case variants. #2810
fix[BUGFIX] marker: Stop state leakage from aggregation groups. #4438
fix[BUGFIX] Fix pprof debug endpoints not working with --web.route-prefix. #4698
fix[BUGFIX] Set context timeout for resolvepeers. #4343
+2 more items in the release notesfeature[FEATURE] Add incident.io notifier. #4372
feature[FEATURE] Add monospace message formatting. #4362
feature[FEATURE] Add ability to customize interval for maintenance to run. #4541
other[ENHANCEMENT] Update Jira notifier to support both Jira cloud API v3 and Jira datacenter API v2. #4542
other[ENHANCEMENT] Increase mixin rate intervals for alert FailedToSendAlerts. #4206
other[ENHANCEMENT] Make /alertmanager group writable in docker image. #4469
fix[BUGFIX] Fix logged notification count on error in notify. #4323
fix[BUGFIX] Fix docker image permissions path. #4288
fix[BUGFIX] Fix error handling in template rendering for Telegram. #4353
fix[BUGFIX] Fix duplicate other in error messages for config. #4366
fix[BUGFIX] Fix logic that considers an alert reopened in Jira. #4478
fix[BUGFIX] Fix Jira issue count #4615
other[ENHANCEMENT] Improved performance of inhibition rules when using Equal labels. #4119
other[ENHANCEMENT] Improve the documentation on escaping in UTF-8 matchers. #4157
other[ENHANCEMENT] Update alertmanager_config_hash metric help to document the hash is not cryptographically strong. #4210
fix[BUGFIX] Fix panic in amtool when using --verbose. #4218
fix[BUGFIX] Fix templating of channel field for Rocket.Chat. #4220
fix[BUGFIX] Fix rocketchat_configs written as rocket_configs in docs. #4217
fix[BUGFIX] Fix usage for --enable-feature flag. #4214
fix[BUGFIX] Trim whitespace from OpsGenie API Key. #4195
fix[BUGFIX] Fix Jira project template not rendered when searching for existing issues. #4291
fix[BUGFIX] Fix subtle bug in JSON/YAML encoding of inhibition rules that would cause Equal labels to be omitted. #4292
fix[BUGFIX] Fix header for slack_configs in docs. #4247
fix[BUGFIX] Fix weight and wrap of Microsoft Teams notifications. #4222
fix[BUGFIX] Fix format of YAML examples in configuration.md. #4207
other[CHANGE] Templating errors in the SNS integration now return an error. #3531 #3879
other[CHANGE] Adopt log/slog, drop go-kit/log #4089
feature[FEATURE] Add a new Microsoft Teams integration based on Flows #4024
feature[FEATURE] Add a new Rocket.Chat integration #3600
feature[FEATURE] Add a new Jira integration #3590 #3931
feature[FEATURE] Add support for GOMEMLIMIT, enable it via the feature flag --enable-feature=auto-gomemlimit. #3895
feature[FEATURE] Add support for GOMAXPROCS, enable it via the feature flag --enable-feature=auto-gomaxprocs. #3837
feature[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
other[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
feature[ENHANCEMENT] Add support for content, username and avatar_url in the Discord integration. content and username also support templating. #4007
feature[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
feature[ENHANCEMENT] Add image source label to Dockerfile. To get changelogs shown when using Renovate #4062
other[ENHANCEMENT] Build using go 1.23 #4071
other[ENHANCEMENT] Support setting a global SMTP TLS configuration. #3732
feature[ENHANCEMENT] The setting room_id in the WebEx integration can now be templated to allow for dynamic room IDs. #3801
other[ENHANCEMENT] Enable setting message_thread_id for the Telegram integration. #3638
other[ENHANCEMENT] Support the since and humanizeDuration functions to templates. This means users can now format time to more human-readable text. #3863
other[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
other[ENHANCEMENT] Latency metrics now support native histograms. #3737
feature[ENHANCEMENT] Add full width to adaptive card for msteamsv2 #4135
feature[ENHANCEMENT] Add timeout option for webhook notifier. #4137
feature[ENHANCEMENT] Update config to allow showing secret values when marshaled #4158
other[ENHANCEMENT] Enable templating for Jira project and issue_type #4159
fix[BUGFIX] Fix the SMTP integration not correctly closing an SMTP submission, which may lead to unsuccessful dispatches being marked as successful. #4006
fix[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
fix[BUGFIX] Fix a memory leak that was caused by updates silences continuously. #3930
fix[BUGFIX] Fix hiding secret URLs when the URL is incorrect. #3887
fix[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
fix[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
deprecated[BUGFIX] Fix version in APIv1 deprecation notice. #3815
fix[BUGFIX] Fix crash errors when using url_file in the Webhook integration. #3800
fix[BUGFIX] fix Route.ID() returns conflicting IDs. #3803
fix[BUGFIX] Fix deadlock on the alerts memory store. #3715
fix[BUGFIX] Fix amtool template render when using the default values. #3725
fix[BUGFIX] Fix webhook_url_file for both the Discord and Microsoft Teams integrations. #3728 #3745
fix[BUGFIX] Fix wechat api link #4084
fix[BUGFIX] Fix build info metric #4166
fix[BUGFIX] Fix UTF-8 not allowed in Equal field for inhibition rules #4177
other[CHANGE] Discord Integration: Enforce max length in message. #3597
breaking[CHANGE] API: Removal of all api/v1/ endpoints. These endpoints now log and return a deprecation message and respond with a status code of 410. #2970
feature[FEATURE] UTF-8 Support: Introduction of support for any UTF-8 character as part of label names and matchers. Please read more below. #3453, #3483, #3567, #3570
feature[FEATURE] Metrics: Introduced the experimental feature flag --enable-feature=receiver-name-in-metrics to include the receiver name in the following metrics: #3045
otheralertmanager_notifications_total
otheralertmanager_notifications_failed_totall
otheralertmanager_notification_requests_total
otheralertmanager_notification_requests_failed_total
otheralertmanager_notification_latency_seconds
feature[FEATURE] Metrics: Introduced a new gauge named alertmanager_inhibition_rules that counts the number of configured inhibition rules. #3681
feature[FEATURE] Metrics: Introduced a new counter named alertmanager_alerts_supressed_total that tracks muted alerts, it contains a reason label to indicate the source of the mute. #3565
feature[ENHANCEMENT] Discord Integration: Introduced support for webhook_url_file. #3555
feature[ENHANCEMENT] Microsoft Teams Integration: Introduced support for webhook_url_file. #3555
feature[ENHANCEMENT] Microsoft Teams Integration: Add support for summary. #3616
feature[ENHANCEMENT] Metrics: Notification metrics now support two new values for the label reason, contextCanceled and contextDeadlineExceeded. #3631
other[ENHANCEMENT] Email Integration: Contents of auth_password_file are now trimmed of prefixed and suffixed whitespace. #3680
fix[BUGFIX] amtool: Fixes the error scheme required for webhook url when using amtool with --alertmanager.url. #3509
fix[BUGFIX] Mixin: Fix AlertmanagerFailedToSendAlerts, AlertmanagerClusterFailedToSendAlerts, and AlertmanagerClusterFailedToSendAlerts to make sure they ignore the reason label. #3599
featureIf this is a new Alertmanager installation, we recommend enabling UTF-8 strict mode before creating an Alertmanager configuration file. You can enable strict mode with alertmanager --config.file=config.yml --enable-feature="utf8-strict-mode".
otherIf this is an existing Alertmanager installation, we recommend running the Alertmanager in the default mode called fallback mode before enabling UTF-8 strict mode. In this mode, Alertmanager will log a warning if you need to make any changes to your configuration file before UTF-8 strict mode can…
security[SECURITY] Fix stored XSS via the /api/v1/alerts endpoint in the Alertmanager UI.
other[CHANGE] Telegram Integration: api_url is now optional. #2981
other[CHANGE] Telegram Integration: ParseMode default is now HTML instead of MarkdownV2. #2981
other[CHANGE] Webhook Integration: url is now marked as a secret. It will no longer show up in the logs as clear-text. #3228
feature[CHANGE] Metrics: New label reason for alertmanager_notifications_failed_total metric to indicate the type of error of the alert delivery. #3094 #3307
feature[FEATURE] Clustering: New flag --cluster.label, to help to block any traffic that is not meant for the cluster. #3354
feature[FEATURE] Integrations: Add Microsoft Teams as a supported integration. #3324
other[ENHANCEMENT] Telegram Integration: Support bot_token_file for loading this secret from a file. #3226
other[ENHANCEMENT] Webhook Integration: Support url_file for loading this secret from a file. #3223
other[ENHANCEMENT] Webhook Integration: Leading and trailing white space is now removed for the contents of url_file. #3363
other[ENHANCEMENT] Pushover Integration: Support options device and sound (sound was previously supported but undocumented). #3318
other[ENHANCEMENT] Pushover Integration: Support user_key_file and token_file for loading this secret from a file. #3200
other[ENHANCEMENT] Slack Integration: Support errors wrapped in successful (HTTP status code 200) responses. #3121
feature[ENHANCEMENT] API: Add CORS and Cache-Control HTTP headers to all version 2 API routes. #3195
other[ENHANCEMENT] UI: Receiver name is now visible as part of the alerts page. #3289
other[ENHANCEMENT] Templating: Better default text when using {{ .Annotations }} and {{ .Labels }}. #3256
feature[ENHANCEMENT] Templating: Introduced a new function trimSpace which removes leading and trailing white spaces. #3223
other[ENHANCEMENT] CLI: amtool silence query now supports the --id flag to query an individual silence. #3241
feature[ENHANCEMENT] Metrics: Introduced alertmanager_nflog_maintenance_total and alertmanager_nflog_maintenance_errors_total to monitor maintenance of the notification log. #3286
feature[ENHANCEMENT] Metrics: Introduced alertmanager_silences_maintenance_total and alertmanager_silences_maintenance_errors_total to monitor maintenance of silences. #3285
other[ENHANCEMENT] Logging: Log GroupKey and alerts on alert delivery when using debug mode. #3438
fix[BUGFIX] Configuration: Empty list of receivers and inhibit_rules would cause the alertmanager to crash. #3209
fix[BUGFIX] Templating: Fixed a race condition when using the title function. It is now race-safe. #3278
fix[BUGFIX] API: Fixed duplicate receiver names in the api/v2/receivers API endpoint. #3338
fix[BUGFIX] API: Attempting to delete a silence now returns the correct status code, 404 instead of 500. #3352
fix[BUGFIX] Clustering: Fixes a panic when tls_client_config is empty. #3443
security[SECURITY] Fix stored XSS via the /api/v1/alerts endpoint in the Alertmanager UI (CVE-2023-40577).
other[CHANGE] Change the default parse_mode value from MarkdownV2 to HTML for Telegram. #2981
other[CHANGE] Make api_url field optional for Telegram. #2981
other[CHANGE] Use CanonicalMIMEHeaderKey instead of TitleCasing for email headers. #3080
other[CHANGE] Reduce the number of notification logs broadcasted between peers by expiring them after (2 * repeat interval). #2982
feature[FEATURE] Add proxy_url support for OAuth2 in HTTP client configuration. #3010
other[FEATURE] Reload TLS certificate and key from disk when updated. #3168
feature[FEATURE] Add Discord integration. #2948
feature[FEATURE] Add Webex integration. #3132
feature[ENHANCEMENT] Add --web.systemd-socket flag to systemd socket activation listeners instead of port listeners (Linux only). #3140
feature[ENHANCEMENT] Add enable_http2 support in HTTP client configuration. #3010
feature[ENHANCEMENT] Add min_version support to select the minimum TLS version in HTTP client configuration. #3010
feature[ENHANCEMENT] Add max_version support to select the maximum TLS version in HTTP client configuration. #3168
other[ENHANCEMENT] Emit warning logs when truncating messages in notifications. #3145
feature[ENHANCEMENT] Add --data.maintenance-interval flag to define the interval between the garbage collection and snapshotting to disk of the silences and the notification logs. #2849
other[ENHANCEMENT] Support HEAD method for the /-/healty and /-/ready endpoints. #3039
other[ENHANCEMENT] Truncate messages with the … ellipsis character instead of the 3-dots string .... #3072
feature[ENHANCEMENT] Add support for reading global and local SMTP passwords from files. #3038
feature[ENHANCEMENT] Add Location support to time intervals. #2782
feature[ENHANCEMENT] UI: Add 'Link' button to alerts in list. #2880
feature[ENHANCEMENT] Add the source field to the PagerDuty configuration. #3106
feature[ENHANCEMENT] Add support for reading PagerDuty routing and service keys from files. #3107
other[ENHANCEMENT] Log response details when notifications fail for Webhooks, Pushover and VictorOps. #3103
feature[ENHANCEMENT] UI: Allow to choose the first day of the week as Sunday or Monday. #3093
feature[ENHANCEMENT] Add support for reading VictorOps API key from file. #3111
other[ENHANCEMENT] Support templating for Opsgenie's responder type. #3060
fix[BUGFIX] Fail configuration loading if api_key and api_key_file are defined at the same time. #2910
fix[BUGFIX] Fix the alertmanager_alerts metric to avoid counting resolved alerts as active. Also added a new alertmanager_marked_alerts metric that retain the old behavior. #2943
fix[BUGFIX] Trim contents of Slack API URLs when reading from files. #2929
fix[BUGFIX] amtool: Avoid panic when the label value matcher is empty. #2968
fix[BUGFIX] Fail configuration loading if api_url is empty for OpsGenie. #2910
fix[BUGFIX] Fix email template for resolved notifications. #3166
fix[BUGFIX] Use the HTML template engine when the parse mode is HTML for Telegram. #3183