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Release v2.15.0
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@ -7,6 +7,159 @@ documentation before upgrading to a new release.
Released closed milestones can be found on [GitHub](https://github.com/Icinga/icinga2/milestones?state=closed).
## 2.15.0 (2025-06-18)
This Icinga 2 release is focused on adding Icinga 2 dependencies support to Icinga DB, but also includes a number
of bugfixes, enhancements and code quality improvements. Below is a summary of the most important changes, for the
complete list of issues and PRs, please see the [milestone on GitHub](https://github.com/Icinga/icinga2/issues?q=is%3Aclosed+milestone%3A2.15.0).
### Notes
Thanks to all contributors:
[ChrLau](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3AChrLau),
[Josef-Friedrich](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3AJosef-Friedrich),
[LordHepipud](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3ALordHepipud),
[OdyX](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3AOdyX),
[RincewindsHat](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3ARincewindsHat),
[SebastianOpeni](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3ASebastianOpeni),
[SpeedD3](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3ASpeedD3),
[Tqnsls](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3ATqnsls),
[botovq](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Abotovq),
[cycloon](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Acycloon),
[legioner0](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Alegioner0),
[legna-namor](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Alegna-namor),
[macdems](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Amacdems),
[mathiasaerts](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Amathiasaerts),
[mcodato](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Amcodato),
[n-rodriguez](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3An-rodriguez),
[netphantm](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Anetphantm),
[nicolasberens](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Anicolasberens),
[oldelvet](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Aoldelvet),
[peteeckel](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Apeteeckel),
[tbauriedel](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Atbauriedel),
[w1ll-i-code](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Aw1ll-i-code),
[ymartin-ovh](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+is%3Aclosed+milestone%3A2.15.0+author%3Aymartin-ovh)
### Breaking Changes
* API: Fix `/v1/objects/*` queries with `attrs` set to `[]` to return empty attributes instead of all of them. #8169
* Drop the undocumented `Checkable#process_check_result` and broken `System#track_parents` DSL functions. #10457
### Enhancements
* Gracefully disconnect all clients on shutdown and prevent from accepting new connections. #10460
* Icinga DB: Send data to Redis® exactly as they're stored in the database to avoid extra value-mapping routines by the Go daemon. #10452
* Add support for Icinga 2 dependencies in Icinga DB. #10290
* Take host/service reachability into account when computing its severity. #10399
* Rework the dependency cycle detection to efficiently handle large configs and provide better error messages. #10360
* Don't log next check timestamp in scientific notation. #10352
* Automatically remove child downtimes when removing parent downtime. #10345
* Ensure compatibility with Boost version up to v1.88. #10278 #10419
* Reject infinite performance data values. #10077
* Support `host_template` and `service_template` tags in `ElasticsearchWriter`. #10074
* Icinga DB: Support Redis® username authentication. #10102
* Cluster: Distribute host child objects (e.g. services, notifications, etc.) based on the host's name. #10161
* Icinga DB Check: Report an error if both Icinga DB instances are responsible in a HA setup. #10188
* Windows: upgrade build toolchain to Visual Studio 2022. #9747
### Bugfixes
* Core
* Use `Checkable#check_timeout` also for rescheduling remote checks. #10443
* Log: Don't unnecessarily buffer log messages that are going to be dropped anyway. #10177
* Don't loose perfdata counter (`c`) unit when normalizing performance data for Icinga DB. #10432
* Fix broken SELinux policy on Fedora ≥ 41 due to the new `/usr/sbin` to `/usr/bin` equivalence. #10429
* Don't load `Notification` objects before `User` and `UserGroup` objects to allow them to be referenced in notifications. #10427
* Ensure consistent DST handling across different platforms. #10422
* Fix Icinga 2 doesn't generate a core dump when it crashes with SIGABRT. #10416
* Don't process concurrent checks for the same checkable. #10372
* Don't process check results after the checker and API listener have been stopped. #10397
* Avoid zombie processes on plugin execution timeout on busy systems. #10375
* Properly restore the notification object state on `Recovery` notification. #10361
* Fix incorrectly dropped acknowledgement and recovery notifications. #10211
* Prevent checks from always being rescheduled outside the configured `check_period`. #10070
* Don't send reminder notifications after a `Custom` notification while `interval` is set to `0`. #7818
* Reset all signal handlers of child processes to their defaults before starting a plugin. #8011
* tests: Fix `FormatDateTime` test cases with invalid formats on macOS and all BSD-based systems. #10149
* Mark move constructor and assignment operator in `String` as `noexcept` to allow optimizations. #10353 #10365
* Cluster and API
* Fix an inverted condition in `ApiListener#IsHACluster()` that caused to always return `true` in a non-HA setup. #10417
* Don't silently accept authenticated JSON-RPC connections with no valid endpoint. #10415
* Sync `Notification#notified_problem_users` across the cluster to prevent lost recovery notifications. #10380
* Remove superfluous `)` from a HTTP request log message. #9966
* Disable TLS renegotiation (handshake on existing connection) on OpenBSD as well. #9943
* Log also the underlying error message when a HTTP request is closed with `No data received` by Icinga 2. #9928
* Fix a deadlock triggered by concurrent `/v1/actions/add-comment` and `/v1/actions/acknowledge-problem` requests on
the same checkable, as well as a crash that might occur when running perfectly timed `/v1/actions/add-comment`
and `/v1/actions/remove-comment` requests targeting the same comment. #9924
* Icinga DB
* Fix missing acknowledgement and flapping history entries due to a number overflow. #10467
* Send downtime `cancel_time` only if it is cancelled. #10379
* Send only the necessary data to the `icinga:stats` Redis® stream. #10359
* Remove a spin lock in `RedisConnection#Connect()` to avoid busy waiting. #10265
* Writers
* Serialize all required metrics before queueing them to a `WorkQueue`. #10420
* `OpenTsdbWriter`: Include checkable name in log messages to ease troubleshooting. #10009
* `OpenTsdbWriter`: Don't send custom empty tags. #7928
* `InfluxDBWriter`: Add missing closing quote in validation error message. #10174
### ITL
* Add `--maintenance_mode_state` (`$vmware_maintenance_mode_state`) argument to `vmware-esx-command` check command. #10435
* Add `-n` (`$load_procs_to_show$`) argument to `load` check command. #10426
* Add `--inode-perfdata` (`$disk_np_inode_perfdata$`) argument to `disk` check command. #10395
* Add `-r` (`$ssh_remote_version$`) and `-P` (`$ssh_remote_protocol$`) arguments to `ssh` check command. #10283
* Add `--unplugged_nics_state` (`$vmware_unplugged_nics_state$`) argument to `vmware-esx-soap-host-net` and `vmware-esx-soap-host-net-nic` check commands. #10261
* Add `-X` (`$proc_exclude_process$`) argument to `procs` check command. #10232
* Add `--dane` (`$ssl_cert_dane$`) argument to `ssl_cert` check command. #10196
* Fix `check_ssl_cert` deprecation warnings. #9758
* Fix `check_systemd` executable name add add all missing arguments. #10035
* Add `-M` (`$snmp_multiplier$` & `$snmpv3_multiplier$`) argument to `snmp` and `snmpv3` check commands. #9975
* Add `--continue-after-certificate` (`$http_certificate_continue$`) argument to `http` check command. #9974
* Add `--ignore-maximum-validity` (`$ssl_cert_ignore_maximum_validity$`) argument to `ssl_cert` check command. #10396
* Add `--maximum-validity` (`$ssl_cert_maximum_validity$`) argument to `ssl_cert` check command. #9881
* Add `--url` (`$ssl_cert_http_url$`) argument to `ssl_cert` check command. #9759
* Add `fuse.sshfs` and `fuse.*` (supported only by Monitoring Plugins) to the list of default disk exclude types. #9749
* Add `check_curl` check command. #9205
* Add the `--extra-opts` argument to various commands that support it. #8010
### Documentation
* Don't use `dnf config-manager` to configure Fedora repository and mention `icingadb-redis-selinux` package. #10479
* Update the outdated cold startup duration documentation to reflect the current behavior. #10446
* Indent second-level unordered lists with four spaces to correctly render them in the HTML documentation. #10441
* Add a reference to the check result state documentation from within the Advanced Topics section. #10421
* Improve the documentation of how to generate Icinga 2 core dumps. #10418
* Update Icinga 2 CLI output examples to match the current output. #10323
* Fix incorrect `ping_timeout` value in the `hostalive` check command documentation. #10069
### Code Quality
* Simplify deferred SSL shutdown in `ApiListener#NewClientHandlerInternal()`. #10301
* Don't unnecessarily shuffle configuration items during config load. #10008
* Sort config types by their load dependencies at namespace initialization time to save some round trips during config load. #10148
* Fix `livestatus` build error on macOS without unity builds. #10176
* Remove unused methods in `SharedObject` class. #10456
* Remove unused `ProcessingResult#NoCheckResult` enum value. #10444
* CMake: Drop all third-party cmake modules and use the ones shipped with CMake v3.8+. #10403
* CMake: Raise the minimum required policy to `3.8`. #10402 #10478
* CMake: Turn on `-Wsuggest-override` to warn about missing `override` specifiers. #10225 #10356
* Make `icinga::Empty` a constant to prevent accidental modifications. #10224
* Remove various unused methods in the `Registry` class. #10222
* Fix missing parent `std::atomic<T>` constructor call in our `Atomic<T>` wrapper class. #10215
* Drop unused `m_NextHeartbeat` member variable from `JsonRpcConnection`. #10208
* Enhance some of the validation error messages. #10201
* Don't allow `Type#GetLoadDependencies()` to return non-config object type dependencies. #10169
* Don't allow `Type#GetLoadDependencies()` to return a set of nullptr type dependencies. #10155
* Remove EOL distros detection code from `Utility::ReleaseHelper()` function. #10147
* Remove dead code in TLS `GetSignatureAlgorithm()` function. #9882
* Mark `Logger#GetSeverity()` as non-virtual to avoid unnecessary vtable lookups. #9851
* Remove unused `Stream#Peak()` method and unused `allow_partial` parameter from `Stream#Read()`. #9734 #9736
* Suppress compiler warnings in third-party libraries. #9732
* Fix various compiler warnings. #9731 #10442
* Reduce task function allocation overhead by using a per-thread created lambda in `WorkQueue`. #9575
* Remove redundant trailing empty lines and add missing newlines in some files. #7799
## 2.14.6 (2025-05-27)
This security release fixes a critical issue in the certificate renewal logic in Icinga 2, which

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Version: 2.14.0
Version: 2.15.0
Revision: 1