* [#6592](https://github.com/icinga/icinga2/issues/6592): Reloads seem to reset the check atempt count. Also notifications go missing shortly after a reload.
### Documentation
* [#6701](https://github.com/icinga/icinga2/issues/6701) (Documentation, PR): Add GitHub release tag to README
* [#6700](https://github.com/icinga/icinga2/issues/6700) (Documentation, PR): Enhance the addon chapter in the docs
* [#6699](https://github.com/icinga/icinga2/issues/6699) (Documentation, PR): Update to https://icinga.com/
* [#6692](https://github.com/icinga/icinga2/issues/6692) (Documentation, PR): Update release docs for Chocolatey
* [#6690](https://github.com/icinga/icinga2/issues/6690) (Documentation, PR): Extend 09-object-types.md with argument array
* [#6674](https://github.com/icinga/icinga2/issues/6674) (Documentation, PR): Add a note to the docs on \>2 endpoints in a zone
* Support for namespaces, details in [this blogpost](https://icinga.com/2018/09/17/icinga-2-dsl-feature-namespaces-coming-in-v2-10/)
* Only send acknowledgement notification to users notified about a problem before, thanks for sponsoring to the [Max-Planck-Institut for Marine Mikrobiologie](https://www.mpi-bremen.de)
* More child options for scheduled downtimes
* Performance improvements and fixes for the TLS connections inside cluster/REST API
* Better logging for HTTP requests and less verbose object creation (e.g. downtimes via Icinga Web 2 & REST API)
* New configuration path constants, e.g. ConfigDir
* Fixed problem with dependencies rescheduling parent checks too fast
* Fixed problem with logging in systemd and syslog
* Improved vim syntax highlighting
* [Technical concepts docs](https://icinga.com/docs/icinga2/latest/doc/19-technical-concepts/) update with config compiler and TLS network IO
### Enhancement
* [#6663](https://github.com/icinga/icinga2/issues/6663) (API, Log, PR): Silence config compiler logging for runtime created objects
* [#6657](https://github.com/icinga/icinga2/issues/6657) (API, Log, PR): Enable the HTTP request body debug log entry for release builds
* [#6595](https://github.com/icinga/icinga2/issues/6595) (API, Cluster, PR): Allow to configure anonymous clients limit inside the ApiListener object
* [#6532](https://github.com/icinga/icinga2/issues/6532) (Configuration, PR): Add child\_options to ScheduledDowntime
* [#6531](https://github.com/icinga/icinga2/issues/6531) (API, PR): Expose Zone\#all\_parents via API
* [#6527](https://github.com/icinga/icinga2/issues/6527) (Notifications, PR): Acknowledgment notifications should only be send if problem notification has been send
* [#6512](https://github.com/icinga/icinga2/issues/6512) (Cluster, PR): Refactor environment for API connections
* [#6511](https://github.com/icinga/icinga2/issues/6511) (Cluster, PR): ApiListener: Add support for dynamic port handling
* [#6509](https://github.com/icinga/icinga2/issues/6509) (Configuration, PR): Implement support for namespaces
* [#6508](https://github.com/icinga/icinga2/issues/6508) (Configuration, PR): Implement the Dictionary\#clear script function
* [#6506](https://github.com/icinga/icinga2/issues/6506) (PR): Improve path handling in cmake and daemon
* [#6460](https://github.com/icinga/icinga2/issues/6460) (Log, help wanted): Feature suggestion: Do not log warnings when env elements are undefined in CheckCommand objects
* [#6455](https://github.com/icinga/icinga2/issues/6455) (Log, PR): Log something when the Filelogger has been started
* [#6379](https://github.com/icinga/icinga2/issues/6379) (Configuration, PR): Throw config error when using global zones as parent
* [#6356](https://github.com/icinga/icinga2/issues/6356) (Log, PR): Fix logging under systemd
* [#6339](https://github.com/icinga/icinga2/issues/6339) (Log, help wanted): On systemd, icinga2 floods the system log, and this cannot simply be opted out of
* [#6110](https://github.com/icinga/icinga2/issues/6110) (Configuration, PR): Implement support for optionally specifying the 'var' keyword in 'for' loops
* [#6047](https://github.com/icinga/icinga2/issues/6047) (Notifications): Acknowledgment notifications should only be sent if the user already received a problem notification
* [#4282](https://github.com/icinga/icinga2/issues/4282) (API, Log): Icinga should log HTTP bodies for API requests
### Bug
* [#6658](https://github.com/icinga/icinga2/issues/6658) (API, PR): Ensure that HTTP/1.0 or 'Connection: close' headers are properly disconnecting the client
* [#6652](https://github.com/icinga/icinga2/issues/6652) (Plugins, PR): Fix check\_memory thresholds in 'used' mode
* [#6643](https://github.com/icinga/icinga2/issues/6643) (Check Execution, Notifications, PR): Fix that check\_timeout was used for Event/Notification commands too
* [#6639](https://github.com/icinga/icinga2/issues/6639) (Windows, PR): Ensure to \_unlink before renaming replay log on Windows
* [#6622](https://github.com/icinga/icinga2/issues/6622) (DB IDO, PR): Ensure to use UTC timestamps for IDO PgSQL cleanup queries
* [#6603](https://github.com/icinga/icinga2/issues/6603) (Check Execution, Cluster): CheckCommand 'icinga' seems to ignore retry interval via command\_endpoint
* [#6575](https://github.com/icinga/icinga2/issues/6575): LTO builds fail on Linux
* [#6566](https://github.com/icinga/icinga2/issues/6566) (Cluster): Master disconnects during signing process
* [#6546](https://github.com/icinga/icinga2/issues/6546) (API, CLI, PR): Overridden path constants not passed to config validation in /v1/config/stages API call
* [#6519](https://github.com/icinga/icinga2/issues/6519) (CLI, PR): Reset terminal on erroneous console exit
* [#6517](https://github.com/icinga/icinga2/issues/6517) (Cluster): Not all Endpoints can't reconnect due to "Client TLS handshake failed" error after "reload or restart"
* [#6514](https://github.com/icinga/icinga2/issues/6514) (API): API using "Connection: close" header results in infinite threads
* [#6507](https://github.com/icinga/icinga2/issues/6507) (Cluster): Variable name conflict in constants.conf / Problem with TLS verification, CN and Environment variable
* [#6503](https://github.com/icinga/icinga2/issues/6503) (Log, PR): Reduce the log level for missing env macros to debug
* [#6485](https://github.com/icinga/icinga2/issues/6485) (Log): Icinga logs discarding messages still as warning and not as notice
* [#6408](https://github.com/icinga/icinga2/issues/6408) (PR): ObjectLock\#Unlock\(\): don't reset m\_Object-\>m\_LockOwner too early
* [#6386](https://github.com/icinga/icinga2/issues/6386) (Configuration, PR): Fix that TimePeriod segments are not cleared on restart
* [#6382](https://github.com/icinga/icinga2/issues/6382) (CLI, help wanted): icinga2 console breaks the terminal on errors
* [#6313](https://github.com/icinga/icinga2/issues/6313) (Plugins, Windows, PR): Fix wrong calculation of check\_swap windows plugin
* [#6304](https://github.com/icinga/icinga2/issues/6304) (Configuration, Notifications): Timeout defined in NotificationCommand is ignored and uses check\_timeout
* [#5815](https://github.com/icinga/icinga2/issues/5815) (Plugins, Windows): swap-windows check delivers wrong result
* [#5375](https://github.com/icinga/icinga2/issues/5375) (Check Execution, PR): Parents who are non-active should not be rescheduled
* [#5052](https://github.com/icinga/icinga2/issues/5052) (Cluster, Windows): Replay log not working with Windows client
- TTL support for check results, pretty formatting for REST API queries
- TLS support for IDO PostgreSQL
- Improvements for check scheduling, concurrent checks with command endpoints, downtime notification handling, scheduled downtimes and memory handling with many API requests
### Enhancement
* [#6400](https://github.com/icinga/icinga2/issues/6400) (Plugins, Windows, PR): Enhance debug logging for check\_nscp\_api
* [#6236](https://github.com/icinga/icinga2/issues/6236) (DB IDO, PR): Add TLS support for DB IDO PostgreSQL feature
* [#6219](https://github.com/icinga/icinga2/issues/6219) (Elasticsearch, PR): Add support for Elasticsearch 6
* [#6211](https://github.com/icinga/icinga2/issues/6211) (DB IDO): IDO pgsql with TLS support
* [#6209](https://github.com/icinga/icinga2/issues/6209) (CLI, PR): Unify zone name settings in node setup/wizard; add connection-less mode for node setup
* [#6208](https://github.com/icinga/icinga2/issues/6208) (CLI): Add connection-less support for node setup CLI command
* [#5509](https://github.com/icinga/icinga2/issues/5509) (Cluster, wishlist): Add metrics about communication between endpoints
* [#5444](https://github.com/icinga/icinga2/issues/5444) (Cluster): Display endpoints in the second line of the ClusterCheckTask output
* [#5426](https://github.com/icinga/icinga2/issues/5426) (CLI, Configuration, PR): Add the ability to disable the conf.d inclusion through the node wizard
* [#5418](https://github.com/icinga/icinga2/issues/5418) (Plugins, Windows): Feature request: check\_perfmon.exe - Change name of counter in output
* [#4966](https://github.com/icinga/icinga2/issues/4966) (CLI, Cluster): Unify setting of master zones name
* [#4508](https://github.com/icinga/icinga2/issues/4508) (CLI): node wizard/setup: allow to disable conf.d inclusion
* [#3455](https://github.com/icinga/icinga2/issues/3455) (API, Log): startup.log in stage dir has no timestamps
* [#3245](https://github.com/icinga/icinga2/issues/3245) (CLI, help wanted, wishlist): Add option to Windows installer to add global zone during setup
* [#2287](https://github.com/icinga/icinga2/issues/2287) (help wanted, wishlist): Please support systemd startup notification
### Bug
* [#6429](https://github.com/icinga/icinga2/issues/6429) (PR): Make HttpServerConnection\#m\_DataHandlerMutex a boost::recursive\_mutex
* [#6428](https://github.com/icinga/icinga2/issues/6428) (API): Director kickstart wizard querying the API results in TLS stream disconnected infinite loop
* [#6411](https://github.com/icinga/icinga2/issues/6411) (Plugins, Windows, PR): Windows: Conform to the Plugin API spec for performance label quoting
* [#6407](https://github.com/icinga/icinga2/issues/6407) (Windows, PR): Fix wrong UOM in check\_uptime windows plugin
* [#6405](https://github.com/icinga/icinga2/issues/6405) (Windows, PR): TcpSocket\#Bind\(\): reuse socket addresses on Windows, too
* [#6403](https://github.com/icinga/icinga2/issues/6403) (API, PR): Conform to RFC for CRLF in HTTP requests
* [#6401](https://github.com/icinga/icinga2/issues/6401) (Elasticsearch, InfluxDB, PR): Fix connection error handling in Elasticsearch and InfluxDB features
* [#6383](https://github.com/icinga/icinga2/issues/6383) (API, CLI, PR): HttpRequest\#ParseBody\(\): indicate success on complete body
* [#6378](https://github.com/icinga/icinga2/issues/6378) (Windows): Analyze Windows reload behaviour
* [#6371](https://github.com/icinga/icinga2/issues/6371) (API, Cluster, PR): ApiListener\#NewClientHandlerInternal\(\): Explicitly close the TLS stream on any failure
* [#6368](https://github.com/icinga/icinga2/issues/6368) (CLI, PR): Fix program option parsing
* [#6365](https://github.com/icinga/icinga2/issues/6365) (CLI): Different behavior between `icinga2 -V` and `icinga2 --version`
* [#6355](https://github.com/icinga/icinga2/issues/6355) (API): HTTP header size too low: Long URLs and session cookies cause bad requests
* [#6354](https://github.com/icinga/icinga2/issues/6354) (Elasticsearch): ElasticsearchWriter not writing to ES
* [#6336](https://github.com/icinga/icinga2/issues/6336) (Log, PR): Fix unnecessary blank in log message
* [#6324](https://github.com/icinga/icinga2/issues/6324) (Crash, PR): Ensure that password hash generation from OpenSSL is atomic
* [#6319](https://github.com/icinga/icinga2/issues/6319) (Windows): Windows service restart fails and config validate runs forever
* [#6297](https://github.com/icinga/icinga2/issues/6297) (Cluster, PR): Execute event commands only on actively checked host/service objects in an HA zone
* [#6294](https://github.com/icinga/icinga2/issues/6294) (API, Configuration, PR): Ensure that group memberships on API object creation are unique
* [#6292](https://github.com/icinga/icinga2/issues/6292) (Notifications, PR): Fix problem with reminder notifications if the checkable is flapping
* [#6290](https://github.com/icinga/icinga2/issues/6290) (OpenTSDB, PR): Fixed opentsdb metric name with colon chars
* [#6282](https://github.com/icinga/icinga2/issues/6282) (Configuration): Issue when using excludes in TimePeriod Objects
* [#6279](https://github.com/icinga/icinga2/issues/6279) (Crash): segfault with sha1\_block\_data\_order\_avx of libcrypto
* [#6255](https://github.com/icinga/icinga2/issues/6255) (Configuration): On debian based systems /etc/default/icinga2 is not read/used
* [#6239](https://github.com/icinga/icinga2/issues/6239) (Plugins, Windows, PR): Fix Windows check\_memory rounding
* [#6231](https://github.com/icinga/icinga2/issues/6231) (Notifications): icinga2.8 - Notifications are sent even in downtime
* [#6218](https://github.com/icinga/icinga2/issues/6218) (PR): attempt to fix issue \#5277
* [#6217](https://github.com/icinga/icinga2/issues/6217) (Check Execution, PR): Fix check behavior on restart
* [#6204](https://github.com/icinga/icinga2/issues/6204) (API, PR): API: Check if objects exists and return proper error message
* [#6195](https://github.com/icinga/icinga2/issues/6195) (API, Crash, PR): Fix crash in remote api console
* [#6193](https://github.com/icinga/icinga2/issues/6193) (Crash, Graylog, PR): GelfWriter: Fix crash on invalid performance data metrics
* [#6184](https://github.com/icinga/icinga2/issues/6184) (API): debug console with API connection sometimes hangs since 2.8.2
* [#6125](https://github.com/icinga/icinga2/issues/6125) (Configuration, PR): Fix description of the NotificationComponent in notification.conf
* [#6077](https://github.com/icinga/icinga2/issues/6077) (API, PR): Allow to pass raw performance data in 'process-check-result' API action
* [#6057](https://github.com/icinga/icinga2/issues/6057) (Notifications): Icinga2 sends notifications without logging about it and despite having a downtime
* [#6020](https://github.com/icinga/icinga2/issues/6020) (CLI, PR): Fix crash when running 'icinga2 console' without HOME environment variable
* [#6019](https://github.com/icinga/icinga2/issues/6019): icinga2 console -r crashes when run without a HOME environment variable
* [#6016](https://github.com/icinga/icinga2/issues/6016) (Notifications, PR): Check notification state filters for problems only, not for Custom, etc.
* [#5988](https://github.com/icinga/icinga2/issues/5988) (Check Execution, Cluster, PR): Fix concurrent checks limit while using command\_endpoint
* [#5964](https://github.com/icinga/icinga2/issues/5964) (Metrics, OpenTSDB, PR): OpenTSDB writer - Fix function for escaping host tag chars.
* [#5963](https://github.com/icinga/icinga2/issues/5963) (Metrics, OpenTSDB): OpenTSDB writer is escaping wrong chars for host names.
* [#5952](https://github.com/icinga/icinga2/issues/5952) (Notifications): Custom notifications are filtered by object state
* [#5763](https://github.com/icinga/icinga2/issues/5763) (API): "icinga2 api setup" should explicitly set the NodeName constant in constants.conf
* [#5753](https://github.com/icinga/icinga2/issues/5753) (API, Cluster, Metrics, PR): Fix that RingBuffer does not get updated and add metrics about communication between endpoints
* [#5718](https://github.com/icinga/icinga2/issues/5718) (API, PR): API: Fix http status codes
* [#5550](https://github.com/icinga/icinga2/issues/5550) (API): Verify error codes and returned log messages in API actions
* [#5277](https://github.com/icinga/icinga2/issues/5277) (Notifications): Flexible downtime is expired at end\_time, not trigger\_time+duration
* [#5095](https://github.com/icinga/icinga2/issues/5095) (API): Wrong HTTP status code when API request fails
* [#5083](https://github.com/icinga/icinga2/issues/5083) (Check Execution): Initial checks are not executed immediately
* [#4786](https://github.com/icinga/icinga2/issues/4786) (API): API: Command process-check-result fails if it contains performance data
* [#4785](https://github.com/icinga/icinga2/issues/4785) (Compat): Semicolons in plugin output are converted to colon
* [#4732](https://github.com/icinga/icinga2/issues/4732) (API, Configuration): Duplicate groups allowed when creating host
* [#4436](https://github.com/icinga/icinga2/issues/4436) (Check Execution): New objects not scheduled to check immediately
* [#4272](https://github.com/icinga/icinga2/issues/4272) (Cluster, Configuration): Duplicating downtime from ScheduledDowntime object on each restart
* [#3431](https://github.com/icinga/icinga2/issues/3431) (Cluster): Eventhandler trigger on all endpoints in high available zone
### ITL
* [#6389](https://github.com/icinga/icinga2/issues/6389) (ITL, PR): New ITL command nscp-local-tasksched
* [#6216](https://github.com/icinga/icinga2/issues/6216) (Documentation): Volatile service explanation
* [#6180](https://github.com/icinga/icinga2/issues/6180) (Documentation, PR): Doc: fixed wrong information about defaulting
* [#6128](https://github.com/icinga/icinga2/issues/6128) (Documentation, PR): Adding documentation for configurable global zones during setup
* [#6067](https://github.com/icinga/icinga2/issues/6067) (Documentation, Windows, PR): Improve Windows builds and testing
* [#6022](https://github.com/icinga/icinga2/issues/6022) (Configuration, Documentation, PR): Update default config and documentation for the "library" keyword
* [#6018](https://github.com/icinga/icinga2/issues/6018) (Documentation): Move init configuration from getting-started
* [#6000](https://github.com/icinga/icinga2/issues/6000) (Documentation, PR): Add newline to COPYING to fix Github license detection
* [#6113](https://github.com/icinga/icinga2/issues/6113) (Tests, PR): appveyor: Disable artifacts until we use them
* [#6107](https://github.com/icinga/icinga2/issues/6107) (code-quality, PR): Allow MYSQL\_LIB to be specified by ENV variable
* [#6105](https://github.com/icinga/icinga2/issues/6105) (Tests): Snapshot builds fail on livestatus tests
* [#6098](https://github.com/icinga/icinga2/issues/6098) (API, code-quality, PR): Clean up CORS implementation
* [#6085](https://github.com/icinga/icinga2/issues/6085) (Cluster, Crash, PR): Fix crash with anonymous clients on certificate signing request and storing sent bytes
* [#6083](https://github.com/icinga/icinga2/issues/6083) (Log, code-quality, PR): Fix wrong type logging in ConfigItem::Commit
* [#6082](https://github.com/icinga/icinga2/issues/6082) (Installation, Packages): PID file removed after reload
* [#5998](https://github.com/icinga/icinga2/issues/5998) (code-quality, PR): Build all remaining libraries as object libraries
* [#5997](https://github.com/icinga/icinga2/issues/5997) (PR): Use gcc-ar and gcc-ranlib when building with -flto
* [#5994](https://github.com/icinga/icinga2/issues/5994) (InfluxDB, PR): InfluxDBWriter: Fix macro in template
* [#5993](https://github.com/icinga/icinga2/issues/5993) (code-quality, PR): Use CMake object libraries for our libs
* [#5992](https://github.com/icinga/icinga2/issues/5992) (code-quality, PR): Remove unused includes
* [#5984](https://github.com/icinga/icinga2/issues/5984) (DB IDO, PR): Fix missing static libraries for DB IDO
* [#5983](https://github.com/icinga/icinga2/issues/5983) (code-quality, PR): Use initializer lists for arrays and dictionaries
* [#5980](https://github.com/icinga/icinga2/issues/5980) (code-quality, PR): Explicitly pass 1 or 0 for notification filters in DB IDO
* [#5974](https://github.com/icinga/icinga2/issues/5974) (PR): Fix non-unity builds with the icinga check
* [#5971](https://github.com/icinga/icinga2/issues/5971) (code-quality, PR): Remove libdemo and libhello
* [#5970](https://github.com/icinga/icinga2/issues/5970) (code-quality, PR): Allocate ConfigItemBuilder objects on the stack
* [#5969](https://github.com/icinga/icinga2/issues/5969) (code-quality, PR): Remove the WorkQueue::m\_StatsMutex instance variable
* [#5968](https://github.com/icinga/icinga2/issues/5968) (code-quality, PR): Update the RingBuffer class to use a regular mutex instead of ObjectLock
* [#5967](https://github.com/icinga/icinga2/issues/5967) (code-quality, PR): Avoid accessing attributes for validators where not necessary
* [#5965](https://github.com/icinga/icinga2/issues/5965) (code-quality, PR): Avoid unnecessary casts in the JSON encoder
* [#5961](https://github.com/icinga/icinga2/issues/5961) (PR): Fix macro warning from the icinga check
* [#5960](https://github.com/icinga/icinga2/issues/5960): Macro warning from the icinga check
* [#5957](https://github.com/icinga/icinga2/issues/5957) (code-quality, PR): Change a bunch more copyright headers for 2018
* [#5955](https://github.com/icinga/icinga2/issues/5955) (Configuration, code-quality, PR): Avoid mutex contention in the config parser
* [#5946](https://github.com/icinga/icinga2/issues/5946) (code-quality, PR): Use clang-tidy to add some more C++11 features
* [#5945](https://github.com/icinga/icinga2/issues/5945) (code-quality, PR): Fix incorrect indentation for code generated by mkclass
* [#5944](https://github.com/icinga/icinga2/issues/5944) (code-quality, PR): Add the final keyword to classes
* [#5939](https://github.com/icinga/icinga2/issues/5939) (PR): Build fix for Debian wheezy
* [#5937](https://github.com/icinga/icinga2/issues/5937) (code-quality, PR): Remove inline methods and use explicit template instantiation to minimize the number of weak symbols
* [#5936](https://github.com/icinga/icinga2/issues/5936) (code-quality, PR): Clean up source lists in the CMakeLists.txt files
* [#5935](https://github.com/icinga/icinga2/issues/5935) (code-quality, PR): Implement support for precompiled headers
* [#5934](https://github.com/icinga/icinga2/issues/5934) (code-quality, PR): Add more include/library paths for MySQL and PostgreSQL
* [#5933](https://github.com/icinga/icinga2/issues/5933) (code-quality, PR): Change copyright headers for 2018
* [#5932](https://github.com/icinga/icinga2/issues/5932) (code-quality, PR): Fix copyright header in cli/troubleshootcommand.hpp
* [#5931](https://github.com/icinga/icinga2/issues/5931) (code-quality, PR): Improve detection for linker flags
* [#5930](https://github.com/icinga/icinga2/issues/5930) (code-quality, PR): Replace boost::function with std::function
* [#5929](https://github.com/icinga/icinga2/issues/5929) (code-quality, PR): Get rid of boost::assign::list\_of in mkclass
* [#5927](https://github.com/icinga/icinga2/issues/5927) (code-quality, PR): Build libraries as static libraries
* [#5909](https://github.com/icinga/icinga2/issues/5909) (code-quality, PR): WIP: Improve build times
* [#5903](https://github.com/icinga/icinga2/issues/5903) (code-quality, PR): Cleanup CompatUtility class and features
* [#5831](https://github.com/icinga/icinga2/issues/5831) (Check Execution, Configuration): No checks were launched on snapshot version 2.8.0.71 \(RHEL6\)
* [#5827](https://github.com/icinga/icinga2/issues/5827) (code-quality, PR): Replace StatsFunction with Function
* [#5825](https://github.com/icinga/icinga2/issues/5825) (code-quality, PR): Replace boost::assign::list\_of with initializer lists
* [#5824](https://github.com/icinga/icinga2/issues/5824) (code-quality, PR): Replace a few Boost features with equivalent C++11 features
* [#5706](https://github.com/icinga/icinga2/issues/5706) (Plugins, Windows): nscp\_api - cannot use check\_cpu with "time" argument used multiple times
* [#5838](https://github.com/icinga/icinga2/issues/5838) (Documentation, PR): services.conf has also be moved to zones.d/global-templates/
* [#5797](https://github.com/icinga/icinga2/issues/5797) (Documentation): Document the ignore\_on\_error parameter for CreateObjectHandler::HandleRequest
* [#5610](https://github.com/icinga/icinga2/issues/5610) (Documentation, ITL): http check doesn't map the critical ssl certificate age option
Most of these have been brought to our attention by the community and we are very thankful for that. Special thanks to Michael H., Julian and Michael O., who helped by reporting and assisting us in fixing security bugs. CVEs have also been requested for these issues, they are as follows: CVE-2017-16933, CVE-2018-6532, CVE-2018-6533, CVE-2018-6534, CVE-2018-6535, CVE-2018-6536.
### Enhancement
* [#5715](https://github.com/icinga/icinga2/issues/5715) (API, PR): Hash API password and comparison
### Bug
* [#6153](https://github.com/icinga/icinga2/issues/6153) (API, PR): Improve error handling for empty packages in /v1/config/packages
* [#6147](https://github.com/icinga/icinga2/issues/6147) (PR): Fix incorrect argument type for JsonRpc::SendMessage
* [#6146](https://github.com/icinga/icinga2/issues/6146) (PR): Ensure that SetCorked\(\) works properly
* [#5991](https://github.com/icinga/icinga2/issues/5991): Partial privilege escalation via PID file manipulation
* [#5987](https://github.com/icinga/icinga2/issues/5987) (Elasticsearch, InfluxDB, Metrics): InfluxDBWriter and ElasticsearchWriter stop writing to HTTP API
* [#5793](https://github.com/icinga/icinga2/issues/5793): CVE-2017-16933: root privilege escalation via prepare-dirs \(init script and systemd service file\)
* [#5760](https://github.com/icinga/icinga2/issues/5760) (Crash, PR): Fix incorrect socket handling for the HTTP client
### Documentation
* [#6172](https://github.com/icinga/icinga2/issues/6172) (Documentation, PR): Docs: Add a note to only query the NSClient++ API from the local Icinga 2 client
* [#6111](https://github.com/icinga/icinga2/issues/6111) (Documentation, PR): Add Upgrading to Icinga 2.8.2 chapter
* [#6089](https://github.com/icinga/icinga2/issues/6089) (Documentation, PR): Docs: Fix bracket in notification example
* [#6086](https://github.com/icinga/icinga2/issues/6086) (Documentation, PR): Upgrading: Make it more clear that the Director script is just an example
* [#6075](https://github.com/icinga/icinga2/issues/6075) (Documentation, PR): Explain how to register functions in the global scope
* [#6014](https://github.com/icinga/icinga2/issues/6014) (Documentation, PR): Docs: Add IDO DB tuning tips
* [#6006](https://github.com/icinga/icinga2/issues/6006) (Documentation, PR): Fix wrong nscp-local include in the docs
### Support
* [#6148](https://github.com/icinga/icinga2/issues/6148) (PR): Fix ApiUser unit test
* [#5716](https://github.com/icinga/icinga2/issues/5716) (Livestatus, PR): add bogus zero reply in livestatus when aggregate and non matching filter
* [#5626](https://github.com/icinga/icinga2/issues/5626) (Livestatus, help wanted): Empty result set with non-matching filters in Livestatus stats query
* [#5942](https://github.com/icinga/icinga2/issues/5942) (Documentation, PR): Add some technical insights into the cluster-zone health check and log lag
* [#5922](https://github.com/icinga/icinga2/issues/5922) (Documentation, PR): Fix link format in documentation
* [#5918](https://github.com/icinga/icinga2/issues/5918) (Documentation, PR): Fix typo in SELinux documentation
* [#5911](https://github.com/icinga/icinga2/issues/5911) (Documentation, PR): Update ElasticsearchWriter docs for 5.x support only
* [#5866](https://github.com/icinga/icinga2/issues/5866) (Documentation, PR): Remove redundant FreeBSD from restart instructions and add openSUSE
* [#5864](https://github.com/icinga/icinga2/issues/5864) (Documentation, PR): Add missing initdb to PostgreSQL documentation
* [#5682](https://github.com/icinga/icinga2/issues/5682) (Cluster, Configuration, PR): Implement support for migrating certificates to /var/lib/icinga2/certs
* [#5681](https://github.com/icinga/icinga2/issues/5681) (CLI, Cluster, Windows): Update Windows wizard from enhanced CSR signing \(optional ticket\)
* [#5679](https://github.com/icinga/icinga2/issues/5679) (CLI, Cluster): Migration path for improved certificate signing in the cluster
* [#5602](https://github.com/icinga/icinga2/issues/5602) (Windows, PR): Add windows process elevation and log message if user does not have privileges to read/write files
* [#5587](https://github.com/icinga/icinga2/issues/5587) (Log, PR): SyslogLogger: Implement option to set syslog facility
* [#5580](https://github.com/icinga/icinga2/issues/5580) (Configuration, PR): Implement new script functions: path\_exists, glob and glob\_recursive
* [#5571](https://github.com/icinga/icinga2/issues/5571) (CLI, Cluster, PR): Implement support for forwarding certificate signing requests in the cluster
* [#5569](https://github.com/icinga/icinga2/issues/5569) (Metrics, PR): ElasticWriter: Add basic auth and TLS support for Elasticsearch behind an HTTP proxy
* [#5554](https://github.com/icinga/icinga2/issues/5554) (API, Cluster, PR): Add subjectAltName extension for all non-CA certificates
* [#5534](https://github.com/icinga/icinga2/issues/5534) (Configuration, PR): Implement get\_services\(host {name,object}\) and add host object support for get\_service\(\)
* [#4769](https://github.com/icinga/icinga2/issues/4769) (API): Validate and activate config package stages without triggering a reload
* [#4326](https://github.com/icinga/icinga2/issues/4326) (API): API should provide CORS Header
* [#3891](https://github.com/icinga/icinga2/issues/3891) (Plugins): Add option to specify ServiceDescription instead of ServiceName with check\_service.exe
* [#5728](https://github.com/icinga/icinga2/issues/5728) (Plugins, Windows, PR): Fix check\_service not working with names
* [#5720](https://github.com/icinga/icinga2/issues/5720) (Check Execution): Flapping tests and bugs
* [#5710](https://github.com/icinga/icinga2/issues/5710) (CLI, Configuration, PR): Include default global zones during node wizard/setup
* [#5707](https://github.com/icinga/icinga2/issues/5707) (CLI): node wizard/setup override zones.conf but do not include default global zones \(director-global, global-templates\)
* [#5690](https://github.com/icinga/icinga2/issues/5690) (Documentation): Improve documentation of cipher\_list
* [#5688](https://github.com/icinga/icinga2/issues/5688) (Documentation, PR): Fixed typos and punctuation
* [#5680](https://github.com/icinga/icinga2/issues/5680) (Documentation): Review documentation for enhanced CSR signing and update migration chapter for 2.8
* [#5677](https://github.com/icinga/icinga2/issues/5677) (Documentation, PR): Fix typo in threshold syntax documentation
* [#5668](https://github.com/icinga/icinga2/issues/5668) (Documentation, PR): Enhance Monitoring Basics in the documentation
* [#5667](https://github.com/icinga/icinga2/issues/5667) (Documentation): Explain which values can be used for set\_if in command arguments
* [#5666](https://github.com/icinga/icinga2/issues/5666) (Documentation): Explain the notification with users defined on host/service in a dedicated docs chapter
* [#5665](https://github.com/icinga/icinga2/issues/5665) (Documentation): Better explanations and iteration details for "apply for" documentation
* [#5664](https://github.com/icinga/icinga2/issues/5664) (Documentation): Add usage examples to the "apply" chapter based on custom attribute values
* [#5663](https://github.com/icinga/icinga2/issues/5663) (Documentation): Explain custom attribute value types and nested dictionaries
* [#5662](https://github.com/icinga/icinga2/issues/5662) (Documentation): Explain how to use a different host check command
* [#5655](https://github.com/icinga/icinga2/issues/5655) (Documentation, PR): Enhance documentation with more details on value types for object attributes
* [#5576](https://github.com/icinga/icinga2/issues/5576) (Documentation, PR): Fixed downtime example in documentation
* [#5568](https://github.com/icinga/icinga2/issues/5568) (Documentation, PR): Add documentation for multi-line plugin output for API actions
* [#5511](https://github.com/icinga/icinga2/issues/5511) (Cluster, Documentation, Windows): SSL errors with leading zeros in certificate serials \(created \< v2.4\) with OpenSSL 1.1.0
* [#5379](https://github.com/icinga/icinga2/issues/5379) (Documentation, PR): Set shell prompt for commands to be \#
* [#5186](https://github.com/icinga/icinga2/issues/5186) (Documentation): Document boolean values understood by set\_if
* [#5060](https://github.com/icinga/icinga2/issues/5060) (Documentation): Missing documentation for macro\(\)
* [#4015](https://github.com/icinga/icinga2/issues/4015) (Documentation): Add documentation for host state calculation from plugin exit codes
* [#5765](https://github.com/icinga/icinga2/issues/5765) (Configuration, PR): Fix default configuration example for ElasticsearchWriter
* [#5739](https://github.com/icinga/icinga2/issues/5739) (Metrics, PR): Rename ElasticWriter to ElasticsearchWriter
* [#5732](https://github.com/icinga/icinga2/issues/5732) (Check Execution, DB IDO, PR): Fix flapping calculation and events
* [#5730](https://github.com/icinga/icinga2/issues/5730) (PR): Add missing trims to GetMasterHostPort and remove Convert.ToString from variables that are strings already
* [#5719](https://github.com/icinga/icinga2/issues/5719) (Cluster, Installation, Windows, PR): Update Windows Wizard for 2.8 and new signing methods
* [#5686](https://github.com/icinga/icinga2/issues/5686) (Log): Ugly stacktrace with mismatching versions in cluster
* [#5643](https://github.com/icinga/icinga2/issues/5643) (PR): Fix debug builds on Apple Clang 9.0.0 \(macOS High Sierra\)
* [#5637](https://github.com/icinga/icinga2/issues/5637) (InfluxDB, PR): Fix unnecessary String\(\) casts in InfluxdbWriter
* [#5629](https://github.com/icinga/icinga2/issues/5629) (InfluxDB, Metrics, code-quality): Remove the unnecessary String\(\) casts in influxdbwriter.cpp
* [#5624](https://github.com/icinga/icinga2/issues/5624) (PR): Fixed missing include statement in unit test
* [#5619](https://github.com/icinga/icinga2/issues/5619) (Packages, PR): Exit early in changelog.py if GitHub API fetch fails
* [#5616](https://github.com/icinga/icinga2/issues/5616) (PR): Fix a build warning
* [#5608](https://github.com/icinga/icinga2/issues/5608) (CLI, Cluster, PR): Fix certificate paths for installers
* [#5604](https://github.com/icinga/icinga2/issues/5604) (Packages, PR): Remove the icinga2-classicui-package and update documentation
* [#5601](https://github.com/icinga/icinga2/issues/5601) (Installation, Packages, PR): Ensure that the cache directory always is set and add a note to upgrading docs
* [#5563](https://github.com/icinga/icinga2/issues/5563) (Cluster, PR): Implement additional logging for the JsonRpc class
* [#5545](https://github.com/icinga/icinga2/issues/5545) (Installation, Windows, PR): Add Edit button to Windows Setup Wizard
* [#5488](https://github.com/icinga/icinga2/issues/5488) (code-quality, PR): Implement additional functions for printing values with LLDB/GDB
* [#5653](https://github.com/icinga/icinga2/issues/5653) (Documentation, PR): Docs: Fix default value for `snmp\_nocrypt` for Manubulon CheckCommand definitions
* [#5652](https://github.com/icinga/icinga2/issues/5652) (Documentation, PR): Docs: Fix missing default value for cluster-zone checks
* [#5632](https://github.com/icinga/icinga2/issues/5632) (Documentation, PR): Docs: Mention SELinux in Getting Started chapter
* [#5537](https://github.com/icinga/icinga2/issues/5537) (Plugins): check\_nscp\_api: support spaces in query arguments
* [#5524](https://github.com/icinga/icinga2/issues/5524) (Cluster, PR): Change FIFO::Optimize\(\) frequency for large messages
* [#5513](https://github.com/icinga/icinga2/issues/5513) (Cluster): Node in Cluster loses connection
* [#5504](https://github.com/icinga/icinga2/issues/5504) (InfluxDB, PR): Fix TLS Race Connecting to InfluxDB
* [#5503](https://github.com/icinga/icinga2/issues/5503) (Livestatus, PR): Fix grouping for Livestatus queries with 'Stats'
* [#5502](https://github.com/icinga/icinga2/issues/5502) (Notifications, PR): Fix duplicate variable in notification scripts
* [#5495](https://github.com/icinga/icinga2/issues/5495) (Notifications, PR): Fix parameter order for AcknowledgeSvcProblem / AcknowledgeHostProblem / apiactions:AcknowledgeProblem
* [#5492](https://github.com/icinga/icinga2/issues/5492) (DB IDO): Comments may not be removed correctly
* [#5484](https://github.com/icinga/icinga2/issues/5484) (Log): Timestamp comparison of config files logs a wrong message
* [#5483](https://github.com/icinga/icinga2/issues/5483) (DB IDO, PR): Fix config validation for DB IDO categories 'DbCatEverything'
* [#5469](https://github.com/icinga/icinga2/issues/5469) (InfluxDB): Failure to connect to InfluxDB increases CPU utilisation by 100% for every failure
* [#5466](https://github.com/icinga/icinga2/issues/5466) (DB IDO, PR): DB IDO: Fix host's unreachable state in history tables
* [#5460](https://github.com/icinga/icinga2/issues/5460) (InfluxDB): Icinga 2.7 InfluxdbWriter fails to write metrics to InfluxDB over HTTPS
* [#5458](https://github.com/icinga/icinga2/issues/5458) (DB IDO): IDO donwtimehistory records orphaned from scheduleddowntime records following restart
* [#5405](https://github.com/icinga/icinga2/issues/5405) (DB IDO): IDO statehistory table does not show hosts going to "UNREACHABLE" state.
* [#5078](https://github.com/icinga/icinga2/issues/5078) (Compat, Livestatus): Livestatus hostsbygroup and servicesbyhostgroup do not work
* [#5496](https://github.com/icinga/icinga2/issues/5496) (Documentation, PR): Docs: Update examples for match/regex/cidr\_match and mode for arrays \(Match{All,Any}\)
* [#5476](https://github.com/icinga/icinga2/issues/5476) (Documentation, PR): Docs: Fix ITL chapter TOC; add introduction with mini TOC
* [#5475](https://github.com/icinga/icinga2/issues/5475) (Documentation, PR): Docs: Add a note on required configuration updates for new notification scripts in v2.7.0
* [#5529](https://github.com/icinga/icinga2/issues/5529) (Log, PR): Change two more loglines for checkables so checkable is quoted
* [#5528](https://github.com/icinga/icinga2/issues/5528) (Log, PR): Change loglines for checkables so checkable is quoted
* [#5501](https://github.com/icinga/icinga2/issues/5501) (Installation, Packages, PR): SELinux: fixes for 2.7.0
* [#5479](https://github.com/icinga/icinga2/issues/5479) (Packages): Icinga2 2.7.0 requires SELinux boolean icinga2\_can\_connect\_all on CentOS 7 even for default port
* [#5477](https://github.com/icinga/icinga2/issues/5477) (Installation, Packages, PR): Systemd: Add DefaultTasksMax=infinity to service file
* [#5392](https://github.com/icinga/icinga2/issues/5392) (Packages, PR): Ensure the cache directory exists
* [#4918](https://github.com/icinga/icinga2/issues/4918) (Packages): cgroup: fork rejected by pids controller in /system.slice/icinga2.service
* [#4414](https://github.com/icinga/icinga2/issues/4414) (Packages): /usr/lib/icinga2/prepare-dirs does not create /var/cache/icinga2
* New mail notification scripts. Please note that this requires a configuration update to NotificationCommand objects, Notification apply rules for specific settings and of course the notification scripts. More can be found [here](https://github.com/Icinga/icinga2/pull/5475).
* [#5295](https://github.com/icinga/icinga2/issues/5295) (Notifications, PR): Fix missing apostrophe in notification log
* [#5292](https://github.com/icinga/icinga2/issues/5292) (PR): Build fix for OpenSSL 0.9.8 and stack\_st\_X509\_EXTENSION
* [#5288](https://github.com/icinga/icinga2/issues/5288) (Configuration): Hostgroup using assign for Host with groups = null segfault
* [#5278](https://github.com/icinga/icinga2/issues/5278) (PR): Build fix for I2\_LEAK\_DEBUG
* [#5262](https://github.com/icinga/icinga2/issues/5262) (Graylog, PR): Fix performance data processing in GelfWriter feature
* [#5259](https://github.com/icinga/icinga2/issues/5259) (API, PR): Don't allow acknowledgement expire timestamps in the past
* [#5256](https://github.com/icinga/icinga2/issues/5256) (Configuration): Config type changes break object serialization \(JsonEncode\)
* [#5250](https://github.com/icinga/icinga2/issues/5250) (API, Compat): Acknowledgement expire time in the past
* [#5245](https://github.com/icinga/icinga2/issues/5245) (Notifications, PR): Fix that host downtimes might be triggered even if their state is Up
* [#5224](https://github.com/icinga/icinga2/issues/5224) (Configuration, Notifications): Icinga sends notifications even though a Downtime object exists
* [#5223](https://github.com/icinga/icinga2/issues/5223) (Plugins, Windows): Wrong return Code for Windows ICMP
* [#5219](https://github.com/icinga/icinga2/issues/5219) (InfluxDB): InfluxDBWriter feature might block and leak memory
* [#5211](https://github.com/icinga/icinga2/issues/5211) (API, Cluster): Config received is always accepted by client even if own config is newer
* [#5194](https://github.com/icinga/icinga2/issues/5194) (API, CLI): No subjectAltName in Icinga CA created CSRs
* [#5168](https://github.com/icinga/icinga2/issues/5168) (Windows): include files from other volume/partition
* [#5146](https://github.com/icinga/icinga2/issues/5146) (Configuration): parsing of scheduled downtime object allow typing range instead of ranges
* [#5132](https://github.com/icinga/icinga2/issues/5132) (Graphite): GraphiteWriter can slow down Icinga's check result processing
* [#5043](https://github.com/icinga/icinga2/issues/5043) (API): API POST request with 'attrs' as array returns bad\_cast error
* [#5040](https://github.com/icinga/icinga2/issues/5040) (Cluster): CRL loading fails due to incorrect return code check
* [#5033](https://github.com/icinga/icinga2/issues/5033) (DB IDO): Flexible downtimes which are not triggered must not update DB IDO's actual\_end\_time in downtimehistory table
* [#4984](https://github.com/icinga/icinga2/issues/4984) (API): Wrong response type when unauthorized
* [#4983](https://github.com/icinga/icinga2/issues/4983) (Livestatus): Typo in livestatus key worst\_services\_state for hostgroups table
* [#4956](https://github.com/icinga/icinga2/issues/4956) (DB IDO, PR): Fix persistent comments for Acknowledgements
* [#4941](https://github.com/icinga/icinga2/issues/4941) (Metrics, PR): PerfData: Server Timeouts for InfluxDB Writer
* [#4709](https://github.com/icinga/icinga2/issues/4709) (API): Posting config stage fails on FreeBSD
* [#4696](https://github.com/icinga/icinga2/issues/4696) (Notifications): Notifications are sent when reloading Icinga 2 even though they're deactivated via modified attributes
* [#4666](https://github.com/icinga/icinga2/issues/4666) (Graylog, Metrics): GelfWriter with enable\_send\_perfdata breaks checks
* [#4532](https://github.com/icinga/icinga2/issues/4532) (Graylog, Metrics): Icinga 2 "hangs" if the GelfWriter cannot send messages
* [#4440](https://github.com/icinga/icinga2/issues/4440) (DB IDO, Log): Exceptions might be better than exit in IDO
* [#3664](https://github.com/icinga/icinga2/issues/3664) (DB IDO): mysql\_error cannot be used for mysql\_init
* [#3483](https://github.com/icinga/icinga2/issues/3483) (Compat): Stacktrace on Command Pipe Error
* [#3410](https://github.com/icinga/icinga2/issues/3410) (Livestatus): Livestatus: Problem with stats min operator
* [#121](https://github.com/icinga/icinga2/issues/121) (CLI, PR): give only warnings if feature is already disabled
* [#5448](https://github.com/icinga/icinga2/issues/5448) (Documentation, PR): Update documentation for 2.7.0
* [#5440](https://github.com/icinga/icinga2/issues/5440) (Documentation, PR): Add missing notification state filter to documentation
* [#5425](https://github.com/icinga/icinga2/issues/5425) (Documentation, PR): Fix formatting in API docs
* [#5410](https://github.com/icinga/icinga2/issues/5410) (Documentation): Update docs for better compatibility with mkdocs
* [#5393](https://github.com/icinga/icinga2/issues/5393) (Documentation, PR): Fix typo in the documentation
* [#5378](https://github.com/icinga/icinga2/issues/5378) (Documentation, PR): Fixed warnings when using mkdocs
* [#5370](https://github.com/icinga/icinga2/issues/5370) (Documentation, PR): Rename ChangeLog to CHANGELOG.md
* [#5366](https://github.com/icinga/icinga2/issues/5366) (Documentation, PR): Fixed wrong node in documentation chapter Client/Satellite Linux Setup
* [#5365](https://github.com/icinga/icinga2/issues/5365) (Documentation, PR): Update package documentation for Debian Stretch
* [#5358](https://github.com/icinga/icinga2/issues/5358) (Documentation, PR): Add documentation for securing mysql on Debian/Ubuntu.
* [#5357](https://github.com/icinga/icinga2/issues/5357) (Documentation, Notifications, PR): Notification Scripts: Ensure that mail from address works on Debian/RHEL/SUSE \(mailutils vs mailx\)
* [#5333](https://github.com/icinga/icinga2/issues/5333) (Documentation, PR): Update documentation for enhanced notification scripts
* [#5324](https://github.com/icinga/icinga2/issues/5324) (Documentation, PR): Fix phrasing in Getting Started chapter
* [#5317](https://github.com/icinga/icinga2/issues/5317) (Documentation, PR): Fix typo in INSTALL.md
* [#5315](https://github.com/icinga/icinga2/issues/5315) (Documentation, PR): Docs: Replace nagios-plugins by monitoring-plugins for Debian/Ubuntu
* [#5314](https://github.com/icinga/icinga2/issues/5314) (Documentation, PR): Document Common name \(CN\) in client setup
* [#5309](https://github.com/icinga/icinga2/issues/5309) (Documentation, PR): Docs: Replace the command pipe w/ the REST API as Icinga Web 2 requirement in 'Getting Started' chapter
* [#5291](https://github.com/icinga/icinga2/issues/5291) (Documentation): Update docs for RHEL/CentOS 5 EOL
* [#5285](https://github.com/icinga/icinga2/issues/5285) (Documentation, PR): Fix sysstat installation in troubleshooting docs
* [#5279](https://github.com/icinga/icinga2/issues/5279) (Documentation, PR): Docs: Add API query example for acknowledgements w/o expire time
* [#5157](https://github.com/icinga/icinga2/issues/5157) (Documentation): "Three Levels with master, Satellites, and Clients" chapter is not clear about client config
* [#5155](https://github.com/icinga/icinga2/issues/5155) (Documentation): 3.5. Apply Rules topic in the docs needs work.
* [#5151](https://github.com/icinga/icinga2/issues/5151) (Documentation, PR): Replace http:// links with https:// links where a secure website exists
* [#5150](https://github.com/icinga/icinga2/issues/5150) (Documentation): Invalid links in documentation
* [#5149](https://github.com/icinga/icinga2/issues/5149) (Documentation, PR): Update documentation, change http:// links to https:// links where a website exists
* [#5144](https://github.com/icinga/icinga2/issues/5144) (Documentation): Extend troubleshooting docs w/ environment analysis and common tools
* [#5143](https://github.com/icinga/icinga2/issues/5143) (Documentation): Docs: Explain how to include your own config tree instead of conf.d
* [#5142](https://github.com/icinga/icinga2/issues/5142) (Documentation): Add an Elastic Stack Integrations chapter to feature documentation
* [#5140](https://github.com/icinga/icinga2/issues/5140) (Documentation): Documentation should explain that runtime modifications are not immediately updated for "object list"
* [#5137](https://github.com/icinga/icinga2/issues/5137) (Documentation): Doc updates: Getting Started w/ own config, Troubleshooting w/ debug console
* [#5111](https://github.com/icinga/icinga2/issues/5111) (Documentation): Fix duration attribute requirement for schedule-downtime API action
* [#5104](https://github.com/icinga/icinga2/issues/5104) (Documentation, PR): Correct link to nscp documentation
* [#5097](https://github.com/icinga/icinga2/issues/5097) (Documentation): The last example for typeof\(\) is missing the result
* [#5090](https://github.com/icinga/icinga2/issues/5090) (Cluster, Documentation): EventHandler to be executed at the endpoint
* [#5077](https://github.com/icinga/icinga2/issues/5077) (Documentation): Replace the 'command' feature w/ the REST API for Icinga Web 2
* [#5016](https://github.com/icinga/icinga2/issues/5016) (Documentation, ITL, PR): Add fuse.gvfs-fuse-daemon to disk\_exclude\_type
* [#5010](https://github.com/icinga/icinga2/issues/5010) (Documentation): \[Documentation\] Missing parameter for SNMPv3 auth
* [#3560](https://github.com/icinga/icinga2/issues/3560) (Documentation): Explain check\_memorys and check\_disks thresholds
* [#1880](https://github.com/icinga/icinga2/issues/1880) (Documentation): add a section for 'monitoring the icinga2 node'
* [#5326](https://github.com/icinga/icinga2/issues/5326) (Documentation, Installation, PR): Install the images directory containing the needed PNGs for the markd
* [#5177](https://github.com/icinga/icinga2/issues/5177) (Packages): Issues Packing icinga 2.6.3 tar.gz to RPM
* [#5153](https://github.com/icinga/icinga2/issues/5153) (Packages, PR): Changed dependency of selinux subpackage
* [#5127](https://github.com/icinga/icinga2/issues/5127) (Installation, PR): Improve systemd service file
* [#5102](https://github.com/icinga/icinga2/issues/5102) (Compat, Configuration, Packages): Deprecate the icinga2-classicui-config package
* [#5101](https://github.com/icinga/icinga2/issues/5101) (Packages, Windows): Fix incorrect metadata for the Chocolatey package
* [#5100](https://github.com/icinga/icinga2/issues/5100) (Packages, Windows): Update Chocolatey package to match current guidelines
* [#5094](https://github.com/icinga/icinga2/issues/5094) (Cluster, Configuration): Log message "Object cannot be deleted because it was not created using the API"
* [#5087](https://github.com/icinga/icinga2/issues/5087) (Configuration): Function metadata should show available arguments
* [#5042](https://github.com/icinga/icinga2/issues/5042) (DB IDO, PR): Add link to upgrade documentation to log message
* [#4977](https://github.com/icinga/icinga2/issues/4977) (Cluster, Installation): icinga2/api/log directory is not created
* [#4921](https://github.com/icinga/icinga2/issues/4921) (Installation, Packages): No network dependency for /etc/init.d/icinga2
* [#5057](https://github.com/icinga/icinga2/issues/5057) (Documentation): Update Security section in the Distributed Monitoring chapter
* [#5055](https://github.com/icinga/icinga2/issues/5055) (Documentation, ITL): mysql\_socket attribute missing in the documentation for the mysql CheckCommand
* [#5035](https://github.com/icinga/icinga2/issues/5035) (Documentation): Docs: Typo in Distributed Monitoring chapter
* [#5030](https://github.com/icinga/icinga2/issues/5030) (Documentation): Advanced topics: Mention the API and explain stick acks, fixed/flexible downtimes
* [#4952](https://github.com/icinga/icinga2/issues/4952) (API, CLI): Icinga crashes while trying to remove configuration files for objects which no longer exist
* The "bottom up" client configuration mode has been deprecated. Check [#13255](https://dev.icinga.com/issues/13255) for additional details and migration.
* There are 2 processes started instead of previously just one process.
* Windows client
* Package bundles NSClient++ 0.5.0. ITL CheckCommands have been updated too.
* Allow to configure the user account for the Icinga 2 service. This is useful if several checks require administrator permissions (e.g. check_update.exe)
* Bugfixes for check plugins
* Cluster and API
* Provide location information for objects and templates in the API
* Improve log message for ignored config updates
* Fix cluster resync problem with API created objects (hosts, downtimes, etc.)
* Fix that API-created objects in a global zone are not synced to child endpoints
* Notifications
* Several bugfixes for downtime, custom and flapping notifications
* New ITL CheckCommands: logstash, glusterfs, iostats
* Package builds require a compiler which supports C++11 features (gcc-c++ >= 4.7, clang++)
* DB IDO
* Schema upgrade required (2.6.0.sql)
* This update fixes timestamp columns required by Icinga Web 2 and might take a while. Please ensure to schedule a maintenance task for your database upgrade.
* [#4770](https://github.com/icinga/icinga2/issues/4770) (API): Allow to evaluate macros through the API
* [#4713](https://github.com/icinga/icinga2/issues/4713) (Cluster): Check whether nodes are synchronizing the API log before putting them into UNKNOWN
* [#4651](https://github.com/icinga/icinga2/issues/4651) (Plugins): Review windows plugins performance output
* [#4631](https://github.com/icinga/icinga2/issues/4631) (Configuration): Suppress compiler warnings for auto-generated code
* [#4622](https://github.com/icinga/icinga2/issues/4622) (Cluster): Improve log message for ignored config updates
* [#4590](https://github.com/icinga/icinga2/issues/4590): Make sure that libmethods is automatically loaded even when not using the ITL
* [#4587](https://github.com/icinga/icinga2/issues/4587) (Configuration): Implement support for default templates
* [#4580](https://github.com/icinga/icinga2/issues/4580) (API): Provide location information for objects and templates in the API
* [#4576](https://github.com/icinga/icinga2/issues/4576): Use lambda functions for INITIALIZE\_ONCE
* [#4575](https://github.com/icinga/icinga2/issues/4575): Use 'auto' for iterator declarations
* [#4571](https://github.com/icinga/icinga2/issues/4571): Implement an rvalue constructor for the String and Value classes
* [#4570](https://github.com/icinga/icinga2/issues/4570) (Configuration): Implement a command-line argument for "icinga2 console" to allow specifying a script file
* [#4831](https://github.com/icinga/icinga2/issues/4831) (CLI): Wrong help string for node setup cli command argument --master\_host
* [#4828](https://github.com/icinga/icinga2/issues/4828) (API): Crash in CreateObjectHandler \(regression from \#11684
* [#4802](https://github.com/icinga/icinga2/issues/4802): Icinga tries to delete Downtime objects that were statically configured
* [#4801](https://github.com/icinga/icinga2/issues/4801): Sending a HUP signal to the child process for execution actually kills it
* [#4791](https://github.com/icinga/icinga2/issues/4791) (DB IDO): PostgreSQL: Don't use timestamp with timezone for UNIX timestamp columns
* [#4789](https://github.com/icinga/icinga2/issues/4789) (Notifications): Recovery notifications sent for Not-Problem notification type if notified before
* [#4775](https://github.com/icinga/icinga2/issues/4775) (Cluster): Crash w/ SendNotifications cluster handler and check result with empty perfdata
* [#4771](https://github.com/icinga/icinga2/issues/4771): Config validation crashes when using command\_endpoint without also having an ApiListener object
* [#4752](https://github.com/icinga/icinga2/issues/4752) (Graphite): Performance data writer for Graphite : Values without fraction limited to 2147483647 \(7FFFFFFF\)
* [#4740](https://github.com/icinga/icinga2/issues/4740): SIGALRM handling may be affected by recent commit
* [#4726](https://github.com/icinga/icinga2/issues/4726) (Notifications): Flapping notifications sent for soft state changes
* [#4717](https://github.com/icinga/icinga2/issues/4717) (API): Icinga crashes while deleting a config file which doesn't exist anymore
* [#4678](https://github.com/icinga/icinga2/issues/4678) (Configuration): Configuration validation fails when setting tls\_protocolmin to TLSv1.2
* [#4566](https://github.com/icinga/icinga2/issues/4566) (Notifications): Fixed downtimes scheduled for a future date trigger DOWNTIMESTART notifications
* [#4564](https://github.com/icinga/icinga2/issues/4564): Add missing initializer for WorkQueue::m\_NextTaskID
* [#3575](https://github.com/icinga/icinga2/issues/3575) (DB IDO): MySQL 5.7.9, Incorrect datetime value Error
* [#3565](https://github.com/icinga/icinga2/issues/3565) (Plugins): Windows Agent: performance data of check\_perfmon
* [#3564](https://github.com/icinga/icinga2/issues/3564) (Plugins): Windows Agent: Performance data values for check\_perfmon.exe are invalid sometimes
* [#3220](https://github.com/icinga/icinga2/issues/3220) (Plugins): Implement support for resolving DNS hostnames in check\_ping.exe
* [#2847](https://github.com/icinga/icinga2/issues/2847): File descriptors are leaked to child processes which makes SELinux unhappy
* [#4842](https://github.com/icinga/icinga2/issues/4842) (ITL): Add tempdir attribute to postgres CheckCommand
* [#4837](https://github.com/icinga/icinga2/issues/4837) (ITL): Add sudo option to mailq CheckCommand
* [#4836](https://github.com/icinga/icinga2/issues/4836) (ITL): Add verbose parameter to http CheckCommand
* [#4835](https://github.com/icinga/icinga2/issues/4835) (ITL): Add timeout option to mysql\_health CheckCommand
* [#4714](https://github.com/icinga/icinga2/issues/4714) (ITL): Default values for check\_swap are incorrect
* [#4710](https://github.com/icinga/icinga2/issues/4710) (ITL): snmp\_miblist variable to feed the -m option of check\_snmp is missing in the snmpv3 CheckCommand object
* [#4684](https://github.com/icinga/icinga2/issues/4684) (ITL): Add a radius CheckCommand for the radius check provide by nagios-plugins
* [#4681](https://github.com/icinga/icinga2/issues/4681) (ITL): Add CheckCommand definition for check\_logstash
* [#4677](https://github.com/icinga/icinga2/issues/4677) (ITL): Problem passing arguments to nscp-local CheckCommand objects
* [#4672](https://github.com/icinga/icinga2/issues/4672) (ITL): Add timeout option to oracle\_health CheckCommand
* [#4618](https://github.com/icinga/icinga2/issues/4618) (ITL): Hangman easter egg is broken
* [#4608](https://github.com/icinga/icinga2/issues/4608) (ITL): Add CheckCommand definition for check\_iostats
* [#4597](https://github.com/icinga/icinga2/issues/4597) (ITL): Default disk plugin check should not check inodes
* [#4595](https://github.com/icinga/icinga2/issues/4595) (ITL): Manubulon: Add missing procurve memory flag
* [#4585](https://github.com/icinga/icinga2/issues/4585) (ITL): Fix code style violations in the ITL
* [#4582](https://github.com/icinga/icinga2/issues/4582) (ITL): Incorrect help text for check\_swap
* [#4543](https://github.com/icinga/icinga2/issues/4543) (ITL): ITL - check\_vmware\_esx - specify a datacenter/vsphere server for esx/host checks
* [#4324](https://github.com/icinga/icinga2/issues/4324) (ITL): Add CheckCommand definition for check\_glusterfs
* [#4862](https://github.com/icinga/icinga2/issues/4862) (Documentation): "2.1.4. Installation Paths" should contain systemd paths
* [#4861](https://github.com/icinga/icinga2/issues/4861) (Documentation): Update "2.1.3. Enabled Features during Installation" - outdated "feature list"
* [#4859](https://github.com/icinga/icinga2/issues/4859) (Documentation): Update package instructions for Fedora
* [#4851](https://github.com/icinga/icinga2/issues/4851) (Documentation): Update README.md and correct project URLs
* [#4846](https://github.com/icinga/icinga2/issues/4846) (Documentation): Add a note for boolean values in the disk CheckCommand section
* [#4845](https://github.com/icinga/icinga2/issues/4845) (Documentation): Troubleshooting: Add examples for fetching the executed command line
* [#4840](https://github.com/icinga/icinga2/issues/4840) (Documentation): Update Windows screenshots in the client documentation
* [#4838](https://github.com/icinga/icinga2/issues/4838) (Documentation): Add example for concurrent\_checks in CheckerComponent object type
* [#4829](https://github.com/icinga/icinga2/issues/4829) (Documentation): Missing API headers for X-HTTP-Method-Override
* [#4827](https://github.com/icinga/icinga2/issues/4827) (Documentation): Fix example in PNP template docs
* [#4821](https://github.com/icinga/icinga2/issues/4821) (Documentation): Add a note about removing "conf.d" on the client for "top down command endpoint" setups
* [#4809](https://github.com/icinga/icinga2/issues/4809) (Documentation): Update API and Library Reference chapters
* [#4804](https://github.com/icinga/icinga2/issues/4804) (Documentation): Add a note about default template import to the CheckCommand object
* [#4800](https://github.com/icinga/icinga2/issues/4800) (Documentation): Docs: Typo in "CLI commands" chapter
* [#4793](https://github.com/icinga/icinga2/issues/4793) (Documentation): Docs: ITL plugins contrib order
* [#4796](https://github.com/icinga/icinga2/issues/4796) (Installation): Sort Changelog by category
* [#4792](https://github.com/icinga/icinga2/issues/4792) (Tests): Add unit test for notification state/type filter checks
* [#4724](https://github.com/icinga/icinga2/issues/4724) (Packages): Update .mailmap for icinga.com
* [#4671](https://github.com/icinga/icinga2/issues/4671) (Packages): Windows Installer should include NSClient++ 0.5.0
* [#4612](https://github.com/icinga/icinga2/issues/4612) (Tests): Unit tests randomly crash after the tests have completed
* [#4607](https://github.com/icinga/icinga2/issues/4607) (Packages): Improve support for building the chocolatey package
* [#4588](https://github.com/icinga/icinga2/issues/4588) (Installation): Use raw string literals in mkembedconfig
* [#4578](https://github.com/icinga/icinga2/issues/4578) (Installation): Improve detection for the -flto compiler flag
* [#4569](https://github.com/icinga/icinga2/issues/4569) (Installation): Set versions for all internal libraries
* [#4558](https://github.com/icinga/icinga2/issues/4558) (Installation): Update cmake config to require a compiler that supports C++11
* [#4556](https://github.com/icinga/icinga2/issues/4556) (Installation): logrotate file is not properly generated when the logrotate binary resides in /usr/bin
* [#4551](https://github.com/icinga/icinga2/issues/4551) (Tests): Implement unit tests for state changes
* [#2943](https://github.com/icinga/icinga2/issues/2943) (Installation): Make the user account configurable for the Windows service
* [#2792](https://github.com/icinga/icinga2/issues/2792) (Tests): Livestatus tests don't work on OS X
* [#4511](https://github.com/icinga/icinga2/issues/4511): ClrCheck is null on \*nix
* [#4505](https://github.com/icinga/icinga2/issues/4505) (CLI): Cannot set ownership for user 'icinga' group 'icinga' on file '/var/lib/icinga2/ca/serial.txt'.
* [#4504](https://github.com/icinga/icinga2/issues/4504) (API): API: events for DowntimeTriggered does not provide needed information
* [#4502](https://github.com/icinga/icinga2/issues/4502) (DB IDO): IDO query fails due to key contraint violation for the icinga\_customvariablestatus table
* [#4501](https://github.com/icinga/icinga2/issues/4501) (Cluster): DB IDO started before daemonizing \(no systemd\)
* [#4500](https://github.com/icinga/icinga2/issues/4500) (DB IDO): Query for customvariablestatus incorrectly updates the host's/service's insert ID
* [#4499](https://github.com/icinga/icinga2/issues/4499) (DB IDO): Insert fails for the icinga\_scheduleddowntime table due to duplicate key
* [#4497](https://github.com/icinga/icinga2/issues/4497): Fix incorrect detection of the 'Concurrency' variable
* [#4496](https://github.com/icinga/icinga2/issues/4496) (API): API: action schedule-downtime requires a duration also when fixed is true
* [#4495](https://github.com/icinga/icinga2/issues/4495): Use hash-based serial numbers for new certificates
* [#4490](https://github.com/icinga/icinga2/issues/4490) (Cluster): ClusterEvents::NotificationSentAllUsersAPIHandler\(\) does not set notified\_users
* [#4488](https://github.com/icinga/icinga2/issues/4488): Replace GetType\(\)-\>GetName\(\) calls with GetReflectionType\(\)-\>GetName\(\)
* [#4484](https://github.com/icinga/icinga2/issues/4484) (Cluster): Only allow sending command\_endpoint checks to directly connected child zones
* [#4483](https://github.com/icinga/icinga2/issues/4483) (DB IDO): ido CheckCommand returns returns "Could not connect to database server" when HA enabled
* [#4481](https://github.com/icinga/icinga2/issues/4481) (DB IDO): Fix the "ido" check command for use with command\_endpoint
* [#4478](https://github.com/icinga/icinga2/issues/4478): CompatUtility::GetCheckableNotificationStateFilter is returning an incorrect value
* [#4476](https://github.com/icinga/icinga2/issues/4476) (DB IDO): Importing mysql schema fails
* [#4475](https://github.com/icinga/icinga2/issues/4475) (CLI): pki sign-csr does not log where it is writing the certificate file
* [#4472](https://github.com/icinga/icinga2/issues/4472) (DB IDO): IDO marks objects as inactive on shutdown
* [#4471](https://github.com/icinga/icinga2/issues/4471) (DB IDO): IDO does duplicate config updates
* [#4466](https://github.com/icinga/icinga2/issues/4466) (Configuration): 'use' keyword cannot be used with templates
* [#4462](https://github.com/icinga/icinga2/issues/4462) (Notifications): Add log message if notifications are forced \(i.e. filters are not checked\)
* [#4461](https://github.com/icinga/icinga2/issues/4461) (Notifications): Notification resent, even if interval = 0
* [#4460](https://github.com/icinga/icinga2/issues/4460) (DB IDO): Fixed downtime start does not update actual\_start\_time
* [#4458](https://github.com/icinga/icinga2/issues/4458): Flexible downtimes should be removed after trigger\_time+duration
* [#4455](https://github.com/icinga/icinga2/issues/4455): Disallow casting "" to an Object
* [#4447](https://github.com/icinga/icinga2/issues/4447): Handle I/O errors while writing the Icinga state file more gracefully
* [#4413](https://github.com/icinga/icinga2/issues/4413) (DB IDO): icinga2 empties custom variables, host-, servcie- and contactgroup members at the end of IDO database reconnection
* [#4412](https://github.com/icinga/icinga2/issues/4412) (Notifications): Reminder notifications ignore HA mode
* [#4405](https://github.com/icinga/icinga2/issues/4405) (DB IDO): Deprecation warning should include object type and name
* [#4401](https://github.com/icinga/icinga2/issues/4401) (Metrics): Incorrect escaping / formatting of perfdata to InfluxDB
* [#4399](https://github.com/icinga/icinga2/issues/4399): Icinga stats min\_execution\_time and max\_execution\_time are invalid
* [#4394](https://github.com/icinga/icinga2/issues/4394): icinga check reports "-1" for minimum latency and execution time and only uptime has a number but 0
* [#4391](https://github.com/icinga/icinga2/issues/4391) (DB IDO): Do not clear {host,service,contact}group\_members tables on restart
* [#4384](https://github.com/icinga/icinga2/issues/4384) (API): Fix URL encoding for '&'
* [#4378](https://github.com/icinga/icinga2/issues/4378) (Notifications): Optimize two ObjectLocks into one in Notification::BeginExecuteNotification method
* [#4376](https://github.com/icinga/icinga2/issues/4376) (Cluster): CheckerComponent sometimes fails to schedule checks in time
* [#4375](https://github.com/icinga/icinga2/issues/4375) (Cluster): Duplicate messages for command\_endpoint w/ master and satellite
* [#4372](https://github.com/icinga/icinga2/issues/4372) (API): state\_filters\_real shouldn't be visible in the API
* [#4371](https://github.com/icinga/icinga2/issues/4371) (Notifications): notification.notification\_number runtime attribute returning 0 \(instead of 1\) in first notification e-mail
* [#4370](https://github.com/icinga/icinga2/issues/4370): Test the change with HARD OK transitions
* [#4363](https://github.com/icinga/icinga2/issues/4363) (DB IDO): IDO module starts threads before daemonize
* [#4356](https://github.com/icinga/icinga2/issues/4356) (DB IDO): DB IDO query queue does not clean up with v2.4.10-520-g124c80b
* [#4349](https://github.com/icinga/icinga2/issues/4349) (DB IDO): Add missing index on state history for DB IDO cleanup
* [#4345](https://github.com/icinga/icinga2/issues/4345): Ensure to clear the SSL error queue before calling SSL\_{read,write,do\_handshake}
* [#4343](https://github.com/icinga/icinga2/issues/4343) (Configuration): include\_recursive should gracefully handle inaccessible files
* [#4341](https://github.com/icinga/icinga2/issues/4341) (API): Icinga incorrectly disconnects all endpoints if one has a wrong certificate
* [#4340](https://github.com/icinga/icinga2/issues/4340) (DB IDO): deadlock in ido reconnect
* [#4329](https://github.com/icinga/icinga2/issues/4329) (Metrics): Key Escapes in InfluxDB Writer Don't Work
* [#4313](https://github.com/icinga/icinga2/issues/4313) (Configuration): Icinga crashes when using include\_recursive in an object definition
* [#4278](https://github.com/icinga/icinga2/issues/4278) (DB IDO): SOFT state changes with the same state are not logged
* [#4275](https://github.com/icinga/icinga2/issues/4275) (API): Trying to delete an object protected by a permissions filter, ends up deleting all objects that match the filter instead
* [#4264](https://github.com/icinga/icinga2/issues/4264) (Metrics): InfluxWriter doesnt sanitize the data before sending
* [#4259](https://github.com/icinga/icinga2/issues/4259): Flapping Notifications dependent on state change
* [#4258](https://github.com/icinga/icinga2/issues/4258): last SOFT state should be hard \(max\_check\_attempts\)
* [#4257](https://github.com/icinga/icinga2/issues/4257) (Configuration): Incorrect custom variable name in the hosts.conf example config
* [#4255](https://github.com/icinga/icinga2/issues/4255) (Configuration): Config validation should not delete comments/downtimes w/o reference
* [#4244](https://github.com/icinga/icinga2/issues/4244): SOFT OK-state after returning from a soft state
* [#4239](https://github.com/icinga/icinga2/issues/4239) (Notifications): Downtime notifications do not pass author and comment
* [#4232](https://github.com/icinga/icinga2/issues/4232): Problems with check scheduling for HARD state changes \(standalone/command\_endpoint\)
* [#4231](https://github.com/icinga/icinga2/issues/4231) (DB IDO): Volatile check results for OK-\>OK transitions are logged into DB IDO statehistory
* [#4187](https://github.com/icinga/icinga2/issues/4187): Icinga 2 client gets killed during network scans
* [#4171](https://github.com/icinga/icinga2/issues/4171) (DB IDO): Outdated downtime/comments not removed from IDO database \(restart\)
* [#4134](https://github.com/icinga/icinga2/issues/4134) (Configuration): Don't allow flow control keywords outside of other flow control constructs
* [#4121](https://github.com/icinga/icinga2/issues/4121) (Notifications): notification interval = 0 not honoured in HA clusters
* [#4106](https://github.com/icinga/icinga2/issues/4106) (Notifications): last\_problem\_notification should be synced in HA cluster
* [#4077](https://github.com/icinga/icinga2/issues/4077): Numbers are not properly formatted in runtime macro strings
* [#4002](https://github.com/icinga/icinga2/issues/4002): Don't violate POSIX by ensuring that the argument to usleep\(3\) is less than 1000000
* [#3954](https://github.com/icinga/icinga2/issues/3954) (Cluster): High load when pinning command endpoint on HA cluster
* [#3949](https://github.com/icinga/icinga2/issues/3949) (DB IDO): IDO: entry\_time of all comments is set to the date and time when Icinga 2 was restarted
* [#3902](https://github.com/icinga/icinga2/issues/3902): Hang in TlsStream::Handshake
* [#3820](https://github.com/icinga/icinga2/issues/3820) (Configuration): High CPU usage with self-referenced parent zone config
* [#4521](https://github.com/icinga/icinga2/issues/4521) (Documentation): Typo in Notification object documentation
* [#4517](https://github.com/icinga/icinga2/issues/4517) (Documentation): Documentation is missing for the API permissions that are new in 2.5.0
* [#4513](https://github.com/icinga/icinga2/issues/4513) (Documentation): Development docs: Add own section for gdb backtrace from a running process
* [#4510](https://github.com/icinga/icinga2/issues/4510) (Documentation): Docs: API example uses wrong attribute name
* [#4489](https://github.com/icinga/icinga2/issues/4489) (Documentation): Missing documentation for "legacy-timeperiod" template
* [#4470](https://github.com/icinga/icinga2/issues/4470) (Documentation): The description for the http\_certificate attribute doesn't have the right default value
* [#4468](https://github.com/icinga/icinga2/issues/4468) (Documentation): Add URL and short description for Monitoring Plugins inside the ITL documentation
* [#4453](https://github.com/icinga/icinga2/issues/4453) (Documentation): Rewrite Client and Cluster chapter and; add service monitoring chapter
* [#4419](https://github.com/icinga/icinga2/issues/4419) (Documentation): Incorrect API permission name for /v1/status in the documentation
* [#4396](https://github.com/icinga/icinga2/issues/4396) (Documentation): Missing explanation for three level clusters with CSR auto-signing
* [#4395](https://github.com/icinga/icinga2/issues/4395) (Documentation): Incorrect documentation about apply rules in zones.d directories
* [#4387](https://github.com/icinga/icinga2/issues/4387) (Documentation): Improve author information about check\_yum
* [#4361](https://github.com/icinga/icinga2/issues/4361) (Documentation): pkg-config is not listed as a build requirement in INSTALL.md
* [#4337](https://github.com/icinga/icinga2/issues/4337) (Documentation): Add a note to the docs that API POST updates to custom attributes/groups won't trigger re-evaluation
* [#4333](https://github.com/icinga/icinga2/issues/4333) (Documentation): Documentation: Setting up Plugins section is broken
* [#4328](https://github.com/icinga/icinga2/issues/4328) (Documentation): Typo in Manubulon CheckCommand documentation
* [#4318](https://github.com/icinga/icinga2/issues/4318) (Documentation): Migration docs still show unsupported CHANGE\_\*MODATTR external commands
* [#4306](https://github.com/icinga/icinga2/issues/4306) (Documentation): Add a note about creating Zone/Endpoint objects with the API
* [#4299](https://github.com/icinga/icinga2/issues/4299) (Documentation): Incorrect URL for API examples in the documentation
* [#4526](https://github.com/icinga/icinga2/issues/4526) (Packages): Revert dependency on firewalld on RHEL
* [#4494](https://github.com/icinga/icinga2/issues/4494) (Installation): Remove unused functions from icinga-installer
* [#4452](https://github.com/icinga/icinga2/issues/4452) (Packages): Error compiling on windows due to changes in apilistener around minimum tls version
* [#4432](https://github.com/icinga/icinga2/issues/4432) (Packages): Windows build broken since ref 11292
* [#4225](https://github.com/icinga/icinga2/issues/4225) (Compat): Command Pipe thread 100% CPU Usage
* [#4224](https://github.com/icinga/icinga2/issues/4224): Checks are not executed anymore on command
* [#4222](https://github.com/icinga/icinga2/issues/4222) (Configuration): Segfault when trying to start 2.4.8
* [#4221](https://github.com/icinga/icinga2/issues/4221) (Metrics): Error: Function call 'rename' for file '/var/spool/icinga2/tmp/service-perfdata' failed with error code 2, 'No such file or directory'
* [#4210](https://github.com/icinga/icinga2/issues/4210) (API): Incorrect variable names for joined fields in filters
* [#4204](https://github.com/icinga/icinga2/issues/4204) (DB IDO): Ensure that program status updates are immediately updated in DB IDO
* [#4202](https://github.com/icinga/icinga2/issues/4202) (API): API: Missing error handling for invalid JSON request body
* [#4182](https://github.com/icinga/icinga2/issues/4182): Crash in UnameHelper
* [#4180](https://github.com/icinga/icinga2/issues/4180): Expired downtimes are not removed
* [#4170](https://github.com/icinga/icinga2/issues/4170) (API): Icinga Crash with the workflow Create\_Host-\> Downtime for the Host -\> Delete Downtime -\> Remove Host
* [#3881](https://github.com/icinga/icinga2/issues/3881) (Cluster): Icinga2 agent gets stuck after disconnect and won't relay messages
* [#3707](https://github.com/icinga/icinga2/issues/3707) (Configuration): Comments and downtimes of deleted checkable objects are not deleted
* [#3526](https://github.com/icinga/icinga2/issues/3526): Icinga crashes with a segfault on receiving a lot of check results for nonexisting hosts/services
* [#3316](https://github.com/icinga/icinga2/issues/3316) (Configuration): Service apply without name possible
* [#4131](https://github.com/icinga/icinga2/issues/4131) (Configuration): Vim Syntax Highlighting does not work with assign where
* [#4116](https://github.com/icinga/icinga2/issues/4116) (API): icinga2 crashes when a command\_endpoint is set, but the api feature is not active
* [#4114](https://github.com/icinga/icinga2/issues/4114): Compiler warning in NotifyActive
* [#4109](https://github.com/icinga/icinga2/issues/4109) (API): Navigation attributes are missing in /v1/objects/\<type\>
* [#4104](https://github.com/icinga/icinga2/issues/4104) (Configuration): Segfault during config validation if host exists, service does not exist any longer and downtime expires
* [#4095](https://github.com/icinga/icinga2/issues/4095): DowntimesExpireTimerHandler crashes Icinga2 with \<unknown function\>
* [#4089](https://github.com/icinga/icinga2/issues/4089): Make the socket event engine configurable
* [#4078](https://github.com/icinga/icinga2/issues/4078) (Configuration): Overwriting global type variables causes crash in ConfigItem::Commit\(\)
* [#4076](https://github.com/icinga/icinga2/issues/4076) (API): API User gets wrongly authenticated \(client\_cn and no password\)
* [#4066](https://github.com/icinga/icinga2/issues/4066): ConfigSync broken from 2.4.3. to 2.4.4 under Windows
* [#4056](https://github.com/icinga/icinga2/issues/4056) (CLI): Remove semi-colons in the auto-generated configs
* [#4052](https://github.com/icinga/icinga2/issues/4052) (API): Config validation for Notification objects should check whether the state filters are valid
* [#4057](https://github.com/icinga/icinga2/issues/4057) (Documentation): Update the CentOS installation documentation
* [#4055](https://github.com/icinga/icinga2/issues/4055) (Documentation): Add silent install / reference to NSClient++ to documentation
* [#4043](https://github.com/icinga/icinga2/issues/4043) (Documentation): Docs: Remove the migration script chapter
* [#4041](https://github.com/icinga/icinga2/issues/4041) (Documentation): Explain how to use functions for wildcard matches for arrays and/or dictionaries in assign where expressions
* [#4039](https://github.com/icinga/icinga2/issues/4039) (Documentation): Update .mailmap for Markus Frosch
* [#3145](https://github.com/icinga/icinga2/issues/3145) (Documentation): Add Windows setup wizard screenshots
* [#4036](https://github.com/icinga/icinga2/issues/4036) (CLI): Add the executed cli command to the Windows wizard error messages
* [#4019](https://github.com/icinga/icinga2/issues/4019) (Configuration): Segmentation fault during 'icinga2 daemon -C'
* [#4017](https://github.com/icinga/icinga2/issues/4017) (CLI): 'icinga2 feature list' fails when all features are disabled
* [#4008](https://github.com/icinga/icinga2/issues/4008) (Configuration): Windows wizard error "too many arguments"
* [#4006](https://github.com/icinga/icinga2/issues/4006): Volatile transitions from HARD NOT-OK-\>NOT-OK do not trigger notifications
* [#3996](https://github.com/icinga/icinga2/issues/3996): epoll\_ctl might cause oops on Ubuntu trusty
* [#3990](https://github.com/icinga/icinga2/issues/3990): Services status updated multiple times within check\_interval even though no retry was triggered
* [#3987](https://github.com/icinga/icinga2/issues/3987): Incorrect check interval when passive check results are used
* [#3985](https://github.com/icinga/icinga2/issues/3985): Active checks are executed even though passive results are submitted
* [#3981](https://github.com/icinga/icinga2/issues/3981): DEL\_DOWNTIME\_BY\_HOST\_NAME does not accept optional arguments
* [#3961](https://github.com/icinga/icinga2/issues/3961) (CLI): Wrong log message for trusted cert in node setup command
* [#3939](https://github.com/icinga/icinga2/issues/3939) (CLI): Common name in node wizard isn't case sensitive
* [#3745](https://github.com/icinga/icinga2/issues/3745) (API): Status code 200 even if an object could not be deleted.
* [#3742](https://github.com/icinga/icinga2/issues/3742) (DB IDO): DB IDO: User notification type filters are incorrect
* [#3442](https://github.com/icinga/icinga2/issues/3442) (API): MkDirP not working on Windows
* [#3439](https://github.com/icinga/icinga2/issues/3439) (Notifications): Host notification type is PROBLEM but should be RECOVERY
* [#3303](https://github.com/icinga/icinga2/issues/3303) (Notifications): Problem notifications while Flapping is active
* [#3153](https://github.com/icinga/icinga2/issues/3153) (Notifications): Flapping notifications are sent for hosts/services which are in a downtime
* [#3786](https://github.com/icinga/icinga2/issues/3786) (DB IDO): Evaluate if CanExecuteQuery/FieldToEscapedString lead to exceptions on !m\_Connected
* [#3783](https://github.com/icinga/icinga2/issues/3783) (DB IDO): Implement support for re-ordering groups of IDO queries
* [#3775](https://github.com/icinga/icinga2/issues/3775) (Configuration): Config validation doesn't fail when templates are used as object names
* [#3774](https://github.com/icinga/icinga2/issues/3774) (DB IDO): IDO breaks when writing to icinga\_programstatus with latest snapshots
* [#3773](https://github.com/icinga/icinga2/issues/3773) (Configuration): Relative path in include\_zones does not work
* [#3766](https://github.com/icinga/icinga2/issues/3766) (API): Cluster config sync ignores zones.d from API packages
* [#3765](https://github.com/icinga/icinga2/issues/3765): Use NodeName in null and random checks
* [#3764](https://github.com/icinga/icinga2/issues/3764) (DB IDO): Failed IDO query for icinga\_downtimehistory
* [#3752](https://github.com/icinga/icinga2/issues/3752): Incorrect information in --version on Linux
* [#3741](https://github.com/icinga/icinga2/issues/3741) (DB IDO): Avoid duplicate config and status updates on startup
* [#3735](https://github.com/icinga/icinga2/issues/3735) (Configuration): Disallow lambda expressions where side-effect-free expressions are not allowed
* [#3730](https://github.com/icinga/icinga2/issues/3730): Missing path in mkdir\(\) exceptions
* [#3728](https://github.com/icinga/icinga2/issues/3728) (DB IDO): build of icinga2 with gcc 4.4.7 segfaulting with ido
* [#3722](https://github.com/icinga/icinga2/issues/3722) (API): Missing num\_hosts\_pending in /v1/status/CIB
* [#3715](https://github.com/icinga/icinga2/issues/3715) (CLI): node wizard does not remember user defined port
* [#3712](https://github.com/icinga/icinga2/issues/3712) (CLI): Remove the local zone name question in node wizard
* [#3705](https://github.com/icinga/icinga2/issues/3705) (API): API is not working on wheezy
* [#3704](https://github.com/icinga/icinga2/issues/3704) (Cluster): ApiListener::ReplayLog can block with a lot of clients
* [#3702](https://github.com/icinga/icinga2/issues/3702) (Cluster): Zone::CanAccessObject is very expensive
* [#3697](https://github.com/icinga/icinga2/issues/3697) (Compat): Crash in ExternalCommandListener
* [#3677](https://github.com/icinga/icinga2/issues/3677) (API): API queries cause memory leaks
* [#3613](https://github.com/icinga/icinga2/issues/3613) (DB IDO): Non-UTF8 characters from plugins causes IDO to fail
* [#3606](https://github.com/icinga/icinga2/issues/3606) (Plugins): check\_network performance data in invalid format
* [#3571](https://github.com/icinga/icinga2/issues/3571) (Plugins): check\_memory and check\_swap plugins do unit conversion and rounding before percentage calculations resulting in imprecise percentages
* [#3946](https://github.com/icinga/icinga2/issues/3946) (Documentation): Documentation: Unescaped pipe character in tables
* [#3893](https://github.com/icinga/icinga2/issues/3893) (Documentation): Outdated link to icingaweb2-module-nagvis
* [#3892](https://github.com/icinga/icinga2/issues/3892) (Documentation): Partially missing escaping in doc/7-icinga-template-library.md
* [#3861](https://github.com/icinga/icinga2/issues/3861) (Documentation): Incorrect IdoPgSqlConnection Example in Documentation
* [#3850](https://github.com/icinga/icinga2/issues/3850) (Documentation): Incorrect name in AUTHORS
* [#3836](https://github.com/icinga/icinga2/issues/3836) (Documentation): Troubleshooting: Explain how to fetch the executed command
* [#3833](https://github.com/icinga/icinga2/issues/3833) (Documentation): Better explaination for array values in "disk" CheckCommand docs
* [#3826](https://github.com/icinga/icinga2/issues/3826) (Documentation): Add example how to use custom functions in attributes
* [#3808](https://github.com/icinga/icinga2/issues/3808) (Documentation): Typos in the "troubleshooting" section of the documentation
* [#3793](https://github.com/icinga/icinga2/issues/3793) (Documentation): "setting up check plugins" section should be enhanced with package manager examples
* [#3781](https://github.com/icinga/icinga2/issues/3781) (Documentation): Formatting problem in "Advanced Filter" chapter
* [#3770](https://github.com/icinga/icinga2/issues/3770) (Documentation): Missing documentation for API packages zones.d config sync
* [#3759](https://github.com/icinga/icinga2/issues/3759) (Documentation): Missing SUSE repository for monitoring plugins documentation
* [#3748](https://github.com/icinga/icinga2/issues/3748) (Documentation): Wrong postgresql-setup initdb command for RHEL7
* [#3550](https://github.com/icinga/icinga2/issues/3550) (Documentation): A PgSQL DB for the IDO can't be created w/ UTF8
* [#3549](https://github.com/icinga/icinga2/issues/3549) (Documentation): Incorrect SQL command for creating the user of the PostgreSQL DB for the IDO
* [#3701](https://github.com/icinga/icinga2/issues/3701) (Documentation): Incorrect path for icinga2 binary in development documentation
* [#3690](https://github.com/icinga/icinga2/issues/3690) (Documentation): Fix typos in the documentation
* [#3673](https://github.com/icinga/icinga2/issues/3673) (Documentation): Documentation for schedule-downtime is missing required paremeters
* [#3594](https://github.com/icinga/icinga2/issues/3594) (Documentation): Documentation example in "Access Object Attributes at Runtime" doesn't work correctly
* [#3391](https://github.com/icinga/icinga2/issues/3391) (Documentation): Incorrect web inject URL in documentation
* RESTful API with basic auth or client certificates
* Filters, types, permissions
* configuration package management
* query/create/modify/delete config objects at runtime
* status queries for global stats
* actions (e.g. acknowledge all service problems)
* event streams
* ITL and Plugin Check Command definitions
* The 'running_kernel' check command was moved to the plugins-contrib section. You have to update your config to include 'plugins-contrib'
* Configuration
* The global constants Enable* and Vars have been removed. Use the IcingaApplication object attributes instead.
* Features
* New Graphite tree. Please check the documentation how enable the legacy schema.
* IcingaStatusWriter feature has been deprecated and will be removed in future versions.
* Modified attributes are not exposed as bit mask to external interfaces anymore (api related changes). External commands like CHANGE_*_MODATTR have been removed.
* [#3669](https://github.com/icinga/icinga2/issues/3669): Use notify\_one in WorkQueue::Enqueue
* [#3667](https://github.com/icinga/icinga2/issues/3667): Utility::FormatErrorNumber fails when error message uses arguments
* [#3649](https://github.com/icinga/icinga2/issues/3649) (DB IDO): Group memberships are not updated for runtime created objects
* [#3648](https://github.com/icinga/icinga2/issues/3648) (API): API overwrites \(and then deletes\) config file when trying to create an object that already exists
* [#3647](https://github.com/icinga/icinga2/issues/3647) (API): Don't allow users to set state attributes via PUT
* [#3645](https://github.com/icinga/icinga2/issues/3645): Deadlock in MacroProcessor::EvaluateFunction
* [#3635](https://github.com/icinga/icinga2/issues/3635): modify\_attribute: object cannot be cloned
* [#3633](https://github.com/icinga/icinga2/issues/3633) (API): Detailed error message is missing when object creation via API fails
* [#3632](https://github.com/icinga/icinga2/issues/3632) (API): API call doesn't fail when trying to use a template that doesn't exist
* [#3625](https://github.com/icinga/icinga2/issues/3625): Improve location information for errors in API filters
* [#3622](https://github.com/icinga/icinga2/issues/3622) (API): /v1/console should only use a single permission
* [#3620](https://github.com/icinga/icinga2/issues/3620) (API): 'remove-comment' action does not support filters
* [#3619](https://github.com/icinga/icinga2/issues/3619) (CLI): 'api setup' should create a user even when api feature is already enabled
* [#3618](https://github.com/icinga/icinga2/issues/3618) (CLI): Autocompletion doesn't work in the debugger
* [#3617](https://github.com/icinga/icinga2/issues/3617) (API): There's a variable called 'string' in filter expressions
* [#3602](https://github.com/icinga/icinga2/issues/3602) (DB IDO): Async mysql queries aren't logged in the debug log
* [#3601](https://github.com/icinga/icinga2/issues/3601): Don't validate custom attributes that aren't strings
* [#3600](https://github.com/icinga/icinga2/issues/3600): Crash in ConfigWriter::EmitIdentifier
* [#3598](https://github.com/icinga/icinga2/issues/3598) (CLI): Spaces do not work in command arguments
* [#3595](https://github.com/icinga/icinga2/issues/3595) (DB IDO): Change session\_token to integer timestamp
* [#3593](https://github.com/icinga/icinga2/issues/3593): Fix indentation for Dictionary::ToString
* [#3587](https://github.com/icinga/icinga2/issues/3587): Crash in ConfigWriter::GetKeywords
* [#3586](https://github.com/icinga/icinga2/issues/3586) (Cluster): Circular reference between \*Connection and TlsStream objects
* [#3583](https://github.com/icinga/icinga2/issues/3583) (API): Mismatch on {comment,downtime}\_id vs internal name in the API
* [#3581](https://github.com/icinga/icinga2/issues/3581): CreatePipeOverlapped is not thread-safe
* [#3579](https://github.com/icinga/icinga2/issues/3579): Figure out whether we need the Checkable attributes state\_raw, last\_state\_raw, hard\_state\_raw
* [#3577](https://github.com/icinga/icinga2/issues/3577) (Plugins): Increase the default timeout for OS checks
* [#3574](https://github.com/icinga/icinga2/issues/3574) (API): Plural name rule not treating edge case correcly
* [#3554](https://github.com/icinga/icinga2/issues/3554) (Configuration): Crash in IndexerExpression::GetReference when attempting to set an attribute on an object other than the current one
* [#3551](https://github.com/icinga/icinga2/issues/3551) (Configuration): Line continuation is broken in 'icinga2 console'
* [#3548](https://github.com/icinga/icinga2/issues/3548) (Configuration): Don't allow scripts to access FANoUserView attributes in sandbox mode
* [#3546](https://github.com/icinga/icinga2/issues/3546) (Cluster): Improve error handling during log replay
* [#3536](https://github.com/icinga/icinga2/issues/3536) (CLI): Improve --help output for the --log-level option
* [#3535](https://github.com/icinga/icinga2/issues/3535) (CLI): "Command options" is empty when executing icinga2 without any argument.
* [#3534](https://github.com/icinga/icinga2/issues/3534) (DB IDO): Custom variables aren't removed from the IDO database
* [#3524](https://github.com/icinga/icinga2/issues/3524) (DB IDO): Changing a group's attributes causes duplicate rows in the icinga\_\*group\_members table
* [#3517](https://github.com/icinga/icinga2/issues/3517): OpenBSD: hang during ConfigItem::ActivateItems\(\) in daemon startup
* [#3514](https://github.com/icinga/icinga2/issues/3514) (CLI): Misleading wording in generated zones.conf
* [#3501](https://github.com/icinga/icinga2/issues/3501) (API): restore\_attribute does not work in clusters
* [#3489](https://github.com/icinga/icinga2/issues/3489) (API): Ensure that modified attributes work with clients with local config and no zone attribute
* [#3485](https://github.com/icinga/icinga2/issues/3485) (API): Icinga2 API performance regression
* [#3482](https://github.com/icinga/icinga2/issues/3482) (API): Version updates are not working properly
* [#3468](https://github.com/icinga/icinga2/issues/3468) (CLI): icinga2 repository host add does not work
* [#3462](https://github.com/icinga/icinga2/issues/3462): ConfigWriter::EmitValue should format floating point values properly
* [#3461](https://github.com/icinga/icinga2/issues/3461) (API): Config sync does not set endpoint syncing and plays disconnect-sync ping-pong
* [#3459](https://github.com/icinga/icinga2/issues/3459) (API): /v1/objects/\<type\> returns an HTTP error when there are no objects of that type
* [#3457](https://github.com/icinga/icinga2/issues/3457) (API): Config Sync shouldn't send updates for objects the client doesn't have access to
* [#3451](https://github.com/icinga/icinga2/issues/3451) (API): Properly encode URLs in Icinga Studio
* [#3448](https://github.com/icinga/icinga2/issues/3448) (API): Use a temporary file for modified-attributes.conf updates
* [#3445](https://github.com/icinga/icinga2/issues/3445) (Configuration): ASCII NULs don't work in string values
* [#3438](https://github.com/icinga/icinga2/issues/3438) (API): URL parser is cutting off last character
* [#3434](https://github.com/icinga/icinga2/issues/3434) (API): PerfdataValue is not properly serialised in status queries
* [#3433](https://github.com/icinga/icinga2/issues/3433) (API): Move the Collection status handler to /v1/status
* [#3422](https://github.com/icinga/icinga2/issues/3422) (Configuration): Detect infinite recursion in user scripts
* [#3411](https://github.com/icinga/icinga2/issues/3411) (API): API actions do not follow REST guidelines
* [#3383](https://github.com/icinga/icinga2/issues/3383) (DB IDO): Add object\_id where clause for icinga\_downtimehistory
* [#3345](https://github.com/icinga/icinga2/issues/3345) (API): Error handling in HttpClient/icinga-studio
* [#3338](https://github.com/icinga/icinga2/issues/3338) (CLI): Unused variable console\_type in consolecommand.cpp
* [#3336](https://github.com/icinga/icinga2/issues/3336) (API): Filtering by name doesn't work
* [#3335](https://github.com/icinga/icinga2/issues/3335) (API): HTTP keep-alive does not work with .NET WebClient
* [#3330](https://github.com/icinga/icinga2/issues/3330): Unused variable 'dobj' in configobject.tcpp
* [#3328](https://github.com/icinga/icinga2/issues/3328) (Configuration): Don't parse config files for branches not taken
* [#3315](https://github.com/icinga/icinga2/issues/3315) (Configuration): Crash in ConfigCompiler::RegisterZoneDir
* [#3302](https://github.com/icinga/icinga2/issues/3302) (API): Implement support for '.' when persisting modified attributes
* [#3301](https://github.com/icinga/icinga2/issues/3301): Fix formatting in mkclass
* [#3264](https://github.com/icinga/icinga2/issues/3264) (API): Do not let API users create objects with invalid names
* [#3250](https://github.com/icinga/icinga2/issues/3250) (API): Missing conf.d or zones.d cause parse failure
* [#3248](https://github.com/icinga/icinga2/issues/3248): Crash during cluster log replay
* [#3244](https://github.com/icinga/icinga2/issues/3244) (CLI): Color codes in console prompt break line editing
* [#3242](https://github.com/icinga/icinga2/issues/3242) (CLI): Crash in ScriptFrame::~ScriptFrame
* [#3227](https://github.com/icinga/icinga2/issues/3227) (CLI): console autocompletion should take into account parent classes' prototypes
* [#3215](https://github.com/icinga/icinga2/issues/3215) (API): win32 build: S\_ISDIR is undefined
* [#3205](https://github.com/icinga/icinga2/issues/3205) (Configuration): ScriptFrame's 'Self' attribute gets corrupted when an expression throws an exception
* [#3202](https://github.com/icinga/icinga2/issues/3202) (Configuration): Operator - should not work with "" and numbers
* [#3198](https://github.com/icinga/icinga2/issues/3198): Accessing field ID 0 \("prototype"\) fails
* [#3087](https://github.com/icinga/icinga2/issues/3087) (DB IDO): Fix incorrect datatype for the check\_source column in icinga\_statehistory table
* [#2974](https://github.com/icinga/icinga2/issues/2974) (Configuration): Remove incorrect 'ignore where' expression from 'ssh' apply example
* [#2939](https://github.com/icinga/icinga2/issues/2939) (Cluster): Wrong vars changed handler in api events
* [#2884](https://github.com/icinga/icinga2/issues/2884) (DB IDO): PostgreSQL schema sets default timestamps w/o time zone
* [#2879](https://github.com/icinga/icinga2/issues/2879): Compiler warnings with latest HEAD 5ac5f98
* [#2870](https://github.com/icinga/icinga2/issues/2870) (DB IDO): pgsql driver does not have latest mysql changes synced
* [#2863](https://github.com/icinga/icinga2/issues/2863) (Configuration): Crash in VMOps::FunctionCall
* [#2850](https://github.com/icinga/icinga2/issues/2850) (Configuration): Validation fails even though field is not required
* [#2824](https://github.com/icinga/icinga2/issues/2824) (DB IDO): Failed assertion in IdoMysqlConnection::FieldToEscapedString
* [#2808](https://github.com/icinga/icinga2/issues/2808) (Configuration): Make default notifications include users from host.vars.notification.mail.users
* [#2803](https://github.com/icinga/icinga2/issues/2803): Don't allow users to instantiate the StreamLogger class
* [#3663](https://github.com/icinga/icinga2/issues/3663) (Documentation): Update wxWidgets documentation for Icinga Studio
* [#3640](https://github.com/icinga/icinga2/issues/3640) (Documentation): Explain DELETE for config stages/packages
* [#3638](https://github.com/icinga/icinga2/issues/3638) (Documentation): Documentation for /v1/types
* [#3631](https://github.com/icinga/icinga2/issues/3631) (Documentation): Documentation for the script debugger
* [#3630](https://github.com/icinga/icinga2/issues/3630) (Documentation): Explain variable names for joined objects in filter expressions
* [#3629](https://github.com/icinga/icinga2/issues/3629) (Documentation): Documentation for /v1/console
* [#3628](https://github.com/icinga/icinga2/issues/3628) (Documentation): Mention wxWidget \(optional\) requirement in INSTALL.md
* [#3626](https://github.com/icinga/icinga2/issues/3626) (Documentation): Icinga 2 API Docs
* [#3621](https://github.com/icinga/icinga2/issues/3621) (Documentation): Documentation should not reference real host names
* [#3563](https://github.com/icinga/icinga2/issues/3563) (Documentation): Documentation: Reorganize Livestatus and alternative frontends
* [#3547](https://github.com/icinga/icinga2/issues/3547) (Documentation): Incorrect attribute name in the documentation
* [#3516](https://github.com/icinga/icinga2/issues/3516) (Documentation): Add documentation for apply+for in the language reference chapter
* [#3511](https://github.com/icinga/icinga2/issues/3511) (Documentation): Escaping $ not documented
* [#3500](https://github.com/icinga/icinga2/issues/3500) (Documentation): Add 'support' tracker to changelog.py
* [#3477](https://github.com/icinga/icinga2/issues/3477) (Documentation): Remove duplicated text in section "Apply Notifications to Hosts and Services"
* [#3426](https://github.com/icinga/icinga2/issues/3426) (Documentation): Add documentation for api-users.conf and app.conf
* [#3478](https://github.com/icinga/icinga2/issues/3478) (Documentation): Broken table layout in chapter 20
* [#3436](https://github.com/icinga/icinga2/issues/3436) (Documentation): Clarify on cluster/client naming convention and add troubleshooting section
* [#3430](https://github.com/icinga/icinga2/issues/3430) (Documentation): Find a better description for cluster communication requirements
* [#3409](https://github.com/icinga/icinga2/issues/3409) (Documentation): Windows Check Update -\> Access denied
* [#3408](https://github.com/icinga/icinga2/issues/3408) (Documentation): Improve documentation for check\_memory
* [#3406](https://github.com/icinga/icinga2/issues/3406) (Documentation): Update graphing section in the docs
* [#3402](https://github.com/icinga/icinga2/issues/3402) (Documentation): Update debug docs for core dumps and full backtraces
* [#3351](https://github.com/icinga/icinga2/issues/3351) (Documentation): Command Execution Bridge: Use of same endpoint names in examples for a better understanding
* [#3092](https://github.com/icinga/icinga2/issues/3092) (Documentation): Add FreeBSD setup to getting started
* [#3379](https://github.com/icinga/icinga2/issues/3379) (Installation): Rather use unique SID when granting rights for folders in NSIS on Windows Client
* [#3045](https://github.com/icinga/icinga2/issues/3045) (Packages): icinga2 ido mysql misspelled database username
* [#3254](https://github.com/icinga/icinga2/issues/3254) (Livestatus): Use an empty dictionary for the 'this' scope when executing commands with Livestatus
* [#3253](https://github.com/icinga/icinga2/issues/3253): Implement the Dictionary\#keys method
* [#3206](https://github.com/icinga/icinga2/issues/3206): Implement Dictionary\#get and Array\#get
* [#3170](https://github.com/icinga/icinga2/issues/3170) (Configuration): Adding "-r" parameter to the check\_load command for dividing the load averages by the number of CPUs.
* [#3305](https://github.com/icinga/icinga2/issues/3305) (Configuration): Icinga2 - too many open files - Exception
* [#3299](https://github.com/icinga/icinga2/issues/3299): Utility::Glob on Windows doesn't support wildcards in all but the last path component
* [#3292](https://github.com/icinga/icinga2/issues/3292): Serial number field is not properly initialized for CA certificates
* [#3279](https://github.com/icinga/icinga2/issues/3279) (DB IDO): Add missing category for IDO query
* [#3266](https://github.com/icinga/icinga2/issues/3266) (Plugins): Default disk checks on Windows fail because check\_disk doesn't support -K
* [#3260](https://github.com/icinga/icinga2/issues/3260): First SOFT state is recognized as second SOFT state
* [#3255](https://github.com/icinga/icinga2/issues/3255) (Cluster): Warning about invalid API function icinga::Hello
* [#3241](https://github.com/icinga/icinga2/issues/3241): Agent freezes when the check returns massive output
* [#3222](https://github.com/icinga/icinga2/issues/3222) (Configuration): Dict initializer incorrectly re-initializes field that is set to an empty string
* [#3211](https://github.com/icinga/icinga2/issues/3211) (Configuration): Operator + is inconsistent when used with empty and non-empty strings
* [#3200](https://github.com/icinga/icinga2/issues/3200) (CLI): icinga2 node wizard don't take zone\_name input
* [#3199](https://github.com/icinga/icinga2/issues/3199): Trying to set a field for a non-object instance fails
* [#3196](https://github.com/icinga/icinga2/issues/3196) (Cluster): Add log for missing EventCommand for command\_endpoints
* [#3194](https://github.com/icinga/icinga2/issues/3194): Set correct X509 version for certificates
* [#3149](https://github.com/icinga/icinga2/issues/3149) (CLI): missing config warning on empty port in endpoints
* [#3010](https://github.com/icinga/icinga2/issues/3010) (Cluster): cluster check w/ immediate parent and child zone endpoints
* [#2867](https://github.com/icinga/icinga2/issues/2867): Missing DEL\_DOWNTIME\_BY\_HOST\_NAME command required by Classic UI 1.x
* [#2352](https://github.com/icinga/icinga2/issues/2352) (Cluster): Reload does not work on Windows
* [#3118](https://github.com/icinga/icinga2/issues/3118) (Cluster): Generated certificates cannot be verified w/ openssl 0.9.8j on SLES 11
* [#3098](https://github.com/icinga/icinga2/issues/3098) (Cluster): Add log message for discarded cluster events \(e.g. from unauthenticated clients\)
* [#3097](https://github.com/icinga/icinga2/issues/3097): Fix stability issues in the TlsStream/Stream classes
* [#3088](https://github.com/icinga/icinga2/issues/3088) (Cluster): Windows client w/ command\_endpoint broken with $nscp\_path$ and NscpPath detection
* [#3084](https://github.com/icinga/icinga2/issues/3084) (CLI): node setup: indent accept\_config and accept\_commands
* [#3074](https://github.com/icinga/icinga2/issues/3074) (Notifications): Functions can't be specified as command arguments
* [#2979](https://github.com/icinga/icinga2/issues/2979) (CLI): port empty when using icinga2 node wizard
* [#3123](https://github.com/icinga/icinga2/issues/3123) (Packages): Require gcc47-c++ on sles11 from SLES software development kit repository
* [#3122](https://github.com/icinga/icinga2/issues/3122) (Packages): mysql-devel is not available in sles11sp3
* [#3081](https://github.com/icinga/icinga2/issues/3081) (Installation): changelog.py: Allow to define project, make custom\_fields and changes optional
* [#3073](https://github.com/icinga/icinga2/issues/3073) (Installation): Enhance changelog.py with wordpress blogpost output
* [#2651](https://github.com/icinga/icinga2/issues/2651) (Packages): Add Icinga 2 to Chocolatey Windows Repository
* [#3051](https://github.com/icinga/icinga2/issues/3051) (Plugins): plugins-contrib.d/databases.conf: wrong argument for mssql\_health
* [#3043](https://github.com/icinga/icinga2/issues/3043) (Compat): Multiline vars are broken in objects.cache output
* [#3039](https://github.com/icinga/icinga2/issues/3039) (Compat): Multi line output not correctly handled from compat channels
* [#3007](https://github.com/icinga/icinga2/issues/3007) (Configuration): Disk and 'icinga' services are missing in the default Windows config
* [#3006](https://github.com/icinga/icinga2/issues/3006) (Configuration): Some checks in the default Windows configuration fail
* [#2986](https://github.com/icinga/icinga2/issues/2986) (DB IDO): Missing custom attributes in backends if name is equal to object attribute
* [#2952](https://github.com/icinga/icinga2/issues/2952) (DB IDO): Incorrect type and state filter mapping for User objects in DB IDO
* [#2951](https://github.com/icinga/icinga2/issues/2951) (DB IDO): Downtimes are always "fixed"
* [#2945](https://github.com/icinga/icinga2/issues/2945) (DB IDO): Possible DB deadlock
* [#2940](https://github.com/icinga/icinga2/issues/2940) (Configuration): node update-config reports critical and warning
* [#2935](https://github.com/icinga/icinga2/issues/2935) (Configuration): WIN: syslog is not an enable-able feature in windows
* [#2894](https://github.com/icinga/icinga2/issues/2894) (DB IDO): Wrong timestamps w/ historical data replay in DB IDO
* [#2839](https://github.com/icinga/icinga2/issues/2839) (CLI): Node wont connect properly to master if host is is not set for Endpoint on new installs
* [#2836](https://github.com/icinga/icinga2/issues/2836): Icinga2 --version: Error showing Distribution
* [#2819](https://github.com/icinga/icinga2/issues/2819) (Configuration): Syntax Highlighting: host.address vs host.add
* [#3049](https://github.com/icinga/icinga2/issues/3049) (Documentation): Update documentation for escape sequences
* [#3036](https://github.com/icinga/icinga2/issues/3036) (Documentation): Explain string concatenation in objects by real-world example
* [#3035](https://github.com/icinga/icinga2/issues/3035) (Documentation): Use a more simple example for passing command parameters
* [#3033](https://github.com/icinga/icinga2/issues/3033) (Documentation): Add local variable scope for \*Command to documentation \(host, service, etc\)
* [#3032](https://github.com/icinga/icinga2/issues/3032) (Documentation): Add typeof in 'assign/ignore where' expression as example
* [#3030](https://github.com/icinga/icinga2/issues/3030) (Documentation): Add examples for function usage in "set\_if" and "command" attributes
* [#3024](https://github.com/icinga/icinga2/issues/3024) (Documentation): Best practices: cluster config sync
* [#3017](https://github.com/icinga/icinga2/issues/3017) (Documentation): Update service apply for documentation
* [#3015](https://github.com/icinga/icinga2/issues/3015) (Documentation): Typo in Configuration Best Practice
* [#2966](https://github.com/icinga/icinga2/issues/2966) (Documentation): Include Windows support details in the documentation
* [#2965](https://github.com/icinga/icinga2/issues/2965) (Documentation): ITL Documentation: Add a link for passing custom attributes as command parameters
* [#2950](https://github.com/icinga/icinga2/issues/2950) (Documentation): Missing "\)" in last Apply Rules example
* [#2279](https://github.com/icinga/icinga2/issues/2279) (Documentation): Add documentation and CheckCommands for the windows plugins
* [#2886](https://github.com/icinga/icinga2/issues/2886): Acknowledging problems w/ expire time does not add the expiry information to the related comment for IDO and compat
* [#2883](https://github.com/icinga/icinga2/issues/2883) (Notifications): Multiple log messages w/ "Attempting to send notifications for notification object"
* [#2882](https://github.com/icinga/icinga2/issues/2882) (DB IDO): scheduled\_downtime\_depth column is not reset when a downtime ends or when a downtime is being removed
* [#2881](https://github.com/icinga/icinga2/issues/2881) (DB IDO): Downtimes which have been triggered are not properly recorded in the database
* [#2878](https://github.com/icinga/icinga2/issues/2878) (DB IDO): Don't update scheduleddowntime table w/ trigger\_time column when only adding a downtime
* [#2855](https://github.com/icinga/icinga2/issues/2855): Fix complexity class for Dictionary::Get
* [#2853](https://github.com/icinga/icinga2/issues/2853) (CLI): Node wizard should only accept 'y', 'n', 'Y' and 'N' as answers for boolean questions
* [#2842](https://github.com/icinga/icinga2/issues/2842) (Configuration): Default max\_check\_attempts should be lower for hosts than for services
* [#2840](https://github.com/icinga/icinga2/issues/2840) (Configuration): Validation errors for time ranges which span the DST transition
* [#2827](https://github.com/icinga/icinga2/issues/2827) (Configuration): logrotate does not work
* [#2801](https://github.com/icinga/icinga2/issues/2801) (Cluster): command\_endpoint check\_results are not replicated to other endpoints in the same zone
* [#2828](https://github.com/icinga/icinga2/issues/2828): Array in command arguments doesn't work
* [#2818](https://github.com/icinga/icinga2/issues/2818) (Configuration): Local variables in "apply for" are overridden
* [#2816](https://github.com/icinga/icinga2/issues/2816) (CLI): Segmentation fault when executing "icinga2 pki new-cert"
* [#2812](https://github.com/icinga/icinga2/issues/2812) (Configuration): Return doesn't work inside loops
* [#2807](https://github.com/icinga/icinga2/issues/2807) (Configuration): Figure out why command validators are not triggered
* [#2778](https://github.com/icinga/icinga2/issues/2778) (Configuration): object Notification + apply Service fails with error "...refers to service which doesn't exist"
* [#2772](https://github.com/icinga/icinga2/issues/2772) (Plugins): Plugin "check\_http" is missing in Windows environments
* [#2768](https://github.com/icinga/icinga2/issues/2768) (Configuration): Add missing keywords in the syntax highlighting files
* [#2760](https://github.com/icinga/icinga2/issues/2760): Don't ignore extraneous arguments for functions
* [#2753](https://github.com/icinga/icinga2/issues/2753) (DB IDO): Don't update custom vars for each status update
* [#2752](https://github.com/icinga/icinga2/issues/2752): startup.log broken when the DB schema needs an update
* [#2749](https://github.com/icinga/icinga2/issues/2749) (Configuration): Missing config validator for command arguments 'set\_if'
* [#2718](https://github.com/icinga/icinga2/issues/2718) (Configuration): Update syntax highlighting for 2.3 features
* [#2557](https://github.com/icinga/icinga2/issues/2557) (Configuration): Improve error message for invalid field access
* [#2548](https://github.com/icinga/icinga2/issues/2548) (Configuration): Fix VIM syntax highlighting for comments
* [#2773](https://github.com/icinga/icinga2/issues/2773) (Documentation): Typo in doc library-reference
* [#2765](https://github.com/icinga/icinga2/issues/2765) (Documentation): Fix a typo in the documentation of ICINGA2\_WITH\_MYSQL and ICINGA2\_WITH\_PGSQL
* [#2756](https://github.com/icinga/icinga2/issues/2756) (Documentation): Add "access objects at runtime" examples to advanced section
* [#2738](https://github.com/icinga/icinga2/issues/2738) (Documentation): Update documentation for "apply for" rules
* [#2501](https://github.com/icinga/icinga2/issues/2501) (Documentation): Re-order the object types in alphabetical order
Please note that this version fixes the default thresholds for the disk check which were inadvertently broken in 2.3.0; if you're using percent-based custom thresholds you will need to add the '%' sign to your custom attributes
* [#2704](https://github.com/icinga/icinga2/issues/2704): Support the SNI TLS extension
* [#2702](https://github.com/icinga/icinga2/issues/2702): Add validator for time ranges in ScheduledDowntime objects
* [#2701](https://github.com/icinga/icinga2/issues/2701): Remove macro argument for IMPL\_TYPE\_LOOKUP
* [#2696](https://github.com/icinga/icinga2/issues/2696): Include GDB backtrace in crash reports
* [#2678](https://github.com/icinga/icinga2/issues/2678) (Configuration): Add support for else-if
* [#2663](https://github.com/icinga/icinga2/issues/2663) (Livestatus): Change Livestatus query log level to 'notice'
* [#2657](https://github.com/icinga/icinga2/issues/2657) (Cluster): Show slave lag for the cluster-zone check
* [#2635](https://github.com/icinga/icinga2/issues/2635) (Configuration): introduce time dependent variable values
* [#2634](https://github.com/icinga/icinga2/issues/2634) (Cluster): Add the ability to use a CA certificate as a way of verifying hosts for CSR autosigning
* [#2609](https://github.com/icinga/icinga2/issues/2609): udp check command is missing arguments.
* [#2604](https://github.com/icinga/icinga2/issues/2604) (CLI): Backup certificate files in 'node setup'
* [#2429](https://github.com/icinga/icinga2/issues/2429) (Configuration): Figure out how variable scopes should work
* [#2426](https://github.com/icinga/icinga2/issues/2426) (Configuration): Implement a way to call methods on objects
* [#2421](https://github.com/icinga/icinga2/issues/2421) (Configuration): Implement a way to remove dictionary keys
* [#2418](https://github.com/icinga/icinga2/issues/2418) (Plugins): Windows plugins should behave like their Linux cousins
* [#2408](https://github.com/icinga/icinga2/issues/2408) (Configuration): ConfigCompiler::HandleInclude should return an inline dictionary
* [#2407](https://github.com/icinga/icinga2/issues/2407) (Configuration): Implement a boolean sub-type for the Value class
* [#2405](https://github.com/icinga/icinga2/issues/2405): Disallow calling strings as functions
* [#2396](https://github.com/icinga/icinga2/issues/2396) (Configuration): Evaluate usage of function\(\)
* [#2391](https://github.com/icinga/icinga2/issues/2391): Improve output of ToString for type objects
* [#2390](https://github.com/icinga/icinga2/issues/2390): Register type objects as global variables
* [#2367](https://github.com/icinga/icinga2/issues/2367) (Configuration): The lexer shouldn't accept escapes for characters which don't have to be escaped
* [#2365](https://github.com/icinga/icinga2/issues/2365) (DB IDO): Implement socket\_path attribute for the IdoMysqlConnection class
* [#2355](https://github.com/icinga/icinga2/issues/2355) (Configuration): Implement official support for user-defined functions and the "for" keyword
* [#2351](https://github.com/icinga/icinga2/issues/2351) (Plugins): Windows agent is missing the standard plugin check\_ping
* [#2324](https://github.com/icinga/icinga2/issues/2324) (Configuration): Implement the "if" and "else" keywords
* [#2323](https://github.com/icinga/icinga2/issues/2323) (Configuration): Figure out whether Number + String should implicitly convert the Number argument to a string
* [#2322](https://github.com/icinga/icinga2/issues/2322) (Configuration): Make the config parser thread-safe
* [#2318](https://github.com/icinga/icinga2/issues/2318) (Configuration): Implement the % operator
* [#2312](https://github.com/icinga/icinga2/issues/2312): Move the cast functions into libbase
* [#2310](https://github.com/icinga/icinga2/issues/2310) (Configuration): Implement unit tests for the config parser
* [#2304](https://github.com/icinga/icinga2/issues/2304): Implement an option to disable building the Demo component
* [#2303](https://github.com/icinga/icinga2/issues/2303): Implement an option to disable building the Livestatus module
* [#2300](https://github.com/icinga/icinga2/issues/2300) (Notifications): Implement the DISABLE\_HOST\_SVC\_NOTIFICATIONS and ENABLE\_HOST\_SVC\_NOTIFICATIONS commands
* [#2298](https://github.com/icinga/icinga2/issues/2298) (Plugins): Missing check\_disk output on Windows
* [#2294](https://github.com/icinga/icinga2/issues/2294) (Configuration): Implement an AST Expression for T\_CONST
* [#2290](https://github.com/icinga/icinga2/issues/2290): Rename \_DEBUG to I2\_DEBUG
* [#2286](https://github.com/icinga/icinga2/issues/2286) (Configuration): Redesign how stack frames work for scripts
* [#2265](https://github.com/icinga/icinga2/issues/2265): ConfigCompiler::Compile\* should return an AST node
* [#2264](https://github.com/icinga/icinga2/issues/2264) (Configuration): ConfigCompiler::HandleInclude\* should return an AST node
* [#2262](https://github.com/icinga/icinga2/issues/2262) (CLI): Add an option that hides CLI commands
* [#2260](https://github.com/icinga/icinga2/issues/2260) (Configuration): Evaluate apply/object rules when the parent objects are created
* [#2211](https://github.com/icinga/icinga2/issues/2211) (Configuration): Variable from for loop not usable in assign statement
* [#2186](https://github.com/icinga/icinga2/issues/2186) (Configuration): Access object runtime attributes in custom vars & command arguments
* [#2176](https://github.com/icinga/icinga2/issues/2176) (Configuration): Please add labels in SNMP checks
* [#2697](https://github.com/icinga/icinga2/issues/2697) (Configuration): Memory leak in Expression::GetReference
* [#2695](https://github.com/icinga/icinga2/issues/2695) (Configuration): else if doesn't work without an else branch
* [#2693](https://github.com/icinga/icinga2/issues/2693): Check whether the new TimePeriod validator is working as expected
* [#2692](https://github.com/icinga/icinga2/issues/2692) (CLI): Resource leak in TroubleshootCommand::ObjectInfo
* [#2691](https://github.com/icinga/icinga2/issues/2691) (CLI): Resource leak in TroubleshootCommand::Run
* [#2689](https://github.com/icinga/icinga2/issues/2689): Check if scheduled downtimes work properly
* [#2688](https://github.com/icinga/icinga2/issues/2688) (Plugins): check\_memory tool shows incorrect memory size on windows
* [#2685](https://github.com/icinga/icinga2/issues/2685) (Cluster): Don't accept config updates for zones for which we have an authoritative copy of the config
* [#2684](https://github.com/icinga/icinga2/issues/2684) (Cluster): Icinga crashed on SocketEvent
* [#2683](https://github.com/icinga/icinga2/issues/2683) (Cluster): Crash in ApiClient::TimeoutTimerHandler
* [#2680](https://github.com/icinga/icinga2/issues/2680): Deadlock in TlsStream::Handshake
* [#2679](https://github.com/icinga/icinga2/issues/2679) (Cluster): Deadlock in ApiClient::Disconnect
* [#2677](https://github.com/icinga/icinga2/issues/2677): Crash in SocketEvents::Register
* [#2676](https://github.com/icinga/icinga2/issues/2676) (Livestatus): Windows build fails
* [#2674](https://github.com/icinga/icinga2/issues/2674) (DB IDO): Hosts: process\_performance\_data = 0 in database even though enable\_perfdata = 1 in config
* [#2671](https://github.com/icinga/icinga2/issues/2671) (DB IDO): Crash in DbObject::SendStatusUpdate
* [#2670](https://github.com/icinga/icinga2/issues/2670) (Compat): Valgrind warning for ExternalCommandListener::CommandPipeThread
* [#2669](https://github.com/icinga/icinga2/issues/2669): Crash in ApiEvents::RepositoryTimerHandler
* [#2665](https://github.com/icinga/icinga2/issues/2665) (Livestatus): livestatus limit header not working
* [#2660](https://github.com/icinga/icinga2/issues/2660) (Configuration): apply-for incorrectly converts loop var to string
* [#2593](https://github.com/icinga/icinga2/issues/2593) (Compat): last\_hard\_state missing in StatusDataWriter
* [#2589](https://github.com/icinga/icinga2/issues/2589) (Configuration): Stacktrace on Endpoint not belonging to a zone or multiple zones
* [#2586](https://github.com/icinga/icinga2/issues/2586): Icinga2 master doesn't change check-status when "accept\_commands = true" is not set at client node
* [#2579](https://github.com/icinga/icinga2/issues/2579) (Configuration): Apply rule '' for host does not match anywhere!
* [#2572](https://github.com/icinga/icinga2/issues/2572) (Cluster): Incorrectly formatted timestamp in .timestamp file
* [#2570](https://github.com/icinga/icinga2/issues/2570): Crash in ScheduledDowntime::CreateNextDowntime
* [#2569](https://github.com/icinga/icinga2/issues/2569): PidPath, VarsPath, ObjectsPath and StatePath no longer read from init.conf
* [#2566](https://github.com/icinga/icinga2/issues/2566) (Configuration): Don't allow comparison of strings and numbers
* [#2562](https://github.com/icinga/icinga2/issues/2562) (Cluster): ApiListener::ReplayLog shouldn't hold mutex lock during call to Socket::Poll
* [#2560](https://github.com/icinga/icinga2/issues/2560): notify flag is ignored in ACKNOWLEDGE\_\*\_PROBLEM commands
* [#2559](https://github.com/icinga/icinga2/issues/2559) (DB IDO): Duplicate entry on icinga\_hoststatus
* [#2556](https://github.com/icinga/icinga2/issues/2556) (CLI): Running icinga2 command as non privilged user raises error
* [#2551](https://github.com/icinga/icinga2/issues/2551) (Livestatus): Livestatus operator =~ is not case-insensitive
* [#2542](https://github.com/icinga/icinga2/issues/2542) (CLI): icinga2 node wizard: Create backups of certificates
* [#2539](https://github.com/icinga/icinga2/issues/2539) (Cluster): Report missing command objects on remote agent
* [#2533](https://github.com/icinga/icinga2/issues/2533) (Cluster): Problems using command\_endpoint inside HA zone
* [#2529](https://github.com/icinga/icinga2/issues/2529) (CLI): CLI console fails to report errors in included files
* [#2526](https://github.com/icinga/icinga2/issues/2526) (Configuration): Deadlock when accessing loop variable inside of the loop
* [#2525](https://github.com/icinga/icinga2/issues/2525) (Configuration): Lexer term for T\_ANGLE\_STRING is too aggressive
* [#2513](https://github.com/icinga/icinga2/issues/2513) (CLI): icinga2 node update should not write config for blacklisted zones/host
* [#2503](https://github.com/icinga/icinga2/issues/2503) (CLI): Argument auto-completion doesn't work for short options
* [#2502](https://github.com/icinga/icinga2/issues/2502): group assign fails with bad lexical cast when evaluating rules
* [#2497](https://github.com/icinga/icinga2/issues/2497): Exception on missing config files
* [#2494](https://github.com/icinga/icinga2/issues/2494) (Livestatus): Error messages when stopping Icinga
* [#2452](https://github.com/icinga/icinga2/issues/2452) (Cluster): Agent checks fail when there's already a host with the same name
* [#2448](https://github.com/icinga/icinga2/issues/2448) (Configuration): User::ValidateFilters isn't being used
* [#2447](https://github.com/icinga/icinga2/issues/2447) (Configuration): ConfigCompilerContext::WriteObject crashes after ConfigCompilerContext::FinishObjectsFile was called
* [#2445](https://github.com/icinga/icinga2/issues/2445) (Configuration): segfault on startup
* [#2442](https://github.com/icinga/icinga2/issues/2442) (DB IDO): POSTGRES IDO: invalid syntax for integer: "true" while trying to update table icinga\_hoststatus
* [#2441](https://github.com/icinga/icinga2/issues/2441) (CLI): console: Don't repeat line when we're reporting an error for the last line
* [#2435](https://github.com/icinga/icinga2/issues/2435) (Configuration): Location info for strings is incorrect
* [#2434](https://github.com/icinga/icinga2/issues/2434) (Configuration): Setting an attribute on an r-value fails
* [#2433](https://github.com/icinga/icinga2/issues/2433) (Configuration): Confusing error message when trying to set a field on a string
* [#2431](https://github.com/icinga/icinga2/issues/2431) (Configuration): icinga 2 Config Error needs to be more verbose
* [#2428](https://github.com/icinga/icinga2/issues/2428) (Configuration): Debug visualizer for the Value class is broken
* [#2427](https://github.com/icinga/icinga2/issues/2427) (Configuration): if doesn't work for non-boolean arguments
* [#2423](https://github.com/icinga/icinga2/issues/2423) (Configuration): Require at least one user for notification objects \(user or as member of user\_groups\)
* [#2419](https://github.com/icinga/icinga2/issues/2419) (Configuration): Confusing error message for import
* [#2410](https://github.com/icinga/icinga2/issues/2410): The Boolean type change broke set\_if
* [#2422](https://github.com/icinga/icinga2/issues/2422) (Documentation): Setting a dictionary key to null does not cause the key/value to be removed
* [#2412](https://github.com/icinga/icinga2/issues/2412) (Documentation): Update host examples in Dependencies for Network Reachability documentation
* [#2409](https://github.com/icinga/icinga2/issues/2409) (Documentation): Wrong command in documentation for installing Icinga 2 pretty printers.
* [#2404](https://github.com/icinga/icinga2/issues/2404) (Documentation): Livestatus: Replace unixcat with nc -U
* [#2180](https://github.com/icinga/icinga2/issues/2180) (Documentation): Documentation: Add note on default notification interval in getting started notifications.conf
* [#2340](https://github.com/icinga/icinga2/issues/2340) (CLI): Segfault in CA handling
* [#2328](https://github.com/icinga/icinga2/issues/2328) (Cluster): Verify if master radio box is disabled in the Windows wizard
* [#2311](https://github.com/icinga/icinga2/issues/2311) (Configuration): !in operator returns incorrect result
* [#2293](https://github.com/icinga/icinga2/issues/2293) (Configuration): Objects created with node update-config can't be seen in Classic UI
* [#2288](https://github.com/icinga/icinga2/issues/2288) (Cluster): Incorrect error message for localhost
* [#2282](https://github.com/icinga/icinga2/issues/2282) (Cluster): Icinga2 node add failed with unhandled exception
* [#2273](https://github.com/icinga/icinga2/issues/2273): Restart Icinga - Error Restoring program state from file '/var/lib/icinga2/icinga2.state'
* [#2272](https://github.com/icinga/icinga2/issues/2272) (Cluster): Windows wizard is missing --zone argument
* [#2271](https://github.com/icinga/icinga2/issues/2271) (Cluster): Windows wizard uses incorrect CLI command
* [#2267](https://github.com/icinga/icinga2/issues/2267) (Cluster): Built-in commands shouldn't be run on the master instance in remote command execution mode
* [#2207](https://github.com/icinga/icinga2/issues/2207) (Livestatus): livestatus large amount of submitting unix socket command results in broken pipes
* [#2344](https://github.com/icinga/icinga2/issues/2344) (Documentation): Documentation: Explain how unresolved macros are handled
* [#2343](https://github.com/icinga/icinga2/issues/2343) (Documentation): Document how arrays in macros work
* [#2336](https://github.com/icinga/icinga2/issues/2336) (Documentation): Wrong information in section "Linux Client Setup Wizard for Remote Monitoring"
* [#2275](https://github.com/icinga/icinga2/issues/2275) (Documentation): 2.2.0 has out-of-date icinga2 man page
* [#2251](https://github.com/icinga/icinga2/issues/2251) (Documentation): object and template with the same name generate duplicate object error
* [#2189](https://github.com/icinga/icinga2/issues/2189) (Configuration): Refactor AST into multiple classes
* [#2187](https://github.com/icinga/icinga2/issues/2187) (Configuration): Implement support for arbitrarily complex indexers
* [#2184](https://github.com/icinga/icinga2/issues/2184) (Configuration): Generate objects using apply with foreach in arrays or dictionaries \(key =\> value\)
* [#2183](https://github.com/icinga/icinga2/issues/2183) (Configuration): Support dictionaries in custom attributes
* [#2182](https://github.com/icinga/icinga2/issues/2182) (Cluster): Execute remote commands on the agent w/o local objects by passing custom attributes
* [#2206](https://github.com/icinga/icinga2/issues/2206): Plugin execution on Windows does not work
* [#2205](https://github.com/icinga/icinga2/issues/2205): Compilation Error with boost 1.56 under Windows
* [#2201](https://github.com/icinga/icinga2/issues/2201): Exception when executing check
* [#2200](https://github.com/icinga/icinga2/issues/2200) (Configuration): Nested templates do not work \(anymore\)
* [#2199](https://github.com/icinga/icinga2/issues/2199) (CLI): Typo in output of 'icinga2 object list'
* [#2197](https://github.com/icinga/icinga2/issues/2197) (Notifications): only notify users on recovery which have been notified before \(not-ok state\)
* [#2128](https://github.com/icinga/icinga2/issues/2128) (CLI): Cli: Node Setup/Wizard running as root must chown\(\) generated files to icinga daemon user
* [#2127](https://github.com/icinga/icinga2/issues/2127) (Configuration): can't assign Service to Host in nested HostGroup
* [#2125](https://github.com/icinga/icinga2/issues/2125) (Metrics): Performance data via API is broken
* [#2116](https://github.com/icinga/icinga2/issues/2116) (CLI): Cli command: Repository should validate if object exists before add/remove
* [#2106](https://github.com/icinga/icinga2/issues/2106) (Cluster): When replaying logs the secobj attribute is ignored
* [#2083](https://github.com/icinga/icinga2/issues/2083): CMake warnings on OS X
* [#2077](https://github.com/icinga/icinga2/issues/2077) (CLI): CLI: Auto-completion with colliding arguments
* [#2070](https://github.com/icinga/icinga2/issues/2070) (DB IDO): CLI / MySQL error during vagrant provisioning
* [#2068](https://github.com/icinga/icinga2/issues/2068) (CLI): pki new-cert doesn't check whether the files were successfully written
* [#2065](https://github.com/icinga/icinga2/issues/2065) (DB IDO): Schema upgrade files are missing in /usr/share/icinga2-ido-{mysql,pgsql}
* [#2063](https://github.com/icinga/icinga2/issues/2063) (CLI): Cli commands: Integers in arrays are printed incorrectly
* [#2057](https://github.com/icinga/icinga2/issues/2057) (CLI): failed en/disable feature should return error
* [#2056](https://github.com/icinga/icinga2/issues/2056) (CLI): Commands are auto-completed when they shouldn't be
* [#2051](https://github.com/icinga/icinga2/issues/2051) (Configuration): custom attribute name 'type' causes empty vars dictionary
* [#2048](https://github.com/icinga/icinga2/issues/2048) (Compat): Fix reading perfdata in compat/checkresultreader
* [#2042](https://github.com/icinga/icinga2/issues/2042) (Plugins): Setting snmp\_v2 can cause snmp-manubulon-command derived checks to fail
* [#2038](https://github.com/icinga/icinga2/issues/2038) (Configuration): snmp-load checkcommand has a wrong "-T" param value
* [#2034](https://github.com/icinga/icinga2/issues/2034) (Configuration): Importing a CheckCommand in a NotificationCommand results in an exception without stacktrace.
* [#2029](https://github.com/icinga/icinga2/issues/2029) (Configuration): Error messages for invalid imports missing
* [#2026](https://github.com/icinga/icinga2/issues/2026) (Configuration): config parser crashes on unknown attribute in assign
* [#2006](https://github.com/icinga/icinga2/issues/2006) (Configuration): snmp-load checkcommand has wrong threshold syntax
* [#2005](https://github.com/icinga/icinga2/issues/2005) (Metrics): icinga2 returns exponentail perfdata format with check\_nt
* [#2004](https://github.com/icinga/icinga2/issues/2004) (Metrics): Icinga2 changes perfdata order and removes maximum
* [#2001](https://github.com/icinga/icinga2/issues/2001) (Notifications): default value for "disable\_notifications" in service dependencies is set to "false"
* [#1950](https://github.com/icinga/icinga2/issues/1950) (Configuration): Typo for "HTTP Checks" match in groups.conf
* [#1720](https://github.com/icinga/icinga2/issues/1720) (Notifications): delaying notifications with times.begin should postpone first notification into that window
* [#2218](https://github.com/icinga/icinga2/issues/2218) (Documentation): Documentation: Update Icinga Web 2 installation
* [#2191](https://github.com/icinga/icinga2/issues/2191) (Documentation): link missing in documentation about livestatus
* [#2175](https://github.com/icinga/icinga2/issues/2175) (Documentation): Documentation for arrays & dictionaries in custom attributes and their usage in apply rules for
* [#2160](https://github.com/icinga/icinga2/issues/2160) (Documentation): Documentation: Explain how to manage agent config in central repository
* [#2150](https://github.com/icinga/icinga2/issues/2150) (Documentation): Documentation: Move troubleshooting after the getting started chapter
* [#2143](https://github.com/icinga/icinga2/issues/2143) (Documentation): Documentation: Revamp getting started with 1 host and multiple \(service\) applies
* [#2037](https://github.com/icinga/icinga2/issues/2037) (Documentation): Documentation: Wrong check command for snmp-int\(erface\)
* [#2033](https://github.com/icinga/icinga2/issues/2033) (Documentation): Docs: Default command timeout is 60s not 5m
* [#2028](https://github.com/icinga/icinga2/issues/2028) (Documentation): Icinga2 docs: link supported operators from sections about apply rules
* [#2024](https://github.com/icinga/icinga2/issues/2024) (Documentation): Documentation: Add support for locally-scoped variables for host/service in applied Dependency
* [#2013](https://github.com/icinga/icinga2/issues/2013) (Documentation): Documentation: Add host/services variables in apply rules
* [#1972](https://github.com/icinga/icinga2/issues/1972) (Documentation): Document how to use multiple assign/ignore statements with logical "and" & "or"
* [#2253](https://github.com/icinga/icinga2/issues/2253) (Packages): Conditionally enable MySQL and PostgresSQL, add support for FreeBSD and DragonFlyBSD
* [#2236](https://github.com/icinga/icinga2/issues/2236) (Packages): Enable parallel builds for the Debian package
* [#2147](https://github.com/icinga/icinga2/issues/2147) (Packages): Feature `checker' is not enabled when installing Icinga 2 using our lates RPM snapshot packages
* [#2136](https://github.com/icinga/icinga2/issues/2136) (Packages): Build fails on RHEL 6.6
* [#2123](https://github.com/icinga/icinga2/issues/2123) (Packages): Post-update script \(migrate-hosts\) isn't run on RPM-based distributions
* [#2095](https://github.com/icinga/icinga2/issues/2095) (Packages): Unity build fails on RHEL 5
* [#2058](https://github.com/icinga/icinga2/issues/2058) (Packages): Debian package root permissions interfere with icinga2 cli commands as icinga user
* [#1985](https://github.com/icinga/icinga2/issues/1985) (Documentation): clarify on db ido upgrades
* [#1962](https://github.com/icinga/icinga2/issues/1962) (Documentation): Extend documentation for icinga-web on Debian systems
* [#1949](https://github.com/icinga/icinga2/issues/1949) (Documentation): Explain event commands and their integration by a real life example \(httpd restart via ssh\)
* [#1927](https://github.com/icinga/icinga2/issues/1927) (Documentation): Document how to use @ to escape keywords
* [#1944](https://github.com/icinga/icinga2/issues/1944) (Packages): service icinga2 status - prints cat error if the service is stopped
* [#1941](https://github.com/icinga/icinga2/issues/1941) (Packages): icinga2 init-script terminates with exit code 0 if $DAEMON is not in place or not executable
* [#1939](https://github.com/icinga/icinga2/issues/1939) (Packages): Enable unity build for RPM/Debian packages
* [#1937](https://github.com/icinga/icinga2/issues/1937) (Packages): Figure out a better way to set the version for snapshot builds
* [#1916](https://github.com/icinga/icinga2/issues/1916): Build fails with Boost 1.56
* [#1903](https://github.com/icinga/icinga2/issues/1903) (Cluster): Host and service checks stuck in "pending" when hostname = localhost a parent/satellite setup
* [#1902](https://github.com/icinga/icinga2/issues/1902): Commands are processed multiple times
* [#1896](https://github.com/icinga/icinga2/issues/1896): check file permissions in /var/cache/icinga2
* [#1884](https://github.com/icinga/icinga2/issues/1884): External command pipe: Too many open files
* [#1819](https://github.com/icinga/icinga2/issues/1819): ExternalCommandListener fails open pipe: Too many open files
* [#1924](https://github.com/icinga/icinga2/issues/1924) (Documentation): add example selinux policy for external command pipe
* [#1915](https://github.com/icinga/icinga2/issues/1915) (Documentation): how to add a new cluster node
* [#1913](https://github.com/icinga/icinga2/issues/1913) (Documentation): Keyword "required" used inconsistently for host and service "icon\_image\*" attributes
* [#1757](https://github.com/icinga/icinga2/issues/1757) (DB IDO): NULL vs empty string
* [#1752](https://github.com/icinga/icinga2/issues/1752) (Cluster): Infinite loop in TlsStream::Close
* [#1744](https://github.com/icinga/icinga2/issues/1744) (DB IDO): Two Custom Variables with same name, but Upper/Lowercase creating IDO duplicate entry
* [#1741](https://github.com/icinga/icinga2/issues/1741): Command pipe blocks when trying to open it more than once in parallel
* [#1730](https://github.com/icinga/icinga2/issues/1730): Check and retry intervals are incorrect
* [#1729](https://github.com/icinga/icinga2/issues/1729): $TOTALHOSTSERVICESWARNING$ and $TOTALHOSTSERVICESCRITICAL$ aren't getting converted
* [#1728](https://github.com/icinga/icinga2/issues/1728): Service dependencies aren't getting converted properly
* [#1726](https://github.com/icinga/icinga2/issues/1726): group names quoted twice in arrays
* [#1723](https://github.com/icinga/icinga2/issues/1723): add log message for invalid performance data
* [#1753](https://github.com/icinga/icinga2/issues/1753) (Configuration): icinga2-sign-key creates ".crt" and ".key" files when the CA passphrase is invalid
* [#1751](https://github.com/icinga/icinga2/issues/1751) (Configuration): icinga2-build-ca shouldn't prompt for DN
* [#1749](https://github.com/icinga/icinga2/issues/1749): TLS connections are still unstable
* [#1745](https://github.com/icinga/icinga2/issues/1745): Icinga stops updating IDO after a while
* [#1724](https://github.com/icinga/icinga2/issues/1724): Improve systemd service definition
* [#1716](https://github.com/icinga/icinga2/issues/1716) (Cluster): Icinga doesn't send SetLogPosition messages when one of the endpoints fails to connect
* [#1712](https://github.com/icinga/icinga2/issues/1712): parsing of double defined command can generate unexpected errors
* [#1704](https://github.com/icinga/icinga2/issues/1704): Reminder notifications are sent on disabled services
* [#1698](https://github.com/icinga/icinga2/issues/1698): icinga2 cannot be built with both systemd and init.d files
* [#1697](https://github.com/icinga/icinga2/issues/1697) (Livestatus): Thruk Panorama View cannot query Host Status
* [#1695](https://github.com/icinga/icinga2/issues/1695): icinga2.state could not be opened
* [#1764](https://github.com/icinga/icinga2/issues/1764) (Installation): ICINGA2\_SYSCONFIGFILE should use full path using CMAKE\_INSTALL\_FULL\_SYSCONFDIR
* [#1709](https://github.com/icinga/icinga2/issues/1709) (Packages): htpasswd should be installed with icinga2-classicui on Ubuntu
