# Icinga 2.x CHANGELOG

Please check [doc/1-about.md].

## What's New

### What's New in Version 2.2.4

#### Changes

* Bugfixes

#### Issues

* Bug #6943: Configured recurring downtimes not applied on saturdays
* Bug #7660: livestatus / nsca / etc submits are ignored during reload
* Bug #7685: kUn-Bashify mail-{host,service}-notification.sh
* Bug #8128: Icinga 2.2.2 build fails on SLES11SP3 because of changed boost dependency
* Bug #8131: vfork() hangs on OS X
* Bug #8162: Satellite doesn't use manually supplied 'local zone name'
* Bug #8192: Feature statusdata shows wrong host notification options
* Bug #8201: Update Icinga Web 2 uri to /icingaweb2
* Bug #8214: Fix YAJL detection on Debian squeeze
* Bug #8222: inconsistent URL http(s)://www.icinga.org
* Bug #8223: Typos in readme file for windows plugins
* Bug #8245: check_ssmtp command does NOT support mail_from
* Bug #8256: Restart fails after deleting a Host
* Bug #8288: Crash in DbConnection::ProgramStatusHandler
* Bug #8295: Restart of Icinga hangs
* Bug #8299: Scheduling downtime for host and all services only schedules services
* Bug #8311: Segfault in Checkable::AddNotification
* Bug #8321: enable_event_handlers attribute is missing in status.dat
* Bug #8368: Output in "node wizard" is confusing

### What's New in Version 2.2.3

#### Changes

* Bugfixes

#### Issues

* Bug #8063: Volatile checks trigger invalid notifications on OK->OK state changes
* Bug #8125: Incorrect ticket shouldn't cause "node wizard" to terminate
* Bug #8126: Icinga 2.2.2 doesn't build on i586 SUSE distributions
* Bug #8143: Windows plugin check_service.exe can't find service NTDS
* Bug #8144: Arguments without values are not used on plugin exec
* Bug #8147: check_interval must be greater than 0 error on update-config
* Bug #8152: DB IDO query queue limit reached on reload
* Bug #8171: Typo in example of StatusDataWriter
* Bug #8178: Icinga 2.2.2 segfaults on FreeBSD
* Bug #8181: icinga2 node update config shows hex instead of human readable names
* Bug #8182: Segfault on update-config old empty config

### What's New in Version 2.2.2

#### Changes

* Bugfixes

#### Issues

* Bug #7045: icinga2 init-script doesn't validate configuration on reload action
* Bug #7064: Missing host downtimes/comments in Livestatus
* Bug #7301: Docs: Better explaination of dependency state filters
* Bug #7314: double macros in command arguments seems to lead to exception
* Bug #7511: Feature `compatlog' should flush output buffer on every new line
* Bug #7518: update-config fails to create hosts
* Bug #7591: CPU usage at 100% when check_interval = 0 in host object definition
* Bug #7618: Repository does not support services which have a slash in their name
* Bug #7683: If a parent host goes down, the child host isn't marked as unrechable in the db ido
* Bug #7707: "node wizard" shouldn't crash when SaveCert fails
* Bug #7745: Cluster heartbeats need to be more aggressive
* Bug #7769: The unit tests still crash sometimes
* Bug #7863: execute checks locally if command_endpoint == local endpoint
* Bug #7878: Segfault on issuing node update-config
* Bug #7882: Improve error reporting when libmysqlclient or libpq are missing
* Bug #7891: CLI `icinga2 node update-config` doesn't sync configs from remote clients as expected
* Bug #7913: /usr/lib/icinga2 is not owned by a package
* Bug #7914: SUSE packages %set_permissions post statement wasn't moved to common
* Bug #7917: update_config not updating configuration
* Bug #7920: Test Classic UI config file with Apache 2.4
* Bug #7929: Apache 2.2 fails with new apache conf
* Bug #8002: typeof() seems to return null for arrays and dictionaries
* Bug #8003: SIGABRT while evaluating apply rules
* Bug #8028: typeof does not work for numbers
* Bug #8039: Livestatus: Replace unixcat with nc -U
* Bug #8048: Wrong command in documentation for installing Icinga 2 pretty printers.
* Bug #8050: exception during config check
* Bug #8051: Update host examples in Dependencies for Network Reachability documentation
* Bug #8058: DB IDO: Missing last_hard_state column update in {host,service}status tables
* Bug #8059: Unit tests fail on FreeBSD
* Bug #8066: Setting a dictionary key to null does not cause the key/value to be removed
* Bug #8070: Documentation: Add note on default notification interval in getting started notifications.conf
* Bug #8075: No option to specify timeout to check_snmp and snmp manubulon commands
* Bug #8105: StatusDataWriter: Wrong export of event_handler_enabled

### What's New in Version 2.2.1

#### Changes

* Support arrays in [command argument macros](#command-passing-parameters) #6709
    * Allows to define multiple parameters for [nrpe -a](#plugin-check-command-nrpe), [nscp -l](#plugin-check-command-nscp), [disk -p](#plugin-check-command-disk), [dns -a](#plugin-check-command-dns).
* Bugfixes

#### Issues

* Feature #6709: Support for arrays in macros
* Feature #7463: Update spec file to use yajl-devel
* Feature #7739: The classicui Apache conf doesn't support Apache 2.4
* Feature #7747: Increase default timeout for NRPE checks
* Feature #7867: Document how arrays in macros work

* Bug #7173: service icinga2 status gives wrong information when run as unprivileged user
* Bug #7602: livestatus large amount of submitting unix socket command results in broken pipes
* Bug #7613: icinga2 checkconfig should fail if group given for command files does not exist
* Bug #7671: object and template with the same name generate duplicate object error
* Bug #7708: Built-in commands shouldn't be run on the master instance in remote command execution mode
* Bug #7725: Windows wizard uses incorrect CLI command
* Bug #7726: Windows wizard is missing --zone argument
* Bug #7730: Restart Icinga - Error Restoring program state from file '/var/lib/icinga2/icinga2.state'
* Bug #7735: 2.2.0 has out-of-date icinga2 man page
* Bug #7738: Systemd rpm scripts are run in wrong package
* Bug #7740: /usr/sbin/icinga-prepare-dirs conflicts in the bin and common package
* Bug #7741: Icinga 2.2 misses the build requirement libyajl-devel for SUSE distributions
* Bug #7743: Icinga2 node add failed with unhandled exception
* Bug #7754: Incorrect error message for localhost
* Bug #7770: Objects created with node update-config can't be seen in Classic UI
* Bug #7786: Move the icinga2-prepare-dirs script elsewhere
* Bug #7806: !in operator returns incorrect result
* Bug #7828: Verify if master radio box is disabled in the Windows wizard
* Bug #7847: Wrong information in section "Linux Client Setup Wizard for Remote Monitoring"
* Bug #7862: Segfault in CA handling
* Bug #7868: Documentation: Explain how unresolved macros are handled
* Bug #7890: Wrong permission in run directory after restart
* Bug #7896: Fix Apache config in the Debian package

### What's New in Version 2.2.0

#### Changes

* DB IDO schema update to version `1.12.0`
    * schema files in `lib/db_ido_{mysql,pgsql}/schema` (source)
    * Table `programstatus`: New column `program_version`
    * Table `customvariables` and `customvariablestatus`: New column `is_json` (required for custom attribute array/dictionary support)
* New features
    * [GelfWriter](#gelfwriter): Logging check results, state changes, notifications to GELF (graylog2, logstash) #7619
    * Agent/Client/Node framework #7249
    * Windows plugins for the client/agent parts #7242 #7243
* New CLI commands #7245
    * `icinga2 feature {enable,disable}` replaces `icinga2-{enable,disable}-feature` script  #7250
    * `icinga2 object list` replaces `icinga2-list-objects` script  #7251
    * `icinga2 pki` replaces` icinga2-build-{ca,key}` scripts  #7247
    * `icinga2 repository` manages `/etc/icinga2/repository.d` which must be included in `icinga2.conf` #7255
    * `icinga2 node` cli command provides node (master, satellite, agent) setup (wizard) and management functionality #7248
    * `icinga2 daemon` for existing daemon arguments (`-c`, `-C`). Removed `-u` and `-g` parameters in favor of [init.conf](#init-conf).
    * bash auto-completion & terminal colors #7396
* Configuration
    * Former `localhost` example host is now defined in [hosts.conf](#hosts-conf) #7594
    * All example services moved into advanced apply rules in [services.conf](#services-conf)
    * Updated downtimes configuration example in [downtimes.conf](#downtimes-conf) #7472
    * Updated notification apply example in [notifications.conf](#notifications-conf) #7594
    * Support for object attribute 'zone' #7400
    * Support setting [object variables in apply rules](#dependencies-apply-custom-attributes) #7479
    * Support arrays and dictionaries in [custom attributes](#custom-attributes-apply) #6544 #7560
    * Add [apply for rules](#using-apply-for) for advanced dynamic object generation #7561
    * New attribute `accept_commands` for [ApiListener](#objecttype-apilistener) #7559
    * New [init.conf](#init-conf) file included first containing new constants `RunAsUser` and `RunAsGroup`.
* Cluster
    * Add [CSR Auto-Signing support](#csr-autosigning-requirements) using generated ticket #7244
    * Allow to [execute remote commands](#icinga2-remote-monitoring-client-command-execution) on endpoint clients #7559
* Perfdata
    * [PerfdataWriter](#writing-performance-data-files): Don't change perfdata, pass through from plugins #7268
    * [GraphiteWriter](#graphite-carbon-cache-writer): Add warn/crit/min/max perfdata and downtime_depth stats values #7366 #6946
* Packages
    * `python-icinga2` package dropped in favor of integrated cli commands #7245
    * Windows Installer for the agent parts #7243

> **Note**
>
>  Please remove `conf.d/hosts/localhost*` after verifying your updated configuration!

#### Issues

* Feature #6544: Support for array in custom variable.
* Feature #6946: Add downtime depth as statistic metric for GraphiteWriter
* Feature #7187: Document how to use multiple assign/ignore statements with logical "and" & "or"
* Feature #7199: Cli commands: add filter capability to 'object list'
* Feature #7241: Windows Wizard
* Feature #7242: Windows plugins
* Feature #7243: Windows installer
* Feature #7244: CSR auto-signing
* Feature #7245: Cli commands
* Feature #7246: Cli command framework
* Feature #7247: Cli command: pki
* Feature #7248: Cli command: Node
* Feature #7249: Node Repository
* Feature #7250: Cli command: Feature
* Feature #7251: Cli command: Object
* Feature #7252: Cli command: SCM
* Feature #7253: Cli Commands: Node Repository Blacklist & Whitelist
* Feature #7254: Documentation: Agent/Satellite Setup
* Feature #7255: Cli command: Repository
* Feature #7262: macro processor needs an array printer
* Feature #7319: Documentation: Add support for locally-scoped variables for host/service in applied Dependency
* Feature #7334: GraphiteWriter: Add support for customized metric prefix names
* Feature #7356: Documentation: Cli Commands
* Feature #7366: GraphiteWriter: Add warn/crit/min/max perfdata values if existing
* Feature #7370: CLI command: variable
* Feature #7391: Add program_version column to programstatus table
* Feature #7396: Implement generic color support for terminals
* Feature #7400: Remove zone keyword and allow to use object attribute 'zone'
* Feature #7415: CLI: List disabled features in feature list too
* Feature #7421: Add -h next to --help
* Feature #7423: Cli command: Node Setup
* Feature #7452: Replace cJSON with a better JSON parser
* Feature #7465: Cli command: Node Setup Wizard (for Satellites and Agents)
* Feature #7467: Remove virtual agent name feature for localhost
* Feature #7472: Update downtimes.conf example config
* Feature #7478: Documentation: Mention 'icinga2 object list' in config validation
* Feature #7479: Set host/service variable in apply rules
* Feature #7480: Documentation: Add host/services variables in apply rules
* Feature #7504: Documentation: Revamp getting started with 1 host and multiple (service) applies
* Feature #7514: Documentation: Move troubleshooting after the getting started chapter
* Feature #7524: Documentation: Explain how to manage agent config in central repository
* Feature #7543: Documentation for arrays & dictionaries in custom attributes and their usage in apply rules for
* Feature #7559: Execute remote commands on the agent w/o local objects by passing custom attributes
* Feature #7560: Support dictionaries in custom attributes
* Feature #7561: Generate objects using apply with foreach in arrays or dictionaries (key => value)
* Feature #7566: Implement support for arbitrarily complex indexers
* Feature #7594: Revamp sample configuration: add NodeName host, move services into apply rules schema
* Feature #7596: Plugin Check Commands: disk is missing '-p', 'x' parameter
* Feature #7619: Add GelfWriter for writing log events to graylog2/logstash
* Feature #7620: Documentation: Update Icinga Web 2 installation
* Feature #7622: Icinga 2 should use less RAM
* Feature #7680: Conditionally enable MySQL and PostgresSQL, add support for FreeBSD and DragonFlyBSD

* Bug #6547: delaying notifications with times.begin should postpone first notification into that window
* Bug #7257: default value for "disable_notifications" in service dependencies is set to "false"
* Bug #7268: Icinga2 changes perfdata order and removes maximum
* Bug #7272: icinga2 returns exponential perfdata format with check_nt
* Bug #7275: snmp-load checkcommand has wrong threshold syntax
* Bug #7276: SLES (Suse Linux Enterprise Server) 11 SP3 package dependency failure
* Bug #7302: ITL: check_procs and check_http are missing arguments
* Bug #7324: config parser crashes on unknown attribute in assign
* Bug #7327: Icinga2 docs: link supported operators from sections about apply rules
* Bug #7331: Error messages for invalid imports missing
* Bug #7338: Docs: Default command timeout is 60s not 5m
* Bug #7339: Importing a CheckCommand in a NotificationCommand results in an exception without stacktrace.
* Bug #7349: Documentation: Wrong check command for snmp-int(erface)
* Bug #7351: snmp-load checkcommand has a wrong "-T" param value
* Bug #7359: Setting snmp_v2 can cause snmp-manubulon-command derived checks to fail
* Bug #7365: Typo for "HTTP Checks" match in groups.conf
* Bug #7369: Fix reading perfdata in compat/checkresultreader
* Bug #7372: custom attribute name 'type' causes empty vars dictionary
* Bug #7373: Wrong usermod command for external command pipe setup
* Bug #7378: Commands are auto-completed when they shouldn't be
* Bug #7379: failed en/disable feature should return error
* Bug #7380: Debian package root permissions interfere with icinga2 cli commands as icinga user
* Bug #7392: Schema upgrade files are missing in /usr/share/icinga2-ido-{mysql,pgsql}
* Bug #7417: CMake warnings on OS X
* Bug #7428: Documentation: 1-about contribute links to non-existing report a bug howto
* Bug #7433: Unity build fails on RHEL 5
* Bug #7446: When replaying logs the secobj attribute is ignored
* Bug #7473: Performance data via API is broken
* Bug #7475: can't assign Service to Host in nested HostGroup
* Bug #7477: Fix typos and other small corrections in documentation
* Bug #7482: OnStateLoaded isn't called for objects which don't have any state
* Bug #7483: Hosts/services should not have themselves as parents
* Bug #7495: Utility::GetFQDN doesn't work on OS X
* Bug #7503: Icinga2 fails to start due to configuration errors
* Bug #7520: Use ScriptVariable::Get for RunAsUser/RunAsGroup
* Bug #7536: Object list dump erraneously evaluates template definitions
* Bug #7537: Nesting an object in a template causes the template to become non-abstract
* Bug #7538: There is no __name available to nested objects
* Bug #7573: link missing in documentation about livestatus
* Bug #7577: Invalid checkresult object causes Icinga 2 to crash
* Bug #7579: only notify users on recovery which have been notified before (not-ok state)
* Bug #7585: Nested templates do not work (anymore)
* Bug #7586: Exception when executing check
* Bug #7597: Compilation Error with boost 1.56 under Windows
* Bug #7599: Plugin execution on Windows does not work
* Bug #7617: mkclass crashes when called without arguments
* Bug #7623: Missing state filter 'OK' must not prevent recovery notifications being sent
* Bug #7624: Installation on Windows fails
* Bug #7625: IDO module crashes on Windows
* Bug #7646: Get rid of static boost::mutex variables
* Bug #7648: Unit tests fail to run
* Bug #7650: Wrong set of dependency state when a host depends on a service
* Bug #7681: CreateProcess fails on Windows 7
* Bug #7688: DebugInfo is missing for nested dictionaries


### What's New in Version 2.1.1

#### Issues

* Bug #6147: Link libcJSON against libm
* Bug #6696: make test fails on openbsd
* Bug #6841: Too many queued messages
* Bug #6862: SSL_read errors during restart
* Bug #6981: SSL errors with interleaved SSL_read/write
* Bug #7029: icinga2.spec: files-attr-not-set for python-icinga2 package
* Bug #7032: "Error parsing performance data" in spite of "enable_perfdata = false"
* Bug #7036: Remove validator for the Script type
* Bug #7037: icinga2-list-objects doesn't work with Python 3
* Bug #7038: Fix rpmlint errors
* Bug #7042: icinga2-list-objects complains about Umlauts and stops output
* Bug #7044: icinga2 init-script terminates with exit code 0 if $DAEMON is not in place or not executable
* Bug #7047: service icinga2 status - prints cat error if the service is stopped
* Bug #7058: Exit code is not initialized for some failed checks
* Bug #7065: pipe2 returns ENOSYS on GNU Hurd and Debian kfreebsd
* Bug #7072: GraphiteWriter should ignore empty perfdata value
* Bug #7080: Missing differentiation between service and systemctl
* Bug #7096: new SSL Errors with too many queued messages
* Bug #7115: Build fails on Haiku
* Bug #7123: Manubulon-Plugin conf Filename wrong
* Bug #7139: GNUInstallDirs.cmake outdated
* Bug #7167: Segfault using cluster in TlsStream::IsEof
* Bug #7168: fping4 doesn't work correctly with the shipped command-plugins.conf
* Bug #7186: Livestatus hangs from time to time
* Bug #7195: fix memory leak ido_pgsql
* Bug #7210: clarify on db ido upgrades
* Feature #6719: Change log message for checking/sending notifications
* Feature #7028: Document how to use @ to escape keywords
* Feature #7033: Add include guards for mkclass files
* Feature #7034: Ensure that namespaces for INITIALIZE_ONCE and REGISTER_TYPE are truly unique
* Feature #7035: Implement support for unity builds
* Feature #7039: Figure out a better way to set the version for snapshot builds
* Feature #7040: Unity builds: Detect whether __COUNTER__ is available
* Feature #7041: Enable unity build for RPM/Debian packages
* Feature #7070: Explain event commands and their integration by a real life example (httpd restart via ssh)
* Feature #7158: Extend documentation for icinga-web on Debian systems

### What's New in Version 2.1.0

#### Changes

* DB IDO schema upgrade ([MySQL](#upgrading-mysql-db),[PostgreSQL](#upgrading-postgresql-db) required!
    * new schema version: **1.11.7**
    * RPMs install the schema files into `/usr/share/icinga2-ido*` instead of `/usr/share/doc/icinga2-ido*` #6881
* [Information for config objects](#list-configuration-objects) using `icinga2-list-objects` script #6702
* Add Python 2.4 as requirement #6702
* Add search path: If `-c /etc/icinga2/icinga2.conf` is omitted, use `SysconfDir + "/icinga2/icinga2.conf"` #6874
* Change log level for failed commands #6751
* Notifications are load-balanced in a [High Availability cluster setup](#high-availability-notifications) #6203
    * New config attribute: `enable_ha`
* DB IDO "run once" or "run everywhere" mode in a [High Availability cluster setup](#high-availability-db-ido) #6203 #6827
    * New config attributes: `enable_ha` and `failover_timeout`
* RPMs use the `icingacmd` group for /var/{cache,log,run}/icinga2 #6948

#### Issues

* Bug #6881: make install does not install the db-schema
* Bug #6915: use _rundir macro for configuring the run directory
* Bug #6916: External command pipe: Too many open files
* Bug #6917: enforce /usr/lib as base for the cgi path on SUSE distributions
* Bug #6942: ExternalCommandListener fails open pipe: Too many open files
* Bug #6948: check file permissions in /var/cache/icinga2
* Bug #6962: Commands are processed multiple times
* Bug #6964: Host and service checks stuck in "pending" when hostname = localhost a parent/satellite setup
* Bug #7001: Build fails with Boost 1.56
* Bug #7016: 64-bit RPMs are not installable
* Feature #5219: Cluster support for modified attributes
* Feature #6066: Better log messages for cluster changes
* Feature #6203: Better cluster support for notifications / IDO
* Feature #6205: Log replay sends messages to instances which shouldn't get those messages
* Feature #6702: Information for config objects
* Feature #6704: Release 2.1
* Feature #6751: Change log level for failed commands
* Feature #6874: add search path for icinga2.conf
* Feature #6898: Enhance logging for perfdata/graphitewriter
* Feature #6919: Clean up spec file
* Feature #6920: Recommend related packages on SUSE distributions
* API - Bug #6998: ApiListener ignores bind_host attribute
* DB IDO - Feature #6827: delay ido connect in ha cluster
* Documentation - Bug #6870: Wrong object attribute 'enable_flap_detection'
* Documentation - Bug #6878: Wrong parent in Load Distribution
* Documentation - Bug #6909: clarify on which config tools are available
* Documentation - Bug #6968: Update command arguments 'set_if' and beautify error message
* Documentation - Bug #6995: Keyword "required" used inconsistently for host and service "icon_image*" attributes
* Documentation - Feature #6651: Migration: note on check command timeouts
* Documentation - Feature #6703: Documentation for zones and cluster permissions
* Documentation - Feature #6743: Better explanation for HA config cluster
* Documentation - Feature #6839: Explain how the order attribute works in commands
* Documentation - Feature #6864: Add section for reserved keywords
* Documentation - Feature #6867: add section about disabling re-notifications
* Documentation - Feature #6869: Add systemd options: enable, journal
* Documentation - Feature #6922: Enhance Graphite Writer description
* Documentation - Feature #6949: Add documentation for icinga2-list-objects
* Documentation - Feature #6997: how to add a new cluster node
* Documentation - Feature #7018: add example selinux policy for external command pipe
* Plugins - Feature #6650: Plugin Check Commands: add manubulon snmp plugins


### What's New in Version 2.0.2

* Bug #6450: ipmi-sensors segfault due to stack size
* Bug #6479: Notifications not always triggered
* Bug #6501: Classic UI Debian/Ubuntu: apache 2.4 requires 'a2enmod cgi' & apacheutils installed
* Bug #6548: Add cmake constant for PluginDir
* Bug #6549: GraphiteWriter regularly sends empty lines
* Bug #6550: add log message for invalid performance data
* Bug #6589: Command pipe blocks when trying to open it more than once in parallel
* Bug #6621: Infinite loop in TlsStream::Close
* Bug #6627: Location of the run directory is hard coded and bound to "local_state_dir"
* Bug #6659: RPMLint security warning - missing-call-to-setgroups-before-setuid /usr/sbin/icinga2
* Bug #6682: Missing detailed error messages on ApiListener SSL Errors
* Bug #6686: Event Commands are triggered in OK HARD state everytime
* Bug #6687: Remove superfluous quotes and commas in dictionaries
* Bug #6713: sample config: add check commands location hint (itl/plugin check commands)
* Bug #6718: "order" attribute doesn't seem to work as expected
* Bug #6724: TLS Connections still unstable in 2.0.1
* Bug #6756: GraphiteWriter: Malformatted integer values
* Bug #6765: Config validation without filename argument fails with unhandled exception
* Bug #6768: Repo Error on RHEL 6.5
* Bug #6773: Order doesn't work in check ssh command
* Bug #6782: The "ssl" check command always sets -D
* Bug #6790: Service icinga2 reload command does not cause effect
* Bug #6809: additional group rights missing when Icinga started with -u and -g
* Bug #6810: High Availablity does not synchronise the data like expected
* Bug #6820: Icinga 2 crashes during startup
* Bug #6821: [Patch] Fix build issue and crash found on Solaris, potentially other Unix OSes
* Bug #6825: incorrect sysconfig path on sles11
* Bug #6832: Remove if(NOT DEFINED ICINGA2_SYSCONFIGFILE) in etc/initsystem/CMakeLists.txt
* Bug #6840: Missing space in error message
* Bug #6849: Error handler for getaddrinfo must use gai_strerror
* Bug #6852: Startup logfile is not flushed to disk
* Bug #6856: event command execution does not call finish handler
* Bug #6861: write startup error messages to error.log
* Feature #5818: SUSE packages
* Feature #6655: Build packages for el7
* Feature #6688: Rename README to README.md
* Feature #6698: Require command to be an array when the arguments attribute is used
* Feature #6700: Release 2.0.2
* Feature #6783: Print application paths for --version
* DB IDO - Bug #6414: objects and their ids are inserted twice
* DB IDO - Bug #6608: Two Custom Variables with same name, but Upper/Lowercase creating IDO duplicate entry
* DB IDO - Bug #6646: NULL vs empty string
* DB IDO - Bug #6850: exit application if ido schema version does not match
* Documentation - Bug #6652: clarify on which features are required for classic ui/web/web2
* Documentation - Bug #6708: update installation with systemd usage
* Documentation - Bug #6711: icinga Web: wrong path to command pipe
* Documentation - Bug #6725: Missing documentation about implicit dependency
* Documentation - Bug #6728: wrong path for the file 'localhost.conf'
* Migration - Bug #6558: group names quoted twice in arrays
* Migration - Bug #6560: Service dependencies aren't getting converted properly
* Migration - Bug #6561: $TOTALHOSTSERVICESWARNING$ and $TOTALHOSTSERVICESCRITICAL$ aren't getting converted
* Migration - Bug #6563: Check and retry intervals are incorrect
* Migration - Bug #6786: Fix notification definition if no host_name / service_description given
* Plugins - Feature #6695: Plugin Check Commands: Add expect option to check_http
* Plugins - Feature #6791: Plugin Check Commands: Add timeout option to check_ssh

#### Changes

* DB IDO schema upgrade required (new schema version: 1.11.6)

### What's New in Version 2.0.1

* Bug #6316: application fails to start on wrong log file permissions but does not tell about it
* Bug #6368: Deadlock in ApiListener::RelayMessage
* Bug #6373: base64 on CentOS 5 fails to read certificate bundles
* Bug #6388: Debian package icinga2-classicui needs versioned dependency of icinga-cgi*
* Bug #6488: build warnings
* Bug #6492: icinga2.state could not be opened
* Bug #6493: Copyright problems
* Bug #6498: icinga2 cannot be built with both systemd and init.d files
* Bug #6510: Reminder notifications are sent on disabled services
* Bug #6526: htpasswd should be installed with icinga2-classicui on Ubuntu
* Bug #6529: parsing of double defined command can generate unexpected errors
* Bug #6537: Icinga doesn't send SetLogPosition messages when one of the endpoints fails to connect
* Bug #6551: Improve systemd service definition
* Bug #6565: Dependencies should cache their parent and child object
* Bug #6574: Check command result doesn't match
* Bug #6576: Remove line number information from stack traces
* Bug #6588: Notifications causing segfault from exim
* Bug #6605: Please add --sni option to http check command
* Bug #6612: Icinga stops updating IDO after a while
* Bug #6617: TLS connections are still unstable
* Bug #6620: icinga2-build-ca shouldn't prompt for DN
* Bug #6622: icinga2-sign-key creates ".crt" and ".key" files when the CA passphrase is invalid
* Bug #6657: ICINGA2_SYSCONFIGFILE should use full path using CMAKE_INSTALL_FULL_SYSCONFDIR
* Bug #6662: Increase icinga.cmd Limit
* Bug #6665: Build fails when MySQL is not installed
* Bug #6671: enabled_notification doesn't work as expected
* Bug #6672: Icinga crashes after "Too many queued messages"
* Bug #6673: enable_notifications = false for users has no effect
* Feature #6531: Add port option to check imap/pop/smtp and a new dig
* Feature #6581: Add more options to snmp check
* DB IDO - Bug #5577: PostgreSQL string escaping
* DB IDO - Bug #6577: icinga2-ido-pgsql snapshot package missing dependecy dbconfig-common
* Documentation - Bug #6506: Array section confusing
* Documentation - Bug #6592: Documentation for || and && is missing
* Documentation - Feature #6658: change docs.icinga.org/icinga2/latest to git master
* Livestatus - Bug #6494: Thruk Panorama View cannot query Host Status
* Livestatus - Feature #5312: OutputFormat python
* Migration - Bug #6559: $SERVICEDESC$ isn't getting converted correctly

#### Changes

### Archive
