icinga2/doc/1-about.md

About Icinga 2

What is Icinga 2?

Icinga 2 is an open source monitoring system which keeps watch over network resources, notifies users of outages and recoveries and generates performance data for reporting. Scalable and extensible, Icinga 2 can monitor complex, large environments across multiple locations.

Licensing

Icinga 2 and the Icinga 2 documentation are licensed under the terms of the GNU General Public License Version 2, you will find a copy of this license in the LICENSE file included in the package.

Support

Support for Icinga 2 is available in a number of ways. Please have a look at the support overview page at [https://support.icinga.org].

Contribute

There are many possiblities to contribute to Icinga - be it sending patches, testing and reporting bugs, reviewing and updating the documentation, ... every contribution is appreciated! :-)

Please get in touch with the Icinga team at [https://www.icinga.org/ecosystem/]

What's new

What's New in Version 0.0.8

• Add Dependency object for advanced host/service dependency definition
• Add optional IcingaNodeName for cluster feature
• Populate check_source attribute with the checker's node name
• Cluster supports recursive config includes
• Add Cluster health check
• Add more performance data to the Icinga health check
• Add IcingaStatusWriter feature writing a status json file
• Smoother pending service checking during startup
• Reduce virtual memory usage
• Stack traces include file names and line numbers
• Treat script variables as constants preventing override
• Fix pending services are being checked with the retry interval
• DB IDO: Fix deleted objects are not marked as is_active=0
• DB IDO: additional fields for cluster/checker nodes

Changes

• {host,service}_dependencies attributes have been changed to Dependency objects supporting new attributes: disable_checks, disable_notifications, state_filter, period. For better readability, there is parent_service and child_service for example.

Note

Update your existing configuration!

• DB IDO: Schema updates for 0.0.8: MySQL PostgreSQL

What's New in Version 0.0.7

• DB IDO performance improvements on startup
• Fix notification_id handling in DB IDO
• More automated tests (based on the Vagrant VM)
• New documentation chapters

What's New in Version 0.0.6

• Scheduled Downtimes as configuration object (also known as "Recurring Downtimes").
• Log command arguments
• Performance improvements for the config compiler
• Config validation provides stats at the end
• icinga2-enable-feature lists already enabled features
• Add support for latency statistics to IcingaCheckTask
• Implement support for using custom attributes as macros
• StatusDataWriter update interval as config attribute
• Improve performance with fetching data for status.dat/objects.cache, DB IDO and Livestatus
• Livestatus History Table performance improvements

Changes

• Generated object names (host with services array) use an exclamation mark instead of a colon as separator. State file objects with downtimes, comments, etc are invalid (unknown) for that reason.
• Script variables are set using 'var' and 'const' instead of the previous 'set' identifier
• ITL constants are now embedded in libicinga
• Removed the ConsoleLogger object and keep the default console log enabled until we daemonize

What's New in Version 0.0.5

• Cluster: Implement support for CRLs
• Implement modified attributes
• Log messages providing more context
• Default log is a file (rather than syslog)
• Improve latency after start-up
• NSCA-ng support for the Vagrant demo VM
• Configuration: Recursively include configuration files matching a certain pattern
• IDO: Improve performance
• Migration: Add fallback for objects.cache instead of cfg_{dir,file}
• Lots of bugfixes and performance improvements
• Package fixes (Note: GPG key of packages.icinga.org has been updated)

What's New in Version 0.0.4

• IDO: PostgreSQL support
• IDO: implemented options to filter which kind of events are written to the database
• Livestatus: implemented support for the log and statehist tables
• Livestatus: implemented regex filters (~ and ~~)
• Replaced autotools-based build system with cmake
• Lots of bug fixes and performance improvements

What's New in Version 0.0.3

• StatusDataWriter and ExternalCommandListener (former Compat) and CompatLogger (former CompatLog) for status.dat/objects.cache/icinga2.cmd/icinga.log for Icinga 1.x Classic UI support
• IdoMysqlConnection and ExternalCommandListener for Icinga 1.x Web
• IdoMysqlConnection for Icinga 1.x Reporting, NagVis
• LivestatusListener for addons using the livestatus interface (history tables tbd)
• PerfDataWriter for graphing addons such as PNP/inGraph/graphite (can be loaded multiple times!)
• GraphiteWriter for sending metrics directly to graphite carbon sockets
• CheckResultReader to collect Icinga 1.x slave checkresults (migrate your distributed setup step-by-step)
• ClusterListener for real distributed architecture including config and runtime data (checks, comments, downtimes) sync and replay
• SyslogLogger, FileLogger and ConsoleLogger for different types of logging
• Domain support for distributed cluster environments
• Config migration script supporting easier migration from Icinga 1.x configuration
• Reviewed configuration options, additional attributes added
• Enhanced ITL, added sample configuration
• Enable/Disable Icinga 2 features on CLI
• Documentation using Markdown (Getting Started, Monitoring Basics, Object Types, Icinga Template Library, Advanced Topics, Migration from Icinga 1.x, Differences between Icinga 1.x and 2, Vagrant Demo VM)
• Vagrant Demo VM supported by Puppet modules installing RPM snapshots for Icinga 2, Icinga 1.x Classic UI and Web
• Package snapshots available on [packages.icinga.org]