1# About Icinga 2 <a id="about-icinga2"></a> 2 3## What is Icinga 2? <a id="what-is-icinga2"></a> 4 5[Icinga](https://icinga.com/products/) is a monitoring system which checks 6the availability of your network resources, notifies users of outages, and generates 7performance data for reporting. 8 9Scalable and extensible, Icinga can monitor large, complex environments across 10multiple locations. 11 12Icinga 2 is the monitoring server and requires [Icinga Web 2](https://icinga.com/products/) 13on top in your Icinga Stack. The [configuration](https://icinga.com/products/configuration/) 14can be easily managed with either the [Icinga Director](https://icinga.com/docs/director/latest/), 15config management tools or plain text within the [Icinga DSL](04-configuration.md#configuration). 16 17 18![Icinga 2 Distributed Master and Satellites with Agents](images/distributed-monitoring/icinga2_distributed_monitoring_scenarios_master_satellites_agents.png) 19 20## Start with Icinga <a id="start-icinga"></a> 21 22* [Installation](02-installation.md#installation) 23* [Monitoring Basics](03-monitoring-basics.md#monitoring-basics) 24* [Configuration](04-configuration.md#configuration) 25* [Distributed Monitoring](06-distributed-monitoring.md#distributed-monitoring) 26* [Addons, Integrations and Features](13-addons.md#addons) 27* [Troubleshooting](15-troubleshooting.md#troubleshooting) 28* [Upgrading](16-upgrading-icinga-2.md#upgrading-icinga-2) 29 30Once Icinga Server and Web are running in your distributed environment, 31make sure to check out the many [Icinga modules](https://icinga.com/docs/) 32for even better monitoring. 33 34## What's New <a id="whats-new"></a> 35 36You can follow the development and release milestones on [GitHub](https://github.com/icinga/icinga2/issues). 37Please follow our release announcements on [icinga.com](https://icinga.com/blog/) too. 38 39## Support <a id="support"></a> 40 41Check the project website at [icinga.com](https://icinga.com) for status updates. Join the 42[community channels](https://icinga.com/community/) for questions 43or get in touch for [professional support](https://icinga.com/subscription/). 44 45## Contribute <a id="contribute"></a> 46 47There are many ways to contribute to Icinga -- whether it be sending patches, 48testing, reporting bugs or reviewing and updating the documentation. Every 49contribution is appreciated! 50 51Please continue reading in the [Contributing chapter](https://github.com/Icinga/icinga2/blob/master/CONTRIBUTING.md). 52 53### Security Issues <a id="security"></a> 54 55For reporting security issues please visit [this page](https://icinga.com/contact/security/). 56 57### Icinga 2 Development <a id="development-info"></a> 58 59The Git repository is located on [GitHub](https://github.com/Icinga/icinga2). 60 61Icinga 2 is written in C++ and can be built on Linux/Unix and Windows. 62Read more about development builds in the [development chapter](21-development.md#development). 63 64 65## License <a id="license"></a> 66 67Icinga 2 and the Icinga 2 documentation are licensed under the terms of the GNU 68General Public License Version 2. You will find a copy of this license in the 69LICENSE file included in the source package. 70 71