Last updated: October 1, 2026 · Reading time: 2–3 minutes
Icinga 2 is the foundation for reliable open-source monitoring. However, what the Icinga 2 installation looks like depends on the operating system and the components you actually need. This overview brings together all the step-by-step guides for Icinga 2, Icinga DB, Icinga DB Web, and Icinga Director for Ubuntu and RHEL in one place.
What is Icinga 2?
Icinga 2 is a monitoring solution that checks whether hosts and services are available and running properly. Hosts can be servers, network devices, databases, and applications. Icinga 2 uses checks, collects the results, and detects status changes that can trigger notifications depending on the status.
Overview of the Individual Components
A complete Icinga 2 setup typically consists of four components that are installed independently but work closely together:
- Icinga 2 performs the actual checks. It stores configuration data and state changes in Redis.
- Icinga DB is a separate Go daemon that reads these events from Redis and writes them to a relational database.
- Icinga DB Web is the web front end. It retrieves data from the IcingaDB database and displays it graphically.
- Icinga Director is used to configure hosts and services. It allows you to manage them in the web interface or via the API. The Director stores configurations in its own database and deploys them via the Icinga2 REST API.
Instructions by Operating System
In the following installation guides, we’ll walk you through the installation step by step, organized by operating system. Click on a tile to go directly to the corresponding instructions.
Ubuntu 24.04 LTS
For Ubuntu 24.04 LTS, you can find the relevant guides for all three components here: Icinga 2 with Icinga DB, Icinga DB Web, and Icinga Director.
Red Hat RHEL 10.1
The same three installation steps are available for Red Hat RHEL 10.1 as well; the main difference here lies in the package management.
Ubuntu 26.04 LTS
For Ubuntu 26.04 LTS, you’ll find the relevant instructions here as soon as the final version is supported.
Would you rather have it installed?
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Whether you’re using Ubuntu or RHEL, with or without Director, the guides in this overview will help you get your Icinga 2 installation up and running in just a few steps.
