Overview
Image Builder is available in various distributions:
You can see an overview of which version is released where here.
osbuild-composer is a service for building customized operating system images (currently only Fedora and RHEL). These images can be used with various virtualization software such as QEMU, VirtualBox, VMWare and also with cloud computing providers like AWS, Azure or GCP.
There are two interfaces that you can use to communicate with osbuild-composer:
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Cockpit Composer: The web-based management console Cockpit comes bundled with a UI extension to build operating system artifacts. See the documentation of Cockpit Composer for information, or consult the Cockpit Guide for help on general Cockpit questions.
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Command-line Interface: With composer-cli there exists a linux command-line interface (CLI) to some of the functionality provided by OSBuild. The CLI is part of the Weldr project, a precursor of OSBuild.
New image-builder CLI
This guide contains instructions on installing osbuild-composer service and its basic usage. This guide also contains instructions for using the new image-builder CLI.
The image-builder CLI moves away from the legacy service-based model in favor of a stateless, tool-based architecture. This removes the need for background daemons or database management: the tool runs client-side and blueprints are passed directly as local .toml files rather than uploaded. For more information about the image-builder CLI, see the osbuild/image-builder repo on GitHub.
Contribute
If you want to fix a typo, or even contribute new content, the sources for this webpage are hosted in osbuild/osbuild.github.io GitHub repository.
For Red Hatters, the internal guides can be found here.