Welcome to the examples repository for RHEL bootc!
The registry.redhat.io/rhel9/rhel-bootc:9.4 container image
represents a new mechanism to configure Red Hat Enterprise Linux.
You can define your systems via a container build, generate
disk images from the containers or deploy them directly via
Anaconda or bootc install.
Thereafter, the systems can be upgraded in-place with transactional updates/rollbacks and maintained in a git-ops fashion, or with live changes applied out of band.
This git repository contains just a few representative examples of configuring a Linux system via containers.
A very significant percentage of Linux system configuration
boils down to writing configuration files. For example,
kernel parameters can be changed by writing to /usr/lib/sysctl.d.
In general, configuration like this will Just Work when done in a container build.
As a result, this example repository focuses on two things:
- Additional software patterns (especially for public clouds)
- Subtle and less obvious cases, such as SSH key management
- insights - Configure the booted container to register to Insights
- container-auth - Currently, authentication file locations
for
bootcandpodmandifferent, and there are some subtleties in thepodmanlocation; this writes a pull secret to a central location embedded in the container (underneath/usras part of the immutable state).
- aws, kubevirt, openstack - these all simply add cloud-init, which many use cases (but not all) will want.
- vmware - Usage of this agent is often required.
There are more community-contributed examples available in the upstream Fedora-bootc project.