Fedora bootc (Bootable Containers) example

"From Containerfile to (Virtual) Machine"

Summary

This repository contains the material used for the presentation "From Containerfile to Virtual Machine". It describes the use of bootc (bootable containers), which uses a Containerfile to create a container and converts this to a (virtual) machine.

Presentation

The source of the presentation is available in the presentation directory. The presentation is written in Markdown (revealjs) and uses Obsidian's Extended Slides plugin.

An export is available at https://gbraad-redhat.github.io/fedora-bootc-example/

Containers

The container directory contains the Containerfile, which is build using the workflow scripts in .github/workflows.

Runs of these actions can be found at https://github.com/gbraad-redhat/fedora-bootc-example/actions

Successful builds are available at https://github.com/orgs/gbraad-redhat/packages?repo_name=fedora-bootc-example.

Disk image

The latest disk image is available at https://github.com/gbraad-redhat/fedora-bootc-example/releases/tag/latest, which is purposely a release behind the container builds. Therefore you can use sudo bootc update to update the disk image to the latest version.

This file is named disk.qcow2 and can be run with:

$ sudo virt-install \
    --name fedora-bootc --os-variant fedora-eln \
    --cpu host --vcpus 2 --memory 2048 \
    --import --disk disk.qcow2

After the machine came up, you can log in using:

$ ssh admin@<ip>

Note

The password is password.

Release flow

The bootc-based container images are pushed to a 'public' registry, while the disk image is released as a GitHub release. After an update to the container image, you push to the registry and update the running VM using bootc update.

Authors

@gbraad