Building a Buildah Container Image for Kubernetes
Dan Walsh (@rhatdan) asked me to look into building a working Buildah container image. This was not just a cool experiment. It has a real purpose. As many readers know, Dan is not a fan of
big fat daemons. This has become less of an issue when running containers in Kubernetes as there is an alternative with CRI-O. CRI-O provides kubernetes a standard interface to OCI compliant runtimes. runC is the reference implementation of the OCI runtime specification. Kubernetes calls the runtC runtime through CRI-O and runC then talks to the Linux kernel to run a container. This bypasses the need for the Docker daemon, and containerd. With CRI-O, there is no requirement for the Docker daemon for a kubernetes cluster to run containers.