This is a cheat sheet created during the last upgrade of a CentOS-based Kubernetes cluster serving Developer's Cloud Desktops to our customers. TLDR; style. The commands are tested on CentOS 7. For Ubuntu, replace sudo yum install -y kubeadm-1.25.4-00 --disableexcludes=kubernetes…
Migrate Kubernetes Runtime from Docker to containerd
Migration of the kubeadm-based Kubernetes from Docker to containerd should be easy. In my case, it wasn't. Wrong information found on the Internet combined with the incompatibility of the used Kubernetes and containerd versions has caused major problems. Fortunately, I…
