After my first adventure with Kubernetes, getting started with k3s on my small 3 node ARM cluster that boots via PXE / NFS, I noticed that there is only one k3s node that has the control-plane,master role. If that node fails you can no longer manager the cluster. Other nodes can fail and then the workloads (pods) will be restarted eventually after 5 minutes, but this node is special. Time to change that and make it a high available cluster.
