Error1: (k8s-Cluster_Manual)
kubeadm init ... [preflight] Running pre-flight checks error execution phase preflight: [preflight] Some fatal errors occurred: [ERROR CRI]: container runtime is not running: output: time="2020-09-24T11:49:16Z" level=fatal msg="getting status of runtime failed: rpc error: code = Unimplemented desc = unknown service runtime.v1alpha2.RuntimeService" , error: exit status 1
Solution:
$ rm /etc/containerd/config.toml $ systemctl restart containerd $ kubeadm init