清除安装的Rancher、K8s

#清除主机的所有容器、挂载、镜像（慎用）

docker stop $(docker ps -aq)
docker system prune -f
docker volume rm $(docker volume ls -q)
docker image rm $(docker image ls -q)
sudo rm -rf /etc/ceph \
       /etc/cni \
       /etc/kubernetes \
       /opt/cni \
       /opt/rke \
       /run/secrets/kubernetes.io \
       /run/calico \
       /run/flannel \
       /var/lib/calico \
       /var/lib/etcd \
       /var/lib/cni \
       /var/lib/kubelet \
       /var/lib/rancher/rke/log \
       /var/log/containers \
       /var/log/pods \
       /var/run/calico