k8s 节点删除
kubectl drain <node name> --delete-local-data --force --ignore-daemonsets
kubectl delete node <node name>
kubeadm reset
若需要重新加入 ，则再次执行 kubeadm init or kubeadm join
清理 Pods
kubectl delete node --all
rm -r /var/etcd/backups/* 删除备份。
卸载清理K8S
kubeadm reset -f
modprobe -r ipip
lsmod
rm -rf ~/.kube/
rm -rf /etc/kubernetes/
rm -rf /etc/systemd/system/kubelet.service.d
rm -rf /etc/systemd/system/kubelet.service
rm -rf /usr/bin/kube*
rm -rf /etc/cni
rm -rf /opt/cni
rm -rf /var/lib/etcd
rm -rf /var/etcd
