k8s卸载

步骤如下：

1、kubeadm reset -f

2、rm -rf ~/.kube/

3、rm -rf /etc/kubernetes/

4、rm -rf /etc/systemd/system/kubelet.service.d

5、rm -rf /etc/systemd/system/kubelet.service

6、rm -rf /usr/bin/kube*

7、rm -rf /etc/cni

8、rm -rf /opt/cni

9、rm -rf /var/lib/etcd

10、rm -rf /var/etcd