第一种，手动删除：
1. 删除/etc/kubernetes/文件夹下的所有文件
2. 删除$HOME/.kube文件夹
3. 删除/var/lib/etcd文件夹
[root@k8s-master ~]# rm -rf /etc/kubernetes/*
[root@k8s-master ~]# rm -rf ~/.kube/*
[root@k8s-master ~]# rm -rf /var/lib/etcd/*
4、停用上图所列的端口号
[root@k8s-master ~]# lsof -i :6443|grep -v "PID"|awk '{print "kill -9",$2}'|sh
[root@k8s-master ~]# lsof -i :10251|grep -v "PID"|awk '{print "kill -9",$2}'|sh
[root@k8s-master ~]# lsof -i :10252|grep -v "PID"|awk '{print "kill -9",$2}'|sh
[root@k8s-master ~]# lsof -i :10250|grep -v "PID"|awk '{print "kill -9",$2}'|sh
[root@k8s-master ~]# lsof -i :2379|grep -v "PID"|awk '{print "kill -9",$2}'|sh
[root@k8s-master ~]# lsof -i :2380|grep -v "PID"|awk '{print "kill -9",$2}'|sh
第二种，kubectl命令清除环境
[root@k8s-master ~]# kubeadm reset
重新执行初始化命令
