停止相关程序

systemctl stop kubelet

systemctl stop etcd

systemctl stop docker

卸载k8s

kubeadm reset -f

删除k8s相关目录

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

卸载k8s相关程序

yum -y remove kube*

更新镜像

yum clean all

yum -y update

yum makecache