完整移除k8s

• kubeadm reset -f
• rm $HOME/.kube/config
• systemctl stop kubelet
• systemctl stop docker
• rm -rf /var/lib/cni/
• rm -rf /var/lib/kubelet/*
• rm -rf /etc/cni/
• ifconfig cni0 down
• ifconfig flannel.1 down
• ifconfig docker0 down
• ip link delete cni0
• ip link delete flannel.1
• systemctl restart kubelet
• systemctl restart docker