Kubernetes子节点node报这个错误。是flannel出错了。
导致在node上面ping, master上面的服务不通
在master, node节点上面运行，再重新安装master和node的kubernetes
kubeadm reset 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 ##重启kubelet systemctl restart kubelet ##重启docker systemctl restart docker