https://blog.csdn.net/gsying1474/article/details/53256599

执行：

[root@lab1 coredns]# kubectl delete -f coredns.yaml

现象：

[root@lab2 k8s]# kubectl get pods -n kube-system

NAME                       READY     STATUS              RESTARTS   AGE

coredns-6c65fc5cbb-7xvzs   /       ContainerCreating             2m

coredns-6c65fc5cbb-kh4zg   /       ContainerCreating             2m

原因：

修改node名称后的遗留症状

查看pod日志，最后部分

[root@lab2 k8s]# kubectl describe po coredns-6c65fc5cbb-7xvzs -n kube-system

"cni0" already has an IP address different from 10.244.5.1/

解决：

所有节点执行如下：

rm -rf /var/lib/cni/flannel/* && rm -rf /var/lib/cni/networks/cbr0/* && ip link delete cni0

rm -rf /var/lib/cni/networks/cni0/*