cni already has an IP address different from ...

错误如下

cni already has an IP address different from …

如图所示

缘由

node之前反复添加

解决方案

1 2	# 找到对应的节点 kubectl get pod --all-namespace -o wide

在对应node上执行如下命令

# 重置Kubernetes集群
kubeadm reset && systemctl stop kubelet && systemctl stop docker
# 删除残留
rm -rf /var/lib/cni/ && rm -rf /var/lib/kubelet/* && rm -rf /etc/cni/
# 删除旧网络
ifconfig cni0 down && ifconfig flannel.1 down && ifconfig docker0 down 
ip link delete cni0 && ip link delete flannel.1
# 重启服务
systemctl restart docker && systemctl start kubelet

在master上获取join token

1	kubeadm token create --print-join-command

重新加入节点

Reference

https://www.cnblogs.com/wangxu01/articles/11803547.html