[root@k8s-master4 ~]# journalctl -u kubelet.service -f

[root@k8s-master1 ~]# kubectl describe node k8s-master4 -n kube-system | grep -A 20 "Conditions"

报错信息：

container runtime network not ready: NetworkReady=false reason:NetworkPluginNotReady message:Network plugin returns error: cni plugin not initialized

解决方法：

1）重启节点的containerd服务

[root@k8s-master4 ~]# systemctl restart containerd.service

2）查看集群状态

[root@k8s-master1 ~]# kubectl get nodes -o wide

至此，Node节点状态已变成Ready。
Kubernetes