项目场景：

K8s搭建

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问题描述：

查看pods状态，发现 calico-node异常

[root@k8s-master ~]# kubectl get pods --all-namespaces
NAMESPACE              NAME                                         READY   STATUS    RESTARTS   AGE
kube-system            calico-node-m5s7m                            0/1     Running   0          25s
kube-system            calico-node-s959x                            0/1     Running   0          12s

查看日志提示 :

listen tcp: lookup localhost on 8.8.4.4:53: no such host

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原因分析：

localhost未设置映射

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解决方案：

添加localhost映射：vi /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

删除calico-node，重启 ：kubectl delete pod calico-node-实际名称 -n kube-system
查看 ：kubectl get pods --all-namespaces -o wide

[root@k8s-master ~]# kubectl get pods --all-namespaces -o wide
NAMESPACE              NAME                                         READY   STATUS    RESTARTS   AGE   IP               NODE         NOMINATED NODE   READINESS GATES
kube-system            calico-node-bs8tr                            1/1     Running   0          35m   192.168.200.16   k8s-master   <none>           <none>
kube-system            calico-node-wltbq                            1/1     Running   0          34m   192.168.200.17   k8s-worker   <none>           <none>