k8s calico-node错误日志 listen tcp: lookup localhost on 8.8.4.4:53: no such host

Posted 2023-03-21 牧之

项目场景：
K8s搭建

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

原因分析：
localhost未设置映射

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>