k8s的dns启动正常,但是在安装redis时nslookup redis-app-0.redis-service错误为:server can't find redis-app-0.redis-service: NXDOMAIN
下面是k8s的system命名空间,可以看到dns是启动的
[k8s@centos01 kubernetes-dashboard]$ kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
coredns-5c98db65d4-sjmp5 1/1 Running 10 18d
coredns-5c98db65d4-v9zfs 1/1 Running 10 18d
etcd-centos01 1/1 Running 13 18d
kube-apiserver-centos01 1/1 Running 15 18d
kube-controller-manager-centos01 1/1 Running 15 18d
kube-flannel-ds-amd64-cc9nc 1/1 Running 16 18d
kube-flannel-ds-amd64-hzvxc 1/1 Running 9 18d
kube-flannel-ds-amd64-l48zg 1/1 Running 9 18d
kube-proxy-8r2rj 1/1 Running 11 18d
kube-proxy-gbvr8 1/1 Running 9 18d
kube-proxy-m85wg 1/1 Running 9 18d
kube-scheduler-centos01 1/1 Running 14 18d
kubernetes-dashboard-f4f9ff989-blfkh 1/1 Running 9 17d
下面是nslookup redis时报的错误:
[k8s@centos01 kubernetes-dashboard]$ kubectl run -i --tty --image busybox dns-test --restart=Never --rm /bin/sh
If you don't see a command prompt, try pressing enter.
/ # nslookup redis-app-0.redis-service
Server: 10.96.0.10
Address: 10.96.0.10:53
** server can't find redis-app-0.redis-service: NXDOMAIN
*** Can't find redis-app-0.redis-service: No answer