[root@master-01 kubernetes]#  kubectl -n kube-system exec node-local-dns-lw7mh -it -- cat /etc/resolv.conf

nameserver 10.10.10.1

nameserver 10.10.10.2

nameserver 114.114.114.114

options single-request-reopen

[root@master-01 kubernetes]# kubectl delete -f nodelocaldns.yaml

serviceaccount "node-local-dns" deleted

service "kube-dns-upstream" deleted

configmap "node-local-dns" deleted

daemonset.apps "node-local-dns" deleted

service "node-local-dns" deleted

[root@master-01 kubernetes]# kubectl apply -f nodelocaldns.yaml

serviceaccount/node-local-dns created

service/kube-dns-upstream created

configmap/node-local-dns created

daemonset.apps/node-local-dns created

service/node-local-dns created

[root@master-01 kubernetes]# kubectl get pods -A -owide|grep loc

kube-system   node-local-dns-fn9wt                                                  1/1     Running   0             11s   192.168.1.13   master-03   <none>           <none>

kube-system   node-local-dns-hb4kh                                                  1/1     Running   0             11s   192.168.1.11   master-01   <none>           <none>

kube-system   node-local-dns-pdbsq                                                  1/1     Running   0             11s   192.168.1.14   node-01     <none>           <none>

kube-system   node-local-dns-th4bh                                                  1/1     Running   0             11s   192.168.1.12   master-02   <none>           <none>

[root@master-01 kubernetes]#  kubectl -n kube-system exec node-local-dns-fn9wt -it -- cat /etc/resolv.conf

nameserver 127.0.0.1

nameserver 192.168.3.56

nameserver 10.10.10.2

options single-request-reopen

[root@master-01 kubernetes]# cat /etc/resolv.conf

options timeout:1

options single-request-reopen

nameserver 127.0.0.1

nameserver 192.168.3.56

nameserver 10.10.10.2