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coredns 的 dns应该配置成什么地址

[root@k8s03 ~]# kubectl get pod -n kube-system
NAME READY STATUS RESTARTS AGE
calico-kube-controllers-577f77cb5c-rzgmn 1/1 Running 18 25h
calico-node-dpzgj 1/1 Running 6 25h
calico-node-q9ntj 1/1 Running 8 25h
coredns-6b6cd5c56f-2nbdp 0/1 CrashLoopBackOff 5 43m
coredns-6b6cd5c56f-bsj2g 0/1 CrashLoopBackOff 5 43m
nginx-proxy-k8s04 1/1 Running 11 28h
node-local-dns-ccdfs 1/1 Running 2 178m
node-local-dns-twttz 1/1 Running 2 178m
#查看coredns的错误日志
[root@k8s03 ~]# kubectl logs coredns-6b6cd5c56f-2nbdp -n kube-system
plugin/forward: no nameservers found

#查看dns
[root@k8s03 ~]# cat /etc/resolv.conf
#Generated by NetworkManager
[root@k8s03 ~]#

请问下,这个DNS解析 nameservers 应该配置成什么,配置成 8.8.8.8; 一直报 [ERROR] plugin/errors: 2 . NS: read udp 10.200.235.150:40485->10.112.34.7:53: i/o timeout

10.112.34.7 是我宿主机的IP地址;10.200.235.150 是 coredns的地址;

#nameserver 配置成了169.254.25.10,但是还是 timeout
[root@k8s03 ~]# cat /etc/resolv.conf
#Generated by NetworkManager
nameserver 169.254.25.10

[root@k8s03 ~]# kubectl get pod -n kube-system
NAME READY STATUS RESTARTS AGE
calico-kube-controllers-577f77cb5c-rzgmn 1/1 Running 20 25h
calico-node-dpzgj 1/1 Running 7 25h
calico-node-q9ntj 1/1 Running 9 25h
coredns-6b6cd5c56f-2nbdp 1/1 Running 13 81m
coredns-6b6cd5c56f-bsj2g 1/1 Running 13 81m
nginx-proxy-k8s04 1/1 Running 12 29h
node-local-dns-ccdfs 1/1 Running 3 3h36m
node-local-dns-twttz 1/1 Running 3 3h36m

#查看coredns日志
[root@k8s03 ~]# kubectl logs coredns-6b6cd5c56f-2nbdp -n kube-system
.:53
[INFO] plugin/reload: Running configuration MD5 = 5b233a0166923d642fdbca0794b712ab
CoreDNS-1.7.1
linux/amd64, go1.15.2, aa82ca6
[ERROR] plugin/errors: 2 5824462906982170619.2443049168994037257. HINFO: read udp 10.200.235.154:35988->169.254.25.10:53: i/o timeout
[ERROR] plugin/errors: 2 5824462906982170619.2443049168994037257. HINFO: read udp 10.200.235.154:59062->169.254.25.10:53: i/o timeout
[ERROR] plugin/errors: 2 . NS: read udp 10.200.235.154:33537->169.254.25.10:53: i/o timeout
[ERROR] plugin/errors: 2 . NS: read udp 10.200.235.154:35323->169.254.25.10:53: i/o timeout
[ERROR] plugin/errors: 2 . NS: read udp 10.200.235.154:40794->169.254.25.10:53: i/o timeout
[ERROR] plugin/errors: 2 . NS: read udp 10.200.235.154:47421->169.254.25.10:53: i/o timeout
[ERROR] plugin/errors: 2 . NS: read udp 10.200.235.154:59298->169.254.25.10:53: i/o timeout
[ERROR] plugin/errors: 2 . NS: read udp 10.200.235.154:49282->169.254.25.10:53: i/o timeout