nslookup - - - > kube-apiserver - - - > kube-proxy - - - > kube-dns ===》》 得到svc-dns
$ kubectl exec -it busyboxplus sh //需要进入容器 [ root@busyboxplus:/ ]$ nslookup redis.sentry Server: 10.96.0.10 Address 1: 10.96.0.10 kube-dns.kube-system.svc.cluster.local Name: redis.sentry Address 1: 10.108.132.230 redis.sentry.svc.cluster.local
