同一service下 pod相互ping不通

[DeyunLuo]

➜  ~ kgpoowide -A
+ kubectl get pods -o=wide -A
NAMESPACE     NAME                        READY   STATUS    RESTARTS   AGE     IP            NODE    NOMINATED NODE   READINESS GATES
default       my-nginx-5f44486bdb-q5dr8   1/1     Running   0          3m59s   172.33.99.2   node2   <none>           <none>
default       my-nginx-5f44486bdb-scttd   1/1     Running   0          3m59s   172.33.17.2   node3   <none>           <none>
default       tomcat                      1/1     Running   0          4m26s   172.33.29.3   node1   <none>           <none>
kube-system   coredns-5bf6df8fc6-7t8z6    1/1     Running   0          11h     172.33.99.3   node2   <none>           <none>
kube-system   coredns-5bf6df8fc6-bl8jk    1/1     Running   0          11h     172.33.17.3   node3   <none>           <none>
logging       fluent-bit-cwx4g            1/1     Running   0          11h     172.33.17.4   node3   <none>           <none>
logging       fluent-bit-mxw9j            1/1     Running   0          11h     172.33.99.4   node2   <none>           <none>
logging       fluent-bit-pp62g            1/1     Running   1          11h     172.33.29.2   node1   <none>           <none>
➜  ~ kgsvc -A
+ kubectl get service -A
NAMESPACE     NAME         TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)         AGE
default       kubernetes   ClusterIP   10.254.0.1      <none>        443/TCP         16h
default       my-nginx     ClusterIP   10.254.162.39   <none>        80/TCP          4m2s
kube-system   kube-dns     ClusterIP   10.254.0.2      <none>        53/UDP,53/TCP   11h
➜  ~ kg endpoints -A
+ kubectl get endpoints -A
NAMESPACE     NAME                      ENDPOINTS                                                  AGE
default       kubernetes                172.17.8.101:6443                                          16h
default       my-nginx                  172.33.17.2:80,172.33.99.2:80                              4m11s
kube-system   kube-controller-manager   <none>                                                     16h
kube-system   kube-dns                  172.33.17.3:53,172.33.99.3:53,172.33.17.3:53 + 1 more...   11h
kube-system   kube-scheduler            <none>                                                     16h
➜  ~ kex my-nginx-5f44486bdb-q5dr8 nginx -- bin/bash
+ kubectl exec -i -t my-nginx-5f44486bdb-q5dr8 nginx -- bin/bash
root@my-nginx-5f44486bdb-q5dr8:/# ping 172.33.17.2
PING 172.33.17.2 (172.33.17.2): 56 data bytes

^C--- 172.33.17.2 ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss
root@my-nginx-5f44486bdb-q5dr8:/#