无法通过IP连接到kubernetes的服务

我从k8s留言板示例（ https://github.com/GoogleCloudPlatform/kubernetes/tree/master/examples/guestbook ）中执行以下步骤，并且在本示例中描述了前端服务方面的问题。

frontend-controller-182tv 10.148.3.4 ... Running 4 minutes frontend-controller-i7hvs 10.148.4.3 ... Running 4 minutes frontend-controller-zwk1b 10.148.1.4 ... Running 4 minutes 

和服务是：

frontend name=frontend name=frontend 10.151.244.58 8000

所以它看起来不错，但实际上我不能连接到服务的IP的8000端口（远程主机）：

• Google云端平台项目请求和错误
• App Engine无法从Google Cloud Platform开发者控制台访问
• Google应用引擎SSL并映射到example.com/api
• 如何查看最近AppEngine mapreduce作业的状态？
• 由于权限，无法将war文件从本地目录复制到Google Cloud中的tomcat堆栈的web应用程序

 telnet 10.151.244.58 8000 Trying 10.151.244.58... 

输出的ifconfig：

 cbr0 Link encap:Ethernet HWaddr 12:1b:36:19:22:26 inet addr:10.148.0.1 Bcast:0.0.0.0 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1460 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) docker0 Link encap:Ethernet HWaddr 56:84:7a:fe:97:99 inet addr:172.17.42.1 Bcast:0.0.0.0 Mask:255.255.0.0 BROADCAST MULTICAST MTU:1460 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:536 (536.0 B) TX bytes:0 (0.0 B) eth0 Link encap:Ethernet HWaddr 42:01:0a:f0:f8:b7 inet addr:10.240.248.183 Bcast:10.240.248.183 Mask:255.255.255.255 UP BROADCAST RUNNING MULTICAST MTU:1460 Metric:1 RX packets:76763 errors:0 dropped:0 overruns:0 frame:0 TX packets:48794 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:143685366 (137.0 MiB) TX bytes:7641852 (7.2 MiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:250900 errors:0 dropped:0 overruns:0 frame:0 TX packets:250900 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:98458614 (93.8 MiB) TX bytes:98458614 (93.8 MiB) 

不知道我的错误在哪里，或者我还需要做什么…