无法通过clusterIP访问Kubernetes多容器Pod p

我在docker-machine上使用Kubernetes v1.2.2，并且想从另一个在同一节点上运行的普通单容器pod连接到多容器Pod。无法通过clusterIP访问Kubernetes多容器Pod p

每个吊舱都有提供集群IP的服务。我可以通过相应服务的clusterIP从多容器吊舱（postgres-bw-service）访问单容器吊舱（postgres-service），但反之亦然。我查了KUBE-代理日志，发现没有服务端点为我多容器吊舱的服务设置：

I0408 16:20:06.693273  1 iptables.go:177] Could not connect to D-Bus system bus: dial unix /var/run/dbus/system_bus_socket: no such file or directory 
E0408 16:20:06.703401  1 server.go:340] Can't get Node "default", assuming iptables proxy: Get http://127.0.0.1:8080/api/v1/nodes/default: dial tcp 127.0.0.1:8080: connection refused 
I0408 16:20:06.711666  1 server.go:200] Using iptables Proxier. 
I0408 16:20:06.712420  1 server.go:213] Tearing down userspace rules. 
I0408 16:20:06.822631  1 conntrack.go:36] Setting nf_conntrack_max to 262144 
I0408 16:20:06.822833  1 conntrack.go:41] Setting conntrack hashsize to 65536 
I0408 16:20:06.823646  1 conntrack.go:46] Setting nf_conntrack_tcp_timeout_established to 86400 
E0408 16:20:06.826470  1 event.go:202] Unable to write event: 'Post http://127.0.0.1:8080/api/v1/namespaces/default/events: dial tcp 127.0.0.1:8080: connection refused' (may retry after sleeping) 
E0408 16:20:08.627546  1 event.go:202] Unable to write event: 'Post http://127.0.0.1:8080/api/v1/namespaces/default/events: dial tcp 127.0.0.1:8080: connection refused' (may retry after sleeping) 
E0408 16:20:18.629129  1 event.go:202] Unable to write event: 'Post http://127.0.0.1:8080/api/v1/namespaces/default/events: dial tcp 127.0.0.1:8080: connection refused' (may retry after sleeping) 
I0408 16:20:20.925349  1 proxier.go:484] Setting endpoints for "default/kubernetes:https" to [10.0.2.15:6443] 
I0408 16:20:20.925592  1 proxier.go:484] Setting endpoints for "default/postgres-service:postgres-tcp" to [172.17.0.3:5432] 
I0408 16:20:20.925841  1 proxier.go:565] Not syncing iptables until Services and Endpoints have been received from master 
I0408 16:20:20.931213  1 proxier.go:421] Adding new service "default/kubernetes:https" at 10.0.0.1:443/TCP 
I0408 16:20:20.931901  1 proxier.go:421] Adding new service "default/postgres-bw-service:postgres" at 10.0.0.139:5432/TCP 
I0408 16:20:20.932084  1 proxier.go:421] Adding new service "default/postgres-bw-service:kafka" at 10.0.0.139:9092/TCP 
I0408 16:20:20.932203  1 proxier.go:421] Adding new service "default/postgres-bw-service:zookeeper" at 10.0.0.139:2181/TCP 
I0408 16:20:20.932331  1 proxier.go:421] Adding new service "default/postgres-service:postgres-tcp" at 10.0.0.241:5432/TCP 
I0408 16:20:22.860305  1 proxier.go:494] Removing endpoints for "default/postgres-service:postgres-tcp" 
I0408 16:20:26.582664  1 proxier.go:484] Setting endpoints for "default/postgres-service:postgres-tcp" to [172.17.0.2:5432]

注意日志条目Setting endpoints for "default/postgres-service:postgres-tcp" to [172.17.0.2:5432]但在为Postgres-BW-服务没有类似的条目。我认为这就是为什么我不能访问多容器吊舱的原因，但我不知道是什么导致了这种情况。

更奇怪的是：我无法通过自己的服务的clusterIP访问一个容器，这对多容器容器和单容器容器都不起作用。

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编辑

kubectl get ep给我

kubectl get ep postgres-service 
NAME    ENDPOINTS   AGE 
postgres-service 172.17.0.2:5432 17h 

kubectl get ep postgres-bw-service 
NAME    ENDPOINTS   AGE 
postgres-bw-service <none>  17h

来源

2016-04-08 Moritz Becker

你可以发布'kubectl get ep postgres-service'的输出吗？我怀疑有服务配置或与豆荚本身有问题。 –

@VishnuKannan我相应地编辑了我的问题 –

的问题是，我荚的应用程序标签并没有在我的服务定义应用选择相匹配。

来源

2016-04-18 21:52:22

无法通过clusterIP访问Kubernetes多容器Pod p

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