无法通过clusterIP访问Kubernetes多容器Pod p
问题描述:
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
答
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。
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 –