Question

我创建了一个docker本地安装的kubernetes，我能够创建副本和服务，如下所示（这来自kubernetes 201）：

RC：

apiVersion: v1
kind: ReplicationController
metadata:
  name: nginx-controller
spec:
  replicas: 2
  # selector identifies the set of Pods that this
  # replication controller is responsible for managing
  selector:
    app: nginx
  # podTemplate defines the 'cookie cutter' used for creating
  # new pods when necessary
  template:
    metadata:
      labels:
        # Important: these labels need to match the selector above
        # The api server enforces this constraint.
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80

和service.yaml：

apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  ports:
  - port: 8000 # the port that this service should serve on
    # the container on each pod to connect to, can be a name
    # (e.g. 'www') or a number (e.g. 80)
    targetPort: 80
    protocol: TCP
    nodePort: 30000
  type: LoadBalancer
  # just like the selector in the replication controller,
  # but this time it identifies the set of pods to load balance
  # traffic to.
  selector:
    app: nginx

根据我的理解，我应该能够从节点中的端口30000访问服务，但我得到的只是一个空响应。有什么帮助吗？

Answer 1

如果您以非root用户身份运行kubernetes，则可能需要检查端口范围是否允许非root用户打开端口。

从未尝试过这种方法，但另一种方法是，您可以通过复制控制器在节点上打开特定容器的端口，方法是在hostPort: 30000下面添加- containerPort: 80

如何在kubernetes 1.0中的节点中公开服务？

1 个答案: