NodePort是否可在Azure容器服务(Kubernetes)上运行 [英] Does NodePort work on Azure Container Service (Kubernetes)

问题描述

我为Kubernetes仪表板提供了以下服务

I have got the following service for Kubernetes dashboard

Name:               kubernetes-dashboard
Namespace:          kube-system
Labels:             k8s-app=kubernetes-dashboard
                    kubernetes.io/cluster-service=true
Annotations:        kubectl.kubernetes.io/last-applied-configuration={"kind":"Service","apiVersion":"v1","metadata":{"name":"kubernetes-dashboard","namespace":"kube-system","creationTimestamp":null,"labels":{"k8s-app":"k...
Selector:           k8s-app=kubernetes-dashboard
Type:               NodePort
IP:                 10.0.106.144
Port:               <unset> 80/TCP
NodePort:           <unset> 30177/TCP
Endpoints:          10.244.0.11:9090
Session Affinity:   None
Events:             <none>

根据文档，我跑了

az acs kubernetes browse

，它可用于 http://localhost:8001/ui

但是我也想在集群外部访问它. describe输出说它是使用端口30177上的NodePort公开的.

But I want to access it outside the cluster too. The describe output says that it is exposed using NodePort on port 30177.

但是我无法在http://<any node IP>:30177

推荐答案

我们知道，将服务公开到Internet，我们可以使用nodeport和LoadBalancer.

As we know, expose the service to internet, we can use nodeport and LoadBalancer.

据我所知，Azure现在不不支持节点端口类型.

As far as I know, Azure does not support nodeport type now.

但是我也想在集群外部访问它.

But I want to access it outside the cluster too.

我们可以使用LoadBalancer重新创建kubernetes仪表板，这是我的步骤:

we can use LoadBalancer to re-create the kubernetes dashboard, here are my stpes:

通过kubernetes UI
1. 删除 kubernetes-dashboard:选择命名空间到 kube-system ，然后选择服务，然后将其删除:

2. 修改kubernets-dashboard-service.yaml:SSH主VM，然后将更改类型从nodeport更改为 LoadBalancer :

1. Delete kubernetes-dashboard via kubernetes UI: select Namespace to kube-system, then select services, then delete it:

2. Modify kubernets-dashboard-service.yaml: SSH master VM, then change type from nodeport to LoadBalancer:

root @ k8s-master-47CAB7F6-0:/etc/kubernetes/addons#vi kubernetes-dashboard-service.yaml

root@k8s-master-47CAB7F6-0:/etc/kubernetes/addons# vi kubernetes-dashboard-service.yaml

apiVersion: v1
kind: Service
metadata:
  labels:
    kubernetes.io/cluster-service: "true"
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kube-system
spec:
  ports:
  - port: 80
    targetPort: 9090
  selector:
    k8s-app: kubernetes-dashboard
  type: LoadBalancer

开始 kubernetes从CLI 2.0浏览:

start kubernetes browse from CLI 2.0:

C:\ Users> az acs kubernetes browse -g k8s -n containerservice-k8s

C:\Users>az acs kubernetes browse -g k8s -n containerservice-k8s

然后使用SSH来主控VM来检查状态:

Then SSH to master VM to check the status:

现在，我们可以通过公共IP地址浏览用户界面:

Now, we can via the Public IP address to browse the UI:

更新:
下图显示了Azure容器服务集群(Kubernetes)的体系结构，我们应该使用Load Balancer将服务公开到Internet.

Update:
The following image shows the architecture of azure container service cluster(Kubernetes), we should use Load Balancer to expose the service to internet.

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