Minikube公开了loadbalancer类型的随机端口。我可以定义特定端口吗?

时间:2018-02-07 20:19:12

标签: kubernetes minikube

在部署nginx(或任何应用程序)之后,我尝试使用以下配置文件公开它:

apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  type: LoadBalancer
  ports:
    - port: 80
      targetPort: 80
  selector:
    app: nginx

结果:

C:\install\kube>kubectl get service -l app=nginx
NAME      TYPE           CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
nginx     LoadBalancer   10.108.193.215   <pending>     80:31035/TCP   21h

请注意,端口号31035是随机分配的。是否可以定义特定端口?

版本:

C:\install\kube>minikube version
minikube version: v0.24.1

C:\install\kube>kubectl version
Client Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.0", GitCommit:"6e937839ac04a38cac63e6a7a306c5d035fe7b0a", GitTreeState:"clean", BuildDate:"2017-09-28T22:57:57Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"windows/amd64"}
Server Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.0", GitCommit:"0b9efaeb34a2fc51ff8e4d34ad9bc6375459c4a4", GitTreeState:"clean", BuildDate:"2017-11-29T22:43:34Z", GoVersion:"go1.9.1", Compiler:"gc", Platform:"linux/amd64"}

1 个答案:

答案 0 :(得分:7)

LoadBalancer服务在内部使用NodePort。是的,可以为服务指定NodePort。有两种方法可以做到:

  1. 在YAML规范文件中使用nodePort: 31036进行服务。
  2. 运行kubectl edit <service name>,修改nodePort下的ports字段并保存。
  3. 请注意,NodePort必须设置为标记配置范围30000-32767中的数字。否则,kubernetes会抛出错误。可以使用每https://kubernetes.io/docs/reference/generated/kube-apiserver/传递给NodePort的标记--service-node-port-range来更改此kube-apiserver范围:

      --service-node-port-range portRange      A port range to reserve for services
                                               with NodePort visibility. 
                                               Example: '30000-32767'. Inclusive at both ends
                                               of the range. (default 30000-32767)