如何使用GKE启用子域

Question

这应该是自动的，添加新的部署我不能改变每次的DNS记录。也许我用错误的方法来解决这个问题，我是GKE的新手，有什么建议吗？

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: my-host
spec:
  replicas: 1
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        name: my-host
        type: proxy
    spec:
      hostname: app
      containers:
        - image: nginx:alpine
          name: nginx
          ports:
            - name: nginx
              containerPort: 80
              hostPort: 80
      restartPolicy: Always
status: {}
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: my-subdomain-1
spec:
  replicas: 1
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        name: my-subdomain-1
        type: app
    spec:
      hostname: app
      subdomain: sub1
      containers:
        - image: nginx:alpine
          name: nginx
          ports:
            - name: nginx
              containerPort: 80
              hostPort: 80
      restartPolicy: Always
status: {}
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: my-subdomain-2
spec:
  replicas: 1
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        name: my-subdomain-2
        type: app
    spec:
      hostname: app
      subdomain: sub2
      containers:
        - image: nginx:alpine
          name: nginx
          ports:
            - name: nginx
              containerPort: 80
              hostPort: 80
      restartPolicy: Always
status: {}
---
apiVersion: v1
kind: Service
metadata:
  name: my-expose-dns
spec:
  ports:
    - port: 80
  selector:
    name: my-host
  type: LoadBalancer

Answer 1

server {
  listen       80;
  server_name ~^(?<subdomain>.*?)\.;
  resolver kube-dns.kube-system.svc.cluster.local valid=5s;

  location / {
      proxy_pass         http://$subdomain.my-internal-host.default.svc.cluster.local;
      root   /usr/share/nginx/html;
      index  index.html index.htm;
  }

  error_page   500 502 503 504  /50x.html;
  location = /50x.html {
      root   /usr/share/nginx/html;
  }
}