当我尝试为我的库伯内特斯集群创建入口资源时（入口控制器已经创建），入口资源/规则正在创建，我能够在kubectl中看到。但是当我做kubectl描述时，我看到一个错误：

默认后端：默认-超文本传输协议-backend：80（

这是预期的吗？？我什至无法使用我在入口资源中定义的DNS名称（hotel.example.com）连接到我的应用程序。是由于这个超文本传输协议-backend错误吗？如果不是，任何建议使应用程序连接！！

[dockuser@hostname]$ kubectl describe ing hotel-ingress -n hotel
Name:             hotel-ingress
Namespace:        hotel
Address:
Default backend:  default-http-backend:80 (<error: endpoints "default-http-backend" not found>)
Rules:
  Host         Path  Backends
  ----         ----  --------

  hotel.example.com
               /     hotel-svc:80 (10.36.0.2:80,10.44.0.2:80)
Annotations: 
Events:

部署文件：namespace. yaml

apiVersion: v1
kind: Namespace
metadata:
  name: hotel

ingress. yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: hotel-ingress
  namespace: hotel
spec:
  rules:
  - host: hotel.example.com
    http:
      paths:
      - path: /
        backend:
          serviceName: hotel-svc
          servicePort: 80

部署. yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hotel
  namespace: hotel
spec:
  replicas: 2
  selector:
    matchLabels:
      app: hotel
  template:
    metadata:
      labels:
        app: hotel
    spec:
      containers:
      - name: hotel
        image: nginxdemos/hello:plain-text
        ports:
          - containerPort: 80

service. yaml

apiVersion: v1
kind: Service
metadata:
  name: hotel-svc
  namespace: hotel
spec:
  selector:
    app: hotel
  ports:
    - port: 80
      targetPort: 80