13.2、ingress跨NS代理

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
  namespace: kube-ops
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        imagePullPolicy: IfNotPresent
        ports:
        - name: web
          containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: test-ng
  namespace: kube-ops
spec:
  selector:
    app: nginx
  ports:
  - name: web
    port: 80
---
apiVersion: v1
kind: Service
metadata:
  name: test-ingress
spec:
  type: ExternalName
  ports:
  - name: web
    port: 80
  externalName: test-ng.kube-ops.svc.cluster.local
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: nginx-ingress-demo
  annotations:
    kubernetes.io/ingress.class: "traefik"
spec:
  rules:
  - host:
    http:
      paths:
      - backend:
          serviceName: test-ingress 
          servicePort: 80
        path: /