Using virtual service to access internal services

1

To do an experiment, just use virtual service without binding to gateway
Access only between internal services
Through the following yaml file configuration, it was found that virtual service did not take effect at the time of access
Kubernetes Version 1.14.0
Istio Version 1.2.6
Access within the service is: curl nginx.test.svc.cluster.local:9090 Output page with nginx content

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment-v1
  namespace: test
  labels:
    version: v1
    app: nginx
spec:
  selector:
    matchLabels:
      app: nginx
      version: v1
  replicas: 1
  template:
    metadata:
      labels:
        app: nginx
        version: v1
    spec:
      containers:
      - name: nginx
        image: nginx:v4
        ports:
        - containerPort: 80
---
kind: Service
apiVersion: v1
metadata:
  name: nginx
  namespace: test
spec:
  selector:
    app: nginx
  ports:
  - protocol: TCP
    port: 9090
    targetPort: 80
---

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: nginx
  namespace: test
spec:
  hosts:
  - nginx.test.svc.cluster.local
  http:
  - match:
    - port: 9090
    route:
    - destination:
        host: nginx.test.svc.cluster.local
        port:
          number: 9090
    fault:
      abort:
        httpStatus: 204
        percent: 100