istio Access Service with Domain Name + Custom Port

Networking
1

apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
name: nginx-gateway
namespace: test
spec:
selector:
istio: ingressgateway # use istio default controller
servers:

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
name: nginx-virtualservice
namespace: test
spec:
hosts:

  • “istio01.test.com”
  • “mesh”
    gateways:
  • nginx-gateway
    http:
  • match:
    • port: 31380
      uri:
      prefix: /
      route:
    • destination:
      host: nginx-service
      port:
      number: 10101

Yaml’s configuration file is as follows. I want to access the service by using domain name + port, but
Services cannot be accessed through this domain name in the browser: http://istio01.test.com:31380
If hosts use “*”, they can be accessed normally.
istio version 1.2.2
k8s version 1.14.0