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Accessing Services Inside the Mesh from External Applications

This page explains how external applications can access services inside the mesh through configuration.

Prerequisites:

  • The service bookinfo.com is running in the default namespace of the mesh global-service .

  • The mesh provides an ingressgateway instance.

Objective: Expose the internal service bookinfo.com to the outside.

  1. Use URI matching to route external application access to specific pages of the bookinfo.com service.

    Access Route

  2. Click Traffic Management -> Gateway -> Create to create a gateway for the Istio gateway and expose the service and ports externally.

    Create Rule

    Here is an example YAML after completing the configuration:

    apiVersion: networking.istio.io/v1beta1
kind: Gateway
metadata:
  name: bookinfo-gateway
spec:
  selector:
    istio: ingressgateway # Use the default controller
  servers:
  - port:
      number: 80
      name: http
      protocol: HTTP
    hosts:
    - bookinfo.com

  3. Click OK to return to the gateway list, where you will see a successful creation message.

  4. Click Traffic Management -> Virtual Service -> Create to create a routing rule that routes based on the URI in the request to the specified pages.

    Create Routing Rule

    Here is an example YAML after completing the configuration:

    apiVersion: networking.istio.io/v1beta1
kind: VirtualService
metadata:
  name: bookinfo
spec:
  hosts:
  - bookinfo.com
  gateways:
  - bookinfo-gateway
  http:
  - match:
      - uri:
          exact: /productpage
      - uri:
          exact: /login
      - uri:
          exact: /logout
      - uri:
          prefix: /api/v1/products
    route:
    - destination:
        host: productpage
        port:
          number: 9080

  5. Click OK to return to the virtual service list, where you will see a successful creation message.

Info

For more detailed instructions, you can refer to the video tutorial.

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