How to configure ingress gateway in istio?

Question

I\'m new to istio, and I want to access my app through istio ingress gateway, but I do not know why it does not work. This is my kubenetes_deploy.yaml file cont

Answer 1

First of all, as @Abhyudit Jain mentioned you need to correct port in VirtualService to 8000

And then you just add another port to your istio-ingressgateway service

kubectl edit svc istio-ingressgateway -n istio-system

add section:

ports:
  - name: http
    nodePort: 30001
    port: 15000
    protocol: TCP
    targetPort: 80

This will accept HTTP traffic on port 15000 and rout it to your destination service on port 8000

simple schema as follows:

incoming traffic --> istio-gateway service --> istio-gateway --> virtual service --> service --> pod

Answer 2

You batman service listens on port 8000 and forwards traffic to container's port 7000.

The istio traffic works like this:

ingress-gateway -> virtual-service -> destination-rule [optional] -> service

So your virtual service should be like:

apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: batman
spec:
  hosts:
  - "*"
  gateways:
  - batman-gateway
  http:
    - match:
      route:
      - destination:
          host: batman
          port:
            number: 8000  <--- change