Azure AKS | Application gateway | Ingress | Backend Prefix

Question

I am bit confused the way path resolves the endpoint, does it show in any logs the final endpoint it creates. I am stuck with this now. Below is the endpoint which I wanted to call:-

https://hostname/api/orders/employees. And to call this endpoint through Ingress application gateway, this is how I configured but it always return 502 bad gateway error.

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ordersapi
  namespace: orders
  annotations:
    kubernetes.io/ingress.class: azure/application-gateway
    appgw.ingress.kubernetes.io/appgw-ssl-certificate: "wildcard.apps.com"
    appgw.ingress.kubernetes.io/ssl-redirect: "true"
spec:
  rules:
  - host: orders.apps.com
    http:
      paths:
      - path: /api/orders/employees
        backend:
          serviceName: orderservice
          servicePort: 80

Answer 1

Finally, there are two solution to this problem:-

First

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ordersapi
  namespace: orders
  annotations:
    kubernetes.io/ingress.class: azure/application-gateway
    appgw.ingress.kubernetes.io/appgw-ssl-certificate: "wildcard.apps.com"
    appgw.ingress.kubernetes.io/ssl-redirect: "true"
spec:
  rules:
  - host: orders.apps.com
    http:
      paths:
      - path: /api/orders/employees
        backend:
          serviceName: orderservice
          servicePort: 80
      - path: /api/product/products
        backend:
          serviceName: orderservice
          servicePort: 80h

Second

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: ordersapi
  namespace: orders
  annotations:
    kubernetes.io/ingress.class: azure/application-gateway
    appgw.ingress.kubernetes.io/backend-path-prefix: "/api/"
    appgw.ingress.kubernetes.io/appgw-ssl-certificate: "wildcard.apps.com"
    appgw.ingress.kubernetes.io/ssl-redirect: "true"
spec:
  rules:
  - host: orders.apps.com
    http:
      paths:
      - path: /api/*
        backend:
          serviceName: orderservice
          servicePort: 80