Combining APIM + AKS

gistfile1.txt

## Overview

There are 3 options listed here: https://docs.microsoft.com/en-us/azure/api-management/api-management-kubernetes
* APIM + Public AKS Service, no shared Vnet
* APIM + Public AKS Ingress, no shared Vnet
* APIM + Private AKS in same Vnet, no ingress

A missing scenario is: 
* APIM + Private AKS in same Subnet, with ingress

To make this work:
* Create APIM instance
  * Create Blank API
    * API URL suffix: 
      * e.g. dev-pod-info
    * Web service: http://<IP of Ingress>/<same value as API URL Suffix>
      * e.g. https://tmfflux.azure-api.net/dev-pod-info

Create ingress similiar to template below
* The /$2 is important to remove the "dev-pod-info" path as it comes through since your app is likely not expecting it.
  

ingress.yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  annotations:
    # the /$2 is to remove the 
    nginx.ingress.kubernetes.io/rewrite-target: /$2
  name: podinfo-ingress
  namespace: demo
spec:
  rules:
  - http:
      paths:
      - backend:
          serviceName: podinfo
          servicePort: 9898
        path: /dev-pod-info
  - http:
      paths:
      - backend:
          serviceName: podinfo
          servicePort: 9898
        path: /prod-pod-info  

kuard.yaml

# Assumes ingress controller is already running
# Make sure to replace IP of Ingress Controller Service
---
apiVersion: apps/v1beta1
kind: Deployment
metadata:
  name: kuard
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: kuard
    spec:
      containers:
      - name: kuard
        image: gcr.io/kuar-demo/kuard-amd64:1
        ports:
        - containerPort: 8080
          name: http
          protocol: TCP
---
apiVersion: v1
kind: Service
metadata:
  name: kuard
  labels:
    name: kuard
spec:
  type: ClusterIP
  ports:
    - port: 80
      targetPort: 8080
      protocol: TCP
  selector:
    app: kuard
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: kuard
spec:
  rules:
  - host: kuard.<IP of Ingress Controller Service>.nip.io
    http:
      paths:
      - path: /
        backend:
          serviceName: kuard
          servicePort: 80

podinfo.yaml

# Assumes ingress controller is already running
# Make sure to replace IP of Ingress Controller Service
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: podinfo
  labels:
    app: podinfo
spec:
  selector:
    matchLabels:
      app: podinfo
  template:
    metadata:
      labels:
        app: podinfo
    spec:
      containers:
      - name: podinfod
        image: stefanprodan/podinfo:3.1.5
        imagePullPolicy: IfNotPresent
        ports:
        - name: http
          containerPort: 9898
          protocol: TCP
        - name: http-metrics
          containerPort: 9797
          protocol: TCP
        - name: grpc
          containerPort: 9999
          protocol: TCP
        command:
        - ./podinfo
        - --port=9898
        - --port-metrics=9797
        - --grpc-port=9999
        - --grpc-service-name=podinfo
        - --level=info
        - --random-delay=false
        - --random-error=false
        - --random-error=false
        - --ui-message='Service #1'
        env:
        - name: PODINFO_UI_COLOR
          value: "#34577c"
---
apiVersion: v1
kind: Service
metadata:
  name: podinfo
  labels:
    app: podinfo
spec:
  type: ClusterIP
  selector:
    app: podinfo
  ports:
  - name: http
    port: 9898
    protocol: TCP
    targetPort: http
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: podinfo
spec:
  rules:
  - host: podinfo.<IP of Ingress Controller Service>.nip.io
    http:
      paths:
      - path: /
        backend:
          serviceName: podinfo
          servicePort: 80