apiVersion: v1
kind: Namespace
metadata:
  labels:
    kubernetes.io/metadata.name: kiosk-app
  name: kiosk-app
spec:
  finalizers:
  - kubernetes
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: haproxy
  namespace: kiosk-app
data:
  haproxy.cfg: |
    global
      log stdout format raw local0
      maxconn     4000

    defaults
        mode                    http
        log                     global
        option                  dontlognull
        option                  redispatch
        retries                 3
        timeout http-request    10s
        timeout queue           1m
        timeout connect         10s
        timeout client          1m
        timeout server          1m
        timeout http-keep-alive 10s
        timeout check           10s
        maxconn                 3000

    frontend webserver
      bind 0.0.0.0:8080
      acl main_service_failed nbsrv(appserver_main) le 0
      use_backend appserver_backup if main_service_failed
      default_backend appserver_main

    backend appserver_main
      http-request set-header Host ipinfo.io
      balance roundrobin
      # 34.117.186.192 is one of the IP Addresses serving the website "ipinfo.io"
      server svc-main1 34.117.186.192:80 check

    backend appserver_backup 
      http-request set-header Host kiosk-app.kiosk-app.svc.cluster.local
      balance roundrobin
      server svc-backup1 kiosk-app:5000 check
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: haproxy
  namespace: kiosk-app
spec:
  replicas: 1
  selector:
    matchLabels:
      app: haproxy
  template:
    metadata:
      labels:
        app: haproxy
    spec:
      containers:
      - name: haproxy
        image: haproxy:latest
        volumeMounts:
        - name: config-volume
          mountPath: /usr/local/etc/haproxy/haproxy.cfg
          subPath: haproxy.cfg
        ports:
        - containerPort: 8080
      volumes:
      - name: config-volume
        configMap:
          name: haproxy
---
apiVersion: v1
kind: Service
metadata:
  name: haproxy
  namespace: kiosk-app
spec:
  type: ClusterIP
  ipFamilies:
  - IPv4
  ipFamilyPolicy: SingleStack
  clusterIP: 10.43.191.230
  ports:
  - port: 80
    protocol: TCP
    targetPort: 8080
  selector:
    app: haproxy
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: kiosk-app
  namespace: kiosk-app
spec:
  replicas: 1
  selector:
    matchLabels:
      app: kiosk-app
  template:
    metadata:
      labels:
        app: kiosk-app
    spec:
      containers:
      - name: kiosk-app
        image: quay.io/nmasse_itix/kiosk-app:latest
        ports:
        - containerPort: 5000
---
apiVersion: v1
kind: Service
metadata:
  name: kiosk-app
  namespace: kiosk-app
spec:
  type: ClusterIP
  ports:
  - port: 5000
    targetPort: 5000
  selector:
    app: kiosk-app