Example web application composed of multiple services, pods, and containers

example-deployment_main.yml

---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: example
spec:
  replicas: 2
  selector:
    matchLabels:
      app: example
  template:
    metadata:
      name: example
      labels:
        app: example
        version: "1"
    spec:
      volumes:
        - name: cloudsql-oauth-credentials
          secret:
            secretName: cloudsql-oauth-credentials
        - name: ssl-certs
          hostPath:
            path: /etc/ssl/certs
        - name: cloudsql
      containers: 
        - name: sql-proxy
          image: b.gcr.io/cloudsql-docker/gce-proxy:latest
          imagePullPolicy: Always
          volumeMounts:
            - name: cloudsql-oauth-credentials
              mountPath: /secrets/cloudsql
              readOnly: true
            - name: ssl-certs
              mountPath: /etc/ssl/certs
            - name: cloudsql
              mountPath: /cloudsql
          args:
            - /cloud_sql_proxy
            - --instances=usp-sites:europe-west1:sql-small-low=tcp:3306
            - -credential_file=/secrets/cloudsql/credentials.json
        - name: example
          image: examples/sites/example.pl:v0.0.14
          imagePullPolicy: Always
          ports:
          - containerPort: 80
          env:
            - name: DB_USER
              value: example
            - name: DB_PASSWORD
              value: ""
            - name: DB_NAME
              value: example
          volumeMounts:
            - name: cloudsql
              mountPath: /cloudsql
        - name: redirector
          image: examples/redirector:v0.8
          imagePullPolicy: Always
          ports:
          - containerPort: 81
          env:
          - name: REDIRECT_TO
            value: www.example.pl

example-deployment_pro.yml

---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: example-pro
spec:
  replicas: 1
  selector:
    matchLabels:
      app: example-pro
  template:
    metadata:
      name: example-pro
      labels:
        app: example-pro
        usp-subsite: pro
    spec:
      containers:
        - name: example-pro
          image: examples/sites/example.pl-pro.pl:v0.6
          imagePullPolicy: Always
          ports:
            - containerPort: 80
        - name: echo
          image: gcr.io/google_containers/echoserver:1.4
          ports:
            - containerPort: 8080
          resources:
            requests:
              cpu: "10m"

example-ingress.yml

---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: example
  annotations:
    kubernetes.io/ingress.class: "nginx"
    kubernetes.io/tls-acme: "true"
    staticIPNameKey: "kubernetes-lb"
    kubernetes.io/ingress.allow-http: "true"
spec:
  tls:
    - hosts:
        - www.example.pl
        - example.pl
      secretName: example-ssl
  rules:
    - host: www.example.pl
      http: &example
        paths:
          - backend:
              serviceName: example
              servicePort: 80
            path: /
          - backend:
              serviceName: example-pro
              servicePort: 80
            path: /pro/
          - path: /healthz
            backend:
              serviceName: example-pro
              servicePort: 8080
    - host: example.pl
      http: *example

example-service_main.yml

---
apiVersion: v1
kind: Service
metadata:
  name: example
  labels:
    app: example
spec:
  ports:
    - port: 80
      targetPort: 80
      name: http
      protocol: TCP
    - port: 81
      targetPort: 81
      name: redirector
      protocol: TCP
  selector:
    app: example
  type: NodePort

example-service_pro.yml

---
apiVersion: v1
kind: Service
metadata:
  name: example-pro
  labels:
    app: example-pro
    usp-subsite: pro
spec:
  ports:
    - port: 80
      targetPort: 80
      name: pro
      protocol: TCP
    - port: 8080
      targetPort: 8080
      name: echoserver
      protocol: TCP
  selector:
    app: example-pro