guestbook template

apiVersion: "template.openshift.io/v1"
kind: Template
metadata:
  name: guestbook-template
  annotations:
    description: "Guestbook application"
    tags: "guestbook,php,redis"
objects:
  - apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
    kind: Deployment
    metadata:
      name: redis-master
      labels:
        app: redis
    spec:
      selector:
        matchLabels:
          app: redis
          role: master
          tier: backend
      replicas: 1
      template:
        metadata:
          labels:
            app: redis
            role: master
            tier: backend
        spec:
          containers:
          - name: master
            image: ${REDIS_MASTER_IMAGE}
            resources:
              requests:
                cpu: 10m
                memory: 50Mi
              limits:
                cpu: 50m
                memory: 50Mi
            ports:
            - containerPort: 6379
  - apiVersion: v1
    kind: Service
    metadata:
      name: redis-master
      labels:
        app: redis
        role: master
        tier: backend
    spec:
      ports:
      - port: 6379
        targetPort: 6379
      selector:
        app: redis
        role: master
        tier: backend
  - apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
    kind: Deployment
    metadata:
      name: redis-slave
      labels:
        app: redis
    spec:
      selector:
        matchLabels:
          app: redis
          role: slave
          tier: backend
      replicas: 1
      template:
        metadata:
          labels:
            app: redis
            role: slave
            tier: backend
        spec:
          containers:
          - name: slave
            image: ${REDIS_SLAVE_IMAGE}
            resources:
              requests:
                cpu: 150m
                memory: 50Mi
              limits:
                cpu: 150m
                memory: 50Mi
            env:
            - name: GET_HOSTS_FROM
              value: dns
            ports:
            - containerPort: 6379
  - apiVersion: v1
    kind: Service
    metadata:
      name: redis-slave
      labels:
        app: redis
        role: slave
        tier: backend
    spec:
      ports:
      - port: 6379
      selector:
        app: redis
        role: slave
        tier: backend
  - apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
    kind: Deployment
    metadata:
      name: frontend
      labels:
        app: guestbook
    spec:
      selector:
        matchLabels:
          app: guestbook
          tier: frontend
      replicas: 3
      template:
        metadata:
          labels:
            app: guestbook
            tier: frontend
        spec:
          containers:
          - name: php-redis
            image: ${GUESTBOOK_IMAGE}
            resources:
              requests:
                cpu: 100m
                memory: 100Mi
              limits:
                cpu: 300m
                memory: 500Mi
            env:
            - name: GET_HOSTS_FROM
              value: dns
            ports:
            - containerPort: 8080
  - apiVersion: v1
    kind: Service
    metadata:
      name: frontend
      labels:
        app: guestbook
        tier: frontend
    spec:
      ports:
      - port: 8080
      selector:
        app: guestbook
        tier: frontend

parameters:
  - description: Docker image for redis master
    name: REDIS_MASTER_IMAGE
  - description: Docker image for redis slave
    name: REDIS_SLAVE_IMAGE
  - description: Docker image for guestbook
    name: GUESTBOOK_IMAGE
labels:
  app: guestbook