Demo App Deployer

README.md

Introduction

deployer.yml deploys or deletes instances of the Parks App demo application on given OpenShift cluster.

Deploying app on the source cluster

Login to your source cluster and store the KUBECONFIG in a file :

export KUBECONFIG=<PATH_TO_OCP3_CONFIG>
oc login ...

Deploy instances of applications :

ansible-playbook deployer.yml -e kubeconfig=<PATH_TO_OCP3_CONFIG> -e ns_count=100

Destroy :

ansible-playbook deployer.yml -e kubeconfig=<PATH_TO_OCP3_CONFIG> -e ns_count=100 -e destroy=true

Cleaning up app from destination cluster

Login to your source cluster and store the KUBECONFIG in a file :

export KUBECONFIG=<PATH_TO_OCP4_CONFIG>
oc login ...

Clean up :

ansible-playbook deployer.yml -e kubeconfig=<PATH_TO_OCP4_CONFIG> -e ns_count=100 -e destroy=true

defaults.yml

# how many namespaces to create on the source cluster? 
ns_count: 100
# prefix for namespace names
ns_prefix: parks-app

deployer.yml

---
- hosts: localhost
  connection: local
  vars_files:
  - ./defaults.yml
  tasks:
  - when: kubeconfig is not defined
    fail:
      msg: "`kubeconfig` var not set. Exiting..."

  - environment:
      KUBECONFIG: "{{ kubeconfig | mandatory }}"
    block:
    - name: "Ensuring requested resource state"
      k8s:
        state: "{{ 'absent' if destroy|d(false)|bool else 'present' }}"
        definition: "{{ lookup('template', './manifest.yml.j2') }}"
      vars:
        app_ns: "{{ ns_prefix }}-{{ item }}"
      with_sequence: start=1 end={{ ns_count }}
      loop_control:
        label: "{{ 'Deleting' if destroy|d(false)|bool else 'Creating' }} app in {{ app_ns }}"

manifest.yml.j2

---
apiVersion: v1
kind: Namespace
metadata:
  name: {{ app_ns }}
---
kind: ImageStream
apiVersion: v1
metadata:
  name: restify
  namespace: {{ app_ns }}
  labels:
    app: restify
status:
  dockerImageRepository: ''
---
kind: BuildConfig
apiVersion: v1
metadata:
  name: restify
  namespace: {{ app_ns }}
  labels:
    app: restify
spec:
  triggers:
  - type: GitHub
    github:
      secret: 4Xwu0tyAab90aaoasd88qweAasdaqvjknfrl3qwpo
  - type: Generic
    generic:
      secret: 4Xwu0tyAab90aaoasd88qweAasdaqvjknfrl3qwpo
  - type: ConfigChange
  - type: ImageChange
    imageChange: {}
  source:
    type: Git
    git:
      uri: https://github.com/ryanj/restify-mongodb-parks
      ref: master
  strategy:
    type: Source
    sourceStrategy:
      from:
        kind: ImageStreamTag
        namespace: openshift
        name: nodejs:0.10
  output:
    to:
      kind: ImageStreamTag
      name: "restify:latest"
---
kind: DeploymentConfig
apiVersion: v1
metadata:
  name: restify
  namespace: {{ app_ns }}
  labels:
    app: restify
spec:
  strategy:
    resources: {}
  triggers:
  - type: ConfigChange
  - type: ImageChange
    imageChangeParams:
      automatic: true
      containerNames:
      - restify
      from:
        kind: ImageStreamTag
        name: "restify:latest"
  replicas: 1
  selector:
    app: restify
    deploymentconfig: restify
  template:
    metadata:
      creationTimestamp: 
      labels:
        app: restify
        deploymentconfig: restify
    spec:
      volumes:
      - name: "restify-volume-1"
        emptyDir: {}
      containers:
      - name: restify
        image: library/restify:latest
        ports:
        - containerPort: 8080
          protocol: TCP
        env:
        - name: DATABASE_SERVICE_NAME
          value: mongodb
        - name: MONGODB_DATABASE
          value: restify-database
        - name: MONGODB_PASSWORD
          value: mongo-user-password
        - name: MONGODB_USER
          value: mongo-user-1
        volumeMounts:
        - name: "restify-volume-1"
          mountPath: "/run"
---
kind: Route
apiVersion: v1
metadata:
  name: restify
  namespace: {{ app_ns }}
  labels:
    app: restify
spec:
  to:
    kind: Service
    name: restify
  port:
    targetPort: '8080'
---
kind: Service
apiVersion: v1
metadata:
  name: restify
  namespace: {{ app_ns }}
  labels:
    app: restify
spec:
  ports:
  - name: 8080-tcp
    protocol: TCP
    port: 8080
    targetPort: 8080
  selector:
    app: restify
    deploymentconfig: restify
---
kind: DeploymentConfig
apiVersion: v1
metadata:
  name: mongodb
  namespace: {{ app_ns }}
spec:
  strategy:
    type: Recreate
  triggers:
  - type: ImageChange
    imageChangeParams:
      automatic: true
      containerNames:
      - mongodb-container
      from:
        kind: ImageStreamTag
        name: mongodb:latest
        namespace: openshift
  - type: ConfigChange
  replicas: 1
  selector:
    name: mongodb
  template:
    metadata:
      labels:
        name: mongodb
    spec:
      containers:
      - name: mongodb-container
        image: " "
        ports:
        - containerPort: 27017
          protocol: TCP
        env:
        - name: MONGODB_USER
          value: mongo-user-1
        - name: MONGODB_PASSWORD
          value: mongo-user-password
        - name: MONGODB_DATABASE
          value: restify-database
        - name: MONGODB_ADMIN_PASSWORD
          value: moogo-admin-pass
        imagePullPolicy: Always
      restartPolicy: Always
---
kind: Service
apiVersion: v1
metadata:
  name: mongodb
  namespace: {{ app_ns }}
spec:
  ports:
  - name: mongo
    protocol: TCP
    port: 27017
    targetPort: 27017
  selector:
    name: mongodb
  type: ClusterIP