This repo contains the source code to build the vote, worker and results images for deploying the Docker samples [example-voting-app] in Otomi using the provided Helm charts in the Otomi Catalog.

Use the Build feature in Otomi to build the images with mode-Docker. Set the path to ./vote/Dockerfile (or ./worker/Dockerfile or ./result/Dockerfile).

Use the postgresql and the redis charts in the Otomi Catalog to create a Redis master-replica cluster and a PostgreSQL database. For this demo, Redis authentication needs to be turned off by setting auth.enabled=false.

Use the k8s-deployment chart to deploy the vote app. Use the following values:

Name: vote

containerPorts:
  - name: http
    containerPort: 80
    protocol: TCP
env:
  - name: REDIS_HOST
    value: <redis-cluster-name>-master

Use the k8s-deployment chart to deploy the worker app. Use the following values:

Name: worker

containerPorts:
  - name: http
    containerPort: 80
    protocol: TCP
env:
  - name: DATABASE_USER
    valueFrom:
      secretKeyRef:
        name: <psql-cluster-name>-superuser
        key: username
  - name: DATABASE_PASSWORD
    valueFrom:
      secretKeyRef:
        name: <psql-cluster-name>-superuser
        key: password
  - name: REDIS_HOST
    value: <redis-cluster-name>-master
  - name: DATABASE_HOST
    value: <psql-cluster-name>-rw

Use the k8s-deployment chart to deploy the result app. Use the following values:

Name: result

containerPorts:
  - name: http
    containerPort: 80
    protocol: TCP
env:
  - name: DATABASE_USER
    valueFrom:
      secretKeyRef:
        name: <psql-cluster-name>-superuser
        key: username
  - name: DATABASE_PASSWORD
    valueFrom:
      secretKeyRef:
        name: <psql-cluster-name>-superuser
        key: password
  - name: DATABASE_HOST
    value: <psql-cluster-name>-rw

Register the vote and result services in Otomi and configure them for external exposure. If Network policies are enabled, then register all services and configure the network policies:

• Register the <workload-name>-rw Postgresql service
• Set exposure to Private (default)
• In Network policies add the Pod Selector <postgres-workload-name>
• Select Allow selected
• Add From team name <team-name> and From label value <postgres-workload-name>
• Add From team name <team-name> and From label value <worker>
• Add From team name <team-name> and From label value <result>

• Register the <workload-name>-master Redis service
• Set exposure to Private (default)
• In Network policies add the Pod Selector <redis-workload-name>
• Select Allow selected
• Add From team name <team-name> and From label value <redis-workload-name>
• Add From team name <team-name> and From label value <worker>
• Add From team name <team-name> and From label value <vote>

• Register the vote service
• Set exposure to External

• Register the <worker service
• Set exposure to Private (default)

• Register the <result> service
• Set exposure to External