Urban Treasure

Follow clues leading across a large city to find a needle in a haystack.

Setup

• Install both Docker Engine and Docker Compose.
• For deployments, install Kubernetes (kubectl). Set up ~/.kube/config for your production cluster. Your cloud hosting provider should provide instructions or a utility to set it up.

Development

1. Make any changes to the code.
2. Run: docker-compose up --build
3. Access the server at: http://localhost:3000
4. Press ^C to stop the server.
5. To make/test more changes, repeat from Step 1.

Deployment

Run commands to create and push Docker images:

npm run build
docker build -t jacksonrayhamilton/urbantreasure-nodejs -f nodejs.prod.Dockerfile .
docker build -t jacksonrayhamilton/urbantreasure-nginx -f nginx.Dockerfile .
docker push jacksonrayhamilton/urbantreasure-nodejs
docker push jacksonrayhamilton/urbantreasure-nginx

Change to a directory with Kubernetes config files:

cd k8s

To initially deploy the application, run:

kubectl create -f db-data-persistentvolumeclaim.yaml,mongodb-deployment.yaml,mongodb-service.yaml,nginx-deployment.yaml,nginx-service.yaml,nodejs-deployment.yaml,nodejs-service.yaml

To redeploy the application, you may typically run the following commands:

kubectl delete -f nginx-deployment.yaml,nodejs-deployment.yaml
kubectl create -f nginx-deployment.yaml,nodejs-deployment.yaml

Use kubectl to discover the EXTERNAL-IP of the load balancer through which you can access your deployed application:

$ kubectl get service nginx
NAME    TYPE           CLUSTER-IP      EXTERNAL-IP       PORT(S)        AGE
nginx   LoadBalancer   XXX.XXX.XXX.XXX 134.209.134.130   80:XXXXX/TCP   15m

Managing the database

Figure out the MongoDB pod name:

$ kubectl get pods
NAME                       READY   STATUS    RESTARTS   AGE
mongodb-xxx-yyy            1/1     Running   0          35m

Access the database:

kubectl exec --stdin --tty mongodb-xxx-yyy -- /bin/bash
mongo
> use urbantreasure

You could clear out any old data like so:

> db.games.deleteMany({})