Talk: Managing an Akka Cluster on Kubernetes

This repo contains the slides and the sample code of the talk Managing an Akka Cluster on Kubernetes.

Content

• Slides
• Sample Scala project

Demo instructions

1. Install minikube:

   brew cask install minikube
   

2. Start minikube:

   minikube start
   

3. Enable Kubernetes Ingress addon:

   minikube addons enable ingress
   

4. After a minute, verify that Ingress addon has been started:

   kubectl get pods -n kube-system | grep nginx-ingress-controller
   

5. In order that Kubernetes finds the locally published Docker image of our application run:

   eval $(minikube docker-env)
   

6. Publish the trip backend service to the local Docker registry:

   cd code
   sbt docker:publishLocal
   

7. Deploy the backend service, and create Kubernetes service and ingress resource:

   kubectl apply -f .deployment/outgoing.yml
   kubectl apply -f .deployment/deployment.yml
   

8. Verify that backend service is running:

   kubectl get pod
   
   NAME                    READY     STATUS    RESTARTS   AGE
   trip-646cddc7b7-46k82   1/1       Running   0          32m
   trip-646cddc7b7-6zf5k   1/1       Running   0          32m
   trip-646cddc7b7-zjtvd   1/1       Running   0          32m
   

9. Access backend service via minikube IP address:

   http POST $(minikube ip)/trip/offer origin=A destination=B
   
   HTTP/1.1 200 OK
   Connection: keep-alive
   Content-Length: 45
   Content-Type: application/json
   Date: Thu, 04 Oct 2018 05:32:02 GMT
   Server: nginx/1.13.12
   
   {
       "price": {
           "amount": "10.00",
           "currency": "EUR"
       }
   }