Start a small sample application in your kubernetes cluster. We'll use this app. It logs every http request made, so you can verify that the log aggregator is working:
kubectl run --image manifoldco/service-catalog-simple-web-app simple-web-app
kubectl expose deployment --type NodePort --port 80 simple-web-app
minikube service simple-web-app
You should now see the web app running in your browser: