Trivially simple nginx + flask Kubernetes scenario, easy to customize to create web demos and examples.
Edit 'nginx.conf' and 'app.py' with the desired frontend and backend configuration.
Create the associated configMaps:
kubectl create configmap nginxconfig --from-file nginx.conf
kubectl create configmap flaskapp --from-file app.py
create the replica controllers:
kubectl create -f nginxrc.yaml
kubectl create -f flaskrc.yaml