Phippy

Simple tutorial to build and deploy a simple Python app in Kubernetes.

Build a Docker image from existing Python source code and push it to Docker Hub.

You need to replace DOCKER_HUB_USER with your Docker Hub username.

docker build -t <DOCKER_HUB_USER>/phippy .
docker push <DOCKER_HUB_USER>/phippy

Launch the app using Docker

You can use the existing commands to build/push/run the app:

make build
make push
make run

Test the app

make run
curl localhost:5000

Scale up the app with Docker Compose

docker-compose up -d --scale web=5

Deploy the app to Kubernetes

kubectl apply -f kubernetes/

Check that the Pods and Services are created

kubectl get pods
kubectl get svc

Get the NodePort for the web Service. Make a note of the port.

kubectl describe svc phippy

Test the app by accessing the NodePort of one of the nodes.

kubectl get nodes
curl <NODE_IP>:<NODEPORT>

Optional - deploy app via ingress

kubectl apply -f kubernetes/ingress

Test the app by accessing the ingress name and port

kubectl get ingress
kubectl describe ingress phippy

curl http://phippy.local