This repo serves like as an example of two http services written in Python served together as a single pod.

Note: this is a simplistic example. On production you might want to:

• define probes;
• assure sidecar fully starts before main app (e.g. move sidecar into initContainers section) ;
• think through what should happen if any of the apps is not healthy;
• etc...

How to follow the example:

0. Install docker (follow the official guide)
1. Install minikube (follow official guide) If you run into any issues I recommend installing minikube' dashboard for ease of debugging and overview.
2. Make sure you are not targetting production with kubectl (e.g. run kubectx)
3. Run local image registry

• https://minikube.sigs.k8s.io/docs/handbook/registry/#docker-on-macos
• run minikube addons enable registry
• run minikube ip
• run export MINIKUBE_IP=<> and put ip from previous step there. I do this explicitly because output of my command had a section about running on M1 and thus spoiling the official guide.
• run docker run --rm -it --network=host alpine ash -c "apk add socat && socat TCP-LISTEN:5000,reuseaddr,fork TCP:${MINIKUBE_IP}:5000"

4. Build image

• run docker build -t sidedemo .
• run docker tag sidedemo localhost:5000/sidedemo
• run docker push docker tag sidedemo localhost:5000/sidedemo

5. Start the service

• run kubectl apply -f my_demo.yaml
• run kubectl port-forward sidecar-python-demo 8080:80

Now you should be able to open localhost:80. Good luck, sailor!