Deploying a FastAPI app to Kubernetes with health probes

This week, I was updating the image of a FastAPI app in our Kubernetes cluster, but I took the whole app down because the process failed due to an incompatible dependency with our server. The updated pod was unable to start, but we didn't have health checks in place, so the deployment continued to update the other replicas, taking down all app instances. In this tutorial, I will explain how to add a health check to your FastAPI app to ensure the deployment doesn't continue updating the pods if t