Getting Started with Elixir on Kubernetes

The article presents a comprehensive guide for Elixir developers looking to run their applications on Kubernetes (K8s). It starts with an overview of the series' objectives and the required knowledge, including familiarity with Elixir, the Phoenix framework, container concepts, and basic Kubernetes principles. The author highlights the advantages of using Kubernetes in conjunction with Elixir, emphasizing features like efficient rollouts, horizontal scaling, controlled resource usage, and the ability to run distributed Elixir applications. A detailed walkthrough illustrates the process of running a simple Phoenix application on Docker and Kubernetes. This includes creating and deploying a Docker container image, setting up the local Kubernetes environment, building a new Phoenix app, configuring secrets for environment variables, and deploying to Kubernetes. The article also covers advanced topics such as rollouts, rollbacks, and scaling applications within Kubernetes. The content is both educational and practical, offering code snippets and insights on how to scale, update, and manage Elixir applications effectively within a Kubernetes cluster.