What Are the Advantages of Using Helm Instead of Standard YAML Files in Kubernetes?

Helm acts like a package manager for Kubernetes, simplifying the process of deploying applications. While for small personal projects it might not seem essential, it's incredibly useful for larger teams. Helm allows teams to share applications like databases (think PostgreSQL or Redis) and control configurations through a single values.yaml file. This means you get a streamlined way to manage complex setups with lots of YAML files. Beyond Helm, you also have options like Kustomize for adding layers to your YAML files, and tools like Scaffold and Pulumi to explore as well.

Helm allows you to share deployment configurations easily and make adjustments when needed, which is great for varying customer setups. Plus, it keeps track of what gets deployed, helping avoid issues during cleanup that can happen with commands that don’t maintain state. This means it manages resources intentionally, preventing accidental deletions.

With Helm, you can install, upgrade, or uninstall applications with just one command each, similar to npm or yarn. Plus, it provides templating, allowing you to tailor deployments to different environments like local, dev, or AWS, without remaking the entire configuration from scratch. After trying it out, we found it completely transformed our Kubernetes experience—it's like a cloud platform that you control without vendor lock-in.

Helm really shines when you're handling multiple YAML files for an app. It allows you to bundle everything neatly, so instead of managing various configurations, you can just focus on the templated values you need to adjust. This is especially handy when dealing with shared resources across different environments.

There are a couple of main advantages to Helm that I've noticed. First, it distributes applications easily, letting users adjust installations with defined template variables. Second, it bundles all necessary YAML files for deployment or removal, making it simple to manage. For my team, we use Helm charts to manage different environments for the same application efficiently. If Helm isn't appealing yet, check out Kustomize—it sticks to basic YAML but lets you specify the changes you need.