GitHub Repo: SandeshOjha06/k8-operator — Clone this to follow along with the code.

The Problem

Standard Kubernetes primitives keep containers running, but they are fundamentally ignorant of your application's business logic. If you deploy a complex database or a custom backend, raw Deployments and StatefulSets are not enough. They cannot execute automated schema migrations, sequence complex initialization steps, or prevent a developer from manually scaling a pod via kubectl scale and accidentally breaking application state.

That is the exact problem Operators solve. An Operator is a custom Go controller running inside the cluster that extends the Kubernetes API by encoding human operational knowledge directly into software. Instead of writing a runbook for your team to follow when things go wrong, you build an Operator that constantly observes the cluster, detects configuration drift, and forces compliance without any human intervention.

What We're Building