Mastering Kubebuilder v4: An In-depth Guide

Exploring New Features, Migration Tools

Stefanie Lai
5 min readMay 14, 2024
from Unsplash

Operator Pattern is commonly used for stateful services in Kubernetes development and maintenance, for implementing which Kubebuilder framework is one of the most popular tools. It provides developers with a set of tools and libraries for building and packaging custom Kubernetes APIs, combines CRDs (Custom Resource Definitions) and controllers for extending the functionality of Kubernetes and creating custom resources and operation logic, managing and automating the lifecycle of resources in the Kubernetes cluster.

Before going deeper into Kubebuilder v4, I suggest you to go through the following articles, if you are not so familiar with Kubebuilder.

Kubebuilder v4 Upgrade