Kustomize

Kustomize is an open-source tool for customizing Kubernetes configurations declaratively without modifying the original YAML files. It uses a 'base' and 'overlay' approach to apply modifications, patches, and common configurations for different environments or use cases, fostering reusability…

Key facts

First appeared: 2017
Category: technology
Problem solved: Kustomize addresses the challenge of managing diverse Kubernetes application configurations across multiple environments (e.g., development, staging, production) without resorting to complex templating languages or repetitive copy-pasting of YAML. It provides a native, non-templating way to customize manifests by overlaying changes.
Platforms: macOS, Windows, Linux

Related technologies

Flux CD
Kubernetes
kubectl
Argo CD
Git
GitLab CI/CD
GitHub Actions

Notable users

Google (originator and maintainer)
Many cloud-native companies
Organizations leveraging Kubernetes for application deployment