Kustomize
Kustomize is built into kubectl (kubectl apply -k). You keep one base and describe per-environment changes, such as replicas, images or namespaces, in overlays. It is an alternative to Helm values files.
Key concepts #
- Base and overlay: shared manifests and their variants.
- Patches: change fields of existing resources.
- Generators: create ConfigMaps and Secrets from files.
Learn it #
Follow Kubernetes overlays with Kustomize. Argo CD deploys Kustomize directories directly.
More tutorials that use Kustomize
Related tutorials
- Kubernetes Tutorials
Kubernetes Overlays with Kustomize: One Base, Many Environments
Use Kustomize with kubectl to keep one set of manifests and patch them per environment: namespaces, replicas, images, ConfigMaps and strategic merge patches.
Containers and Orchestration
Rancher Desktop
Rancher Desktop is a free open source app with a container engine (containerd or dockerd) and a local K3s Kubernetes cluster for Linux, macOS and Windows.
Containers and Orchestration
Helm
Helm is the package manager for Kubernetes: it installs and upgrades applications from versioned charts with configurable values.