https://k8s-school.fr/labs/k8s/en/tags/kustomize/index.htmlHugoenCopyright (c) 2025 Fabrice Jammes - Licensed under CC BY-SA 4.0Tue, 11 Nov 2025 14:15:26 +1000https://k8s-school.fr/labs/k8s/en/articles/kustomize-overview/index.htmlSun, 21 Sep 2025 14:15:26 +1000https://k8s-school.fr/labs/k8s/en/articles/kustomize-overview/index.htmlWhat is Kustomize? Native Kubernetes tool for customizing application configurations Template-free: Works with plain YAML manifests Declarative approach: Define variations as patches and overlays Built into kubectl since v1.14 (kubectl apply -k) Key Principles Base + Overlays: Keep common resources in base, environment-specific changes in overlays No templating: Pure YAML manipulation DRY (Don’t Repeat Yourself): Reuse base configurations across environments Core Concepts Directory Structure ├── base/ │ ├── kustomization.yaml │ ├── deployment.yaml │ └── service.yaml └── overlays/ ├── dev/ │ └── kustomization.yaml ├── staging/ │ └── kustomization.yaml └── production/ ├── kustomization.yaml └── patches/ └── resources-patch.yaml kustomization.yaml The main configuration file that defines:https://k8s-school.fr/labs/k8s/en/1_labs/kustomize/index.htmlTue, 11 Nov 2025 14:15:26 +1000https://k8s-school.fr/labs/k8s/en/1_labs/kustomize/index.htmlLab Overview In this quick lab, you will learn the essentials of Kustomize by creating a base configuration and two environment overlays (dev and production). Duration: 10-15 minutes Prerequisites: kubectl installed (with Kustomize support) Basic understanding of Kubernetes resources Exercise 1: Setup Base Configuration Objective Create a base configuration for a simple nginx application.