All You Need to Know About Kustomize
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Kustomize is a Kubernetes native configuration management tool that allows customizing application configurations without templating. It takes over existing application manifests and is built into the kubectl command. Kustomize introduces an overlay pattern to customize resources through a kustomization file. Other configuration tools like Helm have template languages that can be ugly due to templating and conflict with other tools, while Kpt automates editing but requires functions for transformations. Kustomize aims to provide a simpler way to customize configurations and can integrate with tools like ArgoCD. Challenges include dealing with incompatible upstream changes and difficulties reviewing pull requests.
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All You Need to Know About Kustomize
- 1. All You Need to Know About Kustomize Lingxian Kong 28th Nov 2023
- 2. About Lingxian 1 2012 ~ 2016 Huawei OpenStack DevTeam Lead 2 2016 ~ 2021 Catalyst Cloud Senior Cloud Platform Engineer 3 2021 ~ Now Sourced Group Lead Cloud Consultant AWS Certified Solutions Architect Azure Solutions Architect Expert Professional Google Cloud Architect Certified Kubernetes Administrator
- 3. Kustomize Kubernetes native configuration management Kustomize introduces a template-free way to customize application configuration that simplifies the use of off-the-shelf applications. Now, built into kubectl No templating, no domain-specific configuration languages Take over existing application manifests kubectl built-in Overlay pattern 🖥️Demo SIGCLI TheKustomizationFile Anoverviewofthecontentofakustomizationfile.
- 4. 🤔Why We Need Yet Another Conguration Tool? Helm Helm helps you manage Kubernetes applications — Helm Charts are easy to create, version, share, and publish. helmrepoaddargohttps://argoproj.github.io/argo-helm helminstallargocdargo/argo-cd Helm Template Language However, Helm template could be ugly…because of the templating. Conflict with other tools, e.g. Argo Workflows Kpt Automates Kubernetes configuration editing. Kpt package: A bundle of configuration data. It is represented as a directory tree containing Kubernetes resource manifests. Kpt function: Containerized program that can perform CRUD operations on KRM resources stored on the local filesystem. Any general-purpose or domain-specific language can be used to create functions to transform and/or validate the Kubernetes resource manifest input/output format. kptpkggethttps://github.com/GoogleContainerTools/kpt.git/package-examples/wordpress@v0.9 #wordpress/Kptfile apiVersion:kpt.dev/v1 kind:Kptfile metadata: name:wordpress pipeline: mutators: -image:gcr.io/kpt-fn/set-labels:v0.1 configMap: app:wordpress validators: -image:gcr.io/kpt-fn/kubeval:v0.1 $kptfnrenderwordpress $kptliveinitwordpress $kptliveapplywordpress--reconcile-timeout=2m
- 6. Challenges Upstream Incompatible Change GitHub ConfigMapGeneratorshouldnotloadvaluesfromthebuild… Itrecently cameto@natasha41575and my attentionthatthe configMapGenerator hasabugwhereitwillload valuesfromtheenvironme… Pull Request Review is Hard
- 7. Thank You