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Kubernetes · Resource

CustomResourceDefinition

A CustomResourceDefinition (CRD) adds a new resource type to the Kubernetes API. Kubernetes serves and stores objects of that type, and a custom controller can reconcile them into a declarative API.

Last updated

Since
v1.32 for selectable custom-resource fields

Syntax

apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
spec:
  group: <group>
  scope: Namespaced | Cluster
  names: { plural, singular, kind }
  versions: [{ name, served, storage, schema }]

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  • Custom resources
  • Custom controllers
  • API server aggregation
  • OpenAPI v3.0 validation schemas
  • Field selectors
  • Finalizers

Source: Custom Resources | Kubernetes. Checked 2026-11-03.