This error occurs when trying to create a Kubernetes resource of a type that is not available or registered in the API server, typically due to missing CRD or unsupported API version.
Fixes Kind not registered
# Kind not registeredKind not registered
The "Kind not registered" error indicates that the resource type (Kind) you're trying to create doesn't exist or isn't available.
kubectl apply -f resource.yaml
kubectl api-resources
kubectl apply -f crds.yaml
cat resource.yaml | grep apiVersion && kubectl api-versions | grep <group>
kubectl get pods --all-namespaces | grep -i operator
Common API migrations: extensions/v1beta1 → apps/v1, apps/v1beta1 → apps/v1.