An API version identifies a particular compatibility and behavior contract. Treating versions explicitly lets platform teams manage change without breaking existing deployments. section 9.3
A Kubernetes API version follows an incremental deprecation path:
- Promote an API from v1alpha1 to v1beta1, then mark v1alpha1 as deprecated in the next release. section 9.3
- Keep the deprecated version usable for two release cycles to provide backward compatibility. section 9.3
- Scan deployments after upgrades, identify outdated versions, and notify owning teams before removal causes failures. section 9.3
apiVersion: admissionregistration.k8s.io/v1alpha1 Kind: MutatingWebHook apiVersion: apps/v1 Kind: Deployment
Compare version declarations for admission registration and deployment APIs. section 9.3




