// Last time the condition transitioned from one status to another.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.Time lastTransitionTime = 4;

  // Unique, one-word, CamelCase reason for the condition's last transition.
  // +optional
  optional string reason = 5;

  // Human-readable message indicating details about last transition.
  // +optional
  optional string message = 6;

([#69099](https://github.com/kubernetes/kubernetes/pull/69099), [@ehashman](https://github.com/ehashman))

## Deprecations

- kubectl

* fix azure pv crash due to volumeSource.ReadOnly value nil ([#54607](https://github.com/kubernetes/kubernetes/pull/54607), [@andyzhangx](https://github.com/andyzhangx))
* Fix an issue where pods were briefly transitioned to a "Pending" state during the deletion process. ([#54593](https://github.com/kubernetes/kubernetes/pull/54593), [@dashpole](https://github.com/dashpole))

  The `flowcontrol.apiserver.k8s.io/v1beta3` APIs are deprecated and will no longer be served in v1.32. All existing objects are available via the `v1` APIs. Transition clients and manifests to use the `v1` APIs before upgrading to `v1.32`. ([#121089](https://github.com/kubernetes/kubernetes/pull/121089), [@tkashem](https://github.com/tkashem))

#### Node controller
* Bug fixes:

  * Fix [transition between NotReady and Unreachable taints](https://github.com/kubernetes/kubernetes/issues/43444). ([#44042](https://github.com/kubernetes/kubernetes/pull/44042), [@gmarek](https://github.com/gmarek))


#### Node Components

* Fix an issue where pods were briefly transitioned to a "Pending" state during the deletion process. ([#54593](https://github.com/kubernetes/kubernetes/pull/54593), [@dashpole](https://github.com/dashpole))

* Fix [transition between NotReady and Unreachable taints](https://github.com/kubernetes/kubernetes/issues/43444). ([#44042](https://github.com/kubernetes/kubernetes/pull/44042), [@gmarek](https://github.com/gmarek))

objects created with non-empty `caBundle` fields which are invalid or do not contain any certificates will not appear in discovery or serve endpoints until a valid `caBundle` is provided. Updates to CustomResourceDefinition are no longer allowed to transition a valid `caBundle` field to an invalid `caBundle` field, because this breaks serving of the existing CustomResourceDefinition. ([#124061](https://github.com/kubernetes/kubernetes/pull/124061), [@Jefftree](https://github.com/Jefftree)) [SIG API Machinery]...

* The Kubelet's deprecated `--allow-privileged` flag now defaults to true. This enables users to stop setting `--allow-privileged` in order to transition to `PodSecurityPolicy`. Previously, users had to continue setting `--allow-privileged`, because the default was false. ([#63442](https://github.com/kubernetes/kubernetes/pull/63442), [@mtaufen](https://github.com/mtaufen))

- PersistentVolumes have a new `LastPhaseTransitionTime` field which holds a timestamp of when the volume last transitioned its phase. ([#116469](https://github.com/kubernetes/kubernetes/pull/116469), [@RomanBednar](https://github.com/RomanBednar))