optional LifecycleHandler postStart = 1;

  // PreStop is called immediately before a container is terminated due to an
  // API request or management event such as liveness/startup probe failure,
  // preemption, resource contention, etc. The handler is not called if the
  // container crashes or exits. The Pod's termination grace period countdown begins before the
  // PreStop hook is executed. Regardless of the outcome of the handler, the

- A new sleep action for the `PreStop` lifecycle hook was added, allowing containers to pause for a specified duration before termination. ([#119026](https://github.com/kubernetes/kubernetes/pull/119026), [@AxeZhan](https://github.com/AxeZhan))

- Fixed restricted debug profile. ([#117543](https://github.com/kubernetes/kubernetes/pull/117543), [@mochizuki875](https://github.com/mochizuki875))
- Fixed the `preStop` hook. This will now block the pod termination grace period. ([#115835](https://github.com/kubernetes/kubernetes/pull/115835), [@HirazawaUi](https://github.com/HirazawaUi))

  level, or following any other model you implement.' ([#111023](https://github.com/kubernetes/kubernetes/pull/111023), [@pohly](https://github.com/pohly))
- 'Container `preStop` and `postStart` lifecycle handlers using `httpGet` now
  honor the specified `scheme` and `headers` fields. This enables setting custom
  headers and changing the scheme to `HTTPS`, consistent with container