// Defaults to true.
  // +optional
  optional bool stdout = 2;

  // Stderr if true indicates that stderr is to be redirected for the attach call.
  // Defaults to true.
  // +optional
  optional bool stderr = 3;

  // TTY if true indicates that a tty will be allocated for the attach call.
  // This is passed through the container runtime so the tty

- LimitRange and Endpoints resources can be created via an update API call if the object does not already exist. When this occurs, an authorization check is now made to ensure the user making the API call is authorized to create the object. In previous releases, only an update authorization check was performed. ([#65150](https://github.com/kubernetes/kubernetes/pull/65150), [@jennybuc...

LIST calls into multiple smaller chunks. A client can specify a limit to the number of results to return. If more results exist, a token is returned that allows the client to continue the previous list call repeatedly until all results are retrieved.  The resulting list is identical to a list call that does not perform chunking, thanks to capabilities provided by etcd3.  This allows the server to use less memory and CPU when very large lists are returned. This feature is gated as APIListChunking...

- kube-apiserver: the `--runtime-config` flag now supports an `api/beta=false` value which disables all built-in REST API versions matching `v[0-9]+beta[0-9]+`. ([#84304](https://github.com/kubernetes/kubernetes/pull/84304), [@liggitt](https://github.com/liggitt))

* etcd2: watching from 0 returns all initial states as ADDED events ([#38079](https://github.com/kubernetes/kubernetes/pull/38079), [@hon...

## Changelog since v1.18.0-alpha.2

### Deprecation

- Remove all the generators from kubectl run. It will now only create pods. Additionally, deprecates all the flags that are not relevant anymore. ([#87077](https://github.com/kubernetes/kubernetes/pull/87077), [@soltysh](https://github.com/soltysh)) [SIG Architecture, SIG CLI, and SIG Testing]

- Kubeadm: the limitation that the 'ignorePreflightErrors' field can not be set to 'all' in kubeadm config file has been removed ([#119351](https://github.com/kubernetes/kubernetes/pull/119351), [@SataQiu](https://github.com/SataQiu)) [SIG Cluster Lifecycle]

* `callbacks`: OpenAPI callbacks that apply to all the *path operations*.
* `deprecated`: to mark all the *path operations* as deprecated. 🤷
* `include_in_schema`: to allow excluding all the *path operations* from the OpenAPI schema.
* `responses`: OpenAPI responses that apply to all the *path operations*.

For example:

```Python
from fastapi import FastAPI, Depends

* Update the GCE windows node image to include hot fixes since July. ([#81233](https://github.com/kubernetes/kubernetes/pull/81233), [@YangLu1031](https://github.com/YangLu1031))
* switch to VM Update call in attach/detach disk operation, original CreateOrUpdate call may lead to orphaned VMs or blocked resources ([#81208](https://github.com/kubernetes/kubernetes/pull/81208), [@andyzhangx](https://github.com/andyzhangx))

- A new `DisableCompression` field (default = `false`) has been added to kubeconfig under cluster info. When set to `true`, clients using the kubeconfig opt out of response compression for all requests to the apiserver. This can help improve list call latencies significantly when client-server network bandwidth is ample (>30MB/s) or if the server is CPU-constrained. ([#112309](https://github.com/kubernetes/kubernetes/pull/112309), [@shyamjvs](https://github.com/shyamjvs))...