- Secure serving on port 10258 to cloud-controller-manager (configurable via `--secure-port`) is now enabled. Delegated authentication and authorization are to be configured using the same flags as for aggregated API servers. Without configuration, the secure port will only allow access to `/healthz`. ([#67069](https://github.com/kubernetes/kubernetes/pull/67069), [@sttts](https...

* kubeadm: support sub-domain wildcards in certificate SANs ([#76920](https://github.com/kubernetes/kubernetes/pull/76920), [@sempr](https://github.com/sempr))
* Fixes an error with stuck informers when an etcd watch receives update or delete events with missing data ([#76675](https://github.com/kubernetes/kubernetes/pull/76675), [@ryanmcnamara](https://github.com/ryanmcnamara))

But requests with content type `text/plain` are exempt from [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) preflights, for being considered [Simple requests](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests). So, the browser would execute them right away including cookies, and the text content could be a JSON string that would be parsed and accepted by the FastAPI application.

#### kubectl:

<p>
Slice expressions construct a substring or slice from a string, array, pointer
to array, or slice. There are two variants: a simple form that specifies a low
and high bound, and a full form that also specifies a bound on the capacity.
</p>

<h4>Simple slice expressions</h4>

<p>
The primary expression
</p>

<pre>
a[low : high]
</pre>

<p>

CSI was first introduction as alpha in Kubernetes v1.9 and moved to beta in Kubernetes v1.10.

You can find a list of sample and production drivers in the [CSI Documentation](https://kubernetes.io/docs/concepts/storage/volumes/#csi).

* kubeadm: kubelets in kubeadm clusters now disable the readonly port (10255). If you're relying on unauthenticated access to the readonly port, please switch to using the secure port (10250). Instead, you can now use ServiceAccount tokens when talking to the secure port, which will make it easier to get access to, for example, the `/metrics` endpoint of the kubelet, securely. ([#64187](https://github.com/kubernetes/kubernetes/pull/64187), [@luxas](https://github.com/luxas))...

*   An example CRD controller has been added, at [github.com/kubernetes/sample-controller](https://github.com/kubernetes/sample-controller). ([#52753](https://github.com/kubernetes/kubernetes/pull/52753),[ @munnerz](https://github.com/munnerz))

- github.com/coreos/go-oidc: [065b426 → v2.1.0+incompatible](https://github.com/coreos/go-oidc/compare/065b426...v2.1.0)
- github.com/coreos/go-semver: [e214231 → v0.3.0](https://github.com/coreos/go-semver/compare/e214231...v0.3.0)
- github.com/cpuguy83/go-md2man: [v1.0.4 → v1.0.10](https://github.com/cpuguy83/go-md2man/compare/v1.0.4...v1.0.10)

cloud-controller-manager has been deprecated, and will be removed in a future release. Use `--secure-port` and `--bind-address` instead. ([#59582](https://github.com/kubernetes/kubernetes/pull/59582), [@sttts](https://github.com/sttts))

* The ability to use the insecure flags `--insecure-bind-address`, `--insecure-port` in the apiserver has been deprecated and will be removed in a future release. Use `--secure-port` and `--bind-address` instead. ([#59018](https://github.com/kubernetes/kubernetes/pull/59018),...