* Remove genericapiserver.Options.MasterServiceNamespace ([#38186](https://github.com/kubernetes/kubernetes/pull/38186), [@sttts](https://github.com/sttts))
* genericapiserver: cut off more dependencies – episode 3 ([#40426](https://github.com/kubernetes/kubernetes/pull/40426), [@sttts](https://github.com/sttts))

- Always create configmaps/extensions-apiserver-authentication from kube-apiserver. ([#67694](https://github.com/kubernetes/kubernetes/pull/67694), [@sttts](https://github.com/sttts))

- CustomResourceDefinitions now validate documented API semantics of `x-kubernetes-list-type` and `x-kubernetes-map-type` atomic to reject non-atomic sub-types. ([#84722](https://github.com/kubernetes/kubernetes/pull/84722), [@sttts](https://github.com/sttts))

* Filter published OpenAPI schema by making nullable, required fields non-required in order to avoid kubectl to wrongly reject null values. ([#85722](https://github.com/kubernetes/kubernetes/pull/85722), [@sttts](https://github.com/sttts))
* Fixes an issue with kubelet-reported pod status on deleted/recreated pods. ([#86320](https://github.com/kubernetes/kubernetes/pull/86320), [@liggitt](https://github.com/liggitt))

* For x-kubernetes-list-type=set a scalar or atomic item type is now required, as documented. Persisted, invalid data is tolerated. ([#85385](https://github.com/kubernetes/kubernetes/pull/85385), [@sttts](https://github.com/sttts))

*   Fixed a bug where the `client-gen` tag for code-generator required a newline between a comment block and a statement.  tag shortcomings when newline is omitted ([#53893](https://github.com/kubernetes/kubernetes/pull/53893)) ([#55233](https://github.com/kubernetes/kubernetes/pull/55233),[ @sttts](https://github.com/sttts))

 
#### Configuration file changes:

#### kube-apiserver:

* Fixed API server panic during concurrent GET or LIST requests with non-empty `resourceVersion`. ([#65092](https://github.com/kubernetes/kubernetes/pull/65092), [@sttts](https://github.com/sttts))
* Fix issue that vSphere cloud provider cannot delete volume which is provisioned in datastore specified in storageclass ([#65550](https://github.com/kubernetes/kubernetes/pull/65550), [@w-leads](https://github.com/w-leads))

- Changed behavior of `kube-proxy` by allowing to set `sysctl` values lower than the existing one. ([#120448](https://github.com/kubernetes/kubernetes/pull/120448), [@aroradaman](https://github.com/aroradaman))
- Cleaned up `kube-apiserver` HTTP logs for impersonated requests. ([#119795](https://github.com/kubernetes/kubernetes/pull/119795), [@sttts](https://github.com/sttts))

* Make clear that meta.KindToResource is only a guess ([#45272](https://github.com/kubernetes/kubernetes/pull/45272), [@sttts](https://github.com/sttts))

* Add APIService conditions ([#43301](https://github.com/kubernetes/kubernetes/pull/43301), [@deads2k](https://github.com/deads2k))