### Auth

 - The RBAC v1alpha1 API group is deprecated in favor of RBAC v1.

 - The API server flag `--experimental-bootstrap-token-auth` is deprecated in favor of `--enable-bootstrap-token-auth`. The `--experimental-bootstrap-token-auth` flag will be removed in version 1.9.

### Autoscaling

 - Consuming metrics directly from Heapster is deprecated in favor of

  * All communication is now over TLS
  * Authorization plugins can be installed by kubeadm, including the new default of RBAC
  * The bootstrap token system now allows token management and expiration
* The [`kubefed` federation bootstrap tool](https://kubernetes.io/docs/tutorials/federation/set-up-cluster-federation-kubefed/) has also graduated to beta.

`kubeadm join` is now blocking on the kubelet performing the TLS Bootstrap properly. Earlier, `kubeadm join` only did the discovery part and exited successfully without checking that the kubelet actually started properly and performed the TLS bootstrap correctly. Now, as kubeadm runs some post-join steps (for example, annotating the Node API object with the CRISocket), `kubeadm join` is now waiting for the kubelet to perform the TLS Bootstrap, and then uses that credential to perform further actions. This...

- client-go releases will no longer have bootstrap (k8s.io/client-go/tools/bootstrap) related code. Any reference to it will break. Please redirect all references to k8s.io/bootstrap instead. ([#67356](https://github.com/kubernetes/kubernetes/pull/67356), [@yliaog](https://github.com/yliaog))

* When a kubelet is using --bootstrap-kubeconfig and certificate rotation, it no longer waits for bootstrap to succeed before launching static pods. ([#71174](https://github.com/kubernetes/kubernetes/pull/71174), [@smarterclayton](https://github.com/smarterclayton))

- kubeadm now deletes the bootstrap-kubelet.conf file after TLS bootstrap
  User relying on bootstrap-kubelet.conf should switch to kubelet.conf that contains node credentials ([#80676](https://github.com/kubernetes/kubernetes/pull/80676), [@fabriziopandini](https://github.com/fabriziopandini))

* Fix a typo in prometheus-to-sd configuration, that drops some stackdriver metrics. ([#56473](https://github.com/kubernetes/kubernetes/pull/56473), [@loburm](https://github.com/loburm))
* Update jquery and bootstrap dependencies ([#56447](https://github.com/kubernetes/kubernetes/pull/56447), [@dashpole](https://github.com/dashpole))



# v1.7.11

* Renamed the API server flag `--experimental-bootstrap-token-auth` to `--enable-bootstrap-token-auth`. The old value is accepted with a warning in 1.8 and will be removed in 1.9. ([#51198](https://github.com/kubernetes/kubernetes/pull/51198), [@mattmoyer](https://github.com/mattmoyer))

- `cluster-bootstrap`: improved the security of the functions responsible for generation and validation of bootstrap tokens. ([#120400](https://github.com/kubernetes/kubernetes/pull/120400), [@neolit123](https://github.com/neolit123))

- Fixes a panic in kube-controller-manager cleaning up bootstrap tokens ([#82887](https://github.com/kubernetes/kubernetes/pull/82887), [@tedyu](https://github.com/tedyu))