### kubeadm
* A new label and taint is used for marking the master. The label is `node-role.kubernetes.io/master=""` and the taint has the effect `NoSchedule`. Tolerate the `node-role.kubernetes.io/master="":NoSchedule` taint to schedule a workload on the master (a networking DaemonSet for example).
* The kubelet API is now secured, only cluster admins are allowed to access it.

- [v1.7.0-rc.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v170-rc1)
- [v1.7.0-beta.2](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v170-beta2)
- [v1.7.0-beta.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v170-beta1)
- [v1.7.0-alpha.4](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v170-alpha4)

- [v1.8.0-rc.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v180-rc1)
- [v1.8.0-beta.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v180-beta1)
- [v1.8.0-alpha.3](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v180-alpha3)
- [v1.8.0-alpha.2](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG.md#v180-alpha2)

- [CHANGELOG-1.2.md](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.2.md)
- [CHANGELOG-1.3.md](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.3.md)
- [CHANGELOG-1.4.md](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.4.md)
- [CHANGELOG-1.5.md](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.5.md)

- kubeadm: all master components are now exclusively relying on the `PriorityClassName` pod spec for annotating them as cluster critical components. Since `scheduler.alpha.kubernetes.io/critical-pod` annotation is no longer supported by Kubernetes 1.14 this annotation is no longer added to master components. ([#73857](https://github.com/kubernetes/kubernetes/pull/73857), [@ereslibre](https://github.com/ereslibre))...

* Kubelet will now set extended resource capacity to zero after it restarts. If the extended resource is exported by a device plugin, its capacity will change to a valid value after the device plugin re-connects with the Kubelet. If the extended resource is exported by an external component through direct node status capacity patching, the component should repatch the field after kubelet becomes ready again. During the time gap, pods previously assigned with such resources...

forwarded to kubelet static pods to control pull policy for etcd and control plane images. This option allows for precise image pull policy specification for master nodes and thus for more tight control over images. It is useful in CI environments and in environments, where the user has total control over master VM templates (thus, the master VM templates can be preloaded with the required Docker images for the control plane services). ([#58960](https://github.com/kubernetes/kubernetes/pull/58960),...

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  - Kubeadm:
  - The label applied to control-plane nodes "node-role.kubernetes.io/master" is now deprecated and will be removed in a future release after a GA deprecation period.
  - Introduce a new label "node-role.kubernetes.io/control-plane" that will be applied in parallel to "node-role.kubernetes.io/master" until the removal of the "node-role.kubernetes.io/master" label.

- E2e framework: the `node-role.kubernetes.io/master` taint has been removed from the default value of `--non-blocking-taints` flag. You may need to set `--non-blocking-taints` explicitly if the cluster to be tested has nodes with the deprecated `node-role.kubernetes.io/master` taint. ([#118510](https://github.com/kubernetes/kubernetes/pull/118510), [@SataQiu](https://github.com/SataQiu)) [SIG Testing]