* OpenStack-Heat will now look for an image named "CentOS-7-x86_64-GenericCloud-1604". To restore the previous behavior set OPENSTACK_IMAGE_NAME="CentOS7" ([#40368](https://github.com/kubernetes/kubernetes/pull/40368), [@sc68cal](https://github.com/sc68cal))

* hyperkube

  * The hyperkube image has been slimmed down and no longer includes addon manifests and other various scripts. These were introduced for the now removed docker-multinode setup system. ([#44555](https://github.com/kubernetes/kubernetes/pull/44555), [@luxas](https://github.com/luxas))

#### Lifecycle

- Support for deprecated old kubeadm v1alpha3 config has been totally removed. ([#75179](https://github.com/kubernetes/kubernetes/pull/75179), [@rosti](https://github.com/rosti))
- kube-up.sh no longer supports "centos" and "local" providers. ([#76711](https://github.com/kubernetes/kubernetes/pull/76711), [@dims](https://github.com/dims))

#### Network

* Fixes an issue pulling pod specs referencing unqualified images from docker.io on centos/fedora/rhel ([#53161](https://github.com/kubernetes/kubernetes/pull/53161), [@dims](https://github.com/dims))
* Update kube-dns to 1.14.5 ([#53153](https://github.com/kubernetes/kubernetes/pull/53153), [@bowei](https://github.com/bowei))

    * updating Service/Endpoints IPs in very large clusters on RHEL/CentOS 7.
* kubeadm: support any Linux kernel version newer than 3.10 ([#81623](https://github.com/kubernetes/kubernetes/pull/81623), [@neolit123](https://github.com/neolit123))