- When using IPV6-only, be sure to use `proxy-mode=iptables` as `proxy-mode=ipvs` is known to not work. ([#68437](https://github.com/kubernetes/kubernetes/issues/68437))

## Deprecations

### Etcd v3.5.[0-2] data corruption

- Fixed an issue where the `vsphere` cloud provider would not trust a certificate if:
  - The issuer of the certificate was unknown (`x509.UnknownAuthorityError`)
  - The requested name did not match the set of authorized names (`x509.HostnameError`)

    - [Cloud Controller Manager now exclusively shipped by Cloud Provider](#cloud-controller-manager-now-exclusively-shipped-by-cloud-provider)
  - [Known Issues](#known-issues)
    - [Summary API in kubelet doesn't have accelerator metrics](#summary-api-in-kubelet-doesnt-have-accelerator-metrics)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)

> - Start SHA: 91e7b4fd31fcd3d5f436da26c980becec37ceefe
> - End Sha: 337e0e18f1aefa199bd0a1786f8eab42e948064c

## Known Issues

  This issue only could happen if you use custom plugins or if you change plugin set being used in your scheduler via the scheduler config. ([#122013](https:/...

- Fixes an issue where the vsphere cloud provider will not trust a certificate if:
  - The issuer of the certificate is unknown (x509.UnknownAuthorityError)
  - The requested name does not match the set of authorized names (x509.HostnameError)

kubernetes/kubeadm: [#1204](https://github.com/kubernetes/kubeadm/issues/1204)
kubernetes/enhancements: [kep](https://github.com/kubernetes/enhancements/blob/master/keps/sig-cluster-lifecycle/kubeadm/2501-kubeadm-phases-to-beta/README.md)

## Known Issues

This release also includes [Topology Aware Volume Scheduling](https://github.com/kubernetes/enhancements/issues/490) for local persistent volumes, the stable release of [Detailed storage metrics of internal state](https://github.com/kubernetes/enhancements/issues/496), and beta support for [Out-of-tree CSI Volume Plugins](https://github.com/kubernetes/enhancements/issues/178).

## Known Issues

This section contains a list of known issues reported in Kubernetes 1.8 release. The content is populated via [v1.8.x known issues and FAQ accumulator](https://github.com/kubernetes/kubernetes/issues/53004).