- `kubeadm config upload` has been deprecated, as its replacement is now graduated. Please use `kubeadm init phase upload-config` instead. ([#77946](https://github.com/kubernetes/kubernetes/pull/77946), [@Klaven](https://github.com/Klaven))

- The following features are now GA, and the associated feature gates are deprecated and will be removed in v1.17:
  - `GCERegionalPersistentDisk`

## Metrics Changes

### Added metrics

- kubeadm: Always pass spec.nodeName as `--hostname-override` for kube-proxy ([#71283](https://github.com/kubernetes/kubernetes/pull/71283), [@Klaven](https://github.com/Klaven))
- `kubeadm join` correctly uses `--node-name` and `--cri-socket` when `--config` option is also used ([#71270](https://github.com/kubernetes/kubernetes/pull/71270), [@bart0sh](https://github.com/bart0sh))

* kube-apiserver flag --tls-ca-file has had no effect for some time.  It is now deprecated and slated for removal in 1.11.  If you are specifying this flag, you must remove it from your launch config before upgrading to 1.11. ([#58968](https://github.com/kubernetes/kubernetes/pull/58968), [@deads2k](https://github.com/deads2k))

- Fixes a race condition in the iptables mode of kube-proxy in 1.27 and later
  that could result in some updates getting lost (e.g., when a service gets a
  new endpoint, the rules for the new endpoint might not be added until
  much later). ([#122756](https://github.com/kubernetes/kubernetes/pull/122756), [@hakman](https://github.com/hakman)) [SIG Network]

### Bug or Regression

- Fixes a race condition in the iptables mode of kube-proxy in 1.27 and later
  that could result in some updates getting lost (e.g., when a service gets a
  new endpoint, the rules for the new endpoint might not be added until
  much later). ([#122757](https://github.com/kubernetes/kubernetes/pull/122757), [@hakman](https://github.com/hakman)) [SIG Network]

### Bug or Regression

- Fixes a race condition in the iptables mode of kube-proxy in 1.27 and later
  that could result in some updates getting lost (e.g., when a service gets a
  new endpoint, the rules for the new endpoint might not be added until
  much later). ([#122815](https://github.com/kubernetes/kubernetes/pull/122815), [@wedaly](https://github.com/wedaly)) [SIG Network]

- Sometimes, the scheduler incorrectly placed a pod in the "unschedulable" queue instead of the "backoff" queue. This happened when some plugin previously declared the pod as "unschedulable" and then in a later attempt encounters some other error. Scheduling of that pod then got delayed by up to five minutes, after which periodic flushing moved the pod back into the "active" queue. ([#120334](https://github.com/kubernetes/kubernetes/pull/120334), [@pohly...

  // Errors may occur at different points while syncing config. Earlier errors (e.g. download or
  // checkpointing errors) will not result in a rollback to LastKnownGood, and may resolve across
  // Kubelet retries. Later errors (e.g. loading or validating a checkpointed config) will result in
  // a rollback to LastKnownGood. In the latter case, it is usually possible to resolve the error
  // by fixing the config assigned in Spec.ConfigSource.

pkg archive/zip, type FileHeader struct, ModifiedTime //deprecated
pkg archive/zip, type FileHeader struct, UncompressedSize //deprecated
pkg compress/flate, type ReadError //deprecated
pkg compress/flate, type WriteError //deprecated
pkg crypto/rc4, method (*Cipher) Reset //deprecated
pkg crypto/tls, const VersionSSL30 //deprecated
pkg crypto/tls, method (*Config) BuildNameToCertificate //deprecated

 valuable credential. You can create a new Bootstrap Token with
 `kubeadm token create` or make the default token permanently valid by specifying
 `--token-ttl 0` to `kubeadm init`. The default token can later be deleted with
 `kubeadm token delete`.

 - `kubeadm join` now delegates TLS Bootstrapping to the kubelet itself, instead
 of reimplementing the process. `kubeadm join` writes the bootstrap kubeconfig