license agreement, and (ii) are not derivative works of the Program. "Contributor" means any person or entity that distributes the Program. "Licensed Patents " mean patent claims licensable by a Contributor which are necessarily infringed by the use or sale of its Contribution alone or when combined with the Program. "Program" means the Contributions distributed in accordance with this Agreement. "Recipient" means anyone who receives the Program under this Agreement, including all Contributors. 2....

  // If true the pod's hostname will be configured as the pod's FQDN, rather than the leaf name (the default).
  // In Linux containers, this means setting the FQDN in the hostname field of the kernel (the nodename field of struct utsname).
  // In Windows containers, this means setting the registry value of hostname for the registry key HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters to FQDN.

rnetes/kubernetes/pull/44744), [@yguo0905](https://github.com/yguo0905))

  * Kubernetes now shares a single PID namespace among all containers in a pod when running with docker >= 1.13.1. This means processes can now signal processes in other containers in a pod, but it also means that the `kubectl exec {pod} kill 1` pattern will cause the Pod to be restarted rather than a single container. ([#45236](https://github.com/kubernetes/kubernetes/pull/45236), [@verb](https://github.com/verb))...

  The possibility of borrowing means that the old metric `apiserver_flowcontrol_request_concurrency_limit` can no longer mean both the configured concurrency limit and the enforced concurrency limit. Henceforth it means the configured concurrency limit.' ([#113485](https://github.com/kubernetes/kubernetes/pull/113485), [@MikeSpreitzer](https://github.com/MikeSpreitzer))

### **Multicluster**

*   Development of Kubernetes Federation has moved to [github.com/kubernetes/federation](https://github.com/kubernetes/federation). This move out of tree also means that Federation will begin releasing separately from Kubernetes. Impact:
    *   Federation-specific behavior will no longer be included in kubectl
    *   kubefed will no longer be released as part of Kubernetes

For more information, see [#53109](https://github.com/kubernetes/kubernetes/issues/53109).

## Deprecations

This section provides an overview of deprecated API versions, options, flags, and arguments. Deprecated means that we intend to remove the capability from a future release. After removal, the capability will no longer work. The sections are organized by SIGs.

### Apps

* **[Pod priority and preemption](https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/) is now enabled by default.** Note that this means that pods from *any* namespace can now request priority classes that compete with and/or cause preemption of critical system pods that are already running. If that is not desired, disable the PodPriority feature by setting `--feature-gates=PodPriority=false`...

- kubeadm has graduated `kubeadm alpha phase` commands to `kubeadm init phase`. This means that the phases of creating a control-plane node are now tightly integrated as part of the `init` command. Alpha features, not yet ready for GA are still kept under `kubeadm alpha` and we appreciate feedback on them.

- Introduce a feature gate `DisableCloudProviders` allowing to disable cloud-provider initialization in KAPI, KCM and kubelet.

- Volume dynamic provisioning scheduling has been moved to beta, which means that the DynamicProvisioningScheduling alpha feature gate has been removed but the VolumeScheduling beta feature gate is still required for this feature. ([#67432](https://github.com/kubernetes/kubernetes/pull/67432), [@lichuqiang](https://github.com/lichuqiang))...