* Alpha annotation for PersistentVolume node affinity has been removed.  Update your PersistentVolumes to use the beta PersistentVolume.nodeAffinity field before upgrading to this release. ([#61816](https://github.com/kubernetes/kubernetes/pull/61816), [@wackxu
](https://github.com/wackxu))

#### Removed Deprecations

- Removed feature gate `SetHostnameAsFQDN`. ([#108038](https://github.com/kubernetes/kubernetes/pull/108038), [@mengjiao-liu](https://github.com/mengjiao-liu))
- Removed kube-scheduler insecure flags. You can use `--bind-address` and `--secure-port` instead. ([#106865](https://github.com/kubernetes/kubernetes/pull/106865), [@jonyhy96](https://github.com/jonyhy96))

* The following deprecated flags were removed from `kubelet`:

  * `api-servers` - add apiserver addresses to the kubeconfig file instead.

  Don't use these flags. Using deprecated flags causes the kubelet to print a warning. Using a removed flag causes the kubelet to abort the startup.

* Removed deprecated --require-kubeconfig flag, removed default --kubeconfig value (([#58367](https://github.com/kubernetes/kubernetes/pull/58367), [@zhangxiaoyu-zidif](https://github.com/zhangxiaoyu-zidif))

            }
        }

        if (!unhealthy.isEmpty()) {
            log.info("Removed {} unhealthy connections from pool", unhealthy.size());
        }

        // Perform maintenance tasks
        performMaintenanceTasks();
    }

    /**
     * Remove idle connections to free up pool space
     */
    private void removeIdleConnections() {

## **Deprecations**

### Cluster provisioning scripts
* cluster/ubuntu: Removed due to [deprecation](https://github.com/kubernetes/kubernetes/tree/master/cluster#cluster-configuration) and lack of maintenance. ([#44344](https://github.com/kubernetes/kubernetes/pull/44344), [@mikedanese](https://github.com/mikedanese))

### kubeadm
* Quite a few flags been renamed or removed.  Those options that are removed as flags can still be accessed via the config file.  Most notably this includes external etcd settings and the option for setting the cloud provider on the API server.  The [kubeadm reference documentation](https://kubernetes.io/docs/admin/kubeadm/) is up to date with the new flags.

### Other Deprecations

  - [Dependencies](#dependencies-16)
    - [Added](#added-16)
    - [Changed](#changed-16)
    - [Removed](#removed-16)
  - [Dependencies](#dependencies-17)
    - [Added](#added-17)
    - [Changed](#changed-17)
    - [Removed](#removed-17)
- [v1.19.0-rc.4](#v1190-rc4)
  - [Downloads for v1.19.0-rc.4](#downloads-for-v1190-rc4)
    - [Source Code](#source-code-17)

## Deprecations and removals

- Kubeadm: The Alpha feature-gates HighAvailability, SelfHosting, CertsInSecrets are now deprecated, and will be removed in k8s v1.13.0.
- The cloudstack and ovirt controllers have been deprecated and will be removed in a future version. ([#68199](https://github.com/kubernetes/kubernetes/pull/68199), [@dims](https://github.com/dims))

/**
 * The reason why a cached entry was removed.
 *
 * @author Charles Fry
 * @since 10.0
 */
@GwtCompatible
public enum RemovalCause {
  /**
   * The entry was manually removed by the user. This can result from the user invoking {@link
   * Cache#invalidate}, {@link Cache#invalidateAll(Iterable)}, {@link Cache#invalidateAll()}, {@link
   * Map#remove}, {@link ConcurrentMap#remove}, or {@link Iterator#remove}.
   */
  EXPLICIT {