`kubeadm` applies a number of deprecations and removals of deprecated features in this release. More details are available in the Urgent Upgrade Notes and Kind / Deprecation sections.

### Pod Hostname as FQDN graduates to Beta

    - [Node Binaries](#node-binaries-19)
  - [Changelog since v1.17.0](#changelog-since-v1170)
  - [What’s New (Major Themes)](#whats-new-major-themes)
    - [Kubernetes Topology Manager Moves to Beta - Align Up!](#kubernetes-topology-manager-moves-to-beta---align-up)
    - [Serverside Apply - Beta 2](#serverside-apply---beta-2)

componentconfig (config file) API and the Kubelet's command line. Be sure to review the default values when migrating to using a config file. For example, the authz mode is set to "AlwaysAllow" if you rely on the command line, but defaults to the more secure "Webhook" mode if you load config from a file. ([#59666](https://github.com/kubernetes/kubernetes/pull/59666), [@mtaufen](https://github.com/mtaufen))

* [GCP kube-up.sh] Variables that were part of kube-env that were only used for...

- Kube-proxy's nftables mode (--proxy-mode=nftables) is now beta and available by default.
  
  FIXME ADD MORE HERE BEFORE THE RELEASE, DOCS LINKS AND STUFF ([#124383](https://github.com/kubernetes/kubernetes/pull/124383), [@danwinship](https://github.com/danwinship)) [SIG Cloud Provider and Network]

- Code blocks in `kubectl {$COMMAND}--help` will move right by 3 indentation. ([#118029](https://github.com/kubernetes/kubernetes/pull/118029), [@ardaguclu](https://github.com/ardaguclu))
- Compute the backoff delay more accurately for deleted pods ([#118413](https://github.com/kubernetes/kubernetes/pull/118413), [@mimowo](https://github.com/mimowo)) [SIG Apps]

- Systems running `iptables` 1.8.0 or newer should start it in legacy mode. Please note that this affects all versions of Kubernetes and not only v1.16.0. For more detailed information about the issue and how to apply a workaround, please refer to the official documentation

            logger.log(format("ECL0017", e.getMessage()), e);
        }
    }

    /**
     * Moves the result set to the next position.
     *
     * @param resultSet
     *            The result set. Must not be {@literal null}.
     * @return Whether the result set successfully moved to the next position.
     */
    public static boolean next(final ResultSet resultSet) {

- Types: ClusterEvent, ActionType, EventResource, ClusterEventWithHint, QueueingHint and QueueingHintFn moved from pkg/scheduler/framework to k8s.io/kube-scheduler/framework. ([#132190](https://github.com/kubernetes/kubernetes/pull/132190), [@ania-borowiec](https://github.com/ania-borowiec)) [SIG Node, Scheduling, Storage and Testing]
- Types: Code and Status moved from pkg/scheduler/framework to staging repo.

}\n}\n\n.dark-mode .breadcrumb-item.active,\n.dark-mode .breadcrumb-item + .breadcrumb-item::before {\n  color: #adb5bd;\n}\n\n.dark-mode .main-footer {\n  background-color: #343a40;\n  border-color: #4b545c;\n}\n\n.dark-mode .content-wrapper {\n  background-color: #454d55;\n  color: #fff;\n}\n\n.dark-mode .content-wrapper .content-header {\n  color: #fff;\n}\n\n.main-header {\n  border-bottom: 1px solid #dee2e6;\n  z-index: 1034;\n}\n\n.main-header .nav-link {\n  height: 2.5rem;\n  position: relative;\n}\n\n.text-sm...

specified while starting kube-proxy (‘userspace’ or ‘iptables’), the flag value
will be respected. If the flag value is not specified, the kube-proxy respects
the Node object annotation: ‘net.beta.kubernetes.io/proxy-mode’. If the
annotation is not specified, then ‘iptables’ mode is the default. If kube-proxy
is unable to start in iptables mode because system requirements are not met