dependencies.
</p>

<p>
The syntax is compact and simple to parse, allowing for easy analysis
by automatic tools such as integrated development environments.
</p>

<h2 id="Notation">Notation</h2>
<p>
The syntax is specified using a
<a href="https://en.wikipedia.org/wiki/Wirth_syntax_notation">variant</a>
of Extended Backus-Naur Form (EBNF):
</p>

<pre class="grammar">

* Fixed encryption key and encryption provider rotation ([#58375](https://github.com/kubernetes/kubernetes/pull/58375), [@liggitt](https://github.com/liggitt))

- Fixes an issue affecting log rotation with CRI runtimes where kubelet tries to compress Windows logs before closing file handles ([#112483](https://github.com/kubernetes/kubernetes/pull/112483), [@ibabou](https://github.com/ibabou)) [SIG Node and Windows]

* Kubelets using TLS bootstrapping (`--bootstrap-kubeconfig`) or certificate rotation (`--rotate-certificates`) store certificates in the directory specified by `--cert-dir`. The default location (`/var/run/kubernetes`) is automatically erased on reboot on some platforms, which can prevent the kubelet from authenticating to the API server after a reboot. Specifying a non-transient location, such as `--cert-dir=/var/lib/kubelet/pki`, is recommended.

* When using client or server certificate rotation, the Kubelet will no longer wait until the initial rotation succeeds or fails before starting static pods.  This makes running self-hosted masters with rotation more predictable. ([#58930](https://github.com/kubernetes/kubernetes/pull/58930), [@smarterclayton](https://github.com/smarterclayton))

The dynamic kubelet config feature graduated to beta, so it is enabled by default, simplifying management of the node object itself.  Kubelets that are configured to work with the CRI may take advantage of the log rotation feature, which is graduating to beta this release.

Prior to 1.17 and for existing nodes created by `kubeadm init` where kubelet client certificate rotation is desired, you must modify `/etc/kubernetes/kubelet.conf` to point to the PEM symlink for rotation:

### GCP

- Fixed liveness probe in fluentd-gcp cluster addon ([#74522](https://github.com/kubernetes/kubernetes/pull/74522), [@Pluies](https://github.com/Pluies))
- Reduced GCE log rotation check from 1 hour to every 5 minutes.  Rotation policy is unchanged (new day starts, log file size > 100MB). ([#72062](https://github.com/kubernetes/kubernetes/pull/72062), [@jpbetz](https://github.com/jpbetz))

### Network

- Changed core_pattern on COS nodes to be an absolute path. ([#86329](https://github.com/kubernetes/kubernetes/pull/86329), [@mml](https://github.com/mml)) [SIG Cluster Lifecycle and Node]
- Client-go certificate manager rotation gained the ability to preserve optional intermediate chains accompanying issued certificates ([#88744](https://github.com/kubernetes/kubernetes/pull/88744), [@jackkleeman](https://github.com/jackkleeman)) [SIG API Machinery and Auth]

- Reduced GCE log rotation check from 1 hour to every 5 minutes.  Rotation policy is unchanged (new day starts, log file size > 100MB). ([#76352](https://github.com/kubernetes/kubernetes/pull/76352), [@jpbetz](https://github.com/jpbetz))