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+<h1>docker swarm unlock-key</h1>  <p><br></p> <p>Manage the unlock key</p> <p><span class="badge badge-info" data-toggle="tooltip" data-placement="right" title="This command works with the Swarm orchestrator.">Swarm</span> This command works with the Swarm orchestrator.</p> <h2 id="usage">Usage</h2> <div class="highlight"><pre class="highlight" data-language="">$ docker swarm unlock-key [OPTIONS]
+</pre></div> <p>Refer to the <a href="#options">options section</a> for an overview of available <a href="#options"><code class="language-plaintext highlighter-rouge">OPTIONS</code></a> for this command.</p> <h2 id="description">Description</h2> <p name="extended-description">An unlock key is a secret key needed to unlock a manager after its Docker daemon restarts. These keys are only used when the autolock feature is enabled for the swarm.</p> <p>You can view or rotate the unlock key using <code class="language-plaintext highlighter-rouge">swarm unlock-key</code>. To view the key, run the <code class="language-plaintext highlighter-rouge">docker swarm unlock-key</code> command without any arguments:</p> <blockquote> <p><strong>Note</strong></p> <p>This is a cluster management command, and must be executed on a swarm manager node. To learn about managers and workers, refer to the <a href="../../../swarm/index">Swarm mode section</a> in the documentation.</p> </blockquote> <p>For example uses of this command, refer to the <a href="#examples">examples section</a> below.</p> <h2 id="options">Options</h2> <table> <thead> <tr> <td>Name, shorthand</td> <td>Default</td> <td>Description</td> </tr> </thead> <tbody> <tr> <td>
+<code class="language-plaintext highlighter-rouge">--quiet</code> , <code class="language-plaintext highlighter-rouge">-q</code>
+</td> <td></td> <td>Only display token</td> </tr> <tr> <td><code class="language-plaintext highlighter-rouge">--rotate</code></td> <td></td> <td>Rotate unlock key</td> </tr>  </tbody> </table>  <h2 id="examples">Examples</h2> <div class="highlight"><pre class="highlight" data-language="">$ docker swarm unlock-key
+
+To unlock a swarm manager after it restarts, run the `docker swarm unlock`
+command and provide the following key:
+
+    SWMKEY-1-fySn8TY4w5lKcWcJPIpKufejh9hxx5KYwx6XZigx3Q4
+
+Please remember to store this key in a password manager, since without it you
+will not be able to restart the manager.
+</pre></div> <p>Use the <code class="language-plaintext highlighter-rouge">--rotate</code> flag to rotate the unlock key to a new, randomly-generated key:</p> <div class="highlight"><pre class="highlight" data-language="">$ docker swarm unlock-key --rotate
+
+Successfully rotated manager unlock key.
+
+To unlock a swarm manager after it restarts, run the `docker swarm unlock`
+command and provide the following key:
+
+    SWMKEY-1-7c37Cc8654o6p38HnroywCi19pllOnGtbdZEgtKxZu8
+
+Please remember to store this key in a password manager, since without it you
+will not be able to restart the manager.
+</pre></div> <p>The <code class="language-plaintext highlighter-rouge">-q</code> (or <code class="language-plaintext highlighter-rouge">--quiet</code>) flag only prints the key:</p> <div class="highlight"><pre class="highlight" data-language="">$ docker swarm unlock-key -q
+
+SWMKEY-1-7c37Cc8654o6p38HnroywCi19pllOnGtbdZEgtKxZu8
+</pre></div> <h3 id="--rotate"><code class="language-plaintext highlighter-rouge">--rotate</code></h3> <p>This flag rotates the unlock key, replacing it with a new randomly-generated key. The old unlock key will no longer be accepted.</p> <h3 id="--quiet"><code class="language-plaintext highlighter-rouge">--quiet</code></h3> <p>Only print the unlock key, without instructions.</p> <h2 id="parent-command">Parent command</h2> <table> <thead> <tr> <th style="text-align: left">Command</th> <th style="text-align: left">Description</th> </tr> </thead> <tbody> <tr> <td style="text-align: left"><a href="../swarm/index">docker swarm</a></td> <td style="text-align: left">Manage Swarm</td> </tr> </tbody> </table> <h2 id="related-commands">Related commands</h2> <table> <thead> <tr> <td>Command</td> <td>Description</td> </tr> </thead> <tbody> <tr> <td><a href="../swarm_ca/index">docker swarm ca</a></td> <td>Display and rotate the root CA</td> </tr> <tr> <td><a href="../swarm_init/index">docker swarm init</a></td> <td>Initialize a swarm</td> </tr> <tr> <td><a href="../swarm_join/index">docker swarm join</a></td> <td>Join a swarm as a node and/or manager</td> </tr> <tr> <td><a href="../swarm_join-token/index">docker swarm join-token</a></td> <td>Manage join tokens</td> </tr> <tr> <td><a href="../swarm_leave/index">docker swarm leave</a></td> <td>Leave the swarm</td> </tr> <tr> <td><a href="../swarm_unlock/index">docker swarm unlock</a></td> <td>Unlock swarm</td> </tr> <tr> <td><a href="index">docker swarm unlock-key</a></td> <td>Manage the unlock key</td> </tr> <tr> <td><a href="../swarm_update/index">docker swarm update</a></td> <td>Update the swarm</td> </tr> </tbody> </table> <div class="_attribution">
+  <p class="_attribution-p">
+    &copy; 2019 Docker, Inc.<br>Licensed under the Apache License, Version 2.0.<br>Docker and the Docker logo are trademarks or registered trademarks of Docker, Inc. in the United States and/or other countries.<br>Docker, Inc. and other parties may also have trademark rights in other terms used herein.<br>
+    <a href="https://docs.docker.com/engine/reference/commandline/swarm_unlock-key/" class="_attribution-link">https://docs.docker.com/engine/reference/commandline/swarm_unlock-key/</a>
+  </p>
+</div>