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<h1>Nextcloud 13 Administration Manual</h1>
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<li><a href="../contents.html">Table of Contents</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../index.html">Introduction</a></li>
<li class="toctree-l1"><a class="reference internal" href="../release_notes.html">Release notes</a></li>
<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation</a></li>
<li class="toctree-l1"><a class="reference internal" href="../configuration_server/index.html">Server configuration</a></li>
<li class="toctree-l1"><a class="reference internal" href="../configuration_user/index.html">User management</a></li>
<li class="toctree-l1"><a class="reference internal" href="../configuration_files/index.html">File sharing and management</a></li>
<li class="toctree-l1"><a class="reference internal" href="../file_workflows/index.html">File workflows</a></li>
<li class="toctree-l1"><a class="reference internal" href="../configuration_database/index.html">Database configuration</a></li>
<li class="toctree-l1"><a class="reference internal" href="../configuration_mimetypes/index.html">Mimetypes management</a></li>
<li class="toctree-l1 current"><a class="reference internal" href="index.html">Maintenance</a><ul class="current">
<li class="toctree-l2"><a class="reference internal" href="backup.html">Backup</a></li>
<li class="toctree-l2"><a class="reference internal" href="restore.html">Restoring backup</a></li>
<li class="toctree-l2 current"><a class="current reference internal" href="">How to upgrade</a><ul>
<li class="toctree-l3"><a class="reference internal" href="#update-notifications">Update notifications</a></li>
<li class="toctree-l3"><a class="reference internal" href="#prerequisites">Prerequisites</a></li>
<li class="toctree-l3"><a class="reference internal" href="#maintenance-mode">Maintenance mode</a></li>
<li class="toctree-l3"><a class="reference internal" href="#manual-steps-during-upgrade">Manual steps during upgrade</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="update.html">Upgrade via built-in updater</a></li>
<li class="toctree-l2"><a class="reference internal" href="manual_upgrade.html">Upgrade manually</a></li>
<li class="toctree-l2"><a class="reference internal" href="package_upgrade.html">Upgrade via packages</a></li>
<li class="toctree-l2"><a class="reference internal" href="migrating.html">Migrating to a different server</a></li>
<li class="toctree-l2"><a class="reference internal" href="migrating_owncloud.html">Migrating from ownCloud</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../issues/index.html">Issues and troubleshooting</a></li>
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<a href="update.html" title="Next Chapter: Upgrade via built-in updater"><span class="glyphicon glyphicon-chevron-right visible-sm"></span><span class="hidden-sm">Upgrade via built-in updater »</span>
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<div class="section" id="how-to-upgrade">
<h1>How to upgrade<a class="headerlink" href="#how-to-upgrade" title="Permalink to this headline">¶</a></h1>
<p>There are three ways to upgrade your Nextcloud server:</p>
<ul class="simple">
<li>With the <a class="reference internal" href="update.html"><em>Updater App</em></a>.</li>
<li><a class="reference internal" href="manual_upgrade.html"><em>Manually upgrading</em></a> with the Nextcloud <code class="docutils literal"><span class="pre">.tar</span></code> archive
from our <a class="reference external" href="https://nextcloud.com/install/">Download page</a>.</li>
<li><a class="reference internal" href="package_upgrade.html"><em>Upgrading</em></a> via the snap packages.</li>
<li>Manually upgrading is also an option for users on shared hosting; download
and unpack the Nextcloud tarball to your PC. Delete your existing Nextcloud
files, except <code class="docutils literal"><span class="pre">data/</span></code> and <code class="docutils literal"><span class="pre">config/</span></code> files, on your hosting account. Then
transfer the new Nextcloud files to your hosting account, again
preserving your existing <code class="docutils literal"><span class="pre">data/</span></code> and <code class="docutils literal"><span class="pre">config/</span></code> files.</li>
</ul>
<p>When an update is available for your Nextcloud server, you will see a
notification at the top of your Nextcloud Web interface. When you click the
notification it brings you here, to this page.</p>
<p><strong>It is best to keep your Nextcloud server upgraded regularly</strong>, and to install
all point releases and major releases without skipping any of them, as skipping
releases increases the risk of errors. Major releases are 9, 10, and
11. Point releases are intermediate releases for each major release. For
example, 9.0.52 and 10.0.2 are point releases. <strong>Skipping major releases is not
supported.</strong></p>
<p><strong>Upgrading is disruptive</strong>. Your Nextcloud server will be put into maintenance
mode, so your users will be locked out until the upgrade is completed. Large
installations may take several hours to complete the upgrade.</p>
<div class="admonition warning">
<p class="first admonition-title">Warning</p>
<p class="last"><strong>Downgrading is not supported</strong> and risks corrupting your data! If
you want to revert to an older Nextcloud version, make a new, fresh
installation and then restore your data from backup. Before doing this,
file a support ticket (if you have paid support) or ask for help in the
Nextcloud forums to see if your issue can be resolved without downgrading.</p>
</div>
<div class="section" id="update-notifications">
<h2>Update notifications<a class="headerlink" href="#update-notifications" title="Permalink to this headline">¶</a></h2>
<p>Nextcloud has an update notification app, that informs the administrator about
the availability of an update. Then you decide which update method to use.</p>
<div class="figure" id="id1">
<img alt="Both update notifications displayed on Admin page." src="../_images/2-updates.png" />
<p class="caption"><span class="caption-text"><em>Figure 1: The top banner is the update notification that is shown on every
page, and the Updates section can be found in the admin page</em></span></p>
</div>
<p>From there the web based updater can be used to fetch this new code. There is
also an CLI based updater available, that does exactly the same as the web
based updater but on the command line.</p>
</div>
<div class="section" id="prerequisites">
<h2>Prerequisites<a class="headerlink" href="#prerequisites" title="Permalink to this headline">¶</a></h2>
<p>You should always maintain <a class="reference internal" href="backup.html"><em>regular backups</em></a> and make a fresh
backup before every upgrade.</p>
<p>Then review third-party apps, if you have any, for compatibility with the new
Nextcloud release. Any apps that are not developed by Nextcloud show a 3rd party
designation. <strong>Install unsupported apps at your own risk</strong>. Then, before the
upgrade, all 3rd party apps must be disabled. After the upgrade is complete you
may re-enable them.</p>
</div>
<div class="section" id="maintenance-mode">
<h2>Maintenance mode<a class="headerlink" href="#maintenance-mode" title="Permalink to this headline">¶</a></h2>
<p>You can put your Nextcloud server into maintenance mode before performing
upgrades, or for performing troubleshooting or maintenance. Please see
<a class="reference internal" href="../configuration_server/occ_command.html"><em>Using the occ command</em></a> to learn how to put your server into
the maintenance mode (<code class="docutils literal"><span class="pre">maintenance:mode</span></code>) or execute repair commands
(<code class="docutils literal"><span class="pre">maintenance:repair</span></code>) with the <code class="docutils literal"><span class="pre">occ</span></code> command.</p>
<p>The <a class="reference internal" href="update.html"><em>build-in Updater</em></a> does this for you before replacing the
existing Nextcloud code with the code of the new Nextcloud version.</p>
<p><code class="docutils literal"><span class="pre">maintenance:mode</span></code> locks the sessions of logged-in users and prevents new
logins. This is the mode to use for upgrades. You must run <code class="docutils literal"><span class="pre">occ</span></code> as the HTTP
user, like this example on Ubuntu Linux:</p>
<div class="highlight-python"><div class="highlight"><pre>$ sudo -u www-data php occ maintenance:mode --on
</pre></div>
</div>
<p>You may also put your server into this mode by editing <code class="file docutils literal"><span class="pre">config/config.php</span></code>.
Change <code class="docutils literal"><span class="pre">"maintenance"</span> <span class="pre">=></span> <span class="pre">false</span></code> to <code class="docutils literal"><span class="pre">"maintenance"</span> <span class="pre">=></span> <span class="pre">true</span></code>:</p>
<div class="highlight-python"><div class="highlight"><pre><?php
"maintenance" => true,
</pre></div>
</div>
<p>Then change it back to <code class="docutils literal"><span class="pre">false</span></code> when you are finished.</p>
</div>
<div class="section" id="manual-steps-during-upgrade">
<h2>Manual steps during upgrade<a class="headerlink" href="#manual-steps-during-upgrade" title="Permalink to this headline">¶</a></h2>
<p>Some operation can be quite time consuming. Therefore we decided not to add them
the the normal upgrade process. We recommend to run them manually after the upgrade
was completed. Below you find a list of this commands.</p>
<div class="section" id="upgrading-to-nextcloud-13">
<h3>Upgrading to Nextcloud 13<a class="headerlink" href="#upgrading-to-nextcloud-13" title="Permalink to this headline">¶</a></h3>
<p>With Nextcloud 13 we added a new index to the share table which should result in
significant performance improvements:</p>
<div class="highlight-python"><div class="highlight"><pre>$ sudo -u www-data php occ db:add-missing-indice
</pre></div>
</div>
<p>With Nextcloud 13 we switched to bigint for the file ID’s in the file cache table:</p>
<div class="highlight-python"><div class="highlight"><pre>$ sudo -u www-data php occ db:convert-filecache-bigint
</pre></div>
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