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<h1>Nextcloud 13 Administration Manual</h1>
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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 current"><a class="current reference internal" href="">Restoring backup</a><ul>
<li class="toctree-l3"><a class="reference internal" href="#restore-folders">Restore folders</a></li>
<li class="toctree-l3"><a class="reference internal" href="#restore-database">Restore database</a></li>
<li class="toctree-l3"><a class="reference internal" href="#restoring">Restoring</a></li>
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<div class="section" id="restoring-backup">
<h1>Restoring backup<a class="headerlink" href="#restoring-backup" title="Permalink to this headline">¶</a></h1>
<p>To restore a Nextcloud installation there are four main things you need to
restore:</p>
<ol class="arabic simple">
<li>The configuration directory</li>
<li>The data directory</li>
<li>The database</li>
<li>The theme directory</li>
</ol>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">You must have both the database and data directory. You cannot
complete restoration unless you have both of these.</p>
</div>
<p>When you have completed your restoration, see the <code class="docutils literal"><span class="pre">Setting</span> <span class="pre">Strong</span> <span class="pre">Directory</span>
<span class="pre">Permissions</span></code> section of <a class="reference internal" href="../installation/installation_wizard.html"><em>Installation wizard</em></a>.</p>
<p>Also make sure to run the <a class="reference internal" href="../configuration_server/occ_command.html#maintenance-commands-label"><span>maintenance:data-fingerprint</span></a> command
afterwards, to ensure your sync clients can recover from the restored backup.</p>
<div class="section" id="restore-folders">
<h2>Restore folders<a class="headerlink" href="#restore-folders" title="Permalink to this headline">¶</a></h2>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">This guide assumes that your previous backup is called
“nextcloud-dirbkp”</p>
</div>
<p>Simply copy your configuration and data folder (or even your whole Nextcloud
install and data folder) to your Nextcloud environment. You could use this command:</p>
<div class="highlight-python"><div class="highlight"><pre>rsync -Aax nextcloud-dirbkp/ nextcloud/
</pre></div>
</div>
</div>
<div class="section" id="restore-database">
<h2>Restore database<a class="headerlink" href="#restore-database" title="Permalink to this headline">¶</a></h2>
<div class="admonition warning">
<p class="first admonition-title">Warning</p>
<p class="last">Before restoring a backup you need to make sure to delete all existing database tables.</p>
</div>
<p>The easiest way to do this is to drop and recreate the database.
SQLite does this automatically.</p>
<div class="section" id="mysql">
<h3>MySQL<a class="headerlink" href="#mysql" title="Permalink to this headline">¶</a></h3>
<p>MySQL is the recommended database engine. To restore MySQL:</p>
<div class="highlight-python"><div class="highlight"><pre>mysql -h [server] -u [username] -p[password] -e "DROP DATABASE nextcloud"
mysql -h [server] -u [username] -p[password] -e "CREATE DATABASE nextcloud"
</pre></div>
</div>
<p>If you use UTF8 with multibyte support (e.g. for emoijs in filenames), use:</p>
<div class="highlight-python"><div class="highlight"><pre>mysql -h [server] -u [username] -p[password] -e "DROP DATABASE nextcloud"
mysql -h [server] -u [username] -p[password] -e "CREATE DATABASE nextcloud CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci"
</pre></div>
</div>
</div>
<div class="section" id="postgresql">
<h3>PostgreSQL<a class="headerlink" href="#postgresql" title="Permalink to this headline">¶</a></h3>
<div class="highlight-python"><div class="highlight"><pre>PGPASSWORD="password" psql -h [server] -U [username] -d nextcloud -c "DROP DATABASE \"nextcloud\";"
PGPASSWORD="password" psql -h [server] -U [username] -d nextcloud -c "CREATE DATABASE \"nextcloud\";"
</pre></div>
</div>
</div>
</div>
<div class="section" id="restoring">
<h2>Restoring<a class="headerlink" href="#restoring" title="Permalink to this headline">¶</a></h2>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">This guide assumes that your previous backup is called
“nextcloud-sqlbkp.bak”</p>
</div>
<div class="section" id="id1">
<h3>MySQL<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h3>
<p>MySQL is the recommended database engine. To restore MySQL:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="n">mysql</span> <span class="o">-</span><span class="n">h</span> <span class="p">[</span><span class="n">server</span><span class="p">]</span> <span class="o">-</span><span class="n">u</span> <span class="p">[</span><span class="n">username</span><span class="p">]</span> <span class="o">-</span><span class="n">p</span><span class="p">[</span><span class="n">password</span><span class="p">]</span> <span class="p">[</span><span class="n">db_name</span><span class="p">]</span> <span class="o"><</span> <span class="n">nextcloud</span><span class="o">-</span><span class="n">sqlbkp</span><span class="o">.</span><span class="n">bak</span>
</pre></div>
</div>
</div>
<div class="section" id="sqlite">
<h3>SQLite<a class="headerlink" href="#sqlite" title="Permalink to this headline">¶</a></h3>
<div class="highlight-python"><div class="highlight"><pre>rm data/owncloud.db
sqlite3 data/owncloud.db < nextcloud-sqlbkp.bak
</pre></div>
</div>
</div>
<div class="section" id="id2">
<h3>PostgreSQL<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h3>
<div class="highlight-python"><div class="highlight"><pre>PGPASSWORD="password" pg_restore -c -d nextcloud -h [server] -U [username]
nextcloud-sqlbkp.bak
</pre></div>
</div>
</div>
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