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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, also make sure to run the
<a class="reference internal" href="../configuration_server/occ_command.html#maintenance-commands-label"><span class="std std-ref">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-default notranslate"><div class="highlight"><pre><span></span><span class="n">rsync</span> <span class="o">-</span><span class="n">Aax</span> <span class="n">nextcloud</span><span class="o">-</span><span class="n">dirbkp</span><span class="o">/</span> <span class="n">nextcloud</span><span class="o">/</span>
</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-default notranslate"><div class="highlight"><pre><span></span><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="o">-</span><span class="n">e</span> <span class="s2">"DROP DATABASE nextcloud"</span>
<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="o">-</span><span class="n">e</span> <span class="s2">"CREATE DATABASE nextcloud"</span>
</pre></div>
</div>
<p>If you use UTF8 with multibyte support (e.g. for emoijs in filenames), use:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><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="o">-</span><span class="n">e</span> <span class="s2">"DROP DATABASE nextcloud"</span>
<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="o">-</span><span class="n">e</span> <span class="s2">"CREATE DATABASE nextcloud CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci"</span>
</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-default notranslate"><div class="highlight"><pre><span></span><span class="n">PGPASSWORD</span><span class="o">=</span><span class="s2">"password"</span> <span class="n">psql</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">d</span> <span class="n">template1</span> <span class="o">-</span><span class="n">c</span> <span class="s2">"DROP DATABASE </span><span class="se">\"</span><span class="s2">nextcloud</span><span class="se">\"</span><span class="s2">;"</span>
<span class="n">PGPASSWORD</span><span class="o">=</span><span class="s2">"password"</span> <span class="n">psql</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">d</span> <span class="n">template1</span> <span class="o">-</span><span class="n">c</span> <span class="s2">"CREATE DATABASE </span><span class="se">\"</span><span class="s2">nextcloud</span><span class="se">\"</span><span class="s2">;"</span>
</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-default notranslate"><div class="highlight"><pre><span></span><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-default notranslate"><div class="highlight"><pre><span></span><span class="n">rm</span> <span class="n">data</span><span class="o">/</span><span class="n">owncloud</span><span class="o">.</span><span class="n">db</span>
<span class="n">sqlite3</span> <span class="n">data</span><span class="o">/</span><span class="n">owncloud</span><span class="o">.</span><span class="n">db</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="id2">
<h3>PostgreSQL<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h3>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">PGPASSWORD</span><span class="o">=</span><span class="s2">"password"</span> <span class="n">psql</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">d</span> <span class="n">nextcloud</span> <span class="o">-</span><span class="n">f</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>
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