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<section id="uwsgi">
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<span id="searxng-uwsgi"></span><h1>uWSGI<a class="headerlink" href="#uwsgi" title="Link to this heading">¶</a></h1>
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<aside class="sidebar">
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<p class="sidebar-title">further reading</p>
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<ul class="simple">
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<li><p><a class="reference external" href="https://www.freedesktop.org/software/systemd/man/systemd.unit.html">systemd.unit</a></p></li>
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<li><p><a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html">uWSGI Emperor</a></p></li>
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</ul>
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</aside>
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<nav class="contents local" id="contents">
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<ul class="simple">
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<li><p><a class="reference internal" href="#origin-uwsgi" id="id7">Origin uWSGI</a></p></li>
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<li><p><a class="reference internal" href="#distributors" id="id8">Distributors</a></p>
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<ul>
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<li><p><a class="reference internal" href="#debian-s-uwsgi-layout" id="id9">Debian’s uWSGI layout</a></p></li>
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</ul>
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</li>
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<li><p><a class="reference internal" href="#uwsgi-maintenance" id="id10">uWSGI maintenance</a></p></li>
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<li><p><a class="reference internal" href="#uwsgi-setup" id="id11">uWSGI setup</a></p></li>
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<li><p><a class="reference internal" href="#pitfalls-of-the-tyrant-mode" id="id12">Pitfalls of the Tyrant mode</a></p></li>
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</ul>
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</nav>
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<section id="origin-uwsgi">
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<h2><a class="toc-backref" href="#id7" role="doc-backlink">Origin uWSGI</a><a class="headerlink" href="#origin-uwsgi" title="Link to this heading">¶</a></h2>
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<p>How uWSGI is implemented by distributors varies. The uWSGI project itself
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recommends two methods:</p>
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<ol class="arabic simple">
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<li><p><a class="reference external" href="https://www.freedesktop.org/software/systemd/man/systemd.unit.html">systemd.unit</a> template file as described here <a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Systemd.html#one-service-per-app-in-systemd">One service per app in systemd</a>:</p></li>
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</ol>
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<blockquote>
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<div><p>There is one <a class="reference external" href="http://0pointer.de/blog/projects/instances.html">systemd unit template</a> on the system installed and one <a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Configuration.html#ini-files">uwsgi
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ini file</a> per uWSGI-app placed at dedicated locations. Take archlinux and a
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<code class="docutils literal notranslate"><span class="pre">searxng.ini</span></code> as example:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">systemd</span> <span class="n">template</span> <span class="n">unit</span><span class="p">:</span> <span class="o">/</span><span class="n">usr</span><span class="o">/</span><span class="n">lib</span><span class="o">/</span><span class="n">systemd</span><span class="o">/</span><span class="n">system</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">@.</span><span class="n">service</span>
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<span class="n">contains</span><span class="p">:</span> <span class="p">[</span><span class="n">Service</span><span class="p">]</span>
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<span class="n">ExecStart</span><span class="o">=/</span><span class="n">usr</span><span class="o">/</span><span class="nb">bin</span><span class="o">/</span><span class="n">uwsgi</span> <span class="o">--</span><span class="n">ini</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">/%</span><span class="n">I</span><span class="o">.</span><span class="n">ini</span>
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<span class="n">SearXNG</span> <span class="n">application</span><span class="p">:</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">/</span><span class="n">searxng</span><span class="o">.</span><span class="n">ini</span>
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<span class="n">links</span> <span class="n">to</span><span class="p">:</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">/</span><span class="n">apps</span><span class="o">-</span><span class="n">available</span><span class="o">/</span><span class="n">searxng</span><span class="o">.</span><span class="n">ini</span>
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</pre></div>
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</div>
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<p>The SearXNG app (template <code class="docutils literal notranslate"><span class="pre">/etc/uwsgi/%I.ini</span></code>) can be maintained as known
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from common systemd units:</p>
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<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$<span class="w"> </span>systemctl<span class="w"> </span><span class="nb">enable</span><span class="w"> </span>uwsgi@searxng
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$<span class="w"> </span>systemctl<span class="w"> </span>start<span class="w"> </span>uwsgi@searxng
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$<span class="w"> </span>systemctl<span class="w"> </span>restart<span class="w"> </span>uwsgi@searxng
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$<span class="w"> </span>systemctl<span class="w"> </span>stop<span class="w"> </span>uwsgi@searxng
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</pre></div>
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</div>
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</div></blockquote>
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<ol class="arabic simple" start="2">
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<li><p>The <a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html">uWSGI Emperor</a> which fits for maintaining a large range of uwsgi
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apps and there is a <a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html#tyrant-mode-secure-multi-user-hosting">Tyrant mode</a> to secure multi-user hosting.</p></li>
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</ol>
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<blockquote>
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<div><p>The Emperor mode is a special uWSGI instance that will monitor specific
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events. The Emperor mode (the service) is started by a (common, not template)
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systemd unit.</p>
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<p>The Emperor service will scan specific directories for <a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Configuration.html#ini-files">uwsgi ini file</a>s
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(also know as <em>vassals</em>). If a <em>vassal</em> is added, removed or the timestamp is
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modified, a corresponding action takes place: a new uWSGI instance is started,
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reload or stopped. Take Fedora and a <code class="docutils literal notranslate"><span class="pre">searxng.ini</span></code> as example:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">to</span> <span class="n">install</span> <span class="o">&</span> <span class="n">start</span> <span class="n">SearXNG</span> <span class="n">instance</span> <span class="n">create</span> <span class="o">--></span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">.</span><span class="n">d</span><span class="o">/</span><span class="n">searxng</span><span class="o">.</span><span class="n">ini</span>
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<span class="n">to</span> <span class="n">reload</span> <span class="n">the</span> <span class="n">instance</span> <span class="n">edit</span> <span class="n">timestamp</span> <span class="o">--></span> <span class="n">touch</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">.</span><span class="n">d</span><span class="o">/</span><span class="n">searxng</span><span class="o">.</span><span class="n">ini</span>
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<span class="n">to</span> <span class="n">stop</span> <span class="n">instance</span> <span class="n">remove</span> <span class="n">ini</span> <span class="o">--></span> <span class="n">rm</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">.</span><span class="n">d</span><span class="o">/</span><span class="n">searxng</span><span class="o">.</span><span class="n">ini</span>
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</pre></div>
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</div>
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</div></blockquote>
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</section>
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<section id="distributors">
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<h2><a class="toc-backref" href="#id8" role="doc-backlink">Distributors</a><a class="headerlink" href="#distributors" title="Link to this heading">¶</a></h2>
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<p>The <a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html">uWSGI Emperor</a> mode and <a class="reference external" href="http://0pointer.de/blog/projects/instances.html">systemd unit template</a> is what the distributors
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mostly offer their users, even if they differ in the way they implement both
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modes and their defaults. Another point they might differ in is the packaging of
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plugins (if so, compare <a class="reference internal" href="installation-searxng.html#install-packages"><span class="std std-ref">Install packages</span></a>) and what the default python
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interpreter is (python2 vs. python3).</p>
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<p>While archlinux does not start a uWSGI service by default, Fedora (RHEL) starts
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a Emperor in <a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html#tyrant-mode-secure-multi-user-hosting">Tyrant mode</a> by default (you should have read <a class="reference internal" href="#uwsgi-tyrant-mode-pitfalls"><span class="std std-ref">Pitfalls of the Tyrant mode</span></a>). Worth to know; debian (ubuntu) follow a complete different
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approach, read see <a class="reference internal" href="#debian-s-uwsgi-layout"><span class="std std-ref">Debian’s uWSGI layout</span></a>.</p>
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<section id="debian-s-uwsgi-layout">
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<span id="id1"></span><h3><a class="toc-backref" href="#id9" role="doc-backlink">Debian’s uWSGI layout</a><a class="headerlink" href="#debian-s-uwsgi-layout" title="Link to this heading">¶</a></h3>
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<p>Be aware, Debian’s uWSGI layout is quite different from the standard uWSGI
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configuration. Your are familiar with <a class="reference internal" href="installation-apache.html#debian-s-apache-layout"><span class="std std-ref">Debian’s Apache layout</span></a>? .. they do a
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similar thing for the uWSGI infrastructure. The folders are:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">/</span><span class="n">apps</span><span class="o">-</span><span class="n">available</span><span class="o">/</span>
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||
<span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">/</span><span class="n">apps</span><span class="o">-</span><span class="n">enabled</span><span class="o">/</span>
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</pre></div>
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</div>
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<p>The <a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Configuration.html#ini-files">uwsgi ini file</a> is enabled by a symbolic link:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ln</span> <span class="o">-</span><span class="n">s</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">/</span><span class="n">apps</span><span class="o">-</span><span class="n">available</span><span class="o">/</span><span class="n">searxng</span><span class="o">.</span><span class="n">ini</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">uwsgi</span><span class="o">/</span><span class="n">apps</span><span class="o">-</span><span class="n">enabled</span><span class="o">/</span>
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</pre></div>
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</div>
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<p>More details can be found in the <a class="reference external" href="https://salsa.debian.org/uwsgi-team/uwsgi/-/raw/debian/latest/debian/uwsgi.README.Debian">uwsgi.README.Debian</a>
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(<code class="docutils literal notranslate"><span class="pre">/usr/share/doc/uwsgi/README.Debian.gz</span></code>). Some commands you should know on
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Debian:</p>
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<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>Commands recognized by init.d script
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====================================
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You can issue to init.d script following commands:
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* start | starts daemon
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* stop | stops daemon
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* reload | sends to daemon SIGHUP signal
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* force-reload | sends to daemon SIGTERM signal
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* restart | issues 'stop', then 'start' commands
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* status | shows status of daemon instance (running/not running)
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'status' command must be issued with exactly one argument: '<confname>'.
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Controlling specific instances of uWSGI
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=======================================
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You could control specific instance(s) by issuing:
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SYSTEMCTL_SKIP_REDIRECT=1 service uwsgi <command> <confname> <confname>...
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where:
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* <command> is one of 'start', 'stop' etc.
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* <confname> is the name of configuration file (without extension)
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For example, this is how instance for /etc/uwsgi/apps-enabled/hello.xml is
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started:
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SYSTEMCTL_SKIP_REDIRECT=1 service uwsgi start hello
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</pre></div>
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</div>
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</section>
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</section>
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<section id="uwsgi-maintenance">
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<span id="id2"></span><h2><a class="toc-backref" href="#id10" role="doc-backlink">uWSGI maintenance</a><a class="headerlink" href="#uwsgi-maintenance" title="Link to this heading">¶</a></h2>
|
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<div class="sphinx-tabs docutils container">
|
||
<div aria-label="Tabbed content" class="closeable" role="tablist"><button aria-controls="panel-0-VWJ1bnR1IC8gZGViaWFu" aria-selected="true" class="sphinx-tabs-tab group-tab" id="tab-0-VWJ1bnR1IC8gZGViaWFu" name="VWJ1bnR1IC8gZGViaWFu" role="tab" tabindex="0">Ubuntu / debian</button><button aria-controls="panel-0-QXJjaCBMaW51eA==" aria-selected="false" class="sphinx-tabs-tab group-tab" id="tab-0-QXJjaCBMaW51eA==" name="QXJjaCBMaW51eA==" role="tab" tabindex="-1">Arch Linux</button><button aria-controls="panel-0-RmVkb3JhIC8gUkhFTA==" aria-selected="false" class="sphinx-tabs-tab group-tab" id="tab-0-RmVkb3JhIC8gUkhFTA==" name="RmVkb3JhIC8gUkhFTA==" role="tab" tabindex="-1">Fedora / RHEL</button></div><div aria-labelledby="tab-0-VWJ1bnR1IC8gZGViaWFu" class="sphinx-tabs-panel group-tab" id="panel-0-VWJ1bnR1IC8gZGViaWFu" name="VWJ1bnR1IC8gZGViaWFu" role="tabpanel" tabindex="0"><div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># init.d --> /usr/share/doc/uwsgi/README.Debian.gz</span>
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<span class="c1"># For uWSGI debian uses the LSB init process, this might be changed</span>
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||
<span class="c1"># one day, see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=833067</span>
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||
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create<span class="w"> </span>/etc/uwsgi/apps-available/searxng.ini
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||
enable:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>ln<span class="w"> </span>-s<span class="w"> </span>/etc/uwsgi/apps-available/searxng.ini<span class="w"> </span>/etc/uwsgi/apps-enabled/
|
||
start:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>service<span class="w"> </span>uwsgi<span class="w"> </span>start<span class="w"> </span>searxng
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||
restart:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>service<span class="w"> </span>uwsgi<span class="w"> </span>restart<span class="w"> </span>searxng
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||
stop:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>service<span class="w"> </span>uwsgi<span class="w"> </span>stop<span class="w"> </span>searxng
|
||
disable:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>rm<span class="w"> </span>/etc/uwsgi/apps-enabled/searxng.ini
|
||
</pre></div>
|
||
</div>
|
||
</div><div aria-labelledby="tab-0-QXJjaCBMaW51eA==" class="sphinx-tabs-panel group-tab" hidden="true" id="panel-0-QXJjaCBMaW51eA==" name="QXJjaCBMaW51eA==" role="tabpanel" tabindex="0"><div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># systemd --> /usr/lib/systemd/system/uwsgi@.service</span>
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<span class="c1"># For uWSGI archlinux uses systemd template units, see</span>
|
||
<span class="c1"># - http://0pointer.de/blog/projects/instances.html</span>
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||
<span class="c1"># - https://uwsgi-docs.readthedocs.io/en/latest/Systemd.html#one-service-per-app-in-systemd</span>
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||
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create:<span class="w"> </span>/etc/uwsgi/searxng.ini
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||
enable:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>systemctl<span class="w"> </span><span class="nb">enable</span><span class="w"> </span>uwsgi@searxng
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||
start:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>systemctl<span class="w"> </span>start<span class="w"> </span>uwsgi@searxng
|
||
restart:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>systemctl<span class="w"> </span>restart<span class="w"> </span>uwsgi@searxng
|
||
stop:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>systemctl<span class="w"> </span>stop<span class="w"> </span>uwsgi@searxng
|
||
disable:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>systemctl<span class="w"> </span>disable<span class="w"> </span>uwsgi@searxng
|
||
</pre></div>
|
||
</div>
|
||
</div><div aria-labelledby="tab-0-RmVkb3JhIC8gUkhFTA==" class="sphinx-tabs-panel group-tab" hidden="true" id="panel-0-RmVkb3JhIC8gUkhFTA==" name="RmVkb3JhIC8gUkhFTA==" role="tabpanel" tabindex="0"><div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># systemd --> /usr/lib/systemd/system/uwsgi.service</span>
|
||
<span class="c1"># The unit file starts uWSGI in emperor mode (/etc/uwsgi.ini), see</span>
|
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<span class="c1"># - https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html</span>
|
||
|
||
create:<span class="w"> </span>/etc/uwsgi.d/searxng.ini
|
||
restart:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>touch<span class="w"> </span>/etc/uwsgi.d/searxng.ini
|
||
disable:<span class="w"> </span>sudo<span class="w"> </span>-H<span class="w"> </span>rm<span class="w"> </span>/etc/uwsgi.d/searxng.ini
|
||
</pre></div>
|
||
</div>
|
||
</div></div>
|
||
</section>
|
||
<section id="uwsgi-setup">
|
||
<span id="id3"></span><h2><a class="toc-backref" href="#id11" role="doc-backlink">uWSGI setup</a><a class="headerlink" href="#uwsgi-setup" title="Link to this heading">¶</a></h2>
|
||
<p>Create the configuration ini-file according to your distribution and restart the
|
||
uwsgi application. As shown below, the <a class="reference internal" href="installation-scripts.html#installation-scripts"><span class="std std-ref">Installation Script</span></a> installs by
|
||
default:</p>
|
||
<ul class="simple">
|
||
<li><p>a uWSGI setup that listens on a socket and</p></li>
|
||
<li><p>enables <a class="reference internal" href="settings/settings_ui.html#static-use-hash"><span class="std std-ref">cache busting</span></a>.</p></li>
|
||
</ul>
|
||
<div class="sphinx-tabs docutils container">
|
||
<div aria-label="Tabbed content" class="closeable" role="tablist"><button aria-controls="panel-1-VWJ1bnR1IC8gZGViaWFu" aria-selected="true" class="sphinx-tabs-tab group-tab" id="tab-1-VWJ1bnR1IC8gZGViaWFu" name="VWJ1bnR1IC8gZGViaWFu" role="tab" tabindex="0">Ubuntu / debian</button><button aria-controls="panel-1-QXJjaCBMaW51eA==" aria-selected="false" class="sphinx-tabs-tab group-tab" id="tab-1-QXJjaCBMaW51eA==" name="QXJjaCBMaW51eA==" role="tab" tabindex="-1">Arch Linux</button><button aria-controls="panel-1-RmVkb3JhIC8gUkhFTA==" aria-selected="false" class="sphinx-tabs-tab group-tab" id="tab-1-RmVkb3JhIC8gUkhFTA==" name="RmVkb3JhIC8gUkhFTA==" role="tab" tabindex="-1">Fedora / RHEL</button></div><div aria-labelledby="tab-1-VWJ1bnR1IC8gZGViaWFu" class="sphinx-tabs-panel group-tab" id="panel-1-VWJ1bnR1IC8gZGViaWFu" name="VWJ1bnR1IC8gZGViaWFu" role="tabpanel" tabindex="0"><div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># -*- mode: conf; coding: utf-8 -*-</span>
|
||
<span class="o">[</span>uwsgi<span class="o">]</span>
|
||
|
||
<span class="c1"># uWSGI core</span>
|
||
<span class="c1"># ----------</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># https://uwsgi-docs.readthedocs.io/en/latest/Options.html#uwsgi-core</span>
|
||
|
||
<span class="c1"># Who will run the code / Hint: in emperor-tyrant mode uid & gid setting will be</span>
|
||
<span class="c1"># ignored [1]. Mode emperor-tyrant is the default on fedora (/etc/uwsgi.ini).</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># [1] https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html#tyrant-mode-secure-multi-user-hosting</span>
|
||
<span class="c1">#</span>
|
||
<span class="nv">uid</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>searxng
|
||
<span class="nv">gid</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>searxng
|
||
|
||
<span class="c1"># set (python) default encoding UTF-8</span>
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">LANG</span><span class="o">=</span>C.UTF-8
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">LANGUAGE</span><span class="o">=</span>C.UTF-8
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">LC_ALL</span><span class="o">=</span>C.UTF-8
|
||
|
||
<span class="c1"># chdir to specified directory before apps loading</span>
|
||
<span class="nv">chdir</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/searxng-src/searx
|
||
|
||
<span class="c1"># SearXNG configuration (settings.yml)</span>
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">SEARXNG_SETTINGS_PATH</span><span class="o">=</span>/etc/searxng/settings.yml
|
||
|
||
<span class="c1"># disable logging for privacy</span>
|
||
disable-logging<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># The right granted on the created socket</span>
|
||
chmod-socket<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">666</span>
|
||
|
||
<span class="c1"># Plugin to use and interpreter config</span>
|
||
single-interpreter<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># enable master process</span>
|
||
<span class="nv">master</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># load apps in each worker instead of the master</span>
|
||
lazy-apps<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># load uWSGI plugins</span>
|
||
<span class="nv">plugin</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>python3,http
|
||
|
||
<span class="c1"># By default the Python plugin does not initialize the GIL. This means your</span>
|
||
<span class="c1"># app-generated threads will not run. If you need threads, remember to enable</span>
|
||
<span class="c1"># them with enable-threads. Running uWSGI in multithreading mode (with the</span>
|
||
<span class="c1"># threads options) will automatically enable threading support. This *strange*</span>
|
||
<span class="c1"># default behaviour is for performance reasons.</span>
|
||
enable-threads<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># Number of workers (usually CPU count)</span>
|
||
<span class="nv">workers</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>%k
|
||
<span class="nv">threads</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">4</span>
|
||
|
||
<span class="c1"># plugin: python</span>
|
||
<span class="c1"># --------------</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># https://uwsgi-docs.readthedocs.io/en/latest/Options.html#plugin-python</span>
|
||
|
||
<span class="c1"># load a WSGI module</span>
|
||
<span class="nv">module</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>searx.webapp
|
||
|
||
<span class="c1"># set PYTHONHOME/virtualenv</span>
|
||
<span class="nv">virtualenv</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/searx-pyenv
|
||
|
||
<span class="c1"># add directory (or glob) to pythonpath</span>
|
||
<span class="nv">pythonpath</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/searxng-src
|
||
|
||
|
||
<span class="c1"># speak to upstream</span>
|
||
<span class="c1"># -----------------</span>
|
||
|
||
<span class="nv">socket</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/run/socket
|
||
buffer-size<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">8192</span>
|
||
|
||
<span class="c1"># uWSGI serves the static files and in settings.yml we use::</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># ui:</span>
|
||
<span class="c1"># static_use_hash: true</span>
|
||
<span class="c1">#</span>
|
||
static-map<span class="w"> </span><span class="o">=</span><span class="w"> </span>/static<span class="o">=</span>/usr/local/searxng/searxng-src/searx/static
|
||
<span class="c1"># expires set to one day</span>
|
||
static-expires<span class="w"> </span><span class="o">=</span><span class="w"> </span>/*<span class="w"> </span><span class="m">86400</span>
|
||
static-gzip-all<span class="w"> </span><span class="o">=</span><span class="w"> </span>True
|
||
offload-threads<span class="w"> </span><span class="o">=</span><span class="w"> </span>%k
|
||
</pre></div>
|
||
</div>
|
||
</div><div aria-labelledby="tab-1-QXJjaCBMaW51eA==" class="sphinx-tabs-panel group-tab" hidden="true" id="panel-1-QXJjaCBMaW51eA==" name="QXJjaCBMaW51eA==" role="tabpanel" tabindex="0"><div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># -*- mode: conf; coding: utf-8 -*-</span>
|
||
<span class="o">[</span>uwsgi<span class="o">]</span>
|
||
|
||
<span class="c1"># uWSGI core</span>
|
||
<span class="c1"># ----------</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># https://uwsgi-docs.readthedocs.io/en/latest/Options.html#uwsgi-core</span>
|
||
|
||
<span class="c1"># Who will run the code</span>
|
||
<span class="nv">uid</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>searxng
|
||
<span class="nv">gid</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>searxng
|
||
|
||
<span class="c1"># set (python) default encoding UTF-8</span>
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">LANG</span><span class="o">=</span>C.UTF-8
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">LANGUAGE</span><span class="o">=</span>C.UTF-8
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">LC_ALL</span><span class="o">=</span>C.UTF-8
|
||
|
||
<span class="c1"># chdir to specified directory before apps loading</span>
|
||
<span class="nv">chdir</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/searxng-src/searx
|
||
|
||
<span class="c1"># SearXNG configuration (settings.yml)</span>
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">SEARXNG_SETTINGS_PATH</span><span class="o">=</span>/etc/searxng/settings.yml
|
||
|
||
<span class="c1"># disable logging for privacy</span>
|
||
<span class="nv">logger</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>systemd
|
||
disable-logging<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># The right granted on the created socket</span>
|
||
chmod-socket<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">666</span>
|
||
|
||
<span class="c1"># Plugin to use and interpreter config</span>
|
||
single-interpreter<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># enable master process</span>
|
||
<span class="nv">master</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># load apps in each worker instead of the master</span>
|
||
lazy-apps<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># load uWSGI plugins</span>
|
||
<span class="nv">plugin</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>python
|
||
|
||
<span class="c1"># By default the Python plugin does not initialize the GIL. This means your</span>
|
||
<span class="c1"># app-generated threads will not run. If you need threads, remember to enable</span>
|
||
<span class="c1"># them with enable-threads. Running uWSGI in multithreading mode (with the</span>
|
||
<span class="c1"># threads options) will automatically enable threading support. This *strange*</span>
|
||
<span class="c1"># default behaviour is for performance reasons.</span>
|
||
enable-threads<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># Number of workers (usually CPU count)</span>
|
||
<span class="nv">workers</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>%k
|
||
<span class="nv">threads</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">4</span>
|
||
|
||
<span class="c1"># plugin: python</span>
|
||
<span class="c1"># --------------</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># https://uwsgi-docs.readthedocs.io/en/latest/Options.html#plugin-python</span>
|
||
|
||
<span class="c1"># load a WSGI module</span>
|
||
<span class="nv">module</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>searx.webapp
|
||
|
||
<span class="c1"># set PYTHONHOME/virtualenv</span>
|
||
<span class="nv">virtualenv</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/searx-pyenv
|
||
|
||
<span class="c1"># add directory (or glob) to pythonpath</span>
|
||
<span class="nv">pythonpath</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/searxng-src
|
||
|
||
|
||
<span class="c1"># speak to upstream</span>
|
||
<span class="c1"># -----------------</span>
|
||
|
||
<span class="nv">socket</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/run/socket
|
||
buffer-size<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">8192</span>
|
||
|
||
<span class="c1"># uWSGI serves the static files and in settings.yml we use::</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># ui:</span>
|
||
<span class="c1"># static_use_hash: true</span>
|
||
<span class="c1">#</span>
|
||
static-map<span class="w"> </span><span class="o">=</span><span class="w"> </span>/static<span class="o">=</span>/usr/local/searxng/searxng-src/searx/static
|
||
<span class="c1"># expires set to one day</span>
|
||
static-expires<span class="w"> </span><span class="o">=</span><span class="w"> </span>/*<span class="w"> </span><span class="m">86400</span>
|
||
static-gzip-all<span class="w"> </span><span class="o">=</span><span class="w"> </span>True
|
||
offload-threads<span class="w"> </span><span class="o">=</span><span class="w"> </span>%k
|
||
</pre></div>
|
||
</div>
|
||
</div><div aria-labelledby="tab-1-RmVkb3JhIC8gUkhFTA==" class="sphinx-tabs-panel group-tab" hidden="true" id="panel-1-RmVkb3JhIC8gUkhFTA==" name="RmVkb3JhIC8gUkhFTA==" role="tabpanel" tabindex="0"><div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># -*- mode: conf; coding: utf-8 -*-</span>
|
||
<span class="o">[</span>uwsgi<span class="o">]</span>
|
||
|
||
<span class="c1"># uWSGI core</span>
|
||
<span class="c1"># ----------</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># https://uwsgi-docs.readthedocs.io/en/latest/Options.html#uwsgi-core</span>
|
||
|
||
<span class="c1"># Who will run the code / Hint: in emperor-tyrant mode uid & gid setting will be</span>
|
||
<span class="c1"># ignored [1]. Mode emperor-tyrant is the default on fedora (/etc/uwsgi.ini).</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># [1] https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html#tyrant-mode-secure-multi-user-hosting</span>
|
||
<span class="c1">#</span>
|
||
<span class="nv">uid</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>searxng
|
||
<span class="nv">gid</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>searxng
|
||
|
||
<span class="c1"># set (python) default encoding UTF-8</span>
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">LANG</span><span class="o">=</span>C.UTF-8
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">LANGUAGE</span><span class="o">=</span>C.UTF-8
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">LC_ALL</span><span class="o">=</span>C.UTF-8
|
||
|
||
<span class="c1"># chdir to specified directory before apps loading</span>
|
||
<span class="nv">chdir</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/searxng-src/searx
|
||
|
||
<span class="c1"># SearXNG configuration (settings.yml)</span>
|
||
<span class="nv">env</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">SEARXNG_SETTINGS_PATH</span><span class="o">=</span>/etc/searxng/settings.yml
|
||
|
||
<span class="c1"># disable logging for privacy</span>
|
||
disable-logging<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># The right granted on the created socket</span>
|
||
chmod-socket<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">666</span>
|
||
|
||
<span class="c1"># Plugin to use and interpreter config</span>
|
||
single-interpreter<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># enable master process</span>
|
||
<span class="nv">master</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># load apps in each worker instead of the master</span>
|
||
lazy-apps<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># load uWSGI plugins</span>
|
||
<span class="nv">plugin</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>python3,http
|
||
|
||
<span class="c1"># By default the Python plugin does not initialize the GIL. This means your</span>
|
||
<span class="c1"># app-generated threads will not run. If you need threads, remember to enable</span>
|
||
<span class="c1"># them with enable-threads. Running uWSGI in multithreading mode (with the</span>
|
||
<span class="c1"># threads options) will automatically enable threading support. This *strange*</span>
|
||
<span class="c1"># default behaviour is for performance reasons.</span>
|
||
enable-threads<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nb">true</span>
|
||
|
||
<span class="c1"># Number of workers (usually CPU count)</span>
|
||
<span class="nv">workers</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>%k
|
||
<span class="nv">threads</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">4</span>
|
||
|
||
<span class="c1"># plugin: python</span>
|
||
<span class="c1"># --------------</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># https://uwsgi-docs.readthedocs.io/en/latest/Options.html#plugin-python</span>
|
||
|
||
<span class="c1"># load a WSGI module</span>
|
||
<span class="nv">module</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>searx.webapp
|
||
|
||
<span class="c1"># set PYTHONHOME/virtualenv</span>
|
||
<span class="nv">virtualenv</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/searx-pyenv
|
||
|
||
<span class="c1"># add directory (or glob) to pythonpath</span>
|
||
<span class="nv">pythonpath</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/searxng-src
|
||
|
||
|
||
<span class="c1"># speak to upstream</span>
|
||
<span class="c1"># -----------------</span>
|
||
|
||
<span class="nv">socket</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>/usr/local/searxng/run/socket
|
||
buffer-size<span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">8192</span>
|
||
|
||
<span class="c1"># uWSGI serves the static files and in settings.yml we use::</span>
|
||
<span class="c1">#</span>
|
||
<span class="c1"># ui:</span>
|
||
<span class="c1"># static_use_hash: true</span>
|
||
<span class="c1">#</span>
|
||
static-map<span class="w"> </span><span class="o">=</span><span class="w"> </span>/static<span class="o">=</span>/usr/local/searxng/searxng-src/searx/static
|
||
<span class="c1"># expires set to one day</span>
|
||
static-expires<span class="w"> </span><span class="o">=</span><span class="w"> </span>/*<span class="w"> </span><span class="m">86400</span>
|
||
static-gzip-all<span class="w"> </span><span class="o">=</span><span class="w"> </span>True
|
||
offload-threads<span class="w"> </span><span class="o">=</span><span class="w"> </span>%k
|
||
</pre></div>
|
||
</div>
|
||
</div></div>
|
||
</section>
|
||
<section id="pitfalls-of-the-tyrant-mode">
|
||
<span id="uwsgi-tyrant-mode-pitfalls"></span><h2><a class="toc-backref" href="#id12" role="doc-backlink">Pitfalls of the Tyrant mode</a><a class="headerlink" href="#pitfalls-of-the-tyrant-mode" title="Link to this heading">¶</a></h2>
|
||
<p>The implementation of the process owners and groups in the <a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html#tyrant-mode-secure-multi-user-hosting">Tyrant mode</a> is
|
||
somewhat unusual and requires special consideration. In <a class="reference external" href="https://uwsgi-docs.readthedocs.io/en/latest/Emperor.html#tyrant-mode-secure-multi-user-hosting">Tyrant mode</a> mode the
|
||
Emperor will run the vassal using the UID/GID of the vassal configuration file
|
||
(user and group of the app <code class="docutils literal notranslate"><span class="pre">.ini</span></code> file).</p>
|
||
<p>Without option <code class="docutils literal notranslate"><span class="pre">emperor-tyrant-initgroups=true</span></code> in <code class="docutils literal notranslate"><span class="pre">/etc/uwsgi.ini</span></code> the
|
||
process won’t get the additional groups, but this option is not available in
|
||
2.0.x branch (see <a class="reference external" href="https://github.com/unbit/uwsgi/issues/2099">#2099@uWSGI</a>) the feature <a class="reference external" href="https://github.com/unbit/uwsgi/pull/752">#752@uWSGI</a> has been merged (on
|
||
Oct. 2014) to the master branch of uWSGI but had never been released; the last
|
||
major release is from Dec. 2013, since the there had been only bugfix releases
|
||
(see <a class="reference external" href="https://github.com/unbit/uwsgi/issues/2425">#2425uWSGI</a>). To shorten up:</p>
|
||
<blockquote>
|
||
<div><p><strong>In Tyrant mode, there is no way to get additional groups, and the uWSGI
|
||
process misses additional permissions that may be needed.</strong></p>
|
||
</div></blockquote>
|
||
<p>For example on Fedora (RHEL): If you try to install a redis DB with socket
|
||
communication and you want to connect to it from the SearXNG uWSGI, you will see a
|
||
<em>Permission denied</em> in the log of your instance:</p>
|
||
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>ERROR:searx.redisdb: [searxng (993)] can't connect redis DB ...
|
||
ERROR:searx.redisdb: Error 13 connecting to unix socket: /usr/local/searxng-redis/run/redis.sock. Permission denied.
|
||
ERROR:searx.plugins.limiter: init limiter DB failed!!!
|
||
</pre></div>
|
||
</div>
|
||
<p>Even if your <em>searxng</em> user of the uWSGI process is added to additional groups
|
||
to give access to the socket from the redis DB:</p>
|
||
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ groups searxng
|
||
searxng : searxng searxng-redis
|
||
</pre></div>
|
||
</div>
|
||
<p>To see the effective groups of the uwsgi process, you have to look at the status
|
||
of the process, by example:</p>
|
||
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ ps -aef | grep '/usr/sbin/uwsgi --ini searxng.ini'
|
||
searxng 93 92 0 12:43 ? 00:00:00 /usr/sbin/uwsgi --ini searxng.ini
|
||
searxng 186 93 0 12:44 ? 00:00:01 /usr/sbin/uwsgi --ini searxng.ini
|
||
</pre></div>
|
||
</div>
|
||
<p>Here you can see that the additional “Groups” of PID 186 are unset (missing gid
|
||
of <code class="docutils literal notranslate"><span class="pre">searxng-redis</span></code>):</p>
|
||
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ cat /proc/186/task/186/status
|
||
...
|
||
Uid: 993 993 993 993
|
||
Gid: 993 993 993 993
|
||
FDSize: 128
|
||
Groups:
|
||
...
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
</section>
|
||
|
||
|
||
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|
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|
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|
||
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||
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|
||
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|
||
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|
||
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|
||
|
||
|
||
<h3><a href="../index.html">Table of Contents</a></h3>
|
||
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|
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<li class="toctree-l1"><a class="reference internal" href="../user/index.html">User information</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../own-instance.html">Why use a private instance?</a></li>
|
||
<li class="toctree-l1 current"><a class="reference internal" href="index.html">Administrator documentation</a><ul class="current">
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||
<li class="toctree-l2"><a class="reference internal" href="settings/index.html">Settings</a></li>
|
||
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|
||
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|
||
<li class="toctree-l2"><a class="reference internal" href="installation-searxng.html">Step by step installation</a></li>
|
||
<li class="toctree-l2 current"><a class="current reference internal" href="#">uWSGI</a><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="#origin-uwsgi">Origin uWSGI</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="#distributors">Distributors</a><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="#debian-s-uwsgi-layout">Debian’s uWSGI layout</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l3"><a class="reference internal" href="#uwsgi-maintenance">uWSGI maintenance</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="#uwsgi-setup">uWSGI setup</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="#pitfalls-of-the-tyrant-mode">Pitfalls of the Tyrant mode</a></li>
|
||
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|
||
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|
||
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|
||
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|
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|
||
<li class="toctree-l2"><a class="reference internal" href="api.html">Administration API</a></li>
|
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<li class="toctree-l2"><a class="reference internal" href="architecture.html">Architecture</a></li>
|
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|
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|
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|
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|
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|
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|
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|
||
|
||
<h3>Project Links</h3>
|
||
<ul>
|
||
<li><a href="https://github.com/searxng/searxng/tree/master">Source</a>
|
||
|
||
<li><a href="https://github.com/searxng/searxng/wiki">Wiki</a>
|
||
|
||
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|
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|
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<li><a href="https://github.com/searxng/searxng/issues">Issue Tracker</a>
|
||
</ul><h3>Navigation</h3>
|
||
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|
||
<li><a href="../index.html">Overview</a>
|
||
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|
||
<li><a href="index.html">Administrator documentation</a>
|
||
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|
||
<li>Previous: <a href="installation-searxng.html" title="previous chapter">Step by step installation</a>
|
||
<li>Next: <a href="installation-nginx.html" title="next chapter">NGINX</a></ul>
|
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