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<h2>Proxies with Apache and python</h2>
<span class="date">2014/10/09</span>
<span>
<a class="tag" href='../../tags/python'><span class="label">python</span></a>
<a class="tag" href='../../tags/apache'><span class="label">apache</span></a>
<a class="tag" href='../../tags/proxy'><span class="label">proxy</span></a>
<a class="tag" href='../../tags/gunicorn'><span class="label">gunicorn</span></a>
<a class="tag" href='../../tags/uwsgi'><span class="label">uwsgi</span></a>
</span>
<h3></h3>
<p>This is a quick note on proxying a local python application (e.g. flask)
to a subdirectory in Apache. This assumes that the file wsgi.py contains
a WSGI application with the name <em>application</em>. Hence, wsgi:application.</p>
<h2 id="gunicorn">Gunicorn</h2>
<div class="highlight"><div style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4">
<table style="border-spacing:0;padding:0;margin:0;border:0;width:auto;overflow:auto;display:block;"><tr><td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-apache" data-lang="apache"><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">1
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">2
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">3
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">4
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">5
</span></code></pre></td>
<td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-apache" data-lang="apache"><span style="color:#f92672">&lt;Location</span> <span style="color:#e6db74">/myapp/</span><span style="color:#f92672">&gt;</span>
ProxyPass http://127.0.0.1:8888/myapp/
ProxyPassReverse http://127.0.0.1:8888/myapp/
RequestHeader set SCRIPT_NAME <span style="color:#e6db74">&#34;/myapp/&#34;</span>
<span style="color:#f92672">&lt;/Location&gt;</span></code></pre></td></tr></table>
</div>
</div>
<p><strong>Important</strong>: <em>SCRIPT_NAME</em> and the end of <em>ProxyPass</em> URL <strong>MUST BE
THE SAME</strong>. Otherwise, Gunicorn will fail miserably.</p>
<p>Try it with:</p>
<div class="highlight"><div style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4">
<table style="border-spacing:0;padding:0;margin:0;border:0;width:auto;overflow:auto;display:block;"><tr><td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash"><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">1
</span></code></pre></td>
<td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">venv/bin/gunicorn -w <span style="color:#ae81ff">4</span> -b <span style="color:#ae81ff">127</span>.0.0.1:8888 --log-file - --access-logfile - wsgi:application</code></pre></td></tr></table>
</div>
</div>
<h2 id="uwsgi">UWSGI</h2>
<p>This is a very simple configuration. I will try to upload one with more
options for uwsgi (in a .ini file).</p>
<div class="highlight"><div style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4">
<table style="border-spacing:0;padding:0;margin:0;border:0;width:auto;overflow:auto;display:block;"><tr><td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-apache" data-lang="apache"><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">1
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">2
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">3
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">4
</span></code></pre></td>
<td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-apache" data-lang="apache"><span style="color:#f92672">&lt;Location</span> <span style="color:#e6db74">/myapp/</span><span style="color:#f92672">&gt;</span>
SetHandler uwsgi_handler
uWSGISocker <span style="color:#ae81ff">127.0.0.1</span>:8888
<span style="color:#f92672">&lt;/Location&gt;</span></code></pre></td></tr></table>
</div>
</div>
<p>Try it with:</p>
<div class="highlight"><div style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4">
<table style="border-spacing:0;padding:0;margin:0;border:0;width:auto;overflow:auto;display:block;"><tr><td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash"><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">1
</span></code></pre></td>
<td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">uwsgi --socket <span style="color:#ae81ff">127</span>.0.0.1:8888 -w wsgi:application</code></pre></td></tr></table>
</div>
</div>
<h3 id="extra-supervisor">Extra: Supervisor</h3>
<p>If everything went as expected, you can wrap your command in a
supervisor config file and let it handle the server for you.</p>
<div class="highlight"><div style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4">
<table style="border-spacing:0;padding:0;margin:0;border:0;width:auto;overflow:auto;display:block;"><tr><td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-ini" data-lang="ini"><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79"> 1
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79"> 2
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79"> 3
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79"> 4
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79"> 5
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79"> 6
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79"> 7
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79"> 8
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79"> 9
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">10
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">11
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">12
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">13
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">14
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">15
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">16
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">17
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">18
</span><span style="margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7c7c79">19
</span></code></pre></td>
<td style="vertical-align:top;padding:0;margin:0;border:0;">
<pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-ini" data-lang="ini"><span style="color:#66d9ef">[unix_http_server]</span>
<span style="color:#a6e22e">file</span><span style="color:#f92672">=</span><span style="color:#e6db74">/tmp/myapp.sock ; path to your socket file</span>
<span style="color:#66d9ef">[supervisord]</span>
<span style="color:#a6e22e">logfile</span> <span style="color:#f92672">=</span> <span style="color:#e6db74">%(here)s/logs/supervisor.log</span>
<span style="color:#a6e22e">childlogdir</span> <span style="color:#f92672">=</span> <span style="color:#e6db74">%(here)s/logs/</span>
<span style="color:#66d9ef">[rpcinterface:supervisor]</span>
<span style="color:#a6e22e">supervisor.rpcinterface_factory</span> <span style="color:#f92672">=</span> <span style="color:#e6db74">supervisor.rpcinterface:make_main_rpcinterface</span>
<span style="color:#66d9ef">[supervisorctl]</span>
<span style="color:#a6e22e">logfile</span> <span style="color:#f92672">=</span> <span style="color:#e6db74">%(here)s/logs/supervisorctl.log</span>
<span style="color:#a6e22e">serverurl</span><span style="color:#f92672">=</span><span style="color:#e6db74">unix:///tmp/supervisor.sock ; use a unix:// URL for a unix socket</span>
<span style="color:#66d9ef">[program:myapp]</span>
<span style="color:#a6e22e">command</span> <span style="color:#f92672">=</span> <span style="color:#e6db74">venv/bin/gunicorn -w 4 -b 0.0.0.0:5000 --log-file %(here)s/logs/gunicorn.log --access-logfile - wsgi:application</span>
<span style="color:#a6e22e">directory</span> <span style="color:#f92672">=</span> <span style="color:#e6db74">%(here)s</span>
<span style="color:#a6e22e">environment</span> <span style="color:#f92672">=</span> <span style="color:#e6db74">PATH=%(here)s/venv/bin/</span>
<span style="color:#a6e22e">logfile</span> <span style="color:#f92672">=</span> <span style="color:#e6db74">%(here)s/logs/myapp.log</span></code></pre></td></tr></table>
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