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<title>Installation — SATHI: Self Reported Assessment and Tracking for Health Insights Version 2.0 documentation</title>
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<section id="installation">
<h1>Installation<a class="headerlink" href="#installation" title="Link to this heading">¶</a></h1>
<p>Complete guide for installing SATHI on Linux servers.</p>
<nav class="contents local" id="table-of-contents">
<p class="topic-title">Table of Contents</p>
<ul class="simple">
<li><p><a class="reference internal" href="#prerequisites" id="id1">Prerequisites</a></p></li>
<li><p><a class="reference internal" href="#development-installation" id="id2">Development Installation</a></p>
<ul>
<li><p><a class="reference internal" href="#quick-setup" id="id3">Quick Setup</a></p></li>
</ul>
</li>
<li><p><a class="reference internal" href="#production-installation" id="id4">Production Installation</a></p>
<ul>
<li><p><a class="reference internal" href="#step-1-system-setup" id="id5">Step 1: System Setup</a></p></li>
<li><p><a class="reference internal" href="#step-2-database-setup" id="id6">Step 2: Database Setup</a></p></li>
<li><p><a class="reference internal" href="#step-3-application-setup" id="id7">Step 3: Application Setup</a></p></li>
<li><p><a class="reference internal" href="#step-4-gunicorn-configuration" id="id8">Step 4: Gunicorn Configuration</a></p></li>
<li><p><a class="reference internal" href="#step-5-supervisor-configuration" id="id9">Step 5: Supervisor Configuration</a></p></li>
<li><p><a class="reference internal" href="#step-6-nginx-configuration-http-only-before-ssl" id="id10">Step 6: Nginx Configuration (HTTP Only - Before SSL)</a></p></li>
<li><p><a class="reference internal" href="#step-7-obtain-ssl-certificate-with-let-s-encrypt" id="id11">Step 7: Obtain SSL Certificate with Let’s Encrypt</a></p></li>
<li><p><a class="reference internal" href="#step-8-firewall-setup" id="id12">Step 8: Firewall Setup</a></p></li>
</ul>
</li>
<li><p><a class="reference internal" href="#maintenance" id="id13">Maintenance</a></p>
<ul>
<li><p><a class="reference internal" href="#updating-application" id="id14">Updating Application</a></p></li>
<li><p><a class="reference internal" href="#viewing-logs" id="id15">Viewing Logs</a></p></li>
</ul>
</li>
<li><p><a class="reference internal" href="#troubleshooting" id="id16">Troubleshooting</a></p></li>
</ul>
</nav>
<section id="prerequisites">
<h2><a class="toc-backref" href="#id1" role="doc-backlink">Prerequisites</a><a class="headerlink" href="#prerequisites" title="Link to this heading">¶</a></h2>
<p><strong>System Requirements:</strong></p>
<ul class="simple">
<li><p>Ubuntu 20.04+ or Debian-based Linux</p></li>
<li><p>4GB RAM minimum (8GB recommended)</p></li>
<li><p>Python 3.13+</p></li>
<li><p>PostgreSQL 14+</p></li>
<li><p>Domain name (for SSL)</p></li>
</ul>
<p><strong>Required Software:</strong></p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo<span class="w"> </span>apt<span class="w"> </span>update<span class="w"> </span><span class="o">&&</span><span class="w"> </span>sudo<span class="w"> </span>apt<span class="w"> </span>install<span class="w"> </span>-y<span class="w"> </span><span class="se">\</span>
<span class="w"> </span>python3.13<span class="w"> </span>python3.13-venv<span class="w"> </span>python3.13-dev<span class="w"> </span><span class="se">\</span>
<span class="w"> </span>postgresql<span class="w"> </span>postgresql-contrib<span class="w"> </span>libpq-dev<span class="w"> </span><span class="se">\</span>
<span class="w"> </span>nginx<span class="w"> </span>supervisor<span class="w"> </span>memcached<span class="w"> </span>git<span class="w"> </span><span class="se">\</span>
<span class="w"> </span>build-essential<span class="w"> </span>libssl-dev<span class="w"> </span>python3-magic
</pre></div>
</div>
</section>
<section id="development-installation">
<h2><a class="toc-backref" href="#id2" role="doc-backlink">Development Installation</a><a class="headerlink" href="#development-installation" title="Link to this heading">¶</a></h2>
<section id="quick-setup">
<h3><a class="toc-backref" href="#id3" role="doc-backlink">Quick Setup</a><a class="headerlink" href="#quick-setup" title="Link to this heading">¶</a></h3>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># 1. Clone repository</span>
git<span class="w"> </span>clone<span class="w"> </span>https://github.com/your-org/chavi-prom.git
<span class="nb">cd</span><span class="w"> </span>chavi-prom
<span class="c1"># 2. Create virtual environment</span>
python3.13<span class="w"> </span>-m<span class="w"> </span>venv<span class="w"> </span>venv
<span class="nb">source</span><span class="w"> </span>venv/bin/activate
pip<span class="w"> </span>install<span class="w"> </span>-r<span class="w"> </span>requirements.txt
<span class="c1"># 3. Setup PostgreSQL</span>
sudo<span class="w"> </span>-u<span class="w"> </span>postgres<span class="w"> </span>psql<span class="w"> </span>-c<span class="w"> </span><span class="s2">"CREATE DATABASE chaviprom;"</span>
sudo<span class="w"> </span>-u<span class="w"> </span>postgres<span class="w"> </span>psql<span class="w"> </span>-c<span class="w"> </span><span class="s2">"CREATE USER chaviprom_user WITH PASSWORD 'password';"</span>
sudo<span class="w"> </span>-u<span class="w"> </span>postgres<span class="w"> </span>psql<span class="w"> </span>-c<span class="w"> </span><span class="s2">"GRANT ALL ON DATABASE chaviprom TO chaviprom_user;"</span>
<span class="c1"># 4. Configure environment</span>
cp<span class="w"> </span>sampleenv.txt<span class="w"> </span>.env
<span class="c1"># Edit .env with your settings</span>
<span class="c1"># 5. Run migrations</span>
python<span class="w"> </span>manage.py<span class="w"> </span>migrate
python<span class="w"> </span>manage.py<span class="w"> </span>createsuperuser
python<span class="w"> </span>manage.py<span class="w"> </span>collectstatic<span class="w"> </span>--noinput
<span class="c1"># 6. Start server</span>
python<span class="w"> </span>manage.py<span class="w"> </span>runserver
</pre></div>
</div>
</section>
</section>
<section id="production-installation">
<h2><a class="toc-backref" href="#id4" role="doc-backlink">Production Installation</a><a class="headerlink" href="#production-installation" title="Link to this heading">¶</a></h2>
<section id="step-1-system-setup">
<h3><a class="toc-backref" href="#id5" role="doc-backlink">Step 1: System Setup</a><a class="headerlink" href="#step-1-system-setup" title="Link to this heading">¶</a></h3>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># Install all dependencies</span>
sudo<span class="w"> </span>apt<span class="w"> </span>update<span class="w"> </span><span class="o">&&</span><span class="w"> </span>sudo<span class="w"> </span>apt<span class="w"> </span>install<span class="w"> </span>-y<span class="w"> </span><span class="se">\</span>
<span class="w"> </span>python3.13<span class="w"> </span>python3.13-venv<span class="w"> </span>postgresql<span class="w"> </span>nginx<span class="w"> </span><span class="se">\</span>
<span class="w"> </span>supervisor<span class="w"> </span>memcached<span class="w"> </span>certbot<span class="w"> </span>python3-certbot-nginx
<span class="c1"># Create system user</span>
sudo<span class="w"> </span>useradd<span class="w"> </span>-m<span class="w"> </span>-s<span class="w"> </span>/bin/bash<span class="w"> </span>sathi
sudo<span class="w"> </span>usermod<span class="w"> </span>-aG<span class="w"> </span>www-data<span class="w"> </span>sathi
</pre></div>
</div>
</section>
<section id="step-2-database-setup">
<h3><a class="toc-backref" href="#id6" role="doc-backlink">Step 2: Database Setup</a><a class="headerlink" href="#step-2-database-setup" title="Link to this heading">¶</a></h3>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo<span class="w"> </span>-u<span class="w"> </span>postgres<span class="w"> </span>psql<span class="w"> </span><span class="s"><< EOF</span>
<span class="s">CREATE DATABASE chaviprom_prod;</span>
<span class="s">CREATE USER chaviprom_prod WITH PASSWORD 'strong_password';</span>
<span class="s">GRANT ALL ON DATABASE chaviprom_prod TO chaviprom_prod;</span>
<span class="s">EOF</span>
</pre></div>
</div>
</section>
<section id="step-3-application-setup">
<h3><a class="toc-backref" href="#id7" role="doc-backlink">Step 3: Application Setup</a><a class="headerlink" href="#step-3-application-setup" title="Link to this heading">¶</a></h3>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo<span class="w"> </span>su<span class="w"> </span>-<span class="w"> </span>sathi
git<span class="w"> </span>clone<span class="w"> </span>https://github.com/your-org/chavi-prom.git
<span class="nb">cd</span><span class="w"> </span>chavi-prom
python3.13<span class="w"> </span>-m<span class="w"> </span>venv<span class="w"> </span>venv
<span class="nb">source</span><span class="w"> </span>venv/bin/activate
pip<span class="w"> </span>install<span class="w"> </span>-r<span class="w"> </span>requirements.txt
<span class="c1"># Create .env file with production settings</span>
nano<span class="w"> </span>.env
</pre></div>
</div>
<p><strong>Production .env:</strong></p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nv">DJANGO_SECRET_KEY</span><span class="o">=</span>your-secret-key
<span class="nv">DJANGO_DEBUG</span><span class="o">=</span>False
<span class="nv">DJANGO_ALLOWED_HOSTS</span><span class="o">=</span>yourdomain.com
<span class="nv">DJANGO_CSRF_TRUSTED_ORIGINS</span><span class="o">=</span>https://yourdomain.com
<span class="nv">DJANGO_DATABASE_ENGINE</span><span class="o">=</span>django.db.backends.postgresql_psycopg2
<span class="nv">DJANGO_DATABASE_NAME</span><span class="o">=</span>chaviprom_prod
<span class="nv">DJANGO_DATABASE_USER</span><span class="o">=</span>chaviprom_prod
<span class="nv">DJANGO_DATABASE_PASSWORD</span><span class="o">=</span>strong_password
<span class="nv">DJANGO_SECURED_FIELDS_KEY</span><span class="o">=</span>your-encryption-key
<span class="nv">DJANGO_ENVIRONMENT</span><span class="o">=</span>production
</pre></div>
</div>
</section>
<section id="step-4-gunicorn-configuration">
<h3><a class="toc-backref" href="#id8" role="doc-backlink">Step 4: Gunicorn Configuration</a><a class="headerlink" href="#step-4-gunicorn-configuration" title="Link to this heading">¶</a></h3>
<p>Create <code class="docutils literal notranslate"><span class="pre">/home/sathi/chavi-prom/gunicorn_config.py</span></code>:</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span><span class="w"> </span><span class="nn">multiprocessing</span>
<span class="n">bind</span> <span class="o">=</span> <span class="s2">"127.0.0.1:8000"</span>
<span class="n">workers</span> <span class="o">=</span> <span class="n">multiprocessing</span><span class="o">.</span><span class="n">cpu_count</span><span class="p">()</span> <span class="o">*</span> <span class="mi">2</span> <span class="o">+</span> <span class="mi">1</span>
<span class="n">accesslog</span> <span class="o">=</span> <span class="s2">"/home/sathi/chavi-prom/logs/gunicorn_access.log"</span>
<span class="n">errorlog</span> <span class="o">=</span> <span class="s2">"/home/sathi/chavi-prom/logs/gunicorn_error.log"</span>
<span class="n">loglevel</span> <span class="o">=</span> <span class="s2">"info"</span>
<span class="n">timeout</span> <span class="o">=</span> <span class="mi">120</span>
</pre></div>
</div>
</section>
<section id="step-5-supervisor-configuration">
<h3><a class="toc-backref" href="#id9" role="doc-backlink">Step 5: Supervisor Configuration</a><a class="headerlink" href="#step-5-supervisor-configuration" title="Link to this heading">¶</a></h3>
<p>Create <code class="docutils literal notranslate"><span class="pre">/etc/supervisor/conf.d/sathi.conf</span></code>:</p>
<div class="highlight-ini notranslate"><div class="highlight"><pre><span></span><span class="k">[program:sathi]</span>
<span class="na">command</span><span class="o">=</span><span class="s">/home/sathi/chavi-prom/venv/bin/gunicorn </span>\
<span class="w"> </span><span class="s">--config /home/sathi/chavi-prom/gunicorn_config.py </span>\
<span class="w"> </span><span class="s">chaviprom.wsgi:application</span>
<span class="na">directory</span><span class="o">=</span><span class="s">/home/sathi/chavi-prom</span>
<span class="na">user</span><span class="o">=</span><span class="s">sathi</span>
<span class="na">autostart</span><span class="o">=</span><span class="s">true</span>
<span class="na">autorestart</span><span class="o">=</span><span class="s">true</span>
<span class="na">stdout_logfile</span><span class="o">=</span><span class="s">/home/sathi/chavi-prom/logs/supervisor.log</span>
</pre></div>
</div>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo<span class="w"> </span>supervisorctl<span class="w"> </span>reread
sudo<span class="w"> </span>supervisorctl<span class="w"> </span>update
sudo<span class="w"> </span>supervisorctl<span class="w"> </span>start<span class="w"> </span>sathi
</pre></div>
</div>
</section>
<section id="step-6-nginx-configuration-http-only-before-ssl">
<h3><a class="toc-backref" href="#id10" role="doc-backlink">Step 6: Nginx Configuration (HTTP Only - Before SSL)</a><a class="headerlink" href="#step-6-nginx-configuration-http-only-before-ssl" title="Link to this heading">¶</a></h3>
<p>Create initial HTTP-only configuration at <code class="docutils literal notranslate"><span class="pre">/etc/nginx/sites-available/sathi</span></code>:</p>
<div class="highlight-nginx notranslate"><div class="highlight"><pre><span></span><span class="k">upstream</span><span class="w"> </span><span class="s">sathi_app</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="kn">server</span><span class="w"> </span><span class="n">127.0.0.1</span><span class="p">:</span><span class="mi">8000</span><span class="w"> </span><span class="s">fail_timeout=0</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">server</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="kn">listen</span><span class="w"> </span><span class="mi">80</span><span class="p">;</span>
<span class="w"> </span><span class="kn">listen</span><span class="w"> </span><span class="s">[::]:80</span><span class="p">;</span>
<span class="w"> </span><span class="kn">server_name</span><span class="w"> </span><span class="s">yourdomain.com</span><span class="w"> </span><span class="s">www.yourdomain.com</span><span class="p">;</span>
<span class="w"> </span><span class="kn">client_max_body_size</span><span class="w"> </span><span class="s">100M</span><span class="p">;</span>
<span class="w"> </span><span class="kn">access_log</span><span class="w"> </span><span class="s">/var/log/nginx/sathi_access.log</span><span class="p">;</span>
<span class="w"> </span><span class="kn">error_log</span><span class="w"> </span><span class="s">/var/log/nginx/sathi_error.log</span><span class="p">;</span>
<span class="w"> </span><span class="kn">location</span><span class="w"> </span><span class="s">/static/</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="kn">alias</span><span class="w"> </span><span class="s">/home/sathi/chavi-prom/staticfiles/</span><span class="p">;</span>
<span class="w"> </span><span class="kn">expires</span><span class="w"> </span><span class="s">30d</span><span class="p">;</span>
<span class="w"> </span><span class="kn">add_header</span><span class="w"> </span><span class="s">Cache-Control</span><span class="w"> </span><span class="s">"public,</span><span class="w"> </span><span class="s">immutable"</span><span class="p">;</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="kn">location</span><span class="w"> </span><span class="s">/media/</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="kn">alias</span><span class="w"> </span><span class="s">/home/sathi/chavi-prom/media/</span><span class="p">;</span>
<span class="w"> </span><span class="kn">expires</span><span class="w"> </span><span class="s">7d</span><span class="p">;</span>
<span class="w"> </span><span class="kn">add_header</span><span class="w"> </span><span class="s">Cache-Control</span><span class="w"> </span><span class="s">"public"</span><span class="p">;</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="kn">location</span><span class="w"> </span><span class="s">/</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="kn">proxy_pass</span><span class="w"> </span><span class="s">http://sathi_app</span><span class="p">;</span>
<span class="w"> </span><span class="kn">proxy_set_header</span><span class="w"> </span><span class="s">Host</span><span class="w"> </span><span class="nv">$host</span><span class="p">;</span>
<span class="w"> </span><span class="kn">proxy_set_header</span><span class="w"> </span><span class="s">X-Real-IP</span><span class="w"> </span><span class="nv">$remote_addr</span><span class="p">;</span>
<span class="w"> </span><span class="kn">proxy_set_header</span><span class="w"> </span><span class="s">X-Forwarded-For</span><span class="w"> </span><span class="nv">$proxy_add_x_forwarded_for</span><span class="p">;</span>
<span class="w"> </span><span class="kn">proxy_set_header</span><span class="w"> </span><span class="s">X-Forwarded-Proto</span><span class="w"> </span><span class="nv">$scheme</span><span class="p">;</span>
<span class="w"> </span><span class="kn">proxy_redirect</span><span class="w"> </span><span class="no">off</span><span class="p">;</span>
<span class="w"> </span><span class="kn">proxy_connect_timeout</span><span class="w"> </span><span class="s">120s</span><span class="p">;</span>
<span class="w"> </span><span class="kn">proxy_send_timeout</span><span class="w"> </span><span class="s">120s</span><span class="p">;</span>
<span class="w"> </span><span class="kn">proxy_read_timeout</span><span class="w"> </span><span class="s">120s</span><span class="p">;</span>
<span class="w"> </span><span class="p">}</span>
<span class="p">}</span>
</pre></div>
</div>
<p>Enable the site and test configuration:</p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo<span class="w"> </span>ln<span class="w"> </span>-s<span class="w"> </span>/etc/nginx/sites-available/sathi<span class="w"> </span>/etc/nginx/sites-enabled/
sudo<span class="w"> </span>rm<span class="w"> </span>/etc/nginx/sites-enabled/default<span class="w"> </span><span class="c1"># Remove default site</span>
sudo<span class="w"> </span>nginx<span class="w"> </span>-t
sudo<span class="w"> </span>systemctl<span class="w"> </span>restart<span class="w"> </span>nginx
</pre></div>
</div>
<p><strong>Verify HTTP access:</strong> Visit <a class="reference external" href="http://yourdomain.com">http://yourdomain.com</a> to ensure the site loads.</p>
</section>
<section id="step-7-obtain-ssl-certificate-with-let-s-encrypt">
<h3><a class="toc-backref" href="#id11" role="doc-backlink">Step 7: Obtain SSL Certificate with Let’s Encrypt</a><a class="headerlink" href="#step-7-obtain-ssl-certificate-with-let-s-encrypt" title="Link to this heading">¶</a></h3>
<p><strong>Prerequisites:</strong></p>
<ul class="simple">
<li><p>Domain name must point to your server’s IP address</p></li>
<li><p>Port 80 must be accessible (for Let’s Encrypt verification)</p></li>
<li><p>Nginx must be running with HTTP configuration</p></li>
</ul>
<p><strong>Obtain and Install Certificate:</strong></p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># Run Certbot with Nginx plugin</span>
sudo<span class="w"> </span>certbot<span class="w"> </span>--nginx<span class="w"> </span>-d<span class="w"> </span>yourdomain.com<span class="w"> </span>-d<span class="w"> </span>www.yourdomain.com
</pre></div>
</div>
<p><strong>Certbot will:</strong></p>
<ol class="arabic simple">
<li><p>Verify domain ownership via HTTP challenge</p></li>
<li><p>Generate SSL certificates</p></li>
<li><p><strong>Automatically modify your Nginx configuration</strong> to:</p>
<ul class="simple">
<li><p>Add SSL certificate paths</p></li>
<li><p>Configure SSL protocols and ciphers</p></li>
<li><p>Set up HTTP to HTTPS redirect</p></li>
<li><p>Add security headers</p></li>
</ul>
</li>
<li><p>Reload Nginx with new configuration</p></li>
</ol>
<p><strong>During the process, Certbot will ask:</strong></p>
<ul class="simple">
<li><p>Your email address (for renewal notifications)</p></li>
<li><p>Agreement to Terms of Service</p></li>
<li><p>Whether to redirect HTTP to HTTPS (choose <strong>Yes</strong>)</p></li>
</ul>
<p><strong>Verify SSL Configuration:</strong></p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># Check certificate was installed</span>
sudo<span class="w"> </span>certbot<span class="w"> </span>certificates
<span class="c1"># Test Nginx configuration</span>
sudo<span class="w"> </span>nginx<span class="w"> </span>-t
<span class="c1"># Verify HTTPS works</span>
curl<span class="w"> </span>-I<span class="w"> </span>https://yourdomain.com
</pre></div>
</div>
<p><strong>Test Automatic Renewal:</strong></p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># Dry run to test renewal process</span>
sudo<span class="w"> </span>certbot<span class="w"> </span>renew<span class="w"> </span>--dry-run
</pre></div>
</div>
<p><strong>Certificate Auto-Renewal:</strong></p>
<p>Certbot automatically creates a systemd timer for renewal. Verify it’s active:</p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># Check timer status</span>
sudo<span class="w"> </span>systemctl<span class="w"> </span>status<span class="w"> </span>certbot.timer
<span class="c1"># View timer schedule</span>
sudo<span class="w"> </span>systemctl<span class="w"> </span>list-timers<span class="w"> </span><span class="p">|</span><span class="w"> </span>grep<span class="w"> </span>certbot
</pre></div>
</div>
<p>Certificates will auto-renew when they have 30 days or less remaining.</p>
<p><strong>Manual Renewal (if needed):</strong></p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo<span class="w"> </span>certbot<span class="w"> </span>renew
sudo<span class="w"> </span>systemctl<span class="w"> </span>reload<span class="w"> </span>nginx
</pre></div>
</div>
</section>
<section id="step-8-firewall-setup">
<h3><a class="toc-backref" href="#id12" role="doc-backlink">Step 8: Firewall Setup</a><a class="headerlink" href="#step-8-firewall-setup" title="Link to this heading">¶</a></h3>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo<span class="w"> </span>ufw<span class="w"> </span>allow<span class="w"> </span>OpenSSH
sudo<span class="w"> </span>ufw<span class="w"> </span>allow<span class="w"> </span><span class="s1">'Nginx Full'</span>
sudo<span class="w"> </span>ufw<span class="w"> </span><span class="nb">enable</span>
</pre></div>
</div>
</section>
</section>
<section id="maintenance">
<h2><a class="toc-backref" href="#id13" role="doc-backlink">Maintenance</a><a class="headerlink" href="#maintenance" title="Link to this heading">¶</a></h2>
<section id="updating-application">
<h3><a class="toc-backref" href="#id14" role="doc-backlink">Updating Application</a><a class="headerlink" href="#updating-application" title="Link to this heading">¶</a></h3>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo<span class="w"> </span>su<span class="w"> </span>-<span class="w"> </span>sathi
<span class="nb">cd</span><span class="w"> </span>chavi-prom
git<span class="w"> </span>pull
<span class="nb">source</span><span class="w"> </span>venv/bin/activate
pip<span class="w"> </span>install<span class="w"> </span>-r<span class="w"> </span>requirements.txt
python<span class="w"> </span>manage.py<span class="w"> </span>migrate
python<span class="w"> </span>manage.py<span class="w"> </span>collectstatic<span class="w"> </span>--noinput
<span class="nb">exit</span>
sudo<span class="w"> </span>supervisorctl<span class="w"> </span>restart<span class="w"> </span>sathi
</pre></div>
</div>
</section>
<section id="viewing-logs">
<h3><a class="toc-backref" href="#id15" role="doc-backlink">Viewing Logs</a><a class="headerlink" href="#viewing-logs" title="Link to this heading">¶</a></h3>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># Application logs</span>
tail<span class="w"> </span>-f<span class="w"> </span>/home/sathi/chavi-prom/logs/gunicorn_error.log
<span class="c1"># Nginx logs</span>
tail<span class="w"> </span>-f<span class="w"> </span>/var/log/nginx/sathi_error.log
<span class="c1"># Supervisor status</span>
sudo<span class="w"> </span>supervisorctl<span class="w"> </span>status
</pre></div>
</div>
</section>
</section>
<section id="troubleshooting">
<h2><a class="toc-backref" href="#id16" role="doc-backlink">Troubleshooting</a><a class="headerlink" href="#troubleshooting" title="Link to this heading">¶</a></h2>
<p><strong>Service not starting:</strong></p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo<span class="w"> </span>supervisorctl<span class="w"> </span>status<span class="w"> </span>sathi
sudo<span class="w"> </span>supervisorctl<span class="w"> </span>tail<span class="w"> </span>sathi<span class="w"> </span>stderr
</pre></div>
</div>
<p><strong>Database connection errors:</strong></p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1"># Test PostgreSQL connection</span>
psql<span class="w"> </span>-U<span class="w"> </span>chaviprom_prod<span class="w"> </span>-d<span class="w"> </span>chaviprom_prod<span class="w"> </span>-h<span class="w"> </span>localhost
</pre></div>
</div>
<p><strong>SSL certificate issues:</strong></p>
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>sudo<span class="w"> </span>certbot<span class="w"> </span>certificates
sudo<span class="w"> </span>certbot<span class="w"> </span>renew<span class="w"> </span>--force-renewal
</pre></div>
</div>
</section>
</section>
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