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<div class="section" id="utiliser-supervisor">
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<h1>Utiliser supervisor<a class="headerlink" href="#utiliser-supervisor" title="Permalink to this headline">¶</a></h1>
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<p>Supervisor est un très bon moyen de gérer des processus Python. Nous n’allons
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pas couvrir son installation (qui la plupart du temps se résume à
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apt-get install supervisor ou pip install supervisor), mais voici un rapide
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résumé de comment l’utiliser:</p>
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<p>Créez un fichier de configuration nommé supervisor.ini:</p>
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<div class="highlight-python"><pre>[unix_http_server]
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file=/tmp/supervisor.sock;
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[supervisorctl]
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serverurl=unix:///tmp/supervisor.sock;
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[rpcinterface:supervisor]
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supervisor.rpcinterface_factory=supervisor.rpcinterface:make_main_rpcinterface
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[supervisord]
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logfile=/tmp/zerobin.log
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logfile_maxbytes=50MB
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logfile_backups=2
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loglevel=trace
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pidfile=/tmp/supervisord.pid
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nodaemon=false
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minfds=1024
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minprocs=200
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user=zerobin
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[program:zerobin]
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command=/chemin/vers/zerobin/zerobin.py --port 80 --compressed-static
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directory=/chemin/vers/zerobin/
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environment=PYTHONPATH='/chemin/vers/zerobin/'
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user=zerobin
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autostart=true
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autorestart=true</pre>
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</div>
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<p>Les 4 premières entrées sont juste de la configuration standard et vous pouvez
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les copier telles qu’elles.</p>
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<p>La dernière entrée définie un processus (il peut y en avoir plusieurs)
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que supervisor doit gérer.</p>
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<p>Cela veut dire qu’il va lancer la commande:</p>
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<div class="highlight-python"><pre>/chemin/vers/zerobin/zerobin.py --port 80 --compressed-static</pre>
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</div>
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<p>Et ceci dans le dossier, avec l’environnement et l’utilisateur défini, le tout
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en arrière plan en tant que daemon.</p>
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<p><cite>autostart</cite> et <cite>autorestart</cite> permettent simplement de le lancer et de l’oublier:
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supervisor redémarera le processus automatiquement en cas d’arrêt impromptu.</p>
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<p>La première fois que vous lancez supervisor, passez lui le fichier de configuration:</p>
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<div class="highlight-python"><div class="highlight"><pre><span class="n">supervisord</span> <span class="o">-</span><span class="n">c</span> <span class="o">/</span><span class="n">chemin</span><span class="o">/</span><span class="n">vers</span><span class="o">/</span><span class="n">supervisor</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>Ensuite vous pouvez gérer les processus avec:</p>
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<div class="highlight-python"><div class="highlight"><pre><span class="n">supervisorctl</span> <span class="o">-</span><span class="n">c</span> <span class="o">/</span><span class="n">chemin</span><span class="o">/</span><span class="n">vers</span><span class="o">/</span><span class="n">supervisor</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>Cela va démarrer un shell depuis lequel vous pouvez faire un start/stop/restart
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sur le service.</p>
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<p>Toutes les erreurs seront logguées dans /tmp/zerobin.log.</p>
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<div class="admonition note">
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<p class="first admonition-title">Note</p>
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<p>Si vous avez installé zerobin dans un virtualenv, vous devriez définir la
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commande pour qu’elle s’éxécute depuis le virtualenv:</p>
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<div class="last highlight-python"><pre>command=/chemin/vers/le/virtualenv/bin/zerobin --port 80 --compressed-static</pre>
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