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<p class="apache">Serveur HTTP Apache Version 2.4</p>
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<div id="preamble"><h1>Module Apache mod_heartbeat</h1>
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<p><span>Langues Disponibles: </span><a href="../en/mod/mod_heartbeat.html" hreflang="en" rel="alternate" title="English">&nbsp;en&nbsp;</a> |
<a href="../fr/mod/mod_heartbeat.html" title="Fran&ccedil;ais">&nbsp;fr&nbsp;</a></p>
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Envoie des messages d'&eacute;tat au mandataire frontal</td></tr>
<tr><th><a href="module-dict.html#Status">Statut:</a></th><td>Exp&eacute;rimental</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">Identificateur&nbsp;de&nbsp;Module:</a></th><td>heartbeat_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">Fichier&nbsp;Source:</a></th><td>mod_heartbeat</td></tr>
<tr><th><a href="module-dict.html#Compatibility">Compatibilit&eacute;:</a></th><td>Disponible &agrave; partir de la version 2.3
du serveur HTTP Apache</td></tr></table>
<h3>Sommaire</h3>

    <p><code class="module"><a href="../mod/mod_heartbeat.html">mod_heartbeat</a></code> envoie &agrave; un moniteur
    <code class="module"><a href="../mod/mod_heartmonitor.html">mod_heartmonitor</a></code> des messages multicast l'informant
    du nombre de connexions courantes. En g&eacute;n&eacute;ral,
    <code class="module"><a href="../mod/mod_heartmonitor.html">mod_heartmonitor</a></code> est charg&eacute; sur un serveur
    mandataire o&ugrave; <code class="module"><a href="../mod/mod_lbmethod_heartbeat.html">mod_lbmethod_heartbeat</a></code> est charg&eacute;, ce
    qui permet d'utiliser la <em>lbmethod</em> "heartbeat" au sein des
    directives <code class="directive"><a href="../mod/mod_proxy.html#proxypass">ProxyPass</a></code>.</p>

    <p>
    Le module <code class="module"><a href="../mod/mod_heartbeat.html">mod_heartbeat</a></code> est charg&eacute; sur le
    serveur d'origine qui sert les requ&ecirc;tes via le
    serveur mandataire.
</p>

    <div class="warning">
        Pour utiliser <code class="module"><a href="../mod/mod_heartbeat.html">mod_heartbeat</a></code>,
	<code class="module"><a href="../mod/mod_status.html">mod_status</a></code> et <code class="module"><a href="../mod/mod_watchdog.html">mod_watchdog</a></code>
	doivent &ecirc;tre soit des modules statiques, soit des modules
	dynamiques, et dans ce dernier cas, ils doivent &ecirc;tre charg&eacute;s
	avant <code class="module"><a href="../mod/mod_heartbeat.html">mod_heartbeat</a></code>.
    </div>

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<div id="quickview"><h3>Sujets</h3>
<ul id="topics">
<li><img alt="" src="../images/down.gif"> <a href="#consuming">Utilisation de la sortie de mod_heartbeat</a></li>
</ul><h3 class="directives">Directives</h3>
<ul id="toc">
<li><img alt="" src="../images/down.gif"> <a href="#heartbeataddress">HeartbeatAddress</a></li>
</ul>
<h3>Traitement des bugs</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">Journal des modifications de httpd</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&amp;list_id=144532&amp;product=Apache%20httpd-2&amp;query_format=specific&amp;order=changeddate%20DESC%2Cpriority%2Cbug_severity&amp;component=mod_heartbeat">Probl&egrave;mes connus</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&amp;component=mod_heartbeat">Signaler un bug</a></li></ul></div>
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<div class="section">
<h2 id="consuming">Utilisation de la sortie de mod_heartbeat <a title="Lien permanent" href="#consuming" class="permalink">&para;</a></h2>
    
  <p>
      Chaque seconde, ce module g&eacute;n&egrave;re un paquet multicast UDP contenant
      le nombre de threads/processus occup&eacute;s et en attente. Le paquet
      poss&egrave;de un format ASCII simple similaire aux param&egrave;tres de requ&ecirc;te
      GET en HTTP.
  </p>

<div class="example"><h3>Exemple de paquet</h3><p><code>
v=1&amp;ready=75&amp;busy=0
</code></p></div>

  <p>
    Les utilisateurs disposeront dans le futur de nouvelles variables en
    plus de busy et ready, et toujours s&eacute;par&eacute;es par des '&amp;'.
  </p>

</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif"></a></div>
<div class="directive-section"><h2 id="heartbeataddress">Directive <span id="HeartbeatAddress">HeartbeatAddress</span> <a title="Lien permanent" href="#heartbeataddress" class="permalink">&para;</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Adresse multicast &agrave; laquelle envoyer les requ&ecirc;tes
heartbeat</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntaxe:</a></th><td><code>HeartbeatAddress <var>addr:port</var></code></td></tr>
<tr><th><a href="directive-dict.html#Default">D&eacute;faut:</a></th><td><code>disabled</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Contexte:</a></th><td>configuration globale</td></tr>
<tr><th><a href="directive-dict.html#Status">Statut:</a></th><td>Exp&eacute;rimental</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_heartbeat</td></tr>
</table>
    <p>La directive <code class="directive">HeartbeatAddress</code> permet de
    sp&eacute;cifier l'adresse multicast &agrave; laquelle <code class="module"><a href="../mod/mod_heartbeat.html">mod_heartbeat</a></code> va
    envoyer ses informations. En g&eacute;n&eacute;ral, cette adresse correspond &agrave; la
    valeur d&eacute;finie par la directive  <code class="directive"><a href="../mod/mod_heartmonitor.html#heartbeatlisten">HeartbeatListen</a></code> sur le serveur
    mandataire frontal.</p>
    <pre class="prettyprint lang-config">HeartbeatAddress 239.0.0.1:27999</pre>


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