616 lines
No EOL
28 KiB
HTML
616 lines
No EOL
28 KiB
HTML
|
||
<!DOCTYPE html>
|
||
|
||
|
||
<html lang="fr" data-content_root="../" >
|
||
|
||
<head>
|
||
<meta charset="utf-8" />
|
||
<meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" />
|
||
|
||
<title>Services systemd — Documentation two 0.1.0</title>
|
||
|
||
|
||
|
||
<script data-cfasync="false">
|
||
document.documentElement.dataset.mode = localStorage.getItem("mode") || "";
|
||
document.documentElement.dataset.theme = localStorage.getItem("theme") || "";
|
||
</script>
|
||
<!--
|
||
this give us a css class that will be invisible only if js is disabled
|
||
-->
|
||
<noscript>
|
||
<style>
|
||
.pst-js-only { display: none !important; }
|
||
|
||
</style>
|
||
</noscript>
|
||
|
||
<!-- Loaded before other Sphinx assets -->
|
||
<link href="../_static/styles/theme.css?digest=8878045cc6db502f8baf" rel="stylesheet" />
|
||
<link href="../_static/styles/pydata-sphinx-theme.css?digest=8878045cc6db502f8baf" rel="stylesheet" />
|
||
|
||
<link rel="stylesheet" type="text/css" href="../_static/pygments.css?v=8f2a1f02" />
|
||
<link rel="stylesheet" type="text/css" href="../_static/styles/sphinx-book-theme.css?v=3c74b3bc" />
|
||
|
||
<!-- So that users can add custom icons -->
|
||
<script src="../_static/scripts/fontawesome.js?digest=8878045cc6db502f8baf"></script>
|
||
<!-- Pre-loaded scripts that we'll load fully later -->
|
||
<link rel="preload" as="script" href="../_static/scripts/bootstrap.js?digest=8878045cc6db502f8baf" />
|
||
<link rel="preload" as="script" href="../_static/scripts/pydata-sphinx-theme.js?digest=8878045cc6db502f8baf" />
|
||
|
||
<script src="../_static/documentation_options.js?v=4d0cb239"></script>
|
||
<script src="../_static/doctools.js?v=fd6eb6e6"></script>
|
||
<script src="../_static/sphinx_highlight.js?v=6ffebe34"></script>
|
||
<script src="../_static/scripts/sphinx-book-theme.js?v=fab101a9"></script>
|
||
<script src="../_static/translations.js?v=e6b791cb"></script>
|
||
<script>DOCUMENTATION_OPTIONS.pagename = 'exploitation/services';</script>
|
||
<link rel="index" title="Index" href="../genindex.html" />
|
||
<link rel="search" title="Recherche" href="../search.html" />
|
||
<link rel="next" title="API de l’agent" href="api-agent/index.html" />
|
||
<link rel="prev" title="Configuration" href="configuration.html" />
|
||
<meta name="viewport" content="width=device-width, initial-scale=1"/>
|
||
<meta name="docsearch:language" content="fr"/>
|
||
<meta name="docsearch:version" content="0.1" />
|
||
</head>
|
||
|
||
|
||
<body data-bs-spy="scroll" data-bs-target=".bd-toc-nav" data-offset="180" data-bs-root-margin="0px 0px -60%" data-default-mode="">
|
||
|
||
|
||
|
||
<div id="pst-skip-link" class="skip-link d-print-none"><a href="#main-content">Passer au contenu principal</a></div>
|
||
|
||
<div id="pst-scroll-pixel-helper"></div>
|
||
|
||
<button type="button" class="btn rounded-pill" id="pst-back-to-top">
|
||
<i class="fa-solid fa-arrow-up"></i>Haut de page</button>
|
||
|
||
|
||
<dialog id="pst-search-dialog">
|
||
|
||
<form class="bd-search d-flex align-items-center"
|
||
action="../search.html"
|
||
method="get">
|
||
<i class="fa-solid fa-magnifying-glass"></i>
|
||
<input type="search"
|
||
class="form-control"
|
||
name="q"
|
||
placeholder="Search..."
|
||
aria-label="Search..."
|
||
autocomplete="off"
|
||
autocorrect="off"
|
||
autocapitalize="off"
|
||
spellcheck="false"/>
|
||
<span class="search-button__kbd-shortcut"><kbd class="kbd-shortcut__modifier">Ctrl</kbd>+<kbd>K</kbd></span>
|
||
</form>
|
||
</dialog>
|
||
|
||
<div class="pst-async-banner-revealer d-none">
|
||
<aside id="bd-header-version-warning" class="d-none d-print-none" aria-label="Alerte de version"></aside>
|
||
</div>
|
||
|
||
|
||
<header class="bd-header navbar navbar-expand-lg bd-navbar d-print-none">
|
||
</header>
|
||
|
||
|
||
<div class="bd-container">
|
||
<div class="bd-container__inner bd-page-width">
|
||
|
||
|
||
|
||
<dialog id="pst-primary-sidebar-modal"></dialog>
|
||
<div id="pst-primary-sidebar" class="bd-sidebar-primary bd-sidebar">
|
||
|
||
|
||
|
||
<div class="sidebar-header-items sidebar-primary__section">
|
||
|
||
|
||
|
||
|
||
</div>
|
||
|
||
<div class="sidebar-primary-items__start sidebar-primary__section">
|
||
<div class="sidebar-primary-item">
|
||
|
||
|
||
|
||
|
||
|
||
<a class="navbar-brand logo" href="../index.html">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<p class="title logo__title">Documentation two 0.1.0</p>
|
||
|
||
</a></div>
|
||
<div class="sidebar-primary-item">
|
||
|
||
<button class="btn search-button-field search-button__button pst-js-only" title="Recherche" aria-label="Recherche" data-bs-placement="bottom" data-bs-toggle="tooltip">
|
||
<i class="fa-solid fa-magnifying-glass"></i>
|
||
<span class="search-button__default-text">Recherche</span>
|
||
<span class="search-button__kbd-shortcut"><kbd class="kbd-shortcut__modifier">Ctrl</kbd>+<kbd class="kbd-shortcut__modifier">K</kbd></span>
|
||
</button></div>
|
||
<div class="sidebar-primary-item"><nav class="bd-links bd-docs-nav" aria-label="Main">
|
||
<div class="bd-toc-item navbar-nav active">
|
||
|
||
<ul class="nav bd-sidenav bd-sidenav__home-link">
|
||
<li class="toctree-l1">
|
||
<a class="reference internal" href="../index.html">
|
||
two
|
||
</a>
|
||
</li>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">Mise en œuvre</span></p>
|
||
<ul class="nav bd-sidenav">
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../demarrage/index.html">Démarrage</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../demarrage/installation.html">Installation d’un hyperviseur</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../demarrage/premier-vpc.html">Premier VPC, premier subnet, première VM</a></li>
|
||
</ul>
|
||
</details></li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../deploiement/index.html">Déploiement d’un cluster</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../deploiement/architecture-cluster.html">Architecture du cluster</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../deploiement/image-qcow2.html">Construction de l’image qcow2</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../deploiement/routeurs.html">Routeurs</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../deploiement/premier-hyperviseur.html">Premier hyperviseur</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../deploiement/route-reflector.html">VM route reflector</a></li>
|
||
</ul>
|
||
</details></li>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">Exploitation</span></p>
|
||
<ul class="current nav bd-sidenav">
|
||
<li class="toctree-l1 current active has-children"><a class="reference internal" href="index.html">Exploitation</a><details open="open"><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul class="current">
|
||
<li class="toctree-l2"><a class="reference internal" href="configuration.html">Configuration</a></li>
|
||
<li class="toctree-l2 current active"><a class="current reference internal" href="#">Services systemd</a></li>
|
||
<li class="toctree-l2 has-children"><a class="reference internal" href="api-agent/index.html">API de l’agent</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
|
||
<li class="toctree-l3"><a class="reference internal" href="api-agent/asynchronisme.html">Modèle asynchrone et codes de retour</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="api-agent/reference.html">Référence</a></li>
|
||
</ul>
|
||
</details></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="observabilite.html">Observabilité</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="diagnostic.html">Diagnostic</a></li>
|
||
</ul>
|
||
</details></li>
|
||
</ul>
|
||
<p aria-level="2" class="caption" role="heading"><span class="caption-text">Interne</span></p>
|
||
<ul class="nav bd-sidenav">
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../concepts/index.html">Concepts</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../concepts/vpc-subnet-vm.html">VPC, subnet et VM</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../concepts/modes-reseau.html">Modes réseau</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../concepts/cycle-de-vie.html">Cycle de vie des ressources</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../concepts/metadata-cloud-init.html">Metadata et cloud-init</a></li>
|
||
</ul>
|
||
</details></li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../architecture/index.html">Architecture</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../architecture/vue-densemble.html">Vue d’ensemble</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../architecture/stockage.html">Schéma des clés</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../architecture/contraintes.html">Invariants et pièges</a></li>
|
||
</ul>
|
||
</details></li>
|
||
<li class="toctree-l1 has-children"><a class="reference internal" href="../versions/index.html">Versions</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../versions/0.2.0.html">Bael</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../versions/0.1.0.html">Michael</a></li>
|
||
</ul>
|
||
</details></li>
|
||
</ul>
|
||
|
||
</div>
|
||
</nav></div>
|
||
</div>
|
||
|
||
|
||
<div class="sidebar-primary-items__end sidebar-primary__section">
|
||
<div class="sidebar-primary-item">
|
||
<div id="ethical-ad-placement"
|
||
class="flat"
|
||
data-ea-publisher="readthedocs"
|
||
data-ea-type="readthedocs-sidebar"
|
||
data-ea-manual="true">
|
||
</div></div>
|
||
</div>
|
||
|
||
|
||
</div>
|
||
|
||
<main id="main-content" class="bd-main" role="main">
|
||
|
||
|
||
|
||
<div class="sbt-scroll-pixel-helper"></div>
|
||
|
||
<div class="bd-content">
|
||
<div class="bd-article-container">
|
||
|
||
<div class="bd-header-article d-print-none">
|
||
<div class="header-article-items header-article__inner">
|
||
|
||
<div class="header-article-items__start">
|
||
|
||
<div class="header-article-item"><button class="sidebar-toggle primary-toggle btn btn-sm" title="Toggle primary sidebar" data-bs-placement="bottom" data-bs-toggle="tooltip">
|
||
<span class="fa-solid fa-bars"></span>
|
||
</button></div>
|
||
|
||
</div>
|
||
|
||
|
||
<div class="header-article-items__end">
|
||
|
||
<div class="header-article-item">
|
||
|
||
<div class="article-header-buttons">
|
||
|
||
|
||
|
||
|
||
|
||
<div class="dropdown dropdown-download-buttons">
|
||
<button class="btn dropdown-toggle" type="button" data-bs-toggle="dropdown" aria-expanded="false" aria-label="Téléchargez cette page">
|
||
<i class="fas fa-download"></i>
|
||
</button>
|
||
<ul class="dropdown-menu">
|
||
|
||
|
||
|
||
<li><a href="../_sources/exploitation/services.rst" target="_blank"
|
||
class="btn btn-sm btn-download-source-button dropdown-item"
|
||
title="Télécharger le fichier source"
|
||
data-bs-placement="left" data-bs-toggle="tooltip"
|
||
>
|
||
|
||
|
||
<span class="btn__icon-container">
|
||
<i class="fas fa-file"></i>
|
||
</span>
|
||
<span class="btn__text-container">.rst</span>
|
||
</a>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
<li>
|
||
<button onclick="window.print()"
|
||
class="btn btn-sm btn-download-pdf-button dropdown-item"
|
||
title="Imprimer au format PDF"
|
||
data-bs-placement="left" data-bs-toggle="tooltip"
|
||
>
|
||
|
||
|
||
<span class="btn__icon-container">
|
||
<i class="fas fa-file-pdf"></i>
|
||
</span>
|
||
<span class="btn__text-container">.pdf</span>
|
||
</button>
|
||
</li>
|
||
|
||
</ul>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
<button onclick="toggleFullScreen()"
|
||
class="btn btn-sm btn-fullscreen-button pst-navbar-icon"
|
||
title="Mode plein écran"
|
||
data-bs-placement="bottom" data-bs-toggle="tooltip"
|
||
>
|
||
|
||
|
||
<span class="btn__icon-container">
|
||
<i class="fas fa-expand"></i>
|
||
</span>
|
||
|
||
</button>
|
||
|
||
|
||
|
||
<button class="btn btn-sm nav-link pst-navbar-icon theme-switch-button pst-js-only" aria-label="Thème" data-bs-title="Thème" data-bs-placement="bottom" data-bs-toggle="tooltip">
|
||
<i class="theme-switch fa-solid fa-sun fa-lg" data-mode="light" title="Clair"></i>
|
||
<i class="theme-switch fa-solid fa-moon fa-lg" data-mode="dark" title="Sombre"></i>
|
||
<i class="theme-switch fa-solid fa-circle-half-stroke fa-lg" data-mode="auto" title="Paramètres système"></i>
|
||
</button>
|
||
|
||
|
||
<button class="btn btn-sm pst-navbar-icon search-button search-button__button pst-js-only" title="Recherche" aria-label="Recherche" data-bs-placement="bottom" data-bs-toggle="tooltip">
|
||
<i class="fa-solid fa-magnifying-glass fa-lg"></i>
|
||
</button>
|
||
<button class="sidebar-toggle secondary-toggle btn btn-sm pst-navbar-icon" title="Toggle secondary sidebar" data-bs-placement="bottom" data-bs-toggle="tooltip">
|
||
<span class="fa-solid fa-list"></span>
|
||
</button>
|
||
</div></div>
|
||
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div id="jb-print-docs-body" class="onlyprint">
|
||
<h1>Services systemd</h1>
|
||
<!-- Table of contents -->
|
||
<div id="print-main-content">
|
||
<div id="jb-print-toc">
|
||
|
||
<div>
|
||
<h2> Contenu </h2>
|
||
</div>
|
||
<nav aria-label="Page">
|
||
<ul class="visible nav section-nav flex-column">
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#dnsmasq">dnsmasq</a></li>
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#serveur-dhcp-integre">Serveur DHCP intégré</a></li>
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#qemu-n-est-pas-une-unit">QEMU n’est pas une unit</a></li>
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#sockets-par-vm">Sockets par VM</a></li>
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#arret-de-l-agent">Arrêt de l’agent</a></li>
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#mise-a-jour">Mise à jour</a></li>
|
||
</ul>
|
||
</nav>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div id="searchbox"></div>
|
||
<article class="bd-article">
|
||
|
||
<section id="services-systemd">
|
||
<h1>Services systemd<a class="headerlink" href="#services-systemd" title="Lien vers cette rubrique">#</a></h1>
|
||
<p>Quatre units, installées sous <code class="docutils literal notranslate"><span class="pre">/opt/two/bin</span></code> par <code class="docutils literal notranslate"><span class="pre">deploy.sh</span></code>. Les deux units DHCP
|
||
s’excluent : celle qui tourne dépend de <code class="docutils literal notranslate"><span class="pre">dhcp.backend</span></code> (voir <a class="reference internal" href="configuration.html"><span class="doc">Configuration</span></a>).</p>
|
||
<div class="pst-scrollable-table-container"><table class="table">
|
||
<colgroup>
|
||
<col style="width: 28.0%" />
|
||
<col style="width: 32.0%" />
|
||
<col style="width: 40.0%" />
|
||
</colgroup>
|
||
<thead>
|
||
<tr class="row-odd"><th class="head"><p>Unit</p></th>
|
||
<th class="head"><p>Instance <code class="docutils literal notranslate"><span class="pre">%i</span></code></p></th>
|
||
<th class="head"><p>Rôle</p></th>
|
||
</tr>
|
||
</thead>
|
||
<tbody>
|
||
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">agent.service</span></code></p></td>
|
||
<td><p>—</p></td>
|
||
<td><p>processus principal : API, dispatcher, exécution, watchdog</p></td>
|
||
</tr>
|
||
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">dnsmasq@.service</span></code></p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre"><netns>_<bridge></span></code></p></td>
|
||
<td><p>dnsmasq lancé dans le netns du VPC, un par subnet — backend <code class="docutils literal notranslate"><span class="pre">dnsmasq</span></code></p></td>
|
||
</tr>
|
||
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">dhcp@.service</span></code></p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre"><netns>_<bridge></span></code></p></td>
|
||
<td><p>serveur DHCP intégré, un par subnet — backend <code class="docutils literal notranslate"><span class="pre">two</span></code></p></td>
|
||
</tr>
|
||
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">metadata@.service</span></code></p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre"><nom</span> <span class="pre">de</span> <span class="pre">la</span> <span class="pre">VM></span></code></p></td>
|
||
<td><p>serveur de metadata cloud-init, un par VM</p></td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
</div>
|
||
<p>Les instances sont créées et pilotées par l’agent au fil des créations de subnets et de VM : il
|
||
n’y a pas à les démarrer à la main en fonctionnement normal.</p>
|
||
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>systemctl<span class="w"> </span>status<span class="w"> </span>agent
|
||
systemctl<span class="w"> </span>status<span class="w"> </span><span class="s1">'dnsmasq@vp-admin_br-sn000001'</span><span class="w"> </span><span class="c1"># backend dnsmasq</span>
|
||
systemctl<span class="w"> </span>status<span class="w"> </span><span class="s1">'dhcp@vp-admin_br-sn000001'</span><span class="w"> </span><span class="c1"># backend two</span>
|
||
systemctl<span class="w"> </span>status<span class="w"> </span><span class="s1">'metadata@i-web'</span>
|
||
</pre></div>
|
||
</div>
|
||
<section id="dnsmasq">
|
||
<h2>dnsmasq<a class="headerlink" href="#dnsmasq" title="Lien vers cette rubrique">#</a></h2>
|
||
<p>Backend historique. Le script <code class="docutils literal notranslate"><span class="pre">run-dnsmasq-in-netns.sh</span></code> entre dans le netns puis exécute dnsmasq
|
||
avec un fichier de configuration par subnet, généré par l’agent :</p>
|
||
<div class="pst-scrollable-table-container"><table class="table">
|
||
<colgroup>
|
||
<col style="width: 40.0%" />
|
||
<col style="width: 60.0%" />
|
||
</colgroup>
|
||
<tbody>
|
||
<tr class="row-odd"><td><p>Configuration</p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">/etc/dnsmasq.d/<netns>_<bridge>.conf</span></code></p></td>
|
||
</tr>
|
||
<tr class="row-even"><td><p>Baux</p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">/run/dnsmasq-<netns>_<bridge>.leases</span></code></p></td>
|
||
</tr>
|
||
<tr class="row-odd"><td><p>Journal</p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">/var/log/dnsmasq-<netns>_<bridge>.log</span></code></p></td>
|
||
</tr>
|
||
<tr class="row-even"><td><p>PID</p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">/run/dnsmasq-<netns>_<bridge>.pid</span></code></p></td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
</div>
|
||
<p>Le fichier de baux et le journal sont les deux premiers endroits à regarder quand une VM n’obtient
|
||
pas d’adresse.</p>
|
||
</section>
|
||
<section id="serveur-dhcp-integre">
|
||
<h2>Serveur DHCP intégré<a class="headerlink" href="#serveur-dhcp-integre" title="Lien vers cette rubrique">#</a></h2>
|
||
<p>Backend <code class="docutils literal notranslate"><span class="pre">two</span></code>. Le script <code class="docutils literal notranslate"><span class="pre">run-dhcp-in-netns.sh</span></code> entre dans le netns puis exécute le binaire
|
||
<code class="docutils literal notranslate"><span class="pre">dhcp</span></code>, à qui il passe le bridge à servir et ses deux chemins de fichiers — il ne déduit rien et
|
||
ignore le netns dans lequel il tourne :</p>
|
||
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>/opt/two/bin/dhcp<span class="w"> </span>-conf<span class="w"> </span>/etc/two/agent.yml<span class="w"> </span><span class="se">\</span>
|
||
<span class="w"> </span>-interface<span class="w"> </span>br-sn000001<span class="w"> </span><span class="se">\</span>
|
||
<span class="w"> </span>-state<span class="w"> </span>/run/two/dhcp/vp-admin_br-sn000001.state<span class="w"> </span><span class="se">\</span>
|
||
<span class="w"> </span>-socket<span class="w"> </span>/run/two/dhcp/vp-admin_br-sn000001.sock
|
||
</pre></div>
|
||
</div>
|
||
<div class="pst-scrollable-table-container"><table class="table">
|
||
<colgroup>
|
||
<col style="width: 40.0%" />
|
||
<col style="width: 60.0%" />
|
||
</colgroup>
|
||
<tbody>
|
||
<tr class="row-odd"><td><p>Socket de contrôle</p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">/run/two/dhcp/<netns>_<bridge>.sock</span></code></p></td>
|
||
</tr>
|
||
<tr class="row-even"><td><p>État</p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">/run/two/dhcp/<netns>_<bridge>.state</span></code></p></td>
|
||
</tr>
|
||
<tr class="row-odd"><td><p>Journal</p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">journalctl</span> <span class="pre">-u</span> <span class="pre">'dhcp@<netns>_<bridge>'</span></code></p></td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
</div>
|
||
<p>Il n’y a <strong>ni fichier de configuration ni fichier de baux</strong>. L’agent pousse l’état désiré sur la
|
||
socket de contrôle : la configuration du subnet à sa création, une réservation par interface à
|
||
chaque création ou suppression de VM. Les réservations sont statiques — une MAC inconnue n’obtient
|
||
rien, et le serveur reste silencieux plutôt que de répondre par un refus.</p>
|
||
<p>Le fichier d’état <strong>appartient au processus</strong>, qui l’écrit et le relit à son démarrage. L’agent ne
|
||
l’écrit jamais ; il le supprime seulement, à la création du subnet pour écarter un résidu et à sa
|
||
suppression après avoir arrêté l’unit. Il vit dans <code class="docutils literal notranslate"><span class="pre">/run</span></code> parce qu’il n’a aucun sens sans le
|
||
netns, qui ne survit pas au redémarrage de l’host.</p>
|
||
<p>Diagnostic : voir <a class="reference internal" href="diagnostic.html"><span class="doc">Diagnostic</span></a>, qui montre comment interroger la socket.</p>
|
||
</section>
|
||
<section id="qemu-n-est-pas-une-unit">
|
||
<h2>QEMU n’est pas une unit<a class="headerlink" href="#qemu-n-est-pas-une-unit" title="Lien vers cette rubrique">#</a></h2>
|
||
<p>Les processus QEMU sont lancés par <code class="docutils literal notranslate"><span class="pre">systemd-run</span> <span class="pre">--scope</span></code>, <strong>jamais</strong> en unit transitoire. Un
|
||
scope est exécuté par le processus appelant et hérite donc du network namespace posé par
|
||
l’agent ; une unit transitoire, forkée par PID 1, démarrerait dans le netns racine et ne verrait
|
||
pas le tap de la VM.</p>
|
||
<p>Conséquence pratique : les VM n’apparaissent pas dans <code class="docutils literal notranslate"><span class="pre">systemctl</span> <span class="pre">list-units</span></code> mais dans
|
||
<code class="docutils literal notranslate"><span class="pre">systemd-cgls</span></code>, et elles ne survivent pas à un <code class="docutils literal notranslate"><span class="pre">systemctl</span> <span class="pre">stop</span> <span class="pre">agent</span></code> suivi d’un
|
||
redémarrage — l’agent ne réattache pas les VM existantes.</p>
|
||
</section>
|
||
<section id="sockets-par-vm">
|
||
<h2>Sockets par VM<a class="headerlink" href="#sockets-par-vm" title="Lien vers cette rubrique">#</a></h2>
|
||
<div class="highlight-text notranslate"><div class="highlight"><pre><span></span>/run/two/vms/serial/<vm>.sock console série
|
||
/run/two/vms/monitor/<vm>.sock monitor QEMU
|
||
/run/two/vms/qmp/<vm>.sock QMP (utilisé par l'agent)
|
||
</pre></div>
|
||
</div>
|
||
<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>socat<span class="w"> </span>-,raw,echo<span class="o">=</span><span class="m">0</span><span class="w"> </span>UNIX-CONNECT:/run/two/vms/serial/i-web.sock
|
||
</pre></div>
|
||
</div>
|
||
</section>
|
||
<section id="arret-de-l-agent">
|
||
<h2>Arrêt de l’agent<a class="headerlink" href="#arret-de-l-agent" title="Lien vers cette rubrique">#</a></h2>
|
||
<p>L’ordre d’arrêt est imposé : serveurs HTTP, puis drainage des workers, puis fermeture de la base.
|
||
Si le budget d’arrêt est dépassé, la base <strong>n’est pas fermée</strong> — fermer Badger sous un écrivain
|
||
concurrent est pire qu’un rejeu du journal au démarrage suivant. Un message à ce sujet dans le
|
||
journal au moment d’un <code class="docutils literal notranslate"><span class="pre">stop</span></code> n’est donc pas une anomalie.</p>
|
||
</section>
|
||
<section id="mise-a-jour">
|
||
<h2>Mise à jour<a class="headerlink" href="#mise-a-jour" title="Lien vers cette rubrique">#</a></h2>
|
||
<p><code class="docutils literal notranslate"><span class="pre">deploy.sh</span></code> relève les instances <code class="docutils literal notranslate"><span class="pre">dnsmasq@</span></code>, <code class="docutils literal notranslate"><span class="pre">dhcp@</span></code> et <code class="docutils literal notranslate"><span class="pre">metadata@</span></code> actives <strong>avant</strong> d’arrêter les
|
||
services, et les redémarre ensuite : c’est la seule façon de savoir lesquelles relancer. Arrêter
|
||
les services à la main avant de lancer le script fait perdre cette liste.</p>
|
||
</section>
|
||
</section>
|
||
|
||
|
||
</article>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<footer class="prev-next-footer d-print-none">
|
||
|
||
<div class="prev-next-area">
|
||
<a class="left-prev"
|
||
href="configuration.html"
|
||
title="page précédente">
|
||
<i class="fa-solid fa-angle-left"></i>
|
||
<div class="prev-next-info">
|
||
<p class="prev-next-subtitle">précédent</p>
|
||
<p class="prev-next-title">Configuration</p>
|
||
</div>
|
||
</a>
|
||
<a class="right-next"
|
||
href="api-agent/index.html"
|
||
title="page suivante">
|
||
<div class="prev-next-info">
|
||
<p class="prev-next-subtitle">suivant</p>
|
||
<p class="prev-next-title">API de l’agent</p>
|
||
</div>
|
||
<i class="fa-solid fa-angle-right"></i>
|
||
</a>
|
||
</div>
|
||
</footer>
|
||
|
||
</div>
|
||
|
||
|
||
|
||
<dialog id="pst-secondary-sidebar-modal"></dialog>
|
||
<div id="pst-secondary-sidebar" class="bd-sidebar-secondary bd-toc"><div class="sidebar-secondary-items sidebar-secondary__inner">
|
||
|
||
|
||
<div class="sidebar-secondary-item"><div
|
||
id="pst-page-navigation-heading-2"
|
||
class="page-toc tocsection onthispage">
|
||
<i class="fa-solid fa-list"></i> Contenu
|
||
</div>
|
||
<nav id="pst-page-toc-nav" class="page-toc" aria-labelledby="pst-page-navigation-heading-2">
|
||
<ul class="visible nav section-nav flex-column">
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#dnsmasq">dnsmasq</a></li>
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#serveur-dhcp-integre">Serveur DHCP intégré</a></li>
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#qemu-n-est-pas-une-unit">QEMU n’est pas une unit</a></li>
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#sockets-par-vm">Sockets par VM</a></li>
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#arret-de-l-agent">Arrêt de l’agent</a></li>
|
||
<li class="toc-h2 nav-item toc-entry"><a class="reference internal nav-link" href="#mise-a-jour">Mise à jour</a></li>
|
||
</ul>
|
||
</nav></div>
|
||
|
||
</div></div>
|
||
|
||
|
||
</div>
|
||
<footer class="bd-footer-content">
|
||
|
||
<div class="bd-footer-content__inner container">
|
||
|
||
<div class="footer-item">
|
||
|
||
<p class="component-author">
|
||
Par Nicolas Boufidjeline
|
||
</p>
|
||
|
||
</div>
|
||
|
||
<div class="footer-item">
|
||
|
||
|
||
<p class="copyright">
|
||
|
||
© Copyright 2026, Nicolas Boufidjeline.
|
||
<br/>
|
||
|
||
</p>
|
||
|
||
</div>
|
||
|
||
<div class="footer-item">
|
||
|
||
</div>
|
||
|
||
<div class="footer-item">
|
||
|
||
</div>
|
||
|
||
</div>
|
||
</footer>
|
||
|
||
|
||
</main>
|
||
</div>
|
||
</div>
|
||
|
||
<!-- Scripts loaded after <body> so the DOM is not blocked -->
|
||
<script defer src="../_static/scripts/bootstrap.js?digest=8878045cc6db502f8baf"></script>
|
||
<script defer src="../_static/scripts/pydata-sphinx-theme.js?digest=8878045cc6db502f8baf"></script>
|
||
|
||
<footer class="bd-footer">
|
||
</footer>
|
||
</body>
|
||
</html> |