{"id":65,"date":"2026-05-01T19:17:54","date_gmt":"2026-05-01T17:17:54","guid":{"rendered":"http:\/\/eryann.fr\/?p=65"},"modified":"2026-05-01T19:32:23","modified_gmt":"2026-05-01T17:32:23","slug":"fiche-lets-encrypt-apache2-et-renouvellement-automatique","status":"publish","type":"post","link":"https:\/\/eryann.fr\/index.php\/systeme\/fiche-lets-encrypt-apache2-et-renouvellement-automatique\/","title":{"rendered":"Fiche let&rsquo;s encrypt apache2 et renouvellement automatique"},"content":{"rendered":"\n<p>Dans un contexte BTS CIEL ou SIO, la mise en place d\u2019un certificat SSL ne s\u2019arr\u00eate pas \u00e0 son installation.<br>Un certificat Let\u2019s Encrypt a une dur\u00e9e de validit\u00e9 limit\u00e9e (90 jours), il est donc indispensable d\u2019assurer son renouvellement automatique pour \u00e9viter toute interruption de service.<\/p>\n\n\n\n<p>L\u2019objectif est de :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>comprendre le fonctionnement du renouvellement<\/li>\n\n\n\n<li>v\u00e9rifier l\u2019automatisation<\/li>\n\n\n\n<li>s\u00e9curiser le rechargement d\u2019Apache<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"683\" height=\"1024\" src=\"https:\/\/eryann.fr\/wp-content\/uploads\/2026\/05\/8caa519a-cf5f-4791-8b32-2d04439afb1f-683x1024.png\" alt=\"\" class=\"wp-image-71\" srcset=\"https:\/\/eryann.fr\/wp-content\/uploads\/2026\/05\/8caa519a-cf5f-4791-8b32-2d04439afb1f-683x1024.png 683w, https:\/\/eryann.fr\/wp-content\/uploads\/2026\/05\/8caa519a-cf5f-4791-8b32-2d04439afb1f-200x300.png 200w, https:\/\/eryann.fr\/wp-content\/uploads\/2026\/05\/8caa519a-cf5f-4791-8b32-2d04439afb1f-768x1152.png 768w, https:\/\/eryann.fr\/wp-content\/uploads\/2026\/05\/8caa519a-cf5f-4791-8b32-2d04439afb1f.png 1024w\" sizes=\"auto, (max-width: 683px) 100vw, 683px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Configuration compl\u00e8te <\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>#############################################<br># INSTALLATION CERTBOT<br>#############################################<br><br>apt update<br>apt install certbot python3-certbot-apache -y<br><br>#############################################<br># GENERATION CERTIFICAT<br>#############################################<br><br>certbot --apache -d monsite.fr -d www.monsite.fr<br><br>#############################################<br># VERIFICATION TIMER AUTOMATIQUE<br>#############################################<br><br>systemctl list-timers | grep certbot<br><br>#############################################<br># TEST RENOUVELLEMENT<br>#############################################<br><br>certbot renew --dry-run<br><br>#############################################<br># AJOUT D'UN HOOK (OPTION)<br>#############################################<br><br>nano \/etc\/letsencrypt\/cli.ini<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>deploy-hook = systemctl reload apache2<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>#############################################<br># VERIFICATION DU SERVICE<br>#############################################<br><br>systemctl status certbot.timer<br><br>#############################################<br># LOGS<br>#############################################<br><br>journalctl -u certbot<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Explication d\u00e9taill\u00e9e<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Fonctionnement<\/h3>\n\n\n\n<p>Certbot installe automatiquement un timer systemd qui ex\u00e9cute r\u00e9guli\u00e8rement :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>certbot renew<\/code><\/pre>\n\n\n\n<p>Cette commande :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>v\u00e9rifie la date d\u2019expiration<\/li>\n\n\n\n<li>renouvelle uniquement si n\u00e9cessaire<\/li>\n\n\n\n<li>\u00e9vite toute intervention manuelle<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Fr\u00e9quence<\/h3>\n\n\n\n<p>Le timer est ex\u00e9cut\u00e9 plusieurs fois par jour.<br>Le renouvellement est d\u00e9clench\u00e9 uniquement si le certificat expire bient\u00f4t (en g\u00e9n\u00e9ral moins de 30 jours).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Rechargement Apache<\/h3>\n\n\n\n<p>Apr\u00e8s renouvellement :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Apache doit relire les nouveaux certificats<\/li>\n\n\n\n<li>le plugin Apache le fait automatiquement<\/li>\n<\/ul>\n\n\n\n<p>Le hook permet de s\u00e9curiser ce comportement.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Test de fonctionnement<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>certbot renew --dry-run<\/code><\/pre>\n\n\n\n<p>Permet de simuler un renouvellement sans modifier les certificats.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00e9rification<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>systemctl list-timers<\/code><\/pre>\n\n\n\n<p>Affiche les t\u00e2ches planifi\u00e9es.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>journalctl -u certbot<\/code><\/pre>\n\n\n\n<p>Permet de consulter les logs.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Cas particuliers<\/h2>\n\n\n\n<p>Mode apache<br>Aucun arr\u00eat du service<br>Renouvellement transparent<\/p>\n\n\n\n<p>Mode standalone<br>N\u00e9cessite l\u2019arr\u00eat d\u2019Apache<br>Utilis\u00e9 uniquement dans certains cas<\/p>\n\n\n\n<p>Mode webroot<br>Apache reste actif<br>Validation via fichiers web<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Bonnes pratiques<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>v\u00e9rifier r\u00e9guli\u00e8rement le timer<\/li>\n\n\n\n<li>tester avec dry-run<\/li>\n\n\n\n<li>surveiller les logs<\/li>\n\n\n\n<li>s\u2019assurer que les ports 80 et 443 sont ouverts<\/li>\n\n\n\n<li>utiliser un hook pour garantir le reload<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Points cl\u00e9s<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>renouvellement automatique par d\u00e9faut<\/li>\n\n\n\n<li>aucune coupure de service<\/li>\n\n\n\n<li>Apache reste actif<\/li>\n\n\n\n<li>test indispensable avec dry-run<\/li>\n\n\n\n<li>logs \u00e0 surveiller<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Suite logique<\/h2>\n\n\n\n<p>Pour aller plus loin :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>supervision des certificats (alertes expiration)<\/li>\n\n\n\n<li>durcissement TLS Apache<\/li>\n\n\n\n<li>configuration HSTS<\/li>\n\n\n\n<li>reverse proxy s\u00e9curis\u00e9<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Dans un contexte BTS CIEL ou SIO, la mise en place d\u2019un certificat SSL ne s\u2019arr\u00eate pas \u00e0 son installation.Un certificat Let\u2019s Encrypt a une dur\u00e9e de validit\u00e9 limit\u00e9e (90 jours), il est donc indispensable d\u2019assurer son renouvellement automatique pour \u00e9viter toute interruption de service. L\u2019objectif est de : Configuration compl\u00e8te Explication d\u00e9taill\u00e9e Fonctionnement Certbot [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[5],"tags":[],"class_list":["post-65","post","type-post","status-publish","format-standard","hentry","category-systeme"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fiche let&#039;s encrypt apache2 et renouvellement automatique - Eryann Breizh SecOps<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/eryann.fr\/index.php\/systeme\/fiche-lets-encrypt-apache2-et-renouvellement-automatique\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fiche let&#039;s encrypt apache2 et renouvellement automatique - Eryann Breizh SecOps\" \/>\n<meta property=\"og:description\" content=\"Dans un contexte BTS CIEL ou SIO, la mise en place d\u2019un certificat SSL ne s\u2019arr\u00eate pas \u00e0 son installation.Un certificat Let\u2019s Encrypt a une dur\u00e9e de validit\u00e9 limit\u00e9e (90 jours), il est donc indispensable d\u2019assurer son renouvellement automatique pour \u00e9viter toute interruption de service. 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