{"id":119,"date":"2026-09-26T08:00:00","date_gmt":"2026-09-26T08:00:00","guid":{"rendered":"https:\/\/linuxbase.io\/?p=72"},"modified":"2026-08-10T23:46:13","modified_gmt":"2026-08-10T23:46:13","slug":"proxmox-ve-8-auf-9-upgrade","status":"publish","type":"post","link":"https:\/\/netguide.io\/linux\/de\/proxmox-ve-8-auf-9-upgrade\/","title":{"rendered":"Proxmox VE 8 auf 9 upgraden (Debian Trixie)"},"content":{"rendered":"<script type=\"text\/plain\" data-tcf=\"waiting-for-consent\" data-id=\"4797\" data-bid=\"2\" data-placement=\"4798\">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<\/script>\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/netguide.io\/linux\/de\/category\/proxmox\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Proxmox Category\">Proxmox<\/a> VE 9 bringt einen neuen Debian-Unterbau (Trixie) und einen frischen Kernel. Das Upgrade von Version 8 ist gut machbar \u2013 wenn du strukturiert vorgehst. In dieser Anleitung zeigen wir dir, wie du <strong><a href=\"https:\/\/netguide.io\/linux\/de\/category\/proxmox\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Proxmox Category\">Proxmox<\/a> VE 8 auf 9 upgradest<\/strong>: vorbereiten, pr\u00fcfen, Paketquellen umstellen und das Distributions-Upgrade durchf\u00fchren.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Das Upgrade von <strong>Proxmox VE 8 auf 9<\/strong> ist mehr als ein reines Versionssprung-Update: Mit dem Wechsel auf Debian 13 \u201eTrixie&#8221; kommen ein neuer Kernel, aktualisierte Pakete und Verbesserungen bei ZFS und dem Software-defined-Networking. Damit der Umstieg reibungslos l\u00e4uft, gehen wir nach den eigentlichen Schritten auch auf die Neuerungen, das Upgrade im Cluster und die wichtigen Aufr\u00e4umarbeiten danach ein.<\/p>\n\n\n\t\t\t\t<div class=\"wp-block-uagb-table-of-contents uagb-toc__align-left uagb-toc__columns-1  uagb-block-1ffd1ad5      \"\n\t\t\t\t\tdata-scroll= \"1\"\n\t\t\t\t\tdata-offset= \"30\"\n\t\t\t\t\tstyle=\"\"\n\t\t\t\t>\n\t\t\t\t<div class=\"uagb-toc__wrap\">\n\t\t\t\t\t\t<div class=\"uagb-toc__title\">\n\t\t\t\t\t\t\tInhaltsverzeichnis\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"uagb-toc__list-wrap \">\n\t\t\t\t\t\t<ol class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#vorbereitung-backups-zuerst\" class=\"uagb-toc-link__trigger\">Vorbereitung: Backups zuerst!<\/a><li class=\"uagb-toc__list\"><a href=\"#schritt-1-proxmox-ve-8-aktualisieren\" class=\"uagb-toc-link__trigger\">Schritt 1: Proxmox VE 8 aktualisieren<\/a><li class=\"uagb-toc__list\"><a href=\"#schritt-2-den-upgrade-check-ausf\u00fchren\" class=\"uagb-toc-link__trigger\">Schritt 2: Den Upgrade-Check ausf\u00fchren<\/a><li class=\"uagb-toc__list\"><a href=\"#schritt-3-paketquellen-auf-trixie-umstellen\" class=\"uagb-toc-link__trigger\">Schritt 3: Paketquellen auf Trixie umstellen<\/a><li class=\"uagb-toc__list\"><a href=\"#schritt-4-das-distributions-upgrade-durchf\u00fchren\" class=\"uagb-toc-link__trigger\">Schritt 4: Das Distributions-Upgrade durchf\u00fchren<\/a><li class=\"uagb-toc__list\"><a href=\"#schritt-5-neustart-und-kontrolle\" class=\"uagb-toc-link__trigger\">Schritt 5: Neustart und Kontrolle<\/a><li class=\"uagb-toc__list\"><a href=\"#was-ist-neu-in-proxmox-ve-9\" class=\"uagb-toc-link__trigger\">Was ist neu in Proxmox VE 9?<\/a><li class=\"uagb-toc__list\"><a href=\"#cluster-richtig-upgraden\" class=\"uagb-toc-link__trigger\">Cluster richtig upgraden<\/a><li class=\"uagb-toc__list\"><a href=\"#nach-dem-upgrade-aufr\u00e4umen-und-kontrollieren\" class=\"uagb-toc-link__trigger\">Nach dem Upgrade: Aufr\u00e4umen und kontrollieren<\/a><li class=\"uagb-toc__list\"><a href=\"#h\u00e4ufige-fragen\" class=\"uagb-toc-link__trigger\">H\u00e4ufige Fragen<\/a><li class=\"uagb-toc__list\"><a href=\"#wie-lange-dauert-das-upgrade-und-gibt-es-downtime\" class=\"uagb-toc-link__trigger\">Wie lange dauert das Upgrade und gibt es Downtime?<\/a><li class=\"uagb-toc__list\"><a href=\"#kann-ich-das-upgrade-r\u00fcckg\u00e4ngig-machen\" class=\"uagb-toc-link__trigger\">Kann ich das Upgrade r\u00fcckg\u00e4ngig machen?<\/a><li class=\"uagb-toc__list\"><a href=\"#was-passiert-mit-dem-no-subscription-repository\" class=\"uagb-toc-link__trigger\">Was passiert mit dem No-Subscription-Repository?<\/a><li class=\"uagb-toc__list\"><a href=\"#fazit\" class=\"uagb-toc-link__trigger\">Fazit<\/a><\/ol>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Vorbereitung: Backups zuerst!<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ein Distributions-Upgrade ist ein tiefer Eingriff. <strong>Sichere vorher unbedingt alle VMs und Container<\/strong> \u2013 wie das geht, zeigt <a href=\"https:\/\/netguide.io\/linux\/de\/proxmox-backup-einrichten-vzdump\/\">Proxmox Backup einrichten<\/a>. Plane au\u00dferdem ein Wartungsfenster ein, da der Server neu startet.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Schritt 1: Proxmox VE 8 aktualisieren<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Bring dein System zun\u00e4chst auf den letzten Stand von Version 8, damit du von einer sauberen Basis startest:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#24292e\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>apt update\napt dist-upgrade<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #B392F0\">apt<\/span><span style=\"color: #9ECBFF\"> update<\/span><\/span>\n<span class=\"line\"><span style=\"color: #B392F0\">apt<\/span><span style=\"color: #9ECBFF\"> dist-upgrade<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Schritt 2: Den Upgrade-Check ausf\u00fchren<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Proxmox liefert ein Pr\u00fcfwerkzeug mit, das dein System auf m\u00f6gliche Probleme untersucht. F\u00fchre es aus und arbeite alle Warnungen ab, bevor du weitermachst:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#24292e\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>pve8to9 --full<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #B392F0\">pve8to9<\/span><span style=\"color: #79B8FF\"> --full<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Der Check meldet z. B. veraltete Einstellungen oder zu wenig freien Speicher. Nimm seine Hinweise ernst \u2013 sie ersparen dir b\u00f6se \u00dcberraschungen.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Schritt 3: Paketquellen auf Trixie umstellen<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Jetzt stellst du die APT-Quellen von Debian Bookworm auf Trixie um. Passe die Debian-Quelle sowie die Proxmox-Repositories an:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#24292e\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly># Debian-Basis\nsed -i \"s\/bookworm\/trixie\/g\" \/etc\/apt\/sources.list\n\n# Proxmox No-Subscription-Repository\necho \"deb http:\/\/download.proxmox.com\/debian\/pve trixie pve-no-subscription\" &gt; \/etc\/apt\/sources.list.d\/pve-install-repo.list<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #6A737D\"># Debian-Basis<\/span><\/span>\n<span class=\"line\"><span style=\"color: #B392F0\">sed<\/span><span style=\"color: #79B8FF\"> -i<\/span><span style=\"color: #9ECBFF\"> \"s\/bookworm\/trixie\/g\"<\/span><span style=\"color: #9ECBFF\"> \/etc\/apt\/sources.list<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #6A737D\"># Proxmox No-Subscription-Repository<\/span><\/span>\n<span class=\"line\"><span style=\"color: #79B8FF\">echo<\/span><span style=\"color: #9ECBFF\"> \"deb http:\/\/download.proxmox.com\/debian\/pve trixie pve-no-subscription\"<\/span><span style=\"color: #F97583\"> ><\/span><span style=\"color: #9ECBFF\"> \/etc\/apt\/sources.list.d\/pve-install-repo.list<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Nutzt du das Enterprise-Repository, passt du stattdessen dessen Datei an. Grundlagen dazu findest du unter <a href=\"https:\/\/netguide.io\/linux\/de\/proxmox-community-repository-installieren-und-no-subscription-benachrichtigung-entfernen\/\">Community-Repository installieren<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Schritt 4: Das Distributions-Upgrade durchf\u00fchren<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lade die neuen Paketlisten und starte das eigentliche Upgrade:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#24292e\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>apt update\napt dist-upgrade<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #B392F0\">apt<\/span><span style=\"color: #9ECBFF\"> update<\/span><\/span>\n<span class=\"line\"><span style=\"color: #B392F0\">apt<\/span><span style=\"color: #9ECBFF\"> dist-upgrade<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Der Vorgang l\u00e4dt viele Pakete und dauert einige Minuten. Etwaige R\u00fcckfragen zu ge\u00e4nderten Konfigurationsdateien beantwortest du im Zweifel mit dem Beibehalten deiner aktuellen Version.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Schritt 5: Neustart und Kontrolle<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Starte den Server nach dem Upgrade neu und pr\u00fcfe anschlie\u00dfend die Version:<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#24292e\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"54\" height=\"14\" viewBox=\"0 0 54 14\"><g fill=\"none\" fill-rule=\"evenodd\" transform=\"translate(1 1)\"><circle cx=\"6\" cy=\"6\" r=\"6\" fill=\"#FF5F56\" stroke=\"#E0443E\" stroke-width=\".5\"><\/circle><circle cx=\"26\" cy=\"6\" r=\"6\" fill=\"#FFBD2E\" stroke=\"#DEA123\" stroke-width=\".5\"><\/circle><circle cx=\"46\" cy=\"6\" r=\"6\" fill=\"#27C93F\" stroke=\"#1AAB29\" stroke-width=\".5\"><\/circle><\/g><\/svg><\/span><span role=\"button\" tabindex=\"0\" style=\"color:#e1e4e8;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>reboot\n# nach dem Neustart:\npveversion<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-dark\" style=\"background-color: #24292e\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #B392F0\">reboot<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6A737D\"># nach dem Neustart:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #B392F0\">pveversion<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Zeigt <code>pveversion<\/code> nun 9.x an und starten deine VMs und Container normal, ist das Upgrade gegl\u00fcckt.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Was ist neu in Proxmox VE 9?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Bevor du das Upgrade startest, lohnt ein Blick auf die wichtigsten Neuerungen. Proxmox VE 9 basiert auf Debian 13 \u201eTrixie&#8221; und bringt einen deutlich moderneren Kernel mit, der aktuelle Hardware besser unterst\u00fctzt. Auch bei Storage und Netzwerk hat sich einiges getan.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Debian 13 \u201eTrixie&#8221;<\/strong> als neuer Unterbau mit aktuellem Kernel<\/li>\n\n<li><strong>Verbessertes ZFS<\/strong> mit neueren OpenZFS-Versionen<\/li>\n\n<li><strong>Software-defined Networking<\/strong> mit mehr Funktionen in der Weboberfl\u00e4che<\/li>\n\n<li><strong>Aktualisierter QEMU\/KVM-Stack<\/strong> f\u00fcr bessere VM-Performance<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Pr\u00fcfe vor dem Upgrade in der Hardware-Kompatibilit\u00e4t, ob es f\u00fcr deine Netzwerk- oder Storage-Controller bekannte Probleme mit dem neuen Kernel gibt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ein weiterer Punkt betrifft die Paketquellen: Proxmox VE 9 setzt auf das neue deb822-Format f\u00fcr Repository-Definitionen unter <code>\/etc\/apt\/sources.list.d\/<\/code>. Der Upgrade-Prozess wandelt viele Eintr\u00e4ge automatisch um, dennoch solltest du deine <a href=\"https:\/\/netguide.io\/linux\/de\/proxmox-storage-typen-erklaert\/\">Storage-Konfiguration<\/a> und eventuelle Fremd-Repositories vorher dokumentieren. Notiere dir au\u00dferdem deine aktuelle Netzwerkkonfiguration, denn bei Kernel-Spr\u00fcngen k\u00f6nnen sich in seltenen F\u00e4llen Interface-Namen \u00e4ndern.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Cluster richtig upgraden<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Betreibst du mehrere Proxmox-Knoten im Cluster, gehst du besonders sorgf\u00e4ltig vor. Der wichtigste Grundsatz: Upgrade immer Knoten f\u00fcr Knoten, niemals alle gleichzeitig. So bleibt das Quorum erhalten und deine VMs laufen weiter. Verschiebe die virtuellen Maschinen eines Knotens vor dessen Upgrade per Live-Migration auf einen anderen Host.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vor dem Start ein vollst\u00e4ndiges <a href=\"https:\/\/netguide.io\/linux\/de\/proxmox-backup-einrichten-vzdump\/\">vzdump-Backup<\/a> aller VMs anlegen<\/li>\n\n<li>VMs per Live-Migration vom zu aktualisierenden Knoten wegr\u00e4umen<\/li>\n\n<li>Einen Knoten nach dem anderen upgraden und neu starten<\/li>\n\n<li>Nach jedem Knoten Quorum und Cluster-Status mit <code>pvecm status<\/code> pr\u00fcfen<\/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\">Nach dem Upgrade: Aufr\u00e4umen und kontrollieren<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ist das Distributions-Upgrade durch, sind ein paar Kontrollen sinnvoll. Pr\u00fcfe mit <code>pveversion<\/code>, ob wirklich Version 9 aktiv ist, und kontrolliere die Paketquellen: Alte Verweise auf \u201ebookworm&#8221; d\u00fcrfen nicht mehr auftauchen. Wenn du das kostenlose No-Subscription-Repository nutzt, stelle sicher, dass es auf Trixie zeigt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nicht mehr ben\u00f6tigte alte Kernel-Pakete kannst du anschlie\u00dfend entfernen, um Platz auf der Boot-Partition freizugeben. Weitere Details dazu findest du in der Anleitung zum <a href=\"https:\/\/netguide.io\/linux\/de\/proxmox-kernel-andern\/\">Proxmox-Kernel \u00e4ndern<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Zum Abschluss lohnt ein Funktionstest quer durch dein System: Starten alle VMs und Container wieder sauber? Sind die Netzwerkbr\u00fccken aktiv und die Storages eingebunden? L\u00e4uft die Weboberfl\u00e4che ohne Zertifikatswarnungen? Erst wenn diese Punkte stimmen, ist das Upgrade wirklich abgeschlossen. R\u00e4ume danach mit <code>apt autoremove<\/code> verwaiste Pakete auf und pr\u00fcfe mit <code>journalctl -p 3 -b<\/code>, ob seit dem Neustart schwerwiegende Fehler protokolliert wurden.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">H\u00e4ufige Fragen<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">Wie lange dauert das Upgrade und gibt es Downtime?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Auf einem einzelnen Server musst du mit einer Downtime der VMs w\u00e4hrend des Neustarts rechnen, das eigentliche Upgrade dauert je nach Internet- und Festplattengeschwindigkeit meist 15 bis 45 Minuten. In einem Cluster l\u00e4sst sich die Ausfallzeit durch Live-Migration nahezu vermeiden.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Kann ich das Upgrade r\u00fcckg\u00e4ngig machen?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Einen echten Rollback gibt es bei einem Distributions-Upgrade nicht. Deshalb ist ein vollst\u00e4ndiges Backup vor dem Start Pflicht. Im Fehlerfall spielst du das System aus dem Backup zur\u00fcck oder setzt es sauber neu auf.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Was passiert mit dem No-Subscription-Repository?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Das <a href=\"https:\/\/netguide.io\/linux\/de\/proxmox-community-repository-installieren-und-no-subscription-benachrichtigung-entfernen\/\">No-Subscription-Repository<\/a> musst du beim Upgrade manuell von \u201ebookworm&#8221; auf \u201etrixie&#8221; umstellen, sonst schl\u00e4gt das Distributions-Upgrade fehl oder zieht keine neuen Pakete. Kontrolliere die Eintr\u00e4ge unter <code>\/etc\/apt\/sources.list.d\/<\/code>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Fazit<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Das Upgrade von Proxmox VE 8 auf 9 gelingt zuverl\u00e4ssig, wenn du die Reihenfolge einh\u00e4ltst: Backup, <code>pve8to9<\/code>-Check, Quellen auf Trixie umstellen, <code>dist-upgrade<\/code>, Neustart. Nimm dir Zeit f\u00fcr die Pr\u00fcfschritte, dann bist du schnell auf dem aktuellen Stand. Weitere Grundlagen findest du unter <a href=\"https:\/\/netguide.io\/linux\/de\/proxmox-kernel-andern\/\">Proxmox Kernel \u00e4ndern<\/a> und <a href=\"https:\/\/netguide.io\/linux\/de\/proxmox-storage-typen-erklaert\/\">Proxmox Storage-Typen<\/a>.<\/p>\n<script type=\"text\/plain\" data-tcf=\"waiting-for-consent\" data-id=\"4799\" data-bid=\"2\" 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[9,27],"tags":[],"class_list":["post-119","post","type-post","status-publish","format-standard","hentry","category-linux","category-proxmox"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"Tobias","author_link":"https:\/\/netguide.io\/linux\/author\/tobias-pries\/"},"uagb_comment_info":0,"uagb_excerpt":"Proxmox VE 8 auf 9 upgraden: mit pve8to9 pr\u00fcfen, die Paketquellen auf Debian Trixie umstellen und das Distributions-Upgrade sicher durchf\u00fchren.","brizy_media":[],"_links":{"self":[{"href":"https:\/\/netguide.io\/linux\/wp-json\/wp\/v2\/posts\/119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/netguide.io\/linux\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/netguide.io\/linux\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/netguide.io\/linux\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/netguide.io\/linux\/wp-json\/wp\/v2\/comments?post=119"}],"version-history":[{"count":3,"href":"https:\/\/netguide.io\/linux\/wp-json\/wp\/v2\/posts\/119\/revisions"}],"predecessor-version":[{"id":4992,"href":"https:\/\/netguide.io\/linux\/wp-json\/wp\/v2\/posts\/119\/revisions\/4992"}],"wp:attachment":[{"href":"https:\/\/netguide.io\/linux\/wp-json\/wp\/v2\/media?parent=119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/netguide.io\/linux\/wp-json\/wp\/v2\/categories?post=119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/netguide.io\/linux\/wp-json\/wp\/v2\/tags?post=119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}