{"id":9414,"date":"2026-08-05T15:00:05","date_gmt":"2026-08-05T08:00:05","guid":{"rendered":"https:\/\/longvan.net\/cong-dong\/?p=9414"},"modified":"2026-08-05T16:21:55","modified_gmt":"2026-08-05T09:21:55","slug":"huong-dan-su-dung-qemu-agent-de-reset-passwd-vm-linux-tren-proxmox-ve","status":"publish","type":"post","link":"https:\/\/longvan.net\/cong-dong\/huong-dan-su-dung-qemu-agent-de-reset-passwd-vm-linux-tren-proxmox-ve\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng Qemu agent \u0111\u1ec3 reset passwd VM linux tr\u00ean Proxmox VE"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Khi qu\u1ea3n tr\u1ecb c\u00e1c m\u00e1y \u1ea3o (VM) ch\u1ea1y h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux tr\u00ean n\u1ec1n t\u1ea3ng Proxmox VE, vi\u1ec7c qu\u00ean m\u1eadt kh\u1ea9u \u0111\u0103ng nh\u1eadp l\u00e0 s\u1ef1 c\u1ed1 kh\u00e1 ph\u1ed5 bi\u1ebfn, nh\u1ea5t l\u00e0 v\u1edbi c\u00e1c VM \u00edt khi truy c\u1eadp tr\u1ef1c ti\u1ebfp. Thay v\u00ec ph\u1ea3i kh\u1edfi \u0111\u1ed9ng v\u00e0o ch\u1ebf \u0111\u1ed9 Single-user Mode hay g\u1eafn ISO c\u1ee9u h\u1ed9 (Rescue ISO), n\u1ebfu VM \u0111\u00e3 c\u00e0i \u0111\u1eb7t <strong>QEMU Guest Agent<\/strong>, Qu\u00fd kh\u00e1ch c\u00f3 th\u1ec3 \u0111\u1eb7t l\u1ea1i m\u1eadt kh\u1ea9u ngay t\u1eeb Node Proxmox m\u00e0 <strong>kh\u00f4ng c\u1ea7n kh\u1edfi \u0111\u1ed9ng l\u1ea1i VM<\/strong>. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 h\u01b0\u1edbng d\u1eabn chi ti\u1ebft t\u1eeb Long V\u00e2n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">I. \u0110i\u1ec1u ki\u1ec7n c\u1ea7n c\u00f3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n, Qu\u00fd kh\u00e1ch c\u1ea7n \u0111\u1ea3m b\u1ea3o VM \u0111\u00e1p \u1ee9ng \u0111\u1ee7 c\u00e1c \u0111i\u1ec1u ki\u1ec7n sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>VM \u0111\u00e3 b\u1eadt t\u00f9y ch\u1ecdn <strong>QEMU Guest Agent<\/strong> trong c\u1ea5u h\u00ecnh (Options) tr\u00ean Proxmox.<\/li>\n\n\n\n<li>B\u00ean trong VM Linux \u0111\u00e3 c\u00e0i \u0111\u1eb7t g\u00f3i <code>qemu-guest-agent<\/code> v\u00e0 d\u1ecbch v\u1ee5 \u0111ang ch\u1ea1y.<\/li>\n\n\n\n<li>VM \u0111ang \u1edf tr\u1ea1ng th\u00e1i <strong>\u0111ang ch\u1ea1y (running)<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">II. Ki\u1ec3m tra VM \u0111\u00e3 s\u1eb5n s\u00e0ng hay ch\u01b0a<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\">B\u01b0\u1edbc 1: Ki\u1ec3m tra t\u00f9y ch\u1ecdn Guest Agent tr\u00ean Proxmox<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00fd kh\u00e1ch v\u00e0o giao di\u1ec7n Proxmox VE, ch\u1ecdn VM c\u1ea7n x\u1eed l\u00fd &gt; <strong>Options<\/strong> &gt; ki\u1ec3m tra d\u00f2ng <strong>QEMU Guest Agent<\/strong>. N\u1ebfu \u0111ang \u1edf tr\u1ea1ng th\u00e1i <strong>Disabled<\/strong>, Qu\u00fd kh\u00e1ch nh\u1ea5p \u0111\u00fap \u0111\u1ec3 chuy\u1ec3n sang <strong>Enabled<\/strong>, sau \u0111\u00f3 kh\u1edfi \u0111\u1ed9ng l\u1ea1i VM m\u1ed9t l\u1ea7n \u0111\u1ec3 c\u1ea5u h\u00ecnh c\u00f3 hi\u1ec7u l\u1ef1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00fd kh\u00e1ch c\u0169ng c\u00f3 th\u1ec3 ki\u1ec3m tra nhanh b\u1eb1ng l\u1ec7nh sau tr\u00ean Node Proxmox (qua SSH):\\<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"603\" height=\"350\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_68.png\" alt=\"\" class=\"wp-image-9420\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_68.png 603w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_68-300x174.png 300w\" sizes=\"auto, (max-width: 603px) 100vw, 603px\" \/><\/figure>\n<\/div>\n\n\n<pre class=\"wp-block-code\"><code>qm agent &lt;VMID&gt; ping<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"263\" height=\"42\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_67.png\" alt=\"\" class=\"wp-image-9419\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu l\u1ec7nh kh\u00f4ng tr\u1ea3 v\u1ec1 l\u1ed7i, Guest Agent \u0111ang ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">B\u01b0\u1edbc 2: Ki\u1ec3m tra d\u1ecbch v\u1ee5 qemu-guest-agent b\u00ean trong VM Linux<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Qu\u00fd kh\u00e1ch \u0111\u0103ng nh\u1eadp v\u00e0o VM (qua Console ho\u1eb7c SSH n\u1ebfu c\u00f2n t\u00e0i kho\u1ea3n kh\u00e1c truy c\u1eadp \u0111\u01b0\u1ee3c) v\u00e0 ki\u1ec3m tra:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>systemctl status qemu-guest-agent<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"491\" height=\"262\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_69.png\" alt=\"\" class=\"wp-image-9421\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_69.png 491w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_69-300x160.png 300w\" sizes=\"auto, (max-width: 491px) 100vw, 491px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu ch\u01b0a c\u00e0i \u0111\u1eb7t qu\u00fd kh\u00e1ch c\u00f3 th\u1ec3 l\u00e0m theo h\u01b0\u1edbng d\u1eabn n\u00e0y : H\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t Qemu agent tr\u00ean VM ubuntu trong Proxmox VE<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">III. H\u01b0\u1edbng d\u1eabn Reset Password<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 1.<\/strong> \u0110\u0103ng nh\u1eadp giao di\u1ec7n Proxmox VE, ch\u1ecdn node ch\u1ee9a VM Linux qu\u00fd kh\u00e1ch c\u1ea7n reset m\u1eadt kh\u1ea9u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 2.<\/strong> V\u00e0o m\u1ee5c <strong>Shell<\/strong> trong danh s\u00e1ch c\u00f4ng c\u1ee5 qu\u1ea3n tr\u1ecb c\u1ee7a VM.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"790\" height=\"348\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_65.png\" alt=\"\" class=\"wp-image-9415\" srcset=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_65.png 790w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_65-300x132.png 300w, https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_65-768x338.png 768w\" sizes=\"auto, (max-width: 790px) 100vw, 790px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 3.<\/strong> Qu\u00fd kh\u00e1ch ch\u1ea1y l\u1ec7nh :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>qm guest passwd &lt;VM_ID&gt; &lt;username&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 4.<\/strong> Nh\u1ea5n <strong>Enter<\/strong>. N\u1ebfu kh\u00f4ng c\u00f3 th\u00f4ng b\u00e1o l\u1ed7i, m\u1eadt kh\u1ea9u \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u1ea1i th\u00e0nh c\u00f4ng.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"256\" height=\"67\" src=\"https:\/\/longvan.net\/cong-dong\/wp-content\/uploads\/2026\/08\/Screenshot_66.png\" alt=\"\" class=\"wp-image-9416\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">IV. L\u01b0u \u00fd quan tr\u1ecdng<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u00e2y l\u00e0 c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 qu\u1ea3n tr\u1ecb h\u1ee3p l\u1ec7 d\u00e0nh cho ch\u1ee7 s\u1edf h\u1eefu VM, Qu\u00fd kh\u00e1ch kh\u00f4ng n\u00ean d\u00f9ng \u0111\u1ec3 truy c\u1eadp v\u00e0o c\u00e1c m\u00e1y \u1ea3o kh\u00f4ng thu\u1ed9c quy\u1ec1n qu\u1ea3n l\u00fd c\u1ee7a m\u00ecnh.<\/li>\n\n\n\n<li>Qu\u00fd kh\u00e1ch n\u00ean \u0111\u1eb7t m\u1eadt kh\u1ea9u m\u1edbi \u0111\u1ee7 m\u1ea1nh v\u00e0 \u0111\u1ed5i l\u1ea1i ngay sau khi \u0111\u0103ng nh\u1eadp th\u00e0nh c\u00f4ng l\u1ea7n \u0111\u1ea7u.<\/li>\n\n\n\n<li>V\u1edbi c\u00e1c m\u00e1y ch\u1ee7 \u1ea3o \u0111ang v\u1eadn h\u00e0nh d\u1ecbch v\u1ee5 quan tr\u1ecdng t\u1ea1i Long V\u00e2n, Qu\u00fd kh\u00e1ch n\u00ean t\u1ea1o Snapshot tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n thao t\u00e1c can thi\u1ec7p h\u1ec7 th\u1ed1ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n, d\u1ec5 d\u00e0ng kh\u00f4i ph\u1ee5c n\u1ebfu ph\u00e1t sinh s\u1ef1 c\u1ed1 ngo\u00e0i \u00fd mu\u1ed1n.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u01b0 v\u1eady, Long V\u00e2n \u0111\u00e3 ho\u00e0n th\u00e0nh h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng QEMU Guest Agent \u0111\u1ec3 reset password VM Linux tr\u00ean Proxmox VE. Ch\u00fac Qu\u00fd kh\u00e1ch th\u00e0nh c\u00f4ng!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Khi qu\u1ea3n tr\u1ecb c\u00e1c m\u00e1y \u1ea3o (VM) ch\u1ea1y h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux tr\u00ean n\u1ec1n t\u1ea3ng Proxmox VE, vi\u1ec7c qu\u00ean m\u1eadt kh\u1ea9u \u0111\u0103ng nh\u1eadp l\u00e0 s\u1ef1 c\u1ed1 kh\u00e1 ph\u1ed5 bi\u1ebfn, nh\u1ea5t l\u00e0 v\u1edbi c\u00e1c VM \u00edt khi truy c\u1eadp tr\u1ef1c ti\u1ebfp. Thay v\u00ec ph\u1ea3i kh\u1edfi \u0111\u1ed9ng v\u00e0o ch\u1ebf \u0111\u1ed9 Single-user Mode hay g\u1eafn ISO c\u1ee9u h\u1ed9 [&hellip;]<\/p>\n","protected":false},"author":31,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_oasis_is_in_workflow":0,"_oasis_original":0,"footnotes":""},"categories":[244],"tags":[54,5,465,466,471,468,169],"class_list":["post-9414","post","type-post","status-publish","format-standard","hentry","category-hci-cluster","tag-huong-dan","tag-linux","tag-proxmox","tag-proxmox-ve","tag-qemu","tag-qemu-guest-agent","tag-reset-password"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng Qemu agent \u0111\u1ec3 reset passwd VM linux tr\u00ean Proxmox VE - Long V\u00e2n<\/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:\/\/longvan.net\/cong-dong\/huong-dan-su-dung-qemu-agent-de-reset-passwd-vm-linux-tren-proxmox-ve\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng Qemu agent \u0111\u1ec3 reset passwd VM linux tr\u00ean Proxmox VE - Long V\u00e2n\" \/>\n<meta property=\"og:description\" content=\"Khi qu\u1ea3n tr\u1ecb c\u00e1c m\u00e1y \u1ea3o (VM) ch\u1ea1y h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux tr\u00ean n\u1ec1n t\u1ea3ng Proxmox VE, vi\u1ec7c qu\u00ean m\u1eadt kh\u1ea9u \u0111\u0103ng nh\u1eadp l\u00e0 s\u1ef1 c\u1ed1 kh\u00e1 ph\u1ed5 bi\u1ebfn, nh\u1ea5t l\u00e0 v\u1edbi c\u00e1c VM \u00edt khi truy c\u1eadp tr\u1ef1c ti\u1ebfp. 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