{"id":31390,"date":"2025-07-04T11:00:40","date_gmt":"2025-07-04T04:00:40","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=31390"},"modified":"2025-07-04T11:00:40","modified_gmt":"2025-07-04T04:00:40","slug":"cai-lai-he-dieu-hanh-cho-vps","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/","title":{"rendered":"H\u01b0\u1edbng D\u1eabn C\u00e0i L\u1ea1i H\u1ec7 \u0110i\u1ec1u H\u00e0nh Cho VPS An To\u00e0n, \u0110\u01a1n Gi\u1ea3n"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Khi-nao-ban-thuc-su-can-cai-lai-he-dieu-hanh-VPS\" >Khi n\u00e0o b\u1ea1n th\u1ef1c s\u1ef1 c\u1ea7n c\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh VPS?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Canh-bao-quan-trong-Hay-sao-luu-du-lieu-truoc\" >C\u1ea3nh b\u00e1o quan tr\u1ecdng: H\u00e3y sao l\u01b0u d\u1eef li\u1ec7u tr\u01b0\u1edbc!<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Phuong-phap-1-Sao-luu-thu-cong\" >Ph\u01b0\u01a1ng ph\u00e1p 1: Sao l\u01b0u th\u1ee7 c\u00f4ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Phuong-phap-2-Su-dung-Snapshot\" >Ph\u01b0\u01a1ng ph\u00e1p 2: S\u1eed d\u1ee5ng Snapshot<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Huong-dan-cai-lai-he-dieu-hanh-VPS-tai-InterData\" >H\u01b0\u1edbng d\u1eabn c\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh VPS t\u1ea1i InterData<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Buoc-1-Dang-nhap-vao-trang-quan-tri-dich-vu\" >B\u01b0\u1edbc 1: \u0110\u0103ng nh\u1eadp v\u00e0o trang qu\u1ea3n tr\u1ecb d\u1ecbch v\u1ee5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Buoc-2-Tim-chuc-nang-Reinstall\" >B\u01b0\u1edbc 2: T\u00ecm ch\u1ee9c n\u0103ng Reinstall<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Buoc-3-Chon-he-dieu-hanh-va-phien-ban\" >B\u01b0\u1edbc 3: Ch\u1ecdn h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 phi\u00ean b\u1ea3n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Buoc-4-Xac-nhan-reinstall-va-cho-doi\" >B\u01b0\u1edbc 4: X\u00e1c nh\u1eadn reinstall v\u00e0 ch\u1edd \u0111\u1ee3i<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Checklist-10-viec-can-lam-ngay-sau-khi-cai-lai-VPS\" >Checklist 10 vi\u1ec7c c\u1ea7n l\u00e0m ngay sau khi c\u00e0i l\u1ea1i VPS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Mot-so-cau-hoi-thuong-gap-FAQ\" >M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Cai-lai-OS-co-lam-thay-doi-dia-chi-IP-khong\" >C\u00e0i l\u1ea1i OS c\u00f3 l\u00e0m thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP kh\u00f4ng?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Toi-khong-ket-noi-SSH-duoc-sau-khi-cai-lai-phai-lam-sao\" >T\u00f4i kh\u00f4ng k\u1ebft n\u1ed1i SSH \u0111\u01b0\u1ee3c sau khi c\u00e0i l\u1ea1i, ph\u1ea3i l\u00e0m sao?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/cai-lai-he-dieu-hanh-cho-vps\/#Co-cach-nao-cai-lai-Windows-cho-VPS-Linux-khong\" >C\u00f3 c\u00e1ch n\u00e0o c\u00e0i l\u1ea1i Windows cho VPS Linux kh\u00f4ng?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>Vi\u1ec7c c\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh cho <a href=\"https:\/\/interdata.vn\/blog\/vps-la-gi\/\">VPS<\/a> l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p m\u1ea1nh m\u1ebd gi\u00fap b\u1ea1n kh\u1eafc ph\u1ee5c c\u00e1c s\u1ef1 c\u1ed1 nghi\u00eam tr\u1ecdng, t\u1ed1i \u01b0u hi\u1ec7u n\u0103ng ho\u1eb7c thi\u1ebft l\u1eadp m\u1ed9t m\u00f4i tr\u01b0\u1eddng ho\u00e0n to\u00e0n m\u1edbi. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd cung c\u1ea5p m\u1ed9t quy tr\u00ecnh to\u00e0n di\u1ec7n, t\u1eeb vi\u1ec7c x\u00e1c \u0111\u1ecbnh khi n\u00e0o c\u1ea7n c\u00e0i l\u1ea1i, h\u01b0\u1edbng d\u1eabn sao l\u01b0u d\u1eef li\u1ec7u an to\u00e0n, c\u00e1c b\u01b0\u1edbc th\u1ef1c hi\u1ec7n chi ti\u1ebft v\u00e0 checklist quan tr\u1ecdng sau khi c\u00e0i \u0111\u1eb7t xong.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Cai-lai-he-dieu-hanh-VPS.jpg\" alt=\"C\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh VPS\" width=\"600\" height=\"400\" class=\"aligncenter size-full wp-image-31398\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Cai-lai-he-dieu-hanh-VPS.jpg 600w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Cai-lai-he-dieu-hanh-VPS-300x200.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Khi-nao-ban-thuc-su-can-cai-lai-he-dieu-hanh-VPS\"><\/span>Khi n\u00e0o b\u1ea1n th\u1ef1c s\u1ef1 c\u1ea7n c\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh VPS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Quy\u1ebft \u0111\u1ecbnh c\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh l\u00e0 m\u1ed9t b\u01b0\u1edbc \u0111i l\u1edbn, nh\u01b0ng ho\u00e0n to\u00e0n \u0111\u00fang \u0111\u1eafn trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p. B\u1ea1n \u0111\u00e3 \u0111\u01b0a ra l\u1ef1a ch\u1ecdn ch\u00ednh x\u00e1c n\u1ebfu VPS c\u1ee7a m\u00ecnh \u0111ang \u0111\u1ed1i m\u1eb7t v\u1edbi m\u1ed9t trong c\u00e1c k\u1ecbch b\u1ea3n sau \u0111\u00e2y. \u0110\u00e2y l\u00e0 nh\u1eefng d\u1ea5u hi\u1ec7u cho th\u1ea5y vi\u1ec7c t\u1ed1i \u01b0u th\u00f4ng th\u01b0\u1eddng kh\u00f4ng c\u00f2n hi\u1ec7u qu\u1ea3 v\u00e0 c\u1ea7n m\u1ed9t gi\u1ea3i ph\u00e1p tri\u1ec7t \u0111\u1ec3.<\/p>\n<ul>\n<li><strong>L\u1ed7i h\u1ec7 th\u1ed1ng nghi\u00eam tr\u1ecdng:<\/strong> VPS kh\u00f4ng th\u1ec3 kh\u1edfi \u0111\u1ed9ng, kh\u00f4ng th\u1ec3 truy c\u1eadp qua SSH, ho\u1eb7c c\u00e1c d\u1ecbch v\u1ee5 c\u1ed1t l\u00f5i li\u00ean t\u1ee5c g\u1eb7p s\u1ef1 c\u1ed1 m\u00e0 kh\u00f4ng th\u1ec3 s\u1eeda ch\u1eefa. \u0110\u00e2y l\u00e0 l\u00fac vi\u1ec7c c\u00e0i l\u1ea1i gi\u00fap \u0111\u01b0a m\u1ecdi th\u1ee9 v\u1ec1 tr\u1ea1ng th\u00e1i \u1ed5n \u0111\u1ecbnh ban \u0111\u1ea7u.<\/li>\n<li><strong>Hi\u1ec7u n\u0103ng suy gi\u1ea3m \u0111\u1ed9t ng\u1ed9t:<\/strong> D\u00f9 \u0111\u00e3 \u00e1p d\u1ee5ng c\u00e1c bi\u1ec7n ph\u00e1p t\u1ed1i \u01b0u VPS, m\u00e1y ch\u1ee7 v\u1eabn ho\u1ea1t \u0111\u1ed9ng c\u1ef1c k\u1ef3 ch\u1eadm ch\u1ea1p. Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 do c\u00e1c file r\u00e1c, ti\u1ebfn tr\u00ecnh l\u1ed7i ho\u1eb7c xung \u0111\u1ed9t ph\u1ea7n m\u1ec1m t\u00edch t\u1ee5 theo th\u1eddi gian.<\/li>\n<li><strong>Nghi ng\u1edd b\u1ecb t\u1ea5n c\u00f4ng ho\u1eb7c nhi\u1ec5m m\u00e3 \u0111\u1ed9c:<\/strong> N\u1ebfu b\u1ea1n ph\u00e1t hi\u1ec7n c\u00e1c file l\u1ea1, ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng b\u1ea5t th\u01b0\u1eddng ho\u1eb7c nh\u1eadn \u0111\u01b0\u1ee3c c\u1ea3nh b\u00e1o b\u1ea3o m\u1eadt, c\u00e0i l\u1ea1i OS l\u00e0 c\u00e1ch ch\u1eafc ch\u1eafn nh\u1ea5t \u0111\u1ec3 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n c\u00e1c m\u1ed1i \u0111e d\u1ecda ti\u1ec1m \u1ea9n.<\/li>\n<li><strong>Thi\u1ebft l\u1eadp m\u1ed9t m\u00f4i tr\u01b0\u1eddng m\u1edbi:<\/strong> Khi b\u1ea1n mu\u1ed1n b\u1eaft \u0111\u1ea7u m\u1ed9t d\u1ef1 \u00e1n m\u1edbi, vi\u1ec7c c\u00f3 m\u1ed9t server &#8220;s\u1ea1ch&#8221; l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. C\u00e0i l\u1ea1i OS \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 c\u1ea5u h\u00ecnh hay ph\u1ea7n m\u1ec1m c\u0169 n\u00e0o g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>N\u00e2ng c\u1ea5p ho\u1eb7c thay \u0111\u1ed5i h\u1ec7 \u0111i\u1ec1u h\u00e0nh:<\/strong> B\u1ea1n mu\u1ed1n chuy\u1ec3n t\u1eeb CentOS 7 \u0111\u00e3 c\u0169 sang Ubuntu 22.04 \u0111\u1ec3 t\u1eadn d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi. Vi\u1ec7c c\u00e0i l\u1ea1i tr\u1ef1c ti\u1ebfp s\u1ebd hi\u1ec7u qu\u1ea3 v\u00e0 \u1ed5n \u0111\u1ecbnh h\u01a1n so v\u1edbi vi\u1ec7c n\u00e2ng c\u1ea5p th\u1ee7 c\u00f4ng ph\u1ee9c t\u1ea1p.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Cai-lai-he-dieu-hanh-VPS-01.jpg\" alt=\"C\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh VPS\" width=\"600\" height=\"400\" class=\"aligncenter size-full wp-image-31397\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Cai-lai-he-dieu-hanh-VPS-01.jpg 600w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Cai-lai-he-dieu-hanh-VPS-01-300x200.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Canh-bao-quan-trong-Hay-sao-luu-du-lieu-truoc\"><\/span>C\u1ea3nh b\u00e1o quan tr\u1ecdng: H\u00e3y sao l\u01b0u d\u1eef li\u1ec7u tr\u01b0\u1edbc!<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u00e2y l\u00e0 b\u01b0\u1edbc kh\u00f4ng th\u1ec3 b\u1ecf qua. Vi\u1ec7c c\u00e0i \u0111\u1eb7t l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh s\u1ebd <strong>X\u00d3A S\u1ea0CH TO\u00c0N B\u1ed8 D\u1eee LI\u1ec6U<\/strong> tr\u00ean VPS c\u1ee7a b\u1ea1n, bao g\u1ed3m <a href=\"https:\/\/interdata.vn\/blog\/source-code-la-gi\/\">m\u00e3 ngu\u1ed3n<\/a>, c\u01a1 s\u1edf d\u1eef li\u1ec7u, h\u00ecnh \u1ea3nh v\u00e0 m\u1ecdi file c\u1ea5u h\u00ecnh. Kh\u00f4ng c\u00f3 m\u1ed9t b\u1ea3n sao l\u01b0u \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c b\u1ea1n s\u1ebd m\u1ea5t t\u1ea5t c\u1ea3 v\u0129nh vi\u1ec5n.<\/p>\n<p>Nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng lo l\u1eafng v\u1ec1 vi\u1ec7c c\u00e0i l\u1ea1i VPS c\u00f3 m\u1ea5t d\u1eef li\u1ec7u kh\u00f4ng, v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi lu\u00f4n l\u00e0 <strong>C\u00d3<\/strong>. V\u00ec v\u1eady, h\u00e3y d\u00e0nh th\u1eddi gian th\u1ef1c hi\u1ec7n vi\u1ec7c sao l\u01b0u m\u1ed9t c\u00e1ch c\u1ea9n th\u1eadn. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 hai ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn v\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t m\u00e0 InterData khuy\u1ebfn ngh\u1ecb b\u1ea1n n\u00ean \u00e1p d\u1ee5ng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Phuong-phap-1-Sao-luu-thu-cong\"><\/span>Ph\u01b0\u01a1ng ph\u00e1p 1: Sao l\u01b0u th\u1ee7 c\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y cho ph\u00e9p b\u1ea1n ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c nh\u1eefng d\u1eef li\u1ec7u n\u00e0o c\u1ea7n \u0111\u01b0\u1ee3c l\u01b0u l\u1ea1i. \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t n\u1ebfu b\u1ea1n ch\u1ec9 mu\u1ed1n sao l\u01b0u m\u1ed9t v\u00e0i website ho\u1eb7c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 tr\u00ean VPS. Qu\u00e1 tr\u00ecnh n\u00e0y g\u1ed3m hai ph\u1ea7n ch\u00ednh: sao l\u01b0u m\u00e3 ngu\u1ed3n v\u00e0 sao l\u01b0u c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n<p>\u0110\u1ec3 sao l\u01b0u m\u00e3 ngu\u1ed3n, b\u1ea1n c\u00f3 th\u1ec3 n\u00e9n to\u00e0n b\u1ed9 th\u01b0 m\u1ee5c ch\u1ee9a website th\u00e0nh m\u1ed9t file duy nh\u1ea5t b\u1eb1ng l\u1ec7nh <code>tar<\/code>. V\u00ed d\u1ee5, \u0111\u1ec3 n\u00e9n th\u01b0 m\u1ee5c <code>\/var\/www\/html<\/code> th\u00e0nh file <code>backup-source.tar.gz<\/code>: <code>tar -czvf backup-source.tar.gz \/var\/www\/html<\/code><\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u MySQL\/MariaDB, l\u1ec7nh <code>mysqldump<\/code> l\u00e0 c\u00f4ng c\u1ee5 ti\u00eau chu\u1ea9n. L\u1ec7nh n\u00e0y s\u1ebd xu\u1ea5t to\u00e0n b\u1ed9 database c\u1ee7a b\u1ea1n ra m\u1ed9t file <code>.sql<\/code>. V\u00ed d\u1ee5: <code>mysqldump -u [username] -p [database_name] &gt; backup-db.sql<\/code><\/p>\n<p>Sau khi c\u00f3 hai file backup n\u00e0y, b\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng m\u1ed9t c\u00f4ng c\u1ee5 nh\u01b0 FileZilla ho\u1eb7c l\u1ec7nh <code>scp<\/code> \u0111\u1ec3 t\u1ea3i ch\u00fang v\u1ec1 m\u00e1y t\u00ednh c\u00e1 nh\u00e2n c\u1ee7a m\u00ecnh.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Phuong-phap-2-Su-dung-Snapshot\"><\/span>Ph\u01b0\u01a1ng ph\u00e1p 2: S\u1eed d\u1ee5ng Snapshot<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Snapshot (\u1ea3nh ch\u1ee5p nhanh) l\u00e0 t\u00ednh n\u0103ng m\u1ea1nh m\u1ebd nh\u1ea5t \u0111\u1ec3 sao l\u01b0u VPS. \u0110\u00e2y l\u00e0 m\u1ed9t b\u1ea3n ghi &#8220;\u1ea3nh ch\u1ee5p&#8221; to\u00e0n b\u1ed9 tr\u1ea1ng th\u00e1i c\u1ee7a m\u00e1y ch\u1ee7 t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m, bao g\u1ed3m t\u1ea5t c\u1ea3 c\u00e1c file, c\u1ea5u h\u00ecnh v\u00e0 d\u1eef li\u1ec7u. \u0110\u00e2y l\u00e0 c\u00e1ch an to\u00e0n v\u00e0 nhanh ch\u00f3ng nh\u1ea5t v\u00ec n\u00f3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng b\u1ecf s\u00f3t b\u1ea5t c\u1ee9 th\u1ee9 g\u00ec.<\/p>\n<p>H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 cung c\u1ea5p uy t\u00edn nh\u01b0 InterData, Vultr, hay DigitalOcean \u0111\u1ec1u cung c\u1ea5p t\u00ednh n\u0103ng n\u00e0y. B\u1ea1n ch\u1ec9 c\u1ea7n truy c\u1eadp v\u00e0o trang qu\u1ea3n tr\u1ecb VPS, t\u00ecm \u0111\u1ebfn m\u1ee5c &#8220;Snapshot&#8221; ho\u1eb7c &#8220;Backups&#8221; v\u00e0 nh\u1ea5p v\u00e0o n\u00fat &#8220;T\u1ea1o Snapshot&#8221;. Qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng di\u1ec5n ra r\u1ea5t nhanh v\u00e0 b\u1ea1n s\u1ebd c\u00f3 m\u1ed9t \u0111i\u1ec3m kh\u00f4i ph\u1ee5c an to\u00e0n tuy\u1ec7t \u0111\u1ed1i.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Huong-dan-cai-lai-he-dieu-hanh-VPS-tai-InterData\"><\/span>H\u01b0\u1edbng d\u1eabn c\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh VPS t\u1ea1i InterData<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Quy tr\u00ecnh c\u00e0i l\u1ea1i OS t\u1ea1i InterData r\u1ea5t tr\u1ef1c quan v\u00e0 \u0111\u01a1n gi\u1ea3n, c\u00e1c b\u01b0\u1edbc n\u00e0y c\u0169ng c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng t\u01b0\u01a1ng t\u1ef1 cho nhi\u1ec1u nh\u00e0 cung c\u1ea5p kh\u00e1c. Ch\u00fang t\u00f4i s\u1ebd tr\u00ecnh b\u00e0y quy tr\u00ecnh t\u1ed5ng qu\u00e1t g\u1ed3m 4 b\u01b0\u1edbc, k\u00e8m theo c\u00e1c l\u01b0u \u00fd \u0111\u1ec3 b\u1ea1n d\u1ec5 d\u00e0ng th\u1ef1c hi\u1ec7n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Buoc-1-Dang-nhap-vao-trang-quan-tri-dich-vu\"><\/span>B\u01b0\u1edbc 1: \u0110\u0103ng nh\u1eadp v\u00e0o trang qu\u1ea3n tr\u1ecb d\u1ecbch v\u1ee5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ea7u ti\u00ean, b\u1ea1n c\u1ea7n truy c\u1eadp v\u00e0o c\u1ed5ng th\u00f4ng tin kh\u00e1ch h\u00e0ng c\u1ee7a InterData t\u1ea1i \u0111\u1ecba ch\u1ec9 <code>support.interdata.vn<\/code>. L\u01b0u \u00fd r\u1eb1ng \u0111\u00e2y l\u00e0 thao t\u00e1c tr\u00ean giao di\u1ec7n web, b\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i SSH v\u00e0o server \u1edf b\u01b0\u1edbc n\u00e0y. T\u1ea1i \u0111\u00e2y, b\u1ea1n c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd t\u1ea5t c\u1ea3 c\u00e1c d\u1ecbch v\u1ee5 c\u1ee7a m\u00ecnh, bao g\u1ed3m c\u1ea3 VPS.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Buoc-2-Tim-chuc-nang-Reinstall\"><\/span>B\u01b0\u1edbc 2: T\u00ecm ch\u1ee9c n\u0103ng Reinstall<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sau khi \u0111\u0103ng nh\u1eadp v\u00e0 ch\u1ecdn d\u1ecbch v\u1ee5 VPS c\u1ea7n thao t\u00e1c, h\u00e3y t\u00ecm \u0111\u1ebfn m\u1ee5c qu\u1ea3n l\u00fd. T\u00f9y v\u00e0o giao di\u1ec7n c\u1ee7a nh\u00e0 cung c\u1ea5p, ch\u1ee9c n\u0103ng n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 &#8220;Reinstall OS&#8221;, &#8220;Install&#8221;, ho\u1eb7c &#8220;Rebuild VPS&#8221;. T\u1ea1i InterData, b\u1ea1n s\u1ebd d\u1ec5 d\u00e0ng t\u00ecm th\u1ea5y n\u00fat &#8220;Install&#8221; trong b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n ch\u00ednh c\u1ee7a VPS.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData.png\" alt=\"H\u01b0\u1edbng d\u1eabn c\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh VPS InterData\" width=\"1122\" height=\"910\" class=\"aligncenter size-full wp-image-31400\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData.png 1122w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData-300x243.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData-1024x831.png 1024w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData-768x623.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData-750x608.png 750w\" sizes=\"auto, (max-width: 1122px) 100vw, 1122px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Buoc-3-Chon-he-dieu-hanh-va-phien-ban\"><\/span>B\u01b0\u1edbc 3: Ch\u1ecdn h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 phi\u00ean b\u1ea3n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Giao di\u1ec7n s\u1ebd hi\u1ec3n th\u1ecb m\u1ed9t danh s\u00e1ch c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u00f3 s\u1eb5n \u0111\u1ec3 c\u00e0i \u0111\u1eb7t. B\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn gi\u1eefa c\u00e1c b\u1ea3n ph\u00e2n ph\u1ed1i Linux ph\u1ed5 bi\u1ebfn ho\u1eb7c c\u00e1c phi\u00ean b\u1ea3n Windows Server.<\/p>\n<p><strong>L\u1eddi khuy\u00ean:<\/strong> n\u1ebfu b\u1ea1n \u0111ang x\u00e2y d\u1ef1ng m\u1ed9t website hi\u1ec7n \u0111\u1ea1i, <strong>Ubuntu 22.04 LTS<\/strong> l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi. \u0110\u00e2y l\u00e0 phi\u00ean b\u1ea3n c\u00f3 th\u1eddi gian h\u1ed7 tr\u1ee3 d\u00e0i h\u1ea1n, c\u1ed9ng \u0111\u1ed3ng ng\u01b0\u1eddi d\u00f9ng \u0111\u00f4ng \u0111\u1ea3o v\u00e0 hi\u1ec7u n\u0103ng r\u1ea5t \u1ed5n \u0111\u1ecbnh.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Buoc-4-Xac-nhan-reinstall-va-cho-doi\"><\/span>B\u01b0\u1edbc 4: X\u00e1c nh\u1eadn reinstall v\u00e0 ch\u1edd \u0111\u1ee3i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sau khi \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c h\u1ec7 \u0111i\u1ec1u h\u00e0nh \u01b0ng \u00fd, h\u00e3y nh\u1ea5p v\u00e0o n\u00fat &#8220;Reinstall&#8221; \u0111\u1ec3 x\u00e1c nh\u1eadn. H\u1ec7 th\u1ed1ng s\u1ebd hi\u1ec3n th\u1ecb m\u1ed9t c\u1ea3nh b\u00e1o cu\u1ed1i c\u00f9ng v\u1ec1 vi\u1ec7c d\u1eef li\u1ec7u s\u1ebd b\u1ecb x\u00f3a. Sau khi b\u1ea1n \u0111\u1ed3ng \u00fd, qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t s\u1ebd t\u1ef1 \u0111\u1ed9ng b\u1eaft \u0111\u1ea7u.<\/p>\n<p>Qu\u00e1 tr\u00ecnh n\u00e0y th\u01b0\u1eddng m\u1ea5t kho\u1ea3ng 5-15 ph\u00fat. Sau khi ho\u00e0n t\u1ea5t, th\u00f4ng tin \u0111\u0103ng nh\u1eadp m\u1edbi, bao g\u1ed3m \u0111\u1ecba ch\u1ec9 IP (th\u01b0\u1eddng kh\u00f4ng \u0111\u1ed5i) v\u00e0 m\u1eadt kh\u1ea9u <code>root<\/code> m\u1edbi, s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u00ean giao di\u1ec7n ho\u1eb7c g\u1eedi \u0111\u1ebfn email c\u1ee7a b\u1ea1n.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData-01.png\" alt=\"H\u01b0\u1edbng d\u1eabn c\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh VPS InterData\" width=\"1103\" height=\"817\" class=\"aligncenter size-full wp-image-31399\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData-01.png 1103w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData-01-300x222.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData-01-1024x758.png 1024w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData-01-768x569.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/07\/Huong-dan-cai-lai-he-dieu-hanh-VPS-InterData-01-750x556.png 750w\" sizes=\"auto, (max-width: 1103px) 100vw, 1103px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Checklist-10-viec-can-lam-ngay-sau-khi-cai-lai-VPS\"><\/span>Checklist 10 vi\u1ec7c c\u1ea7n l\u00e0m ngay sau khi c\u00e0i l\u1ea1i VPS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Vi\u1ec7c c\u00e0i \u0111\u1eb7t ho\u00e0n t\u1ea5t ch\u1ec9 l\u00e0 b\u01b0\u1edbc kh\u1edfi \u0111\u1ea7u. M\u1ed9t VPS m\u1edbi gi\u1ed1ng nh\u01b0 m\u1ed9t ng\u00f4i nh\u00e0 tr\u1ed1ng. B\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc c\u1ea5u h\u00ecnh v\u00e0 b\u1ea3o m\u1eadt c\u01a1 b\u1ea3n sau \u0111\u00e2y \u0111\u1ec3 bi\u1ebfn n\u00f3 th\u00e0nh m\u1ed9t m\u00f4i tr\u01b0\u1eddng an to\u00e0n v\u00e0 s\u1eb5n s\u00e0ng cho c\u00f4ng vi\u1ec7c.<\/p>\n<ol>\n<li><strong>\u0110\u0103ng nh\u1eadp SSH l\u1ea7n \u0111\u1ea7u:<\/strong> S\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u <code>root<\/code> m\u1edbi \u0111\u01b0\u1ee3c c\u1ea5p \u0111\u1ec3 k\u1ebft n\u1ed1i v\u00e0o VPS. B\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u thay \u0111\u1ed5i m\u1eadt kh\u1ea9u ngay trong l\u1ea7n \u0111\u0103ng nh\u1eadp \u0111\u1ea7u ti\u00ean.<\/li>\n<li><strong>C\u1eadp nh\u1eadt to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng:<\/strong> Lu\u00f4n b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c c\u1eadp nh\u1eadt t\u1ea5t c\u1ea3 c\u00e1c g\u00f3i ph\u1ea7n m\u1ec1m l\u00ean phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t \u0111\u1ec3 v\u00e1 c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt. <code>sudo apt update &amp;&amp; sudo apt upgrade -y<\/code><\/li>\n<li><strong>T\u1ea1o m\u1ed9t ng\u01b0\u1eddi d\u00f9ng m\u1edbi (kh\u00f4ng d\u00f9ng root):<\/strong> S\u1eed d\u1ee5ng t\u00e0i kho\u1ea3n <code>root<\/code> cho c\u00e1c c\u00f4ng vi\u1ec7c h\u00e0ng ng\u00e0y l\u00e0 r\u1ea5t r\u1ee7i ro. H\u00e3y t\u1ea1o m\u1ed9t ng\u01b0\u1eddi d\u00f9ng m\u1edbi v\u1edbi quy\u1ec1n <code>sudo<\/code>. <code>adduser [your_username]<\/code> <code>usermod -aG sudo [your_username]<\/code><\/li>\n<li><strong>C\u1ea5u h\u00ecnh Firewall (t\u01b0\u1eddng l\u1eeda):<\/strong> K\u00edch ho\u1ea1t t\u01b0\u1eddng l\u1eeda v\u00e0 ch\u1ec9 cho ph\u00e9p c\u00e1c k\u1ebft n\u1ed1i c\u1ea7n thi\u1ebft (SSH, HTTP, HTTPS). UFW l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 r\u1ea5t d\u1ec5 s\u1eed d\u1ee5ng tr\u00ean Ubuntu. <code>sudo ufw allow OpenSSH<\/code> <code>sudo ufw enable<\/code><\/li>\n<li><strong>C\u00e0i \u0111\u1eb7t Web Server (Nginx\/Apache):<\/strong> T\u00f9y thu\u1ed9c v\u00e0o nhu c\u1ea7u c\u1ee7a b\u1ea1n, h\u00e3y c\u00e0i \u0111\u1eb7t m\u1ed9t web server \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho website. <a href=\"https:\/\/interdata.vn\/blog\/nginx-la-gi\/\">Nginx<\/a> th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng v\u00ec hi\u1ec7u n\u0103ng cao.<\/li>\n<li><strong>C\u00e0i \u0111\u1eb7t PHP v\u00e0 Database (MySQL\/MariaDB):<\/strong> C\u00e0i \u0111\u1eb7t m\u00f4i tr\u01b0\u1eddng c\u1ea7n thi\u1ebft \u0111\u1ec3 ch\u1ea1y c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/web-application-la-gi\/\">\u1ee9ng d\u1ee5ng web<\/a> d\u1ef1a tr\u00ean PHP v\u00e0 MySQL.<\/li>\n<li><strong>Restore l\u1ea1i d\u1eef li\u1ec7u \u0111\u00e3 sao l\u01b0u:<\/strong> T\u1ea3i l\u00ean v\u00e0 gi\u1ea3i n\u00e9n file m\u00e3 ngu\u1ed3n, sau \u0111\u00f3 nh\u1eadp l\u1ea1i file c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u00e3 backup tr\u01b0\u1edbc \u0111\u00f3.<\/li>\n<li><strong>C\u1ea5u h\u00ecnh t\u00ean mi\u1ec1n tr\u1ecf v\u1ec1 IP:<\/strong> Truy c\u1eadp v\u00e0o trang qu\u1ea3n l\u00fd <a href=\"https:\/\/interdata.vn\/blog\/dns-la-gi\/\">DNS<\/a> c\u1ee7a t\u00ean mi\u1ec1n v\u00e0 tr\u1ecf b\u1ea3n ghi A v\u1ec1 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a VPS.<\/li>\n<li><strong>C\u00e0i \u0111\u1eb7t <a href=\"https:\/\/interdata.vn\/blog\/chung-chi-ssl\/\">ch\u1ee9ng ch\u1ec9 SSL<\/a>\/TLS mi\u1ec5n ph\u00ed:<\/strong> S\u1eed d\u1ee5ng Let&#8217;s Encrypt v\u00e0 c\u00f4ng c\u1ee5 Certbot \u0111\u1ec3 c\u00e0i \u0111\u1eb7t SSL, gi\u00fap website c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng qua giao th\u1ee9c HTTPS an to\u00e0n.<\/li>\n<li><strong>T\u00f9y ch\u1ec9nh m\u00fai gi\u1edd (Timezone):<\/strong> \u0110\u1ea3m b\u1ea3o m\u00fai gi\u1edd c\u1ee7a server \u0111\u01b0\u1ee3c \u0111\u1eb7t ch\u00ednh x\u00e1c \u0111\u1ec3 c\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 log h\u1ec7 th\u1ed1ng ghi nh\u1eadn th\u1eddi gian \u0111\u00fang.<\/li>\n<\/ol>\n<p>Ho\u00e0n th\u00e0nh checklist n\u00e0y s\u1ebd gi\u00fap VPS c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n h\u01a1n r\u1ea5t nhi\u1ec1u.<\/p>\n<p><strong>N\u1ebfu b\u1ea1n c\u1ea7n m\u1ed9t gi\u1ea3i ph\u00e1p VPS hi\u1ec7u n\u0103ng cao v\u00e0 d\u1ec5 d\u00e0ng qu\u1ea3n l\u00fd, h\u00e3y tham kh\u1ea3o d\u1ecbch v\u1ee5 <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/interdata.vn\/thue-vps\/\">VPS gi\u00e1 r\u1ebb uy t\u00edn &#8211; Hi\u1ec7u n\u0103ng cao &#8211; \u0110a d\u1ea1ng c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh<\/a> c\u1ee7a ch\u00fang t\u00f4i.<\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Mot-so-cau-hoi-thuong-gap-FAQ\"><\/span>M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Cai-lai-OS-co-lam-thay-doi-dia-chi-IP-khong\"><\/span>C\u00e0i l\u1ea1i OS c\u00f3 l\u00e0m thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Th\u00f4ng th\u01b0\u1eddng l\u00e0 <strong>KH\u00d4NG<\/strong>. H\u1ea7u h\u1ebft c\u00e1c nh\u00e0 cung c\u1ea5p, bao g\u1ed3m c\u1ea3 InterData, \u0111\u1ec1u gi\u1eef nguy\u00ean \u0111\u1ecba ch\u1ec9 IP \u0111\u00e3 c\u1ea5p cho VPS c\u1ee7a b\u1ea1n sau khi c\u00e0i \u0111\u1eb7t l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n kh\u00f4ng ph\u1ea3i c\u1eadp nh\u1eadt l\u1ea1i DNS cho t\u00ean mi\u1ec1n. Tuy nhi\u00ean, b\u1ea1n n\u00ean ki\u1ec3m tra l\u1ea1i ch\u00ednh s\u00e1ch c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u1ec3 ch\u1eafc ch\u1eafn.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Toi-khong-ket-noi-SSH-duoc-sau-khi-cai-lai-phai-lam-sao\"><\/span>T\u00f4i kh\u00f4ng k\u1ebft n\u1ed1i SSH \u0111\u01b0\u1ee3c sau khi c\u00e0i l\u1ea1i, ph\u1ea3i l\u00e0m sao?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn v\u00e0 th\u01b0\u1eddng c\u00f3 3 nguy\u00ean nh\u00e2n ch\u00ednh:<\/p>\n<ol>\n<li><strong>Sai th\u00f4ng tin \u0111\u0103ng nh\u1eadp:<\/strong> H\u00e3y ch\u1eafc ch\u1eafn b\u1ea1n \u0111ang s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u <code>root<\/code> m\u1edbi \u0111\u01b0\u1ee3c c\u1ea5p sau khi c\u00e0i l\u1ea1i.<\/li>\n<li><strong>L\u1ed7i &#8220;Host Key Verification Failed&#8221;:<\/strong> M\u00e1y t\u00ednh c\u1ee7a b\u1ea1n v\u1eabn l\u01b0u &#8220;d\u1ea5u v\u00e2n tay&#8221; SSH c\u1ee7a VPS c\u0169. B\u1ea1n c\u1ea7n x\u00f3a n\u00f3 \u0111i. Tr\u00ean Windows ho\u1eb7c macOS\/Linux, m\u1edf file <code>~\/.ssh\/known_hosts<\/code> v\u00e0 x\u00f3a d\u00f2ng ch\u1ee9a \u0111\u1ecba ch\u1ec9 IP c\u1ee7a VPS.<\/li>\n<li><strong>Firewall ch\u1eb7n k\u1ebft n\u1ed1i:<\/strong> Ki\u1ec3m tra l\u1ea1i xem t\u01b0\u1eddng l\u1eeda tr\u00ean VPS c\u00f3 cho ph\u00e9p k\u1ebft n\u1ed1i qua c\u1ed5ng 22 (c\u1ed5ng SSH m\u1eb7c \u0111\u1ecbnh) hay kh\u00f4ng.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Co-cach-nao-cai-lai-Windows-cho-VPS-Linux-khong\"><\/span>C\u00f3 c\u00e1ch n\u00e0o c\u00e0i l\u1ea1i Windows cho VPS Linux kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110i\u1ec1u n\u00e0y ho\u00e0n to\u00e0n ph\u1ee5 thu\u1ed9c v\u00e0o nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 c\u1ee7a b\u1ea1n. N\u1ebfu trong danh s\u00e1ch h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u00f3 s\u1eb5n \u0111\u1ec3 c\u00e0i \u0111\u1eb7t c\u00f3 c\u00e1c phi\u00ean b\u1ea3n Windows Server, b\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i t\u1eeb Linux sang Windows. L\u01b0u \u00fd r\u1eb1ng vi\u1ec7c s\u1eed d\u1ee5ng Windows VPS th\u01b0\u1eddng s\u1ebd ph\u00e1t sinh th\u00eam chi ph\u00ed b\u1ea3n quy\u1ec1n. B\u1ea1n kh\u00f4ng th\u1ec3 t\u1ef1 c\u00e0i \u0111\u1eb7t m\u1ed9t file ISO Windows c\u1ee7a ri\u00eang m\u00ecnh n\u1ebfu nh\u00e0 cung c\u1ea5p kh\u00f4ng h\u1ed7 tr\u1ee3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vi\u1ec7c c\u00e0i l\u1ea1i h\u1ec7 \u0111i\u1ec1u h\u00e0nh cho VPS l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p m\u1ea1nh m\u1ebd gi\u00fap b\u1ea1n kh\u1eafc ph\u1ee5c c\u00e1c s\u1ef1 c\u1ed1 nghi\u00eam tr\u1ecdng, t\u1ed1i \u01b0u hi\u1ec7u n\u0103ng ho\u1eb7c thi\u1ebft l\u1eadp m\u1ed9t m\u00f4i tr\u01b0\u1eddng ho\u00e0n to\u00e0n m\u1edbi. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd cung c\u1ea5p m\u1ed9t quy tr\u00ecnh to\u00e0n di\u1ec7n, t\u1eeb vi\u1ec7c x\u00e1c \u0111\u1ecbnh khi n\u00e0o c\u1ea7n c\u00e0i<\/p>\n","protected":false},"author":2,"featured_media":31398,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-31390","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vps"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/31390","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=31390"}],"version-history":[{"count":1,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/31390\/revisions"}],"predecessor-version":[{"id":31401,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/31390\/revisions\/31401"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/31398"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=31390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=31390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=31390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}