{"id":35398,"date":"2025-10-31T15:42:07","date_gmt":"2025-10-31T08:42:07","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=35398"},"modified":"2025-10-31T16:20:49","modified_gmt":"2025-10-31T09:20:49","slug":"hostname-la-gi","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/hostname-la-gi\/","title":{"rendered":"Hostname l\u00e0 g\u00ec? C\u00e1ch T\u00ecm, Xem &#038; \u0110\u1ed5i Hostname Chi Ti\u1ebft (A-Z)"},"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\/hostname-la-gi\/#Hostname-la-gi\" >Hostname l\u00e0 g\u00ec?<\/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\/hostname-la-gi\/#Cau-truc-va-Quy-tac-dat-ten-Hostname\" >C\u1ea5u tr\u00fac v\u00e0 Quy t\u1eafc \u0111\u1eb7t t\u00ean Hostname<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/#Vai-tro-cua-Hostname-trong-mang-may-tinh\" >Vai tr\u00f2 c\u1ee7a Hostname trong m\u1ea1ng m\u00e1y t\u00ednh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/#Vi-du-thuc-te-ve-Hostname\" >V\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u1ec1 Hostname<\/a><\/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\/hostname-la-gi\/#Phan-biet-Hostname-va-Domain-Name-FQDN-Dia-chi-IP\" >Ph\u00e2n bi\u1ec7t Hostname v\u00e0 Domain Name, FQDN,\u00a0\u0110\u1ecba ch\u1ec9 IP<\/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\/hostname-la-gi\/#Hostname-vs-Domain-Name\" >Hostname vs Domain Name<\/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\/hostname-la-gi\/#Hostname-vs-FQDN-Fully-Qualified-Domain-Name\" >Hostname vs FQDN (Fully Qualified Domain Name)<\/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\/hostname-la-gi\/#Hostname-vs-Dia-chi-IP\" >Hostname vs \u0110\u1ecba ch\u1ec9 IP<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/#Cach-tim-xem-doi-Hostname-tren-may-tinh-Windows-va-Linux\" >C\u00e1ch t\u00ecm, xem &amp; \u0111\u1ed5i Hostname tr\u00ean m\u00e1y t\u00ednh Windows v\u00e0 Linux<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/#Huong-dan-tren-He-dieu-hanh-Windows\" >H\u01b0\u1edbng d\u1eabn tr\u00ean H\u1ec7 \u0111i\u1ec1u h\u00e0nh Windows<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/#Huong-dan-tren-He-dieu-hanh-Linux-MintUbuntu\" >H\u01b0\u1edbng d\u1eabn tr\u00ean H\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux Mint\/Ubuntu<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/#Luu-y-chung-khi-su-dung-Hostname\" >L\u01b0u \u00fd chung khi s\u1eed d\u1ee5ng Hostname<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/#1-Tinh-duy-nhat-va-tranh-xung-dot\" >1. T\u00ednh duy nh\u1ea5t v\u00e0 tr\u00e1nh xung \u0111\u1ed9t<\/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\/hostname-la-gi\/#2-Dinh-dang-hop-le-Quy-tac-dat-ten\" >2. \u0110\u1ecbnh d\u1ea1ng h\u1ee3p l\u1ec7 (Quy t\u1eafc \u0111\u1eb7t t\u00ean)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/#3-Cau-hinh-va-Quan-ly-mang\" >3. C\u1ea5u h\u00ecnh v\u00e0 Qu\u1ea3n l\u00fd m\u1ea1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/#4-Tinh-de-doc-va-y-nghia\" >4. T\u00ednh d\u1ec5 \u0111\u1ecdc v\u00e0 \u00fd ngh\u0129a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/#5-Bao-mat-va-tuong-thich\" >5. B\u1ea3o m\u1eadt v\u00e0 t\u01b0\u01a1ng th\u00edch<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p><strong>Hostname<\/strong>\u00a0l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m t\u01b0\u1edfng ch\u1eebng \u0111\u01a1n gi\u1ea3n nh\u01b0ng l\u1ea1i \u0111\u00f3ng vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ecbnh danh v\u00e0 qu\u1ea3n l\u00fd thi\u1ebft b\u1ecb trong m\u1ea1ng m\u00e1y t\u00ednh. C\u00f9ng InterData t\u00ecm hi\u1ec3u <a href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/\"><strong>Hostname l\u00e0 g\u00ec<\/strong><\/a>, t\u1eeb vai tr\u00f2, ph\u00e2n bi\u1ec7t Hostname v\u1edbi c\u00e1c kh\u00e1i ni\u1ec7m nh\u01b0 Domain Name, FQDN, \u0111\u1ecba ch\u1ec9 IP, c\u00e1ch t\u00ecm\/xem\/\u0111\u1ed5i Hostname \u0111\u01a1n gi\u1ea3n nh\u1ea5t cho \u0111\u1ebfn nh\u1eefng l\u01b0u \u00fd k\u1ef9 thu\u1eadt quan tr\u1ecdng khi thay \u0111\u1ed5i Hostname \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 tin l\u00e0m ch\u1ee7 th\u00e0nh ph\u1ea7n quan tr\u1ecdng n\u00e0y.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Hostname-la-gi\"><\/span><strong>Hostname l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Hostname (t\u00ean m\u00e1y ch\u1ee7)<\/strong>\u00a0l\u00e0 t\u00ean ri\u00eang \u0111\u01b0\u1ee3c g\u00e1n cho m\u1ed9t thi\u1ebft b\u1ecb (nh\u01b0 m\u00e1y t\u00ednh, m\u00e1y ch\u1ee7, m\u00e1y in) trong m\u1ed9t m\u1ea1ng m\u00e1y t\u00ednh. Gi\u1ed1ng nh\u01b0 t\u00ean c\u1ee7a b\u1ea1n trong m\u1ed9t l\u1edbp h\u1ecdc, Hostname gi\u00fap c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c v\u00e0 ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb c\u00f3 th\u1ec3 nh\u1eadn di\u1ec7n, giao ti\u1ebfp v\u00e0 ph\u00e2n bi\u1ec7t thi\u1ebft b\u1ecb \u0111\u00f3 v\u1edbi h\u00e0ng lo\u1ea1t thi\u1ebft b\u1ecb kh\u00e1c trong c\u00f9ng m\u1ea1ng.<\/p>\n<figure id=\"attachment_35399\" aria-describedby=\"caption-attachment-35399\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35399\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hostname-la-gi.jpg\" alt=\"Hostname l\u00e0 g\u00ec\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hostname-la-gi.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hostname-la-gi-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hostname-la-gi-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-35399\" class=\"wp-caption-text\">Hostname l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p>V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, Hostname l\u00e0 m\u1ed9t chu\u1ed7i k\u00fd t\u1ef1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ecbnh danh m\u1ed9t \u0111i\u1ec3m n\u00fat (node) tr\u00ean m\u1ea1ng. T\u00ean n\u00e0y sau \u0111\u00f3 s\u1ebd \u0111\u01b0\u1ee3c \u00e1nh x\u1ea1 t\u1edbi m\u1ed9t \u0111\u1ecba ch\u1ec9 IP th\u00f4ng qua m\u1ed9t ti\u1ebfn tr\u00ecnh g\u1ecdi l\u00e0 ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n (DNS resolution) ho\u1eb7c th\u00f4ng qua m\u1ed9t file c\u1ea5u h\u00ecnh c\u1ee5c b\u1ed9 (hosts file). \u0110i\u1ec1u n\u00e0y cho ph\u00e9p ch\u00fang ta s\u1eed d\u1ee5ng m\u1ed9t c\u00e1i t\u00ean th\u00e2n thi\u1ec7n v\u00e0 d\u1ec5 nh\u1edb nh\u01b0 mail-server-01 thay v\u00ec ph\u1ea3i nh\u1edb m\u1ed9t \u0111\u1ecba ch\u1ec9 IP ph\u1ee9c t\u1ea1p nh\u01b0 192.168.1.100.<\/p>\n<p>Vi\u1ec7c hi\u1ec3u r\u00f5 <strong>Hostname l\u00e0 g\u00ec<\/strong> kh\u00f4ng ch\u1ec9 l\u00e0 ki\u1ebfn th\u1ee9c n\u1ec1n t\u1ea3ng cho sinh vi\u00ean IT m\u00e0 c\u00f2n l\u00e0 k\u1ef9 n\u0103ng thi\u1ebft y\u1ebfu cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m, qu\u1ea3n tr\u1ecb vi\u00ean h\u1ec7 th\u1ed1ng v\u00e0 b\u1ea5t k\u1ef3 ai \u0111ang l\u00e0m vi\u1ec7c v\u1edbi m\u00f4i tr\u01b0\u1eddng m\u1ea1ng.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau-truc-va-Quy-tac-dat-ten-Hostname\"><\/span><strong>C\u1ea5u tr\u00fac v\u00e0 Quy t\u1eafc \u0111\u1eb7t t\u00ean Hostname<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hostname kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t chu\u1ed7i k\u00fd t\u1ef1 ng\u1eabu nhi\u00ean. Vi\u1ec7c \u0111\u1eb7t t\u00ean Hostname ph\u1ea3i tu\u00e2n theo nh\u1eefng quy t\u1eafc c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong c\u00e1c t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt (RFCs) c\u1ee7a Internet \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh.<\/p>\n<p>C\u00e1c quy t\u1eafc ch\u00ednh bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>K\u00fd t\u1ef1 cho ph\u00e9p:<\/strong> Hostname ch\u1ec9 \u0111\u01b0\u1ee3c ch\u1ee9a c\u00e1c ch\u1eef c\u00e1i t\u1eeb &#8216;a&#8217; \u0111\u1ebfn &#8216;z&#8217; (kh\u00f4ng ph\u00e2n bi\u1ec7t hoa th\u01b0\u1eddng), c\u00e1c ch\u1eef s\u1ed1 t\u1eeb &#8216;0&#8217; \u0111\u1ebfn &#8216;9&#8217;, v\u00e0 d\u1ea5u g\u1ea1ch ngang (&#8216;-&#8216;).<\/li>\n<li><strong>Kh\u00f4ng c\u00f3 k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t:<\/strong> C\u00e1c k\u00fd t\u1ef1 nh\u01b0 d\u1ea5u ch\u1ea5m (.), d\u1ea5u g\u1ea1ch d\u01b0\u1edbi (_), kho\u1ea3ng tr\u1eafng, hay b\u1ea5t k\u1ef3 k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t n\u00e0o kh\u00e1c \u0111\u1ec1u kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p.<\/li>\n<li><strong>B\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac:<\/strong> Hostname kh\u00f4ng \u0111\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u ho\u1eb7c k\u1ebft th\u00fac b\u1eb1ng d\u1ea5u g\u1ea1ch ngang.<\/li>\n<li><strong>\u0110\u1ed9 d\u00e0i:<\/strong> M\u1ed7i nh\u00e3n (ph\u1ea7n \u0111\u01b0\u1ee3c ng\u0103n c\u00e1ch b\u1edfi d\u1ea5u ch\u1ea5m) trong m\u1ed9t t\u00ean mi\u1ec1n \u0111\u1ea7y \u0111\u1ee7 kh\u00f4ng \u0111\u01b0\u1ee3c d\u00e0i qu\u00e1 63 k\u00fd t\u1ef1, v\u00e0 t\u1ed5ng \u0111\u1ed9 d\u00e0i c\u1ee7a to\u00e0n b\u1ed9 t\u00ean kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 255 k\u00fd t\u1ef1.<\/li>\n<\/ul>\n<p><strong>V\u00ed d\u1ee5 v\u1ec1 Hostname h\u1ee3p l\u1ec7<\/strong>: web-server, data-center-01, my-laptop.<\/p>\n<p><strong>V\u00ed d\u1ee5 v\u1ec1 Hostname kh\u00f4ng h\u1ee3p l\u1ec7<\/strong>: _web_server (ch\u1ee9a g\u1ea1ch d\u01b0\u1edbi), my pc (ch\u1ee9a kho\u1ea3ng tr\u1eafng), -server (b\u1eaft \u0111\u1ea7u b\u1eb1ng g\u1ea1ch ngang).<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Vai-tro-cua-Hostname-trong-mang-may-tinh\"><\/span><strong>Vai tr\u00f2 c\u1ee7a Hostname trong m\u1ea1ng m\u00e1y t\u00ednh<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i s\u1ebd gi\u00fap b\u1ea1n tr\u1ea3 l\u1eddi s\u00e2u h\u01a1n c\u00e2u h\u1ecfi <strong>Hostname l\u00e0 g\u00ec<\/strong>. Hostname \u0111\u00f3ng vai tr\u00f2 kh\u00f4ng th\u1ec3 thi\u1ebfu trong vi\u1ec7c v\u1eadn h\u00e0nh v\u00e0 qu\u1ea3n l\u00fd m\u1ea1ng.<\/p>\n<ul>\n<li><strong>\u0110\u1ecbnh danh thi\u1ebft b\u1ecb trong m\u1ea1ng: <\/strong>Hostname gi\u00fap <strong>nh\u1eadn di\u1ec7n c\u00e1c m\u00e1y t\u00ednh, server ho\u1eb7c thi\u1ebft b\u1ecb<\/strong> m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng. V\u00ed d\u1ee5, khi b\u1ea1n c\u00f3 nhi\u1ec1u m\u00e1y ch\u1ee7 trong h\u1ec7 th\u1ed1ng, m\u1ed7i m\u00e1y \u0111\u1ec1u c\u1ea7n hostname ri\u00eang \u0111\u1ec3 tr\u00e1nh nh\u1ea7m l\u1eabn.<\/li>\n<li><strong>\u0110\u01a1n gi\u1ea3n h\u00f3a truy c\u1eadp: <\/strong>Thay v\u00ec ph\u1ea3i nh\u1edb \u0111\u1ecba ch\u1ec9 IP d\u1ea1ng s\u1ed1 (v\u00ed d\u1ee5: <code>192.168.1.10<\/code>), b\u1ea1n c\u00f3 th\u1ec3 g\u00f5 <code>server-web<\/code> \u0111\u1ec3 truy c\u1eadp nhanh h\u01a1n. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch khi qu\u1ea3n l\u00fd h\u00e0ng ch\u1ee5c ho\u1eb7c h\u00e0ng tr\u0103m m\u00e1y ch\u1ee7.<\/li>\n<li><strong>H\u1ed7 tr\u1ee3 DNS v\u00e0 Email Server: <\/strong>H\u1ec7 th\u1ed1ng DNS s\u1eed d\u1ee5ng hostname \u0111\u1ec3 ph\u00e2n gi\u1ea3i t\u00ean mi\u1ec1n th\u00e0nh IP, c\u00f2n m\u00e1y ch\u1ee7 email (SMTP) d\u00f9ng hostname trong <strong>Reverse DNS<\/strong> \u0111\u1ec3 x\u00e1c minh danh t\u00ednh g\u1eedi email (PTR record).<\/li>\n<li><strong>T\u0103ng kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng h\u1ec7 th\u1ed1ng: <\/strong>Khi h\u1ea1 t\u1ea7ng m\u1edf r\u1ed9ng, s\u1eed d\u1ee5ng hostname nh\u1ea5t qu\u00e1n gi\u00fap d\u1ec5 d\u00e0ng <strong>t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u1ea5u h\u00ecnh, gi\u00e1m s\u00e1t v\u00e0 b\u1ea3o tr\u00ec.<\/strong><\/li>\n<\/ul>\n<figure id=\"attachment_35400\" aria-describedby=\"caption-attachment-35400\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35400\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hostname-trong-mang-may-tinh.jpg\" alt=\"Hostname trong m\u1ea1ng m\u00e1y t\u00ednh\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hostname-trong-mang-may-tinh.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hostname-trong-mang-may-tinh-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Hostname-trong-mang-may-tinh-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-35400\" class=\"wp-caption-text\">Hostname trong m\u1ea1ng m\u00e1y t\u00ednh<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Vi-du-thuc-te-ve-Hostname\"><\/span><strong>V\u00ed d\u1ee5 th\u1ef1c t\u1ebf v\u1ec1 Hostname<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u0110\u1ec3 h\u00ecnh dung r\u00f5 h\u01a1n, h\u00e3y xem qua m\u1ed9t v\u00e0i v\u00ed d\u1ee5 v\u1ec1 Hostname trong c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf:<\/p>\n<ul>\n<li><strong>Hostname c\u1ee7a m\u00e1y t\u00ednh c\u00e1 nh\u00e2n:<\/strong> Khi b\u1ea1n c\u00e0i \u0111\u1eb7t Windows ho\u1eb7c macOS, h\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng t\u1ea1o m\u1ed9t Hostname ng\u1eabu nhi\u00ean nh\u01b0 DESKTOP-8A7B6C ho\u1eb7c MacBook-Pro-cua-Tuan. \u0110\u00e2y ch\u00ednh l\u00e0 t\u00ean m\u00e0 m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng \u0111\u1ec3 &#8220;x\u01b0ng danh&#8221; trong m\u1ea1ng Wi-Fi nh\u00e0 b\u1ea1n.<\/li>\n<li><strong>Hostname c\u1ee7a m\u00e1y ch\u1ee7 web:<\/strong> M\u1ed9t m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef website c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t Hostname l\u00e0 web-hosting-01 ho\u1eb7c ubuntu-server-prod. T\u00ean n\u00e0y th\u01b0\u1eddng ch\u1ec9 c\u00f3 \u00fd ngh\u0129a trong m\u1ea1ng n\u1ed9i b\u1ed9 c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5.<\/li>\n<li><strong>Hostname \u0111\u1eb7c bi\u1ec7t: localhost:<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t Hostname ti\u00eau chu\u1ea9n v\u00e0 lu\u00f4n lu\u00f4n tr\u1ecf v\u1ec1 ch\u00ednh thi\u1ebft b\u1ecb \u0111ang s\u1eed d\u1ee5ng. Khi b\u1ea1n truy c\u1eadp localhost tr\u00ean m\u00e1y t\u00ednh c\u1ee7a m\u00ecnh, b\u1ea1n th\u1ef1c ch\u1ea5t \u0111ang g\u1eedi y\u00eau c\u1ea7u \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP loopback l\u00e0 127.0.0.1. C\u00e1c l\u1eadp tr\u00ecnh vi\u00ean th\u01b0\u1eddng xuy\u00ean s\u1eed d\u1ee5ng localhost \u0111\u1ec3 ch\u1ea1y v\u00e0 ki\u1ec3m th\u1eed \u1ee9ng d\u1ee5ng ngay tr\u00ean m\u00e1y ph\u00e1t tri\u1ec3n c\u1ee7a h\u1ecd.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Phan-biet-Hostname-va-Domain-Name-FQDN-Dia-chi-IP\"><\/span><strong>Ph\u00e2n bi\u1ec7t Hostname v\u00e0 Domain Name, FQDN,\u00a0\u0110\u1ecba ch\u1ec9 IP<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1ed9t trong nh\u1eefng r\u00e0o c\u1ea3n l\u1edbn nh\u1ea5t khi t\u00ecm hi\u1ec3u <strong>Hostname l\u00e0 g\u00ec<\/strong> l\u00e0 s\u1ef1 m\u01a1 h\u1ed3 gi\u1eefa n\u00f3 v\u00e0 c\u00e1c thu\u1eadt ng\u1eef li\u00ean quan nh\u01b0 Domain Name, FQDN. Vi\u1ec7c ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng c\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hostname-vs-Domain-Name\"><\/span><strong>Hostname vs Domain Name<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i n\u1eb1m \u1edf ph\u1ea1m vi. <strong>Hostname<\/strong> l\u00e0 t\u00ean c\u1ee7a m\u1ed9t m\u00e1y t\u00ednh ri\u00eang l\u1ebb, trong khi <strong>Domain Name <\/strong>l\u00e0 t\u00ean \u0111\u1ecbnh v\u1ecb m\u1ea1ng ho\u1eb7c website tr\u00ean internet, bao g\u1ed3m c\u00e1c ph\u1ea7n nh\u01b0 t\u00ean mi\u1ec1n c\u1ea5p hai v\u00e0 t\u00ean mi\u1ec1n c\u1ea5p cao (v\u00ed d\u1ee5: abc.com).<\/p>\n<ul>\n<li>H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng interdata.vn l\u00e0 m\u1ed9t t\u00f2a nh\u00e0 v\u0103n ph\u00f2ng. \u0110\u00e2y l\u00e0 Domain Name.<\/li>\n<li>B\u00ean trong t\u00f2a nh\u00e0 \u0111\u00f3, c\u00f3 c\u00e1c ph\u00f2ng ban kh\u00e1c nhau nh\u01b0 ph\u00f2ng kinh doanh, ph\u00f2ng k\u1ef9 thu\u1eadt. M\u1ed7i ph\u00f2ng c\u00f3 m\u1ed9t m\u00e1y ch\u1ee7 ri\u00eang, \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 sale-server v\u00e0 tech-server. \u0110\u00e2y ch\u00ednh l\u00e0 c\u00e1c Hostname.<\/li>\n<\/ul>\n<p>M\u1ed9t Hostname t\u1ed3n t\u1ea1i \u0111\u1ed9c l\u1eadp trong m\u1ea1ng n\u1ed9i b\u1ed9, nh\u01b0ng khi k\u1ebft h\u1ee3p v\u1edbi Domain Name, n\u00f3 s\u1ebd t\u1ea1o ra m\u1ed9t \u0111\u1ecbnh danh duy nh\u1ea5t tr\u00ean to\u00e0n c\u1ea7u.<\/p>\n<figure id=\"attachment_35402\" aria-describedby=\"caption-attachment-35402\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35402\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Phan-biet-Hostname-va-Domain-Name-FQDN-Dia-chi-IP.jpg\" alt=\"Ph\u00e2n bi\u1ec7t Hostname v\u00e0 Domain Name, FQDN,\u00a0\u0110\u1ecba ch\u1ec9 IP\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Phan-biet-Hostname-va-Domain-Name-FQDN-Dia-chi-IP.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Phan-biet-Hostname-va-Domain-Name-FQDN-Dia-chi-IP-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Phan-biet-Hostname-va-Domain-Name-FQDN-Dia-chi-IP-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-35402\" class=\"wp-caption-text\">Ph\u00e2n bi\u1ec7t Hostname v\u00e0 Domain Name, FQDN,\u00a0\u0110\u1ecba ch\u1ec9 IP<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Hostname-vs-FQDN-Fully-Qualified-Domain-Name\"><\/span><strong>Hostname vs FQDN (Fully Qualified Domain Name)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>FQDN, hay T\u00ean mi\u1ec1n \u0111\u1ea7y \u0111\u1ee7, l\u00e0 t\u00ean mi\u1ec1n ho\u00e0n ch\u1ec9nh, k\u1ebft h\u1ee3p hostname v\u00e0 domain name, x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c v\u1ecb tr\u00ed c\u1ee7a m\u1ed9t thi\u1ebft b\u1ecb ho\u1eb7c m\u00e1y ch\u1ee7 tr\u00ean internet (v\u00ed d\u1ee5: mail.abc.com).<\/p>\n<p>C\u00f4ng th\u1ee9c r\u1ea5t \u0111\u01a1n gi\u1ea3n: <strong>FQDN = Hostname + . + Domain Name<\/strong><\/p>\n<p>V\u00ed d\u1ee5, v\u1edbi m\u00e1y ch\u1ee7 mail c\u1ee7a Google, ch\u00fang ta c\u00f3:<\/p>\n<ul>\n<li><strong>Hostname<\/strong>: mail<\/li>\n<li><strong>Domain Name<\/strong>: google.com<\/li>\n<li><strong>FQDN<\/strong>: mail.google.com<\/li>\n<\/ul>\n<p>Khi b\u1ea1n g\u00f5 mail.google.com v\u00e0o tr\u00ecnh duy\u1ec7t, h\u1ec7 th\u1ed1ng DNS s\u1ebd ph\u00e2n gi\u1ea3i c\u00e1i t\u00ean \u0111\u1ea7y \u0111\u1ee7 n\u00e0y ra \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 email Google \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Hostname-vs-Dia-chi-IP\"><\/span><strong>Hostname vs \u0110\u1ecba ch\u1ec9 IP<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed1i quan h\u1ec7 gi\u1eefa Hostname v\u00e0 \u0110\u1ecba ch\u1ec9 IP gi\u1ed1ng nh\u01b0 m\u1ed1i quan h\u1ec7 gi\u1eefa t\u00ean c\u1ee7a m\u1ed9t ng\u01b0\u1eddi v\u00e0 \u0111\u1ecba ch\u1ec9 nh\u00e0 c\u1ee7a ng\u01b0\u1eddi \u0111\u00f3.<\/p>\n<p>\u0110\u1ecba ch\u1ec9 IP l\u00e0 chu\u1ed7i s\u1ed1 d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh danh v\u00e0 \u0111\u1ecbnh v\u1ecb thi\u1ebft b\u1ecb tr\u00ean m\u1ea1ng (v\u00ed d\u1ee5: 192.168.1.1), gi\u00fap \u0111\u1ecbnh tuy\u1ebfn v\u00e0 giao ti\u1ebfp gi\u1eefa c\u00e1c m\u00e1y t\u00ednh; hostname v\u00e0 domain name l\u00e0 c\u00e1c t\u00ean th\u00e2n thi\u1ec7n \u00e1nh x\u1ea1 v\u1ec1 \u0111\u1ecba ch\u1ec9 IP n\u00e0y \u0111\u1ec3 d\u1ec5 nh\u1edb h\u01a1n.<\/p>\n<ul>\n<li><strong>Hostname (T\u00ean):<\/strong> D\u1ec5 nh\u1edb, th\u00e2n thi\u1ec7n v\u1edbi con ng\u01b0\u1eddi, d\u00f9ng \u0111\u1ec3 g\u1ecdi v\u00e0 nh\u1eadn di\u1ec7n. V\u00ed d\u1ee5: server-database-01.<\/li>\n<li><strong>\u0110\u1ecba ch\u1ec9 IP (\u0110\u1ecba ch\u1ec9 nh\u00e0):<\/strong> M\u1ed9t d\u00e3y s\u1ed1 duy nh\u1ea5t, d\u00f9ng \u0111\u1ec3 c\u00e1c b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn (router) t\u00ecm \u0111\u00fang \u0111\u01b0\u1eddng \u0111i v\u00e0 g\u1eedi d\u1eef li\u1ec7u \u0111\u1ebfn ch\u00ednh x\u00e1c. V\u00ed d\u1ee5: 192.168.10.25.<\/li>\n<\/ul>\n<p>H\u1ec7 th\u1ed1ng DNS (Domain Name System) ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t &#8220;danh b\u1ea1&#8221; kh\u1ed5ng l\u1ed3, ch\u1ecbu tr\u00e1ch nhi\u1ec7m d\u1ecbch t\u1eeb Hostname\/FQDN m\u00e0 con ng\u01b0\u1eddi s\u1eed d\u1ee5ng sang \u0111\u1ecba ch\u1ec9 IP m\u00e0 m\u00e1y m\u00f3c c\u1ea7n \u0111\u1ec3 giao ti\u1ebfp.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cach-tim-xem-doi-Hostname-tren-may-tinh-Windows-va-Linux\"><\/span>C\u00e1ch t\u00ecm, xem &amp; \u0111\u1ed5i Hostname tr\u00ean m\u00e1y t\u00ednh Windows v\u00e0 Linux<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Huong-dan-tren-He-dieu-hanh-Windows\"><\/span>H\u01b0\u1edbng d\u1eabn tr\u00ean H\u1ec7 \u0111i\u1ec1u h\u00e0nh Windows<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Trong Windows, Hostname ch\u00ednh l\u00e0 <strong>&#8220;Full Computer Name&#8221;<\/strong>. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch l\u1ea5y hostname m\u00e1y t\u00ednh \u0111\u01a1n gi\u1ea3n nh\u1ea5t:<\/p>\n<h4>C\u00e1ch T\u00ecm v\u00e0 Xem Hostname tr\u00ean Windows<\/h4>\n<p>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Command Prompt (Cmd) \u0111\u1ec3 nhanh ch\u00f3ng ki\u1ec3m tra Hostname hi\u1ec7n t\u1ea1i:<\/p>\n<p>1. <strong>B\u01b0\u1edbc 1:<\/strong> Ch\u1ecdn t\u1ed5 h\u1ee3p ph\u00edm <strong>Windows + R<\/strong>. Sau khi h\u1ed9p tho\u1ea1i m\u1edbi xu\u1ea5t hi\u1ec7n, g\u00f5 <code>Cmd<\/code> (ho\u1eb7c <code>cmd<\/code>) v\u00e0 ch\u1ecdn <strong>OK<\/strong> ho\u1eb7c nh\u1ea5n <strong>Enter<\/strong>.<\/p>\n<p>2. <strong>B\u01b0\u1edbc 2:<\/strong> Khi h\u1ed9p tho\u1ea1i command xu\u1ea5t hi\u1ec7n, b\u1ea1n h\u00e3y g\u00f5 c\u00e2u l\u1ec7nh <code>Hostname<\/code>. Hostname c\u1ee7a m\u00e1y s\u1ebd hi\u1ec3n th\u1ecb ngay sau \u0111\u00f3.<\/p>\n<h4>C\u00e1ch Thay \u0110\u1ed5i Hostname tr\u00ean Windows<\/h4>\n<p>C\u00f3 hai c\u00e1ch ph\u1ed5 bi\u1ebfn \u0111\u1ec3 thay \u0111\u1ed5i Hostname: b\u1eb1ng giao di\u1ec7n ho\u1eb7c b\u1eb1ng CMD.<\/p>\n<p><strong>1. \u0110\u1ed5i Hostname b\u1eb1ng giao di\u1ec7n (GUI)<\/strong><\/p>\n<p>\u0110\u1ec3 ch\u1ec9nh s\u1eeda Hostname, b\u1ea1n th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c sau:<\/p>\n<ul>\n<li>1. Quay l\u1ea1i m\u00e0n h\u00ecnh desktop, nh\u1ea5n <strong>Windows + R<\/strong> \u279d g\u00f5 <code>sysdm.cpl<\/code> \u279d nh\u1ea5n <strong>OK<\/strong>. (Ho\u1eb7c nh\u1ea5n chu\u1ed9t ph\u1ea3i v\u00e0o bi\u1ec3u t\u01b0\u1ee3ng <strong>This PC<\/strong>, ch\u1ecdn <strong>Properties<\/strong> &gt; <strong>Advanced system settings<\/strong> &gt; <strong>Computer Name<\/strong>).<\/li>\n<li>2. Trong c\u1eeda s\u1ed5 <em>System Properties<\/em>, ch\u1ecdn tab <strong>Computer Name<\/strong> \u279d sau \u0111\u00f3 nh\u1ea5n n\u00fat <strong>Change&#8230;<\/strong>.<\/li>\n<li>3. Nh\u1eadp t\u00ean m\u1edbi v\u00e0o \u00f4 <strong>Computer name<\/strong> m\u00e0 b\u1ea1n mu\u1ed1n thay \u0111\u1ed5i.<\/li>\n<li>4. Nh\u1ea5n <strong>Ok<\/strong> \u0111\u1ec3 l\u01b0u thay \u0111\u1ed5i.<\/li>\n<\/ul>\n<p><strong>2. \u0110\u1ed5i Hostname b\u1eb1ng CMD (Alternative)<\/strong><\/p>\n<ul>\n<li>1. <strong>B\u01b0\u1edbc 1:<\/strong> M\u1edf CMD v\u1edbi quy\u1ec1n admin (Run as administrator).<\/li>\n<li>2. <strong>B\u01b0\u1edbc 2:<\/strong> G\u00f5 d\u00f2ng l\u1ec7nh sau (thay &#8220;HOSTNAME_MOI&#8221; b\u1eb1ng hostname m\u1edbi c\u1ee7a b\u1ea1n): <code>WMIC computersystem where name=\"%computername%\" call rename name=\"HOSTNAME_MOI\"<\/code>.<\/li>\n<li>3. <strong>B\u01b0\u1edbc 3:<\/strong> <strong>Restart<\/strong> l\u1ea1i m\u00e1y t\u00ednh \u0111\u1ec3 t\u00ean m\u1edbi c\u00f3 hi\u1ec7u l\u1ef1c v\u00e0 ki\u1ec3m tra l\u1ea1i.<\/li>\n<\/ul>\n<p><strong>L\u01b0u \u00fd quan tr\u1ecdng:<\/strong> Khi ch\u1ec9nh s\u1eeda Hostname tr\u00ean Windows, b\u1ea1n <strong>kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean c\u00f3 ch\u1ee9a kho\u1ea3ng tr\u1eafng.<\/strong><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Huong-dan-tren-He-dieu-hanh-Linux-MintUbuntu\"><\/span>H\u01b0\u1edbng d\u1eabn tr\u00ean H\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux Mint\/Ubuntu<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ed1i v\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux Mint\/Ubuntu, b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm v\u00e0 thay \u0111\u1ed5i Hostname b\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n 3 b\u01b0\u1edbc \u0111\u01a1n gi\u1ea3n sau:<\/p>\n<p><strong>1. Ki\u1ec3m tra Hostname hi\u1ec7n t\u1ea1i<\/strong><\/p>\n<p>M\u1edf <strong>Terminal<\/strong> v\u00e0 ki\u1ec3m tra Host name v\u1edbi c\u00e2u l\u1ec7nh: <code>$hostname<\/code> (ho\u1eb7c <code>hostname<\/code>).<\/p>\n<p><strong>2. Ch\u1ec9nh s\u1eeda Hostname<\/strong><\/p>\n<p>Ch\u1ec9nh s\u1eeda Hostname th\u00f4ng qua tr\u00ecnh so\u1ea1n th\u1ea3o <code>vim<\/code> ho\u1eb7c <code>nano<\/code>. T\u1ec7p c\u1ea5u h\u00ecnh Hostname th\u01b0\u1eddng n\u1eb1m trong <code>\/etc\/hostname<\/code>.<\/p>\n<p>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e2u l\u1ec7nh sau v\u1edbi <code>vim<\/code> (ho\u1eb7c thay th\u1ebf b\u1eb1ng <code>nano<\/code>): <code>$sudo vim \/etc\/hostname<\/code>.<\/p>\n<p>Thay \u0111\u1ed5i t\u00ean Hostname b\u00ean trong file n\u00e0y.<\/p>\n<p><strong>3. L\u01b0u v\u00e0 \u00e1p d\u1ee5ng thay \u0111\u1ed5i<\/strong><\/p>\n<p>L\u01b0u l\u1ea1i sau khi s\u1eeda t\u00ean Host name.<\/p>\n<p>\u0110\u1ec3 thay \u0111\u1ed5i c\u00f3 hi\u1ec7u l\u1ef1c, b\u1ea1n c\u1ea7n kh\u1edfi \u0111\u1ed9ng l\u1ea1i h\u1ec7 th\u1ed1ng. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ec7nh: <code>sudo reboot<\/code>.<\/p>\n<p><strong>L\u01b0u \u00fd quan tr\u1ecdng:<\/strong> T\u01b0\u01a1ng t\u1ef1 nh\u01b0 Windows, b\u1ea1n <strong>kh\u00f4ng n\u00ean \u0111\u1eb7t t\u00ean Host name c\u00f3 ch\u1ee9a kho\u1ea3ng tr\u1eafng<\/strong>. B\u1ea1n c\u0169ng c\u1ea7n tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc \u0111\u1eb7t t\u00ean cho hostname (ch\u1ec9 ch\u1ee9a ch\u1eef c\u00e1i, s\u1ed1, d\u1ea5u g\u1ea1ch ngang, kh\u00f4ng d\u00f9ng k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t).<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Luu-y-chung-khi-su-dung-Hostname\"><\/span>L\u01b0u \u00fd chung khi s\u1eed d\u1ee5ng Hostname<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Khi s\u1eed d\u1ee5ng Hostname (t\u00ean m\u00e1y ch\u1ee7), b\u1ea1n c\u1ea7n l\u01b0u \u00fd m\u1ed9t s\u1ed1 \u0111i\u1ec3m quan tr\u1ecdng sau \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng m\u1ea1ng ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3, \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1-Tinh-duy-nhat-va-tranh-xung-dot\"><\/span>1. T\u00ednh duy nh\u1ea5t v\u00e0 tr\u00e1nh xung \u0111\u1ed9t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>T\u00ednh duy nh\u1ea5t:<\/strong> Hostname ph\u1ea3i l\u00e0 <strong>duy nh\u1ea5t<\/strong> trong m\u1ea1ng n\u1ed9i b\u1ed9 ho\u1eb7c tr\u00ean Internet (n\u1ebfu s\u1eed d\u1ee5ng DNS c\u00f4ng khai).<\/li>\n<li><strong>Tr\u00e1nh tr\u00f9ng l\u1eb7p:<\/strong> Vi\u1ec7c tr\u00e1nh tr\u00f9ng l\u1eb7p l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 kh\u00f4ng g\u00e2y xung \u0111\u1ed9t khi truy c\u1eadp.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2-Dinh-dang-hop-le-Quy-tac-dat-ten\"><\/span>2. \u0110\u1ecbnh d\u1ea1ng h\u1ee3p l\u1ec7 (Quy t\u1eafc \u0111\u1eb7t t\u00ean)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>B\u1ea1n c\u1ea7n tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc \u0111\u1eb7t t\u00ean \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ecbnh d\u1ea1ng Hostname h\u1ee3p l\u1ec7:<\/p>\n<ul>\n<li><strong>K\u00fd t\u1ef1 cho ph\u00e9p:<\/strong> Hostname ch\u1ec9 n\u00ean ch\u1ee9a c\u00e1c k\u00fd t\u1ef1 ch\u1eef c\u00e1i (a-z), s\u1ed1 (0-9), d\u1ea5u g\u1ea1ch ngang (-), v\u00e0 d\u1ea5u ch\u1ea5m (.) \u0111\u1ec3 ph\u00e2n t\u00e1ch c\u00e1c th\u00e0nh ph\u1ea7n trong t\u00ean mi\u1ec1n.<\/li>\n<li><strong>Kh\u00f4ng d\u00f9ng k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t\/kho\u1ea3ng tr\u1eafng:<\/strong> <strong>Kh\u00f4ng s\u1eed d\u1ee5ng k\u00fd t\u1ef1 \u0111\u1eb7c bi\u1ec7t<\/strong> (nh\u01b0 @, #, $) <strong>ho\u1eb7c kho\u1ea3ng tr\u1eafng<\/strong>. L\u01b0u \u00fd n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c nh\u1ea5n m\u1ea1nh c\u1ee5 th\u1ec3 khi ch\u1ec9nh s\u1eeda Hostname tr\u00ean h\u1ec7 \u0111i\u1ec1u h\u00e0nh Windows v\u00e0 Linux Mint\/Ubuntu.<\/li>\n<li><strong>\u0110\u1ed9 d\u00e0i t\u1ed1i \u0111a:<\/strong> \u0110\u1ed9 d\u00e0i t\u1ed1i \u0111a c\u1ee7a Hostname th\u01b0\u1eddng l\u00e0 255 k\u00fd t\u1ef1, nh\u01b0ng m\u1ed7i nh\u00e3n (ph\u1ea7n gi\u1eefa c\u00e1c d\u1ea5u ch\u1ea5m) kh\u00f4ng n\u00ean v\u01b0\u1ee3t qu\u00e1 63 k\u00fd t\u1ef1.<\/li>\n<\/ul>\n<figure id=\"attachment_35401\" aria-describedby=\"caption-attachment-35401\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-35401\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Luu-y-khi-su-dung-Hostname.jpg\" alt=\"L\u01b0u \u00fd khi s\u1eed d\u1ee5ng Hostname\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Luu-y-khi-su-dung-Hostname.jpg 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Luu-y-khi-su-dung-Hostname-300x188.jpg 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2025\/10\/Luu-y-khi-su-dung-Hostname-768x480.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-35401\" class=\"wp-caption-text\">L\u01b0u \u00fd khi s\u1eed d\u1ee5ng Hostname<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"3-Cau-hinh-va-Quan-ly-mang\"><\/span>3. C\u1ea5u h\u00ecnh v\u00e0 Qu\u1ea3n l\u00fd m\u1ea1ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>C\u1ea5u h\u00ecnh DNS ch\u00ednh x\u00e1c:<\/strong> C\u1ea7n \u0111\u1ea3m b\u1ea3o Hostname \u0111\u01b0\u1ee3c \u00e1nh x\u1ea1 \u0111\u00fang v\u1edbi \u0111\u1ecba ch\u1ec9 IP th\u00f4ng qua b\u1ea3n ghi DNS (A, AAAA, ho\u1eb7c CNAME).<\/li>\n<li><strong>C\u1eadp nh\u1eadt t\u1ec7p hosts:<\/strong> N\u1ebfu s\u1eed d\u1ee5ng trong m\u1ea1ng n\u1ed9i b\u1ed9, c\u1ea7n c\u1eadp nh\u1eadt t\u1ec7p <code>\/etc\/hosts<\/code> (tr\u00ean Linux) ho\u1eb7c t\u1ec7p t\u01b0\u01a1ng \u0111\u01b0\u01a1ng tr\u00ean c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh kh\u00e1c.<\/li>\n<li><strong>Qu\u1ea3n l\u00fd trong m\u00f4i tr\u01b0\u1eddng l\u1edbn:<\/strong> Trong c\u00e1c t\u1ed5 ch\u1ee9c l\u1edbn, n\u00ean s\u1eed d\u1ee5ng <strong>quy t\u1eafc \u0111\u1eb7t t\u00ean th\u1ed1ng nh\u1ea5t<\/strong> (v\u00ed d\u1ee5: theo v\u1ecb tr\u00ed, ch\u1ee9c n\u0103ng, ho\u1eb7c b\u1ed9 ph\u1eadn: hcm-web01, sg-db02) \u0111\u1ec3 d\u1ec5 qu\u1ea3n l\u00fd.<\/li>\n<li><strong>S\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd t\u1eadp trung:<\/strong> N\u00ean s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd DNS t\u1eadp trung \u0111\u1ec3 theo d\u00f5i v\u00e0 c\u1eadp nh\u1eadt Hostname.<\/li>\n<li><strong>C\u1eadp nh\u1eadt v\u00e0 b\u1ea3o tr\u00ec:<\/strong> N\u1ebfu thay \u0111\u1ed5i \u0111\u1ecba ch\u1ec9 IP ho\u1eb7c c\u1ea5u tr\u00fac m\u1ea1ng, h\u00e3y c\u1eadp nh\u1eadt Hostname trong DNS ho\u1eb7c t\u1ec7p hosts \u0111\u1ec3 tr\u00e1nh gi\u00e1n \u0111o\u1ea1n, \u0111\u1ed3ng th\u1eddi theo d\u00f5i v\u00e0 ghi l\u1ea1i c\u00e1c Hostname \u0111\u00e3 s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u00e1nh nh\u1ea7m l\u1eabn.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"4-Tinh-de-doc-va-y-nghia\"><\/span>4. T\u00ednh d\u1ec5 \u0111\u1ecdc v\u00e0 \u00fd ngh\u0129a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>T\u00ednh d\u1ec5 \u0111\u1ecdc:<\/strong> Ch\u1ecdn Hostname c\u00f3 <strong>\u00fd ngh\u0129a, d\u1ec5 nh\u1edb<\/strong>, v\u00e0 <strong>ph\u1ea3n \u00e1nh m\u1ee5c \u0111\u00edch c\u1ee7a m\u00e1y ch\u1ee7<\/strong> (v\u00ed d\u1ee5: webserver1, db-prod, mail.company.com).<\/li>\n<li><strong>Tr\u00e1nh s\u1eed d\u1ee5ng t\u00ean kh\u00f3 hi\u1ec3u:<\/strong> Tr\u00e1nh s\u1eed d\u1ee5ng Hostname qu\u00e1 d\u00e0i ho\u1eb7c kh\u00f3 hi\u1ec3u.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"5-Bao-mat-va-tuong-thich\"><\/span>5. B\u1ea3o m\u1eadt v\u00e0 t\u01b0\u01a1ng th\u00edch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>B\u1ea3o m\u1eadt:<\/strong> Tr\u00e1nh s\u1eed d\u1ee5ng th\u00f4ng tin nh\u1ea1y c\u1ea3m (nh\u01b0 m\u1eadt kh\u1ea9u, th\u00f4ng tin c\u00e1 nh\u00e2n) trong Hostname. N\u1ebfu Hostname \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f4ng khai, h\u00e3y \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1eb1ng c\u00e1c bi\u1ec7n ph\u00e1p nh\u01b0 t\u01b0\u1eddng l\u1eeda, m\u00e3 h\u00f3a SSL\/TLS, v\u00e0 c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m th\u01b0\u1eddng xuy\u00ean.<\/li>\n<li><strong>Ki\u1ec3m tra v\u00e0 x\u00e1c minh:<\/strong> Sau khi c\u1ea5u h\u00ecnh, s\u1eed d\u1ee5ng c\u00e1c l\u1ec7nh nh\u01b0 <code>ping<\/code>, <code>nslookup<\/code>, ho\u1eb7c <code>dig<\/code> \u0111\u1ec3 ki\u1ec3m tra xem Hostname c\u00f3 ph\u00e2n gi\u1ea3i \u0111\u00fang \u0111\u1ebfn IP kh\u00f4ng. \u0110\u1ea3m b\u1ea3o Hostname ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh tr\u00ean c\u00e1c giao th\u1ee9c c\u1ea7n thi\u1ebft (HTTP, SSH, FTP, v.v.).<\/li>\n<li><strong>T\u01b0\u01a1ng th\u00edch ph\u1ea7n m\u1ec1m:<\/strong> M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng ho\u1eb7c d\u1ecbch v\u1ee5 c\u00f3 th\u1ec3 y\u00eau c\u1ea7u Hostname c\u1ee5 th\u1ec3 (v\u00ed d\u1ee5: T\u00ean mi\u1ec1n \u0111\u1ea7y \u0111\u1ee7 &#8211; FQDN) \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang. C\u1ea7n ki\u1ec3m tra t\u00e0i li\u1ec7u c\u1ee7a ph\u1ea7n m\u1ec1m \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o Hostname tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u.<\/li>\n<\/ul>\n<p>T\u00f3m l\u1ea1i, khi s\u1eed d\u1ee5ng Hostname, b\u1ea1n c\u1ea7n tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc \u0111\u1eb7t t\u00ean, tr\u00e1nh nh\u1ea7m l\u1eabn v\u1edbi Domain name, v\u00e0 \u0111\u1ea3m b\u1ea3o Hostname lu\u00f4n \u0111\u1ed9c nh\u1ea5t trong m\u1ea1ng \u0111\u1ec3 tr\u00e1nh xung \u0111\u1ed9t.Hostname .<\/p>\n<p>Qua b\u00e0i vi\u1ebft c\u1ee7a <strong><a href=\"https:\/\/interdata.vn\/\">InterData<\/a><\/strong>, b\u1ea1n kh\u00f4ng ch\u1ec9 tr\u1ea3 l\u1eddi \u0111\u01b0\u1ee3c c\u00e2u h\u1ecfi Hostname l\u00e0 g\u00ec m\u00e0 c\u00f2n n\u1eafm v\u1eefng \u0111\u01b0\u1ee3c vai tr\u00f2, c\u1ea5u tr\u00fac v\u00e0 c\u00e1ch \u0111\u1ec3 ki\u1ec3m tra, thay \u0111\u1ed5i Hostname m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n nh\u1ea5t.<\/p>\n<p>Hostname kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u00e1i t\u00ean, m\u00e0 l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n \u0111\u1ecbnh danh n\u1ec1n t\u1ea3ng, \u0111\u1ea3m b\u1ea3o s\u1ef1 giao ti\u1ebfp m\u1ea1ch l\u1ea1c v\u00e0 \u1ed5n \u0111\u1ecbnh trong th\u1ebf gi\u1edbi m\u1ea1ng. Vi\u1ec7c hi\u1ec3u \u0111\u00fang v\u00e0 c\u1ea5u h\u00ecnh ch\u00ednh x\u00e1c Hostname l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng quan tr\u1ecdng gi\u00fap h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n v\u1eadn h\u00e0nh tr\u01a1n tru v\u00e0 an to\u00e0n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hostname\u00a0l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m t\u01b0\u1edfng ch\u1eebng \u0111\u01a1n gi\u1ea3n nh\u01b0ng l\u1ea1i \u0111\u00f3ng vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ecbnh danh v\u00e0 qu\u1ea3n l\u00fd thi\u1ebft b\u1ecb trong m\u1ea1ng m\u00e1y t\u00ednh. C\u00f9ng InterData t\u00ecm hi\u1ec3u Hostname l\u00e0 g\u00ec, t\u1eeb vai tr\u00f2, ph\u00e2n bi\u1ec7t Hostname v\u1edbi c\u00e1c kh\u00e1i ni\u1ec7m nh\u01b0 Domain Name, FQDN, \u0111\u1ecba ch\u1ec9 IP, c\u00e1ch<\/p>\n","protected":false},"author":11,"featured_media":35403,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[151],"tags":[],"class_list":["post-35398","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mang"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/35398","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\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=35398"}],"version-history":[{"count":4,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/35398\/revisions"}],"predecessor-version":[{"id":35407,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/35398\/revisions\/35407"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/35403"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=35398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=35398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=35398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}