{"id":10079,"date":"2023-05-31T14:21:07","date_gmt":"2023-05-31T07:21:07","guid":{"rendered":"https:\/\/idconline.vn\/blog\/?p=10079"},"modified":"2023-06-06T15:14:01","modified_gmt":"2023-06-06T08:14:01","slug":"cach-thiet-lap-va-dinh-cau-hinh-ntp-tren-cloud-vps-cua-ban","status":"publish","type":"post","link":"https:\/\/idconline.vn\/blog\/cach-thiet-lap-va-dinh-cau-hinh-ntp-tren-cloud-vps-cua-ban\/","title":{"rendered":"C\u00e1ch thi\u1ebft l\u1eadp v\u00e0 \u0111\u1ecbnh c\u1ea5u h\u00ecnh NTP tr\u00ean Cloud VPS c\u1ee7a b\u1ea1n"},"content":{"rendered":"\n<p><strong>NTP l\u00e0 g\u00ec?<\/strong>&nbsp;Kh\u00e1i ni\u1ec7m kh\u00e1 quen v\u1edbi d\u00e2n c\u00f4ng ngh\u1ec7 th\u00f4ng tin, Code\u2026 Nh\u01b0ng \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi ng\u01b0\u1eddi b\u01b0\u1edbc v\u00e0o t\u00ecm hi\u1ec3u th\u00ec l\u00e0 kh\u00e1i ni\u1ec7m kh\u00e1 l\u1ea1 l\u1eabm. V\u1eady n\u1ebfu b\u1ea1n \u0111ang t\u00ecm hi\u1ec3u NTP, c\u00f9ng IDC t\u00ecm hi\u1ec3u c\u00e1ch thi\u1ebft l\u1eadp v\u00e0 \u0111\u1ecbnh c\u1ea5u h\u00ecnh NTP tr\u00ean Cloud VPS.<\/p>\n\n\n\n<div id=\"toc_container\" class=\"toc_white no_bullets\"><p class=\"toc_title\">M\u1ee5c l\u1ee5c<\/p><ul class=\"toc_list\"><li><a href=\"#NTP_la_gi\">NTP l\u00e0 g\u00ec?<\/a><\/li><li><a href=\"#1_Dang_nhap_vao_Cloud_VPS_cua_ban_qua_giao_dien_quan_ly_hoac_ket_noi_SSH\">1. \u0110\u0103ng nh\u1eadp v\u00e0o Cloud VPS c\u1ee7a b\u1ea1n qua giao di\u1ec7n qu\u1ea3n l\u00fd ho\u1eb7c k\u1ebft n\u1ed1i SSH.<\/a><\/li><li><a href=\"#2_Kiem_tra_xem_goi_ntp_da_duoc_cai_dat_hay_chua_bang_cach_chay_lenh_sau\">2. Ki\u1ec3m tra xem g\u00f3i ntp \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t hay ch\u01b0a b\u1eb1ng c\u00e1ch ch\u1ea1y l\u1ec7nh sau:<\/a><\/li><li><a href=\"#3_Sau_khi_cai_dat_thanh_cong_mo_tep_cau_hinh_NTP_bang_trinh_soan_thao_van_ban\">3. Sau khi c\u00e0i \u0111\u1eb7t th\u00e0nh c\u00f4ng, m\u1edf t\u1ec7p c\u1ea5u h\u00ecnh NTP b\u1eb1ng tr\u00ecnh so\u1ea1n th\u1ea3o v\u0103n b\u1ea3n.<\/a><\/li><li><a href=\"#4_Trong_tep_cau_hinh_NTP_ban_co_the_chinh_sua_cac_may_chu_NTP_ma_ban_muon_su_dung\">4. Trong t\u1ec7p c\u1ea5u h\u00ecnh NTP, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ec9nh s\u1eeda c\u00e1c m\u00e1y ch\u1ee7 NTP m\u00e0 b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng.<\/a><\/li><li><a href=\"#5_Luu_thay_doi_va_dong_tep_cau_hinh_NTP\">5. L\u01b0u thay \u0111\u1ed5i v\u00e0 \u0111\u00f3ng t\u1ec7p c\u1ea5u h\u00ecnh NTP.<\/a><\/li><li><a href=\"#6_Khoi_dong_lai_dich_vu_NTP_de_ap_dung_cau_hinh_moi\">6. Kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch v\u1ee5 NTP \u0111\u1ec3 \u00e1p d\u1ee5ng c\u1ea5u h\u00ecnh m\u1edbi:<\/a><\/li><li><a href=\"#7_Kiem_tra_trang_thai_va_thoi_gian_dong_bo_bang_cach_chay_lenh\">7. Ki\u1ec3m tra tr\u1ea1ng th\u00e1i v\u00e0 th\u1eddi gian \u0111\u1ed3ng b\u1ed9 b\u1eb1ng c\u00e1ch ch\u1ea1y l\u1ec7nh:<\/a><\/li><li><a href=\"#ket_Luan\">k\u1ebft Lu\u1eadn:<\/a><\/li><\/ul><\/div>\n<h2 class=\"wp-block-heading\"><span id=\"NTP_la_gi\"><strong>NTP l\u00e0 g\u00ec?<\/strong><\/span><\/h2>\n\n\n\n<p><strong>Network Time Protocol (NTP)<\/strong>&nbsp;l\u00e0 m\u1ed9t giao th\u1ee9c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ed3ng b\u1ed9 h\u00f3a th\u1eddi gian \u0111\u1ed3ng h\u1ed3 c\u1ee7a m\u00e1y t\u00ednh trong m\u1ea1ng . N\u00f3 thu\u1ed9c v\u1ec1 v\u00e0 l\u00e0 m\u1ed9t trong nh\u1eefng ph\u1ea7n l\u00e2u \u0111\u1eddi nh\u1ea5t c\u1ee7a b\u1ed9 giao th\u1ee9c TCP\/IP. Thu\u1eadt ng\u1eef NTP \u00e1p d\u1ee5ng cho c\u1ea3 giao th\u1ee9c v\u00e0 c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh m\u00e1y kh\u00e1ch-m\u00e1y ch\u1ee7 ch\u1ea1y tr\u00ean m\u00e1y t\u00ednh. NTP, \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi David Mills t\u1ea1i \u0110\u1ea1i h\u1ecdc Delaware v\u00e0o n\u0103m 1981. \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i cao v\u00e0 c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/idconline.vn\/blog\/wp-content\/uploads\/2023\/05\/khai-niem-ntp-server-la-gi.jpg\" alt=\"\" class=\"wp-image-10081\" width=\"823\" height=\"617\" srcset=\"https:\/\/idconline.vn\/blog\/wp-content\/uploads\/2023\/05\/khai-niem-ntp-server-la-gi.jpg 640w, https:\/\/idconline.vn\/blog\/wp-content\/uploads\/2023\/05\/khai-niem-ntp-server-la-gi-300x225.jpg 300w\" sizes=\"(max-width: 823px) 100vw, 823px\" \/><\/figure>\n\n\n\n<p>Xem th\u00eam: <a href=\"https:\/\/idconline.vn\/blog\/cloud-vps-cho-doanh-nghiep-huong-dan-toan-dien.html\" target=\"_blank\" rel=\"noreferrer noopener\">Cloud VPS cho doanh nghi\u1ec7p: H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n<\/a><\/p>\n\n\n\n<p><strong><em>\u0110\u1ec3 thi\u1ebft l\u1eadp v\u00e0 c\u1ea5u h\u00ecnh NTP (Network Time Protocol) tr\u00ean Cloud VPS c\u1ee7a b\u1ea1n, b\u1ea1n c\u00f3 th\u1ec3 l\u00e0m theo c\u00e1c b\u01b0\u1edbc sau:<\/em><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"1_Dang_nhap_vao_Cloud_VPS_cua_ban_qua_giao_dien_quan_ly_hoac_ket_noi_SSH\">1. \u0110\u0103ng nh\u1eadp v\u00e0o <a href=\"https:\/\/idconline.vn\/cloud-vps\" target=\"_blank\" rel=\"noreferrer noopener\">Cloud VPS<\/a> c\u1ee7a b\u1ea1n qua giao di\u1ec7n qu\u1ea3n l\u00fd ho\u1eb7c k\u1ebft n\u1ed1i SSH.<\/span><\/h2>\n\n\n\n<p>\u0110\u1ec3 \u0111\u0103ng nh\u1eadp v\u00e0o m\u1ed9t Cloud VPS th\u00f4ng qua giao di\u1ec7n qu\u1ea3n l\u00fd ho\u1eb7c k\u1ebft n\u1ed1i SSH. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1ch th\u1ef1c hi\u1ec7n:<\/p>\n\n\n\n<ol>\n<li>Giao di\u1ec7n qu\u1ea3n l\u00fd: M\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 Cloud cung c\u1ea5p giao di\u1ec7n qu\u1ea3n l\u00fd tr\u1ef1c quan. \u0110\u1ec3 qu\u1ea3n l\u00fd v\u00e0 \u0111i\u1ec1u khi\u1ec3n c\u00e1c m\u00e1y \u1ea3o c\u1ee7a b\u1ea1n. B\u1ea1n c\u1ea7n truy c\u1eadp v\u00e0o giao di\u1ec7n qu\u1ea3n l\u00fd c\u1ee7a nh\u00e0 cung c\u1ea5p, \u0111\u0103ng nh\u1eadp b\u1eb1ng th\u00f4ng tin \u0111\u0103ng nh\u1eadp t\u00e0i kho\u1ea3n. T\u1ea1i \u0111\u00e2y, b\u1ea1n s\u1ebd c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y danh s\u00e1ch m\u00e1y \u1ea3o (VPS) c\u1ee7a b\u1ea1n. V\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c v\u1ee5 nh\u01b0 kh\u1edfi \u0111\u1ed9ng, t\u1eaft ho\u1eb7c qu\u1ea3n l\u00fd k\u1ebft n\u1ed1i v\u00e0o VPS.<\/li>\n\n\n\n<li>K\u1ebft n\u1ed1i SSH: \u0110\u1ec3 k\u1ebft n\u1ed1i v\u00e0o Cloud VPS b\u1eb1ng SSH. B\u1ea1n c\u1ea7n c\u00f3 m\u1ed9t ph\u1ea7n m\u1ec1m SSH client nh\u01b0 OpenSSH tr\u00ean m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n. B\u1ea1n s\u1ebd s\u1eed d\u1ee5ng c\u00e1c th\u00f4ng tin \u0111\u0103ng nh\u1eadp \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi nh\u00e0 cung c\u1ea5p Cloud. (Bao g\u1ed3m \u0111\u1ecba ch\u1ec9 IP, t\u00ean ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u1eadt kh\u1ea9u) \u0111\u1ec3 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i SSH. D\u00f9ng l\u1ec7nh sau:cssCopy code<code>ssh username@ip_address <\/code>Trong \u0111\u00f3 <code>username<\/code> l\u00e0 t\u00ean ng\u01b0\u1eddi d\u00f9ng c\u1ee7a b\u1ea1n tr\u00ean VPS v\u00e0 <code>ip_address<\/code> l\u00e0 \u0111\u1ecba ch\u1ec9 IP c\u1ee7a VPS. B\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c nh\u1eafc nh\u1eadp m\u1eadt kh\u1ea9u sau khi ch\u1ea1y l\u1ec7nh n\u00e0y.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"2_Kiem_tra_xem_goi_ntp_da_duoc_cai_dat_hay_chua_bang_cach_chay_lenh_sau\">2. Ki\u1ec3m tra xem g\u00f3i ntp \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t hay ch\u01b0a b\u1eb1ng c\u00e1ch ch\u1ea1y l\u1ec7nh sau:<\/span><\/h2>\n\n\n\n<p>\u0110\u1ec3 ki\u1ec3m tra xem g\u00f3i <code>ntp<\/code> \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t hay ch\u01b0a b\u1eb1ng c\u00e1ch ch\u1ea1y l\u1ec7nh, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ec7nh sau tr\u00ean h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">Copy code<code>dpkg -s ntp\n<\/code><\/pre>\n\n\n\n<p>L\u1ec7nh tr\u00ean s\u1ebd ki\u1ec3m tra tr\u1ea1ng th\u00e1i c\u1ee7a g\u00f3i <code>ntp<\/code> trong h\u1ec7 th\u1ed1ng. N\u1ebfu g\u00f3i \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t, th\u00f4ng tin v\u1ec1 g\u00f3i s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb. N\u1ebfu g\u00f3i ch\u01b0a \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c th\u00f4ng b\u00e1o l\u1ed7i ho\u1eb7c kh\u00f4ng c\u00f3 th\u00f4ng tin v\u1ec1 g\u00f3i.<\/p>\n\n\n\n<p>L\u01b0u \u00fd r\u1eb1ng l\u1ec7nh tr\u00ean ch\u1ec9 \u00e1p d\u1ee5ng cho h\u1ec7 \u0111i\u1ec1u h\u00e0nh s\u1eed d\u1ee5ng g\u00f3i qu\u1ea3n l\u00fd d\u1ef1a tr\u00ean. Debian nh\u01b0 Ubuntu, Debian v\u00e0 c\u00e1c phi\u00ean b\u1ea3n t\u01b0\u01a1ng t\u1ef1. \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 \u0111i\u1ec1u h\u00e0nh kh\u00e1c, b\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 qu\u1ea3n l\u00fd g\u00f3i t\u01b0\u01a1ng \u1ee9ng, v\u00ed d\u1ee5 nh\u01b0 <code>yum<\/code> tr\u00ean CentOS ho\u1eb7c <code>zypper<\/code> tr\u00ean openSUSE.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"3_Sau_khi_cai_dat_thanh_cong_mo_tep_cau_hinh_NTP_bang_trinh_soan_thao_van_ban\">3. Sau khi c\u00e0i \u0111\u1eb7t th\u00e0nh c\u00f4ng, m\u1edf t\u1ec7p c\u1ea5u h\u00ecnh NTP b\u1eb1ng tr\u00ecnh so\u1ea1n th\u1ea3o v\u0103n b\u1ea3n.<\/span><\/h2>\n\n\n\n<p>Sau khi c\u00e0i \u0111\u1eb7t th\u00e0nh c\u00f4ng g\u00f3i <code>ntp<\/code>, b\u1ea1n c\u00f3 th\u1ec3 m\u1edf t\u1ec7p c\u1ea5u h\u00ecnh NTP b\u1eb1ng tr\u00ecnh so\u1ea1n th\u1ea3o v\u0103n b\u1ea3n nh\u01b0 <code>nano<\/code> ho\u1eb7c <code>vi<\/code>. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t v\u00ed d\u1ee5 s\u1eed d\u1ee5ng tr\u00ecnh so\u1ea1n th\u1ea3o <code>nano<\/code>:<\/p>\n\n\n\n<ol>\n<li>M\u1edf t\u1ec7p c\u1ea5u h\u00ecnh NTP b\u1eb1ng l\u1ec7nh sau:bashCopy code<code>sudo nano \/etc\/ntp.conf<\/code><\/li>\n\n\n\n<li>L\u1ec7nh tr\u00ean s\u1ebd m\u1edf t\u1ec7p c\u1ea5u h\u00ecnh NTP (<code>ntp.conf<\/code>) trong tr\u00ecnh so\u1ea1n th\u1ea3o <code>nano<\/code> v\u1edbi quy\u1ec1n root (\u0111\u1ec3 c\u00f3 quy\u1ec1n ch\u1ec9nh s\u1eeda). B\u1ea1n s\u1ebd th\u1ea5y n\u1ed9i dung c\u1ee7a t\u1ec7p c\u1ea5u h\u00ecnh hi\u1ec3n th\u1ecb tr\u00ean m\u00e0n h\u00ecnh.<\/li>\n\n\n\n<li>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c ph\u00edm m\u0169i t\u00ean v\u00e0 ph\u00edm m\u0169i t\u00ean xu\u1ed1ng tr\u00ean b\u00e0n ph\u00edm. \u0110\u1ec3 di chuy\u1ec3n trong t\u1ec7p c\u1ea5u h\u00ecnh v\u00e0 th\u1ef1c hi\u1ec7n ch\u1ec9nh s\u1eeda.<\/li>\n\n\n\n<li>Khi b\u1ea1n \u0111\u00e3 ho\u00e0n th\u00e0nh ch\u1ec9nh s\u1eeda, b\u1ea1n c\u00f3 th\u1ec3 l\u01b0u t\u1ec7p c\u1ea5u h\u00ecnh b\u1eb1ng c\u00e1ch nh\u1ea5n <code>Ctrl + O<\/code>, sau \u0111\u00f3 nh\u1ea5n Enter \u0111\u1ec3 x\u00e1c nh\u1eadn. \u0110\u1ec3 tho\u00e1t kh\u1ecfi tr\u00ecnh so\u1ea1n th\u1ea3o <code>nano<\/code>, nh\u1ea5n <code>Ctrl + X<\/code>.<\/li>\n<\/ol>\n\n\n\n<p>L\u01b0u \u00fd r\u1eb1ng vi\u1ec7c s\u1eed d\u1ee5ng tr\u00ecnh so\u1ea1n th\u1ea3o <code>nano<\/code> l\u00e0 m\u1ed9t v\u00ed d\u1ee5. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng tr\u00ecnh so\u1ea1n th\u1ea3o v\u0103n b\u1ea3n kh\u00e1c n\u1ebfu b\u1ea1n \u0111\u00e3 quen thu\u1ed9c v\u1edbi n\u00f3, nh\u01b0 <code>vi<\/code> ho\u1eb7c <code>vim<\/code>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/idconline.vn\/blog\/wp-content\/uploads\/2023\/05\/hoat-dong-ntp-server-la-gi.jpg\" alt=\"\" class=\"wp-image-10082\" width=\"839\" height=\"493\" srcset=\"https:\/\/idconline.vn\/blog\/wp-content\/uploads\/2023\/05\/hoat-dong-ntp-server-la-gi.jpg 640w, https:\/\/idconline.vn\/blog\/wp-content\/uploads\/2023\/05\/hoat-dong-ntp-server-la-gi-300x176.jpg 300w\" sizes=\"(max-width: 839px) 100vw, 839px\" \/><\/figure>\n\n\n\n<p>Xem th\u00eam: <a href=\"https:\/\/idconline.vn\/blog\/cloud-vps-cho-web-marketing-huong-dan-toan-dien.html\" target=\"_blank\" rel=\"noreferrer noopener\">Cloud VPS cho Web Marketing: H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"4_Trong_tep_cau_hinh_NTP_ban_co_the_chinh_sua_cac_may_chu_NTP_ma_ban_muon_su_dung\">4. Trong t\u1ec7p c\u1ea5u h\u00ecnh NTP, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ec9nh s\u1eeda c\u00e1c m\u00e1y ch\u1ee7 NTP m\u00e0 b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng.<\/span><\/h2>\n\n\n\n<p>trong t\u1ec7p c\u1ea5u h\u00ecnh NTP (<code>ntp.conf<\/code>), b\u1ea1n c\u00f3 th\u1ec3 ch\u1ec9nh s\u1eeda v\u00e0 th\u00eam c\u00e1c m\u00e1y ch\u1ee7 NTP m\u00e0 b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u1ed3ng b\u1ed9 th\u1eddi gian tr\u00ean m\u00e1y ch\u1ee7 c\u1ee7a m\u00ecnh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 c\u00e1ch ch\u1ec9nh s\u1eeda t\u1ec7p c\u1ea5u h\u00ecnh NTP:<\/p>\n\n\n\n<ol>\n<li>M\u1edf t\u1ec7p c\u1ea5u h\u00ecnh NTP b\u1eb1ng tr\u00ecnh so\u1ea1n th\u1ea3o v\u0103n b\u1ea3n. V\u00ed d\u1ee5, s\u1eed d\u1ee5ng tr\u00ecnh so\u1ea1n th\u1ea3o <code>nano<\/code>:bashCopy code<code>sudo nano \/etc\/ntp.conf<\/code><\/li>\n\n\n\n<li>Trong t\u1ec7p c\u1ea5u h\u00ecnh, b\u1ea1n s\u1ebd th\u1ea5y m\u1ed9t danh s\u00e1ch c\u00e1c m\u00e1y ch\u1ee7 NTP m\u1eabu. Ch\u00fang c\u00f3 th\u1ec3 c\u00f3 d\u1ea1ng nh\u01b0 sau:Copy code<code>server 0.pool.ntp.org server 1.pool.ntp.org server 2.pool.ntp.org<\/code><\/li>\n\n\n\n<li>B\u1ea1n c\u00f3 th\u1ec3 ch\u1ec9nh s\u1eeda c\u00e1c m\u00e1y ch\u1ee7 NTP hi\u1ec7n c\u00f3 ho\u1eb7c th\u00eam c\u00e1c m\u00e1y ch\u1ee7 m\u1edbi v\u00e0o danh s\u00e1ch. B\u1ea1n c\u00f3 th\u1ec3 s\u1eeda \u0111\u1ed5i c\u00e1c m\u00e1y ch\u1ee7 NTP hi\u1ec7n c\u00f3 b\u1eb1ng c\u00e1ch thay th\u1ebf \u0111\u1ecba ch\u1ec9 IP. Ho\u1eb7c t\u00ean m\u00e1y ch\u1ee7 b\u1eb1ng m\u00e1y ch\u1ee7 NTP mong mu\u1ed1n.<\/li>\n\n\n\n<li>\u0110\u1ec3 th\u00eam m\u00e1y ch\u1ee7 NTP m\u1edbi, b\u1ea1n c\u00f3 th\u1ec3 sao ch\u00e9p d\u00f2ng m\u00e1y ch\u1ee7 NTP m\u1eabu. V\u00e0 ch\u1ec9nh s\u1eeda \u0111\u1ecba ch\u1ec9 IP ho\u1eb7c t\u00ean m\u00e1y ch\u1ee7 m\u1edbi. V\u00ed d\u1ee5:Copy code<code>server ntp.example.com<\/code><\/li>\n\n\n\n<li>Ngo\u00e0i ra, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c m\u00e1y ch\u1ee7 NTP c\u1ee5 th\u1ec3 kh\u00e1c t\u00f9y theo y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n. C\u00e1c m\u00e1y ch\u1ee7 NTP kh\u00e1c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y tr\u00ean Internet. Ho\u1eb7c \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi t\u1ed5 ch\u1ee9c ho\u1eb7c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 NTP.<\/li>\n\n\n\n<li>L\u01b0u thay \u0111\u1ed5i v\u00e0 \u0111\u00f3ng t\u1ec7p c\u1ea5u h\u00ecnh NTP khi b\u1ea1n \u0111\u00e3 ho\u00e0n th\u00e0nh ch\u1ec9nh s\u1eeda.<\/li>\n\n\n\n<li>Kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch v\u1ee5 NTP \u0111\u1ec3 \u00e1p d\u1ee5ng c\u1ea5u h\u00ecnh m\u1edbi:Copy code<code>sudo service ntp restart<\/code><\/li>\n<\/ol>\n\n\n\n<p>Sau khi b\u1ea1n \u0111\u00e3 ch\u1ec9nh s\u1eeda t\u1ec7p c\u1ea5u h\u00ecnh NTP theo y\u00eau c\u1ea7u c\u1ee7a m\u00ecnh. M\u00e1y ch\u1ee7 s\u1ebd s\u1eed d\u1ee5ng c\u00e1c m\u00e1y ch\u1ee7 NTP b\u1ea1n \u0111\u00e3 c\u1ea5u h\u00ecnh \u0111\u1ec3 \u0111\u1ed3ng b\u1ed9 th\u1eddi gian.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"5_Luu_thay_doi_va_dong_tep_cau_hinh_NTP\">5. L\u01b0u thay \u0111\u1ed5i v\u00e0 \u0111\u00f3ng t\u1ec7p c\u1ea5u h\u00ecnh NTP.<\/span><\/h2>\n\n\n\n<p>\u0110\u1ec3 l\u01b0u thay \u0111\u1ed5i v\u00e0 \u0111\u00f3ng t\u1ec7p c\u1ea5u h\u00ecnh NTP sau khi b\u1ea1n \u0111\u00e3 ho\u00e0n th\u00e0nh ch\u1ec9nh s\u1eeda. B\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/p>\n\n\n\n<ol>\n<li>Trong tr\u00ecnh so\u1ea1n th\u1ea3o v\u0103n b\u1ea3n (v\u00ed d\u1ee5: <code>nano<\/code>), nh\u1ea5n <code>Ctrl + O<\/code> \u0111\u1ec3 l\u01b0u t\u1ec7p.<\/li>\n\n\n\n<li>Tr\u00ecnh so\u1ea1n th\u1ea3o s\u1ebd hi\u1ec3n th\u1ecb m\u1ed9t prompt \u0111\u1ec3 x\u00e1c nh\u1eadn t\u00ean t\u1ec7p. M\u1eb7c \u0111\u1ecbnh s\u1ebd l\u00e0 \u0111\u01b0\u1eddng d\u1eabn t\u1ec7p c\u1ea5u h\u00ecnh NTP m\u00e0 b\u1ea1n \u0111\u00e3 m\u1edf. B\u1ea1n c\u00f3 th\u1ec3 x\u00e1c nh\u1eadn t\u00ean t\u1ec7p b\u1eb1ng c\u00e1ch nh\u1ea5n Enter.<\/li>\n\n\n\n<li>Sau khi l\u01b0u thay \u0111\u1ed5i, nh\u1ea5n <code>Ctrl + X<\/code> \u0111\u1ec3 tho\u00e1t kh\u1ecfi tr\u00ecnh so\u1ea1n th\u1ea3o v\u0103n b\u1ea3n.<\/li>\n<\/ol>\n\n\n\n<p>L\u01b0u \u00fd r\u1eb1ng c\u00e1c b\u01b0\u1edbc tr\u00ean d\u1ef1a tr\u00ean vi\u1ec7c s\u1eed d\u1ee5ng tr\u00ecnh so\u1ea1n th\u1ea3o <code>nano<\/code>. N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng tr\u00ecnh so\u1ea1n th\u1ea3o kh\u00e1c nh\u01b0 <code>vi<\/code> ho\u1eb7c <code>vim<\/code>, c\u00e1c ph\u00edm t\u1eaft v\u00e0 quy tr\u00ecnh c\u00f3 th\u1ec3 kh\u00e1c. H\u00e3y tham kh\u1ea3o t\u00e0i li\u1ec7u c\u1ee7a tr\u00ecnh so\u1ea1n th\u1ea3o c\u1ee5 th\u1ec3 \u0111\u1ec3 bi\u1ebft th\u00eam chi ti\u1ebft.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"6_Khoi_dong_lai_dich_vu_NTP_de_ap_dung_cau_hinh_moi\">6. Kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch v\u1ee5 NTP \u0111\u1ec3 \u00e1p d\u1ee5ng c\u1ea5u h\u00ecnh m\u1edbi:<\/span><\/h2>\n\n\n\n<p>\u0110\u1ec3 kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch v\u1ee5 NTP v\u00e0 \u00e1p d\u1ee5ng c\u1ea5u h\u00ecnh m\u1edbi. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c l\u1ec7nh d\u01b0\u1edbi \u0111\u00e2y t\u00f9y thu\u1ed9c v\u00e0o h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u1ee7a b\u1ea1n:<\/p>\n\n\n\n<ol>\n<li>H\u1ec7 \u0111i\u1ec1u h\u00e0nh s\u1eed d\u1ee5ng systemd (v\u00ed d\u1ee5: Ubuntu 16.04 tr\u1edf l\u00ean):Copy code<code>sudo systemctl restart ntp<\/code><\/li>\n\n\n\n<li>H\u1ec7 \u0111i\u1ec1u h\u00e0nh s\u1eed d\u1ee5ng SysV init (v\u00ed d\u1ee5: CentOS 6, Ubuntu 14.04):Copy code<code>sudo service ntp restart<\/code><\/li>\n<\/ol>\n\n\n\n<p>L\u01b0u \u00fd r\u1eb1ng b\u1ea1n c\u1ea7n c\u00f3 quy\u1ec1n qu\u1ea3n tr\u1ecb (th\u00f4ng qua sudo ho\u1eb7c root) \u0111\u1ec3 th\u1ef1c hi\u1ec7n l\u1ec7nh kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch v\u1ee5.<\/p>\n\n\n\n<p>Sau khi b\u1ea1n \u0111\u00e3 kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch v\u1ee5 NTP, c\u1ea5u h\u00ecnh m\u1edbi s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0 m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n. S\u1ebd s\u1eed d\u1ee5ng c\u00e1c m\u00e1y ch\u1ee7 NTP \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u1ec3 \u0111\u1ed3ng b\u1ed9 th\u1eddi gian.<\/p>\n\n\n\n<p>Xem th\u00eam: <a href=\"https:\/\/idconline.vn\/blog\/cho-thue-may-chu-ao-gia-re-cloud-vps-gia-re-ssd-toc-do-cao.html\" target=\"_blank\" rel=\"noreferrer noopener\">Cho thu\u00ea m\u00e1y ch\u1ee7 \u1ea3o gi\u00e1 r\u1ebb, Cloud VPS gi\u00e1 r\u1ebb SSD t\u1ed1c \u0111\u1ed9 cao<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"7_Kiem_tra_trang_thai_va_thoi_gian_dong_bo_bang_cach_chay_lenh\">7. Ki\u1ec3m tra tr\u1ea1ng th\u00e1i v\u00e0 th\u1eddi gian \u0111\u1ed3ng b\u1ed9 b\u1eb1ng c\u00e1ch ch\u1ea1y l\u1ec7nh:<\/span><\/h2>\n\n\n\n<p>\u0110\u1ec3 ki\u1ec3m tra tr\u1ea1ng th\u00e1i v\u00e0 th\u1eddi gian \u0111\u1ed3ng b\u1ed9 c\u1ee7a m\u00e1y ch\u1ee7 NTP. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c l\u1ec7nh d\u01b0\u1edbi \u0111\u00e2y t\u00f9y thu\u1ed9c v\u00e0o h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u1ee7a b\u1ea1n:<\/p>\n\n\n\n<ol>\n<li>H\u1ec7 \u0111i\u1ec1u h\u00e0nh s\u1eed d\u1ee5ng systemd (v\u00ed d\u1ee5: Ubuntu 16.04 tr\u1edf l\u00ean):luaCopy code<code>timedatectl status <\/code>L\u1ec7nh tr\u00ean s\u1ebd hi\u1ec3n th\u1ecb th\u00f4ng tin chi ti\u1ebft v\u1ec1 tr\u1ea1ng th\u00e1i v\u00e0 th\u1eddi gian \u0111\u1ed3ng b\u1ed9 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n\n\n\n<li>H\u1ec7 \u0111i\u1ec1u h\u00e0nh s\u1eed d\u1ee5ng SysV init (v\u00ed d\u1ee5: CentOS 6, Ubuntu 14.04):cssCopy code<code>ntpq -p <\/code>L\u1ec7nh tr\u00ean s\u1ebd hi\u1ec3n th\u1ecb danh s\u00e1ch c\u00e1c m\u00e1y ch\u1ee7 NTP \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh v\u00e0 th\u00f4ng tin v\u1ec1 th\u1eddi gian \u0111\u1ed3ng b\u1ed9.<\/li>\n<\/ol>\n\n\n\n<p>Th\u00f4ng qua l\u1ec7nh tr\u00ean, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c th\u00f4ng tin v\u1ec1 tr\u1ea1ng th\u00e1i \u0111\u1ed3ng b\u1ed9 (nh\u01b0 &#8220;synchronized&#8221; n\u1ebfu m\u00e1y ch\u1ee7 \u0111\u00e3 \u0111\u1ed3ng b\u1ed9). V\u00e0 th\u00f4ng tin v\u1ec1 c\u00e1c m\u00e1y ch\u1ee7 NTP hi\u1ec7n t\u1ea1i v\u00e0 th\u1eddi gian \u0111\u1ed3ng b\u1ed9 c\u1ee7a ch\u00fang.<\/p>\n\n\n\n<p>L\u01b0u \u00fd r\u1eb1ng b\u1ea1n c\u1ea7n c\u00f3 quy\u1ec1n qu\u1ea3n tr\u1ecb (th\u00f4ng qua sudo ho\u1eb7c root) \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c l\u1ec7nh tr\u00ean.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span id=\"ket_Luan\">k\u1ebft Lu\u1eadn:<\/span><\/h2>\n\n\n\n<p>Qua c\u00e1c b\u01b0\u1edbc tr\u00ean, b\u1ea1n \u0111\u00e3 thi\u1ebft l\u1eadp v\u00e0 c\u1ea5u h\u00ecnh NTP tr\u00ean Cloud VPS c\u1ee7a m\u00ecnh. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p m\u00e1y ch\u1ee7 c\u1ee7a b\u1ea1n \u0111\u1ed3ng b\u1ed9 th\u1eddi gian v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 NTP. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed3ng b\u1ed9 th\u1eddi gian trong h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p>N\u1ebfu c\u00f2n th\u1eafc m\u1eafc, h\u00e3y \u0111\u1ebfn&nbsp;<a href=\"https:\/\/idconline.vn\/\">IDC Online<\/a>&nbsp;ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i \u0111\u00e1p nh\u00e9!<\/p>\n\n\n\n<p>M\u1eddi b\u1ea1n tham kh\u1ea3o th\u00eam b\u00e0i vi\u1ebft kh\u00e1c t\u1ea1i\u00a0IDC Online\u00a0trang chuy\u00ean chia s\u1ebb ki\u1ebfn th\u1ee9c.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NTP l\u00e0 g\u00ec?&nbsp;Kh\u00e1i ni\u1ec7m kh\u00e1 quen v\u1edbi d\u00e2n c\u00f4ng ngh\u1ec7 th\u00f4ng tin, Code\u2026 Nh\u01b0ng \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi ng\u01b0\u1eddi b\u01b0\u1edbc v\u00e0o t\u00ecm hi\u1ec3u th\u00ec l\u00e0 kh\u00e1i ni\u1ec7m kh\u00e1 l\u1ea1 l\u1eabm. V\u1eady n\u1ebfu b\u1ea1n \u0111ang t\u00ecm hi\u1ec3u NTP, c\u00f9ng IDC t\u00ecm hi\u1ec3u c\u00e1ch thi\u1ebft l\u1eadp v\u00e0 \u0111\u1ecbnh c\u1ea5u h\u00ecnh NTP tr\u00ean Cloud VPS. M\u1ee5c l\u1ee5cNTP l\u00e0 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":10081,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[46,37,66,81,41,65,12,90,28,83,70,67,47],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.10 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u00e1ch thi\u1ebft l\u1eadp v\u00e0 \u0111\u1ecbnh c\u1ea5u h\u00ecnh NTP tr\u00ean Cloud VPS c\u1ee7a b\u1ea1n -<\/title>\n<meta name=\"description\" content=\"NTP l\u00e0 g\u00ec?\u00a0Kh\u00e1i ni\u1ec7m kh\u00e1 quen v\u1edbi d\u00e2n c\u00f4ng ngh\u1ec7 th\u00f4ng tin, Code\u2026 Nh\u01b0ng \u0111\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi ng\u01b0\u1eddi b\u01b0\u1edbc v\u00e0o t\u00ecm hi\u1ec3u th\u00ec l\u00e0 kh\u00e1i ni\u1ec7m...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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