{"id":12381647,"date":"2026-03-25T14:41:38","date_gmt":"2026-03-25T06:41:38","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e4%bb%8e%e9%9b%b6%e5%88%b0%e4%b8%80%ef%bc%9a%e5%85%a8%e9%9d%a2%e8%a7%a3%e6%9e%90%e5%9f%9f%e5%90%8d%e7%9a%84%e6%b3%a8%e5%86%8c%e3%80%81%e8%a7%a3%e6%9e%90%e4%b8%8e%e7%ae%a1%e7%90%86%e5%85%a8%e6%b5%81\/"},"modified":"2026-03-25T15:32:42","modified_gmt":"2026-03-25T07:32:42","slug":"domain-registration-dns-management-complete-guide-12381647","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/domain\/domain-registration-dns-management-complete-guide-12381647\/","title":{"rendered":"T\u1eeb con s\u1ed1 kh\u00f4ng \u0111\u1ebfn con s\u1ed1 m\u1ed9t: H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 quy tr\u00ecnh \u0111\u0103ng k\u00fd, gi\u1ea3i quy\u1ebft v\u00e0 qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n"},"content":{"rendered":"

\u0110i\u1ec1u g\u00ec l\u00e0 t\u00ean mi\u1ec1n? \u0110\u00f3 ch\u00ednh l\u00e0 \u201cs\u1ed1 nh\u00e0\u201d tr\u00ean internet.\u201d<\/h2>\n\n\n\n

Tr\u01b0\u1edbc khi \u0111i s\u00e2u v\u00e0o th\u1ea3o lu\u1eadn v\u1ec1 c\u00e1c quy tr\u00ecnh, ch\u00fang ta c\u1ea7n hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t c\u1ee7a t\u00ean mi\u1ec1n (domain name). T\u00ean mi\u1ec1n l\u00e0 t\u00ean c\u1ee7a m\u1ed9t m\u00e1y t\u00ednh ho\u1eb7c m\u1ed9t nh\u00f3m m\u00e1y t\u00ednh tr\u00ean Internet, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ee7a ch\u00fang trong qu\u00e1 tr\u00ecnh truy\u1ec1n d\u1eef li\u1ec7u. Ch\u00fang ta c\u00f3 th\u1ec3 so s\u00e1nh t\u00ean mi\u1ec1n v\u1edbi m\u1ed9t h\u1ec7 th\u1ed1ng \u201c\u0111\u1ecba ch\u1ec9 nh\u00e0\u201d d\u1ec5 nh\u1edb v\u00e0 d\u1ec5 vi\u1ebft \u0111\u1ed1i v\u1edbi con ng\u01b0\u1eddi. Th\u1ef1c t\u1ebf, m\u1ed7i thi\u1ebft b\u1ecb tr\u00ean m\u1ea1ng Internet \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh m\u1ed9t c\u00e1ch duy nh\u1ea5t b\u1eb1ng m\u1ed9t chu\u1ed7i s\u1ed1 \u0111\u01b0\u1ee3c ph\u00e2n c\u00e1ch b\u1eb1ng d\u1ea5u ch\u1ea5m \u2013 \u0111\u00f3 l\u00e0 \u0111\u1ecba ch\u1ec9 IP (v\u00ed d\u1ee5: 192.0.2.1). H\u1ec7 th\u1ed1ng T\u00ean mi\u1ec1n (Domain Name System \u2013 DNS) c\u00f3 nhi\u1ec7m v\u1ee5 chuy\u1ec3n \u0111\u1ed5i c\u00e1c t\u00ean mi\u1ec1n m\u00e0 ch\u00fang ta nh\u1eadp v\u00e0o (nh\u01b0 www.example.com) th\u00e0nh \u0111\u1ecba ch\u1ec9 IP m\u00e0 m\u00e1y t\u00ednh c\u00f3 th\u1ec3 nh\u1eadn di\u1ec7n \u0111\u01b0\u1ee3c, t\u1eeb \u0111\u00f3 cho ph\u00e9p ch\u00fang ta truy c\u1eadp v\u00e0o trang web t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n

M\u1ed9t t\u00ean mi\u1ec1n ho\u00e0n ch\u1ec9nh \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb nhi\u1ec1u c\u1ea5p \u0111\u1ed9, \u0111\u01b0\u1ee3c ph\u00e2n c\u00e1ch b\u1eb1ng d\u1ea5u ch\u1ea5m (.). L\u1ea5y v\u00ed d\u1ee5 \u201cwww.example.com\u201d: ph\u1ea7n cu\u1ed1i c\u00f9ng l\u00e0 \u201c.com\u201d, \u0111\u00e2y l\u00e0 t\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t, th\u1ec3 hi\u1ec7n lo\u1ea1i h\u00ecnh ho\u1eb7c m\u00e3 qu\u1ed1c gia\/khu v\u1ef1c c\u1ee7a t\u00ean mi\u1ec1n. \u201cexample\u201d l\u00e0 t\u00ean mi\u1ec1n c\u1ea5p hai, th\u01b0\u1eddng \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00f9ng \u0111\u0103ng k\u00fd v\u00e0 mang t\u00ednh \u0111\u1ed9c \u0111\u00e1o. Ph\u1ea7n b\u00ean tr\u00e1i c\u00f9ng l\u00e0 \u201cwww\u201d, \u0111\u00e2y l\u00e0 t\u00ean mi\u1ec1n c\u1ea5p ba, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tr\u1ecf \u0111\u1ebfn m\u00e1y ch\u1ee7 ch\u00ednh c\u1ee7a trang web; tuy nhi\u00ean, n\u00f3 c\u0169ng c\u00f3 th\u1ec3 d\u00f9ng cho c\u00e1c d\u1ecbch v\u1ee5 kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 \u201cmail.example.com\u201d. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u1ea5u tr\u00fac n\u00e0y l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c \u0111\u0103ng k\u00fd v\u00e0 qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n sau n\u00e0y.<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n?<\/h2>\n\n\n\n

Ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n v\u00e0 t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p<\/h3>\n\n\n\n

B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean trong qu\u00e1 tr\u00ecnh \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n l\u00e0 ch\u1ecdn m\u1ed9t nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n uy t\u00edn. Nh\u1eefng nh\u00e0 cung c\u1ea5p n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c ICANN (T\u1ed5 ch\u1ee9c Qu\u1ea3n l\u00fd T\u00ean mi\u1ec1n v\u00e0 \u0110\u1ecba ch\u1ec9 Internet) ch\u1ee9ng nh\u1eadn v\u00e0 ch\u1ecbu tr\u00e1ch nhi\u1ec7m x\u1eed l\u00fd vi\u1ec7c b\u00e1n v\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n. Khi l\u1ef1a ch\u1ecdn, b\u1ea1n n\u00ean xem x\u00e9t \u0111\u1ebfn uy t\u00edn c\u1ee7a h\u1ecd, m\u1ee9c gi\u00e1, \u0111\u1ed9 d\u1ec5 s\u1eed d\u1ee5ng c\u1ee7a giao di\u1ec7n qu\u1ea3n l\u00fd, ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 kh\u00e1ch h\u00e0ng, v\u00e0 xem h\u1ecd c\u00f3 h\u1ed7 tr\u1ee3 lo\u1ea1i t\u00ean mi\u1ec1n c\u1ea5p cao (top-level domain \u2013 TLD) m\u00e0 b\u1ea1n c\u1ea7n hay kh\u00f4ng.<\/p>\n\n\n\n

Sau khi ch\u1ecdn \u0111\u01b0\u1ee3c nh\u00e0 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, b\u1ea1n s\u1ebd b\u01b0\u1edbc v\u00e0o giai \u0111o\u1ea1n quan tr\u1ecdng ti\u1ebfp theo: ch\u1ecdn t\u00ean mi\u1ec1n ph\u00f9 h\u1ee3p cho m\u00ecnh. M\u1ed9t t\u00ean mi\u1ec1n t\u1ed1t th\u01b0\u1eddng ng\u1eafn g\u1ecdn, d\u1ec5 nh\u1edb, d\u1ec5 \u0111\u00e1nh v\u1ea7n v\u00e0 ph\u1ea3i ph\u1ea3n \u00e1nh r\u00f5 r\u00e0ng th\u01b0\u01a1ng hi\u1ec7u, l\u0129nh v\u1ef1c kinh doanh ho\u1eb7c ch\u1ee7 \u0111\u1ec1 c\u1ee7a trang web b\u1ea1n. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u00f4 t\u00ecm ki\u1ebfm tr\u00ean trang web c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd \u0111\u1ec3 ki\u1ec3m tra xem t\u00ean mi\u1ec1n m\u00ecnh mong mu\u1ed1n c\u00f3 s\u1eb5n hay ch\u01b0a.<\/p>\n\n\n\n

Ho\u00e0n t\u1ea5t vi\u1ec7c nh\u1eadp th\u00f4ng tin \u0111\u0103ng k\u00fd v\u00e0 th\u1ef1c hi\u1ec7n thanh to\u00e1n.<\/h3>\n\n\n\n

Sau khi ch\u1ecdn \u0111\u01b0\u1ee3c m\u1ed9t t\u00ean mi\u1ec1n c\u00f3 s\u1eb5n, b\u1ea1n s\u1ebd b\u01b0\u1edbc v\u00e0o qu\u00e1 tr\u00ecnh mua. B\u1ea1n c\u1ea7n cung c\u1ea5p th\u00f4ng tin \u0111\u0103ng k\u00fd, trong \u0111\u00f3 th\u00f4ng tin li\u00ean h\u1ec7 c\u1ee7a ch\u1ee7 s\u1edf h\u1eefu t\u00ean mi\u1ec1n l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t; th\u00f4ng tin n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong c\u01a1 s\u1edf d\u1eef li\u1ec7u WHOIS c\u00f4ng khai (m\u1ed9t s\u1ed1 th\u00f4ng tin c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u00ed m\u1eadt). H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng th\u00f4ng tin b\u1ea1n cung c\u1ea5p l\u00e0 ch\u00ednh x\u00e1c, v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn quy\u1ec1n s\u1edf h\u1eefu h\u1ee3p ph\u00e1p c\u1ee7a t\u00ean mi\u1ec1n \u0111\u00f3.<\/p>\n\n\n

\n\n
\n \u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n hosting.com<\/strong>\n
Th\u00f4ng qua g\u00f3i l\u01b0u tr\u1eef chia s\u1ebb h\u00e0ng n\u0103m, nh\u1eadn t\u00ean mi\u1ec1n .com mi\u1ec5n ph\u00ed trong m\u1ed9t n\u0103m, h\u1ed7 tr\u1ee3 300+ h\u1eadu t\u1ed1 t\u00ean mi\u1ec1n, qu\u1ea3n l\u00fd DNS mi\u1ec5n ph\u00ed, h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng 24\/7<\/div>\n <\/div>\n\n
\n \n \n \"\u0110\u0103ng\n \n \n <\/a>\n \n \n Truy c\u1eadp hosting.com <\/a>\n <\/div>\n <\/div>\n\n \n\n\n\n\n\n\n

Ti\u1ebfp theo, b\u1ea1n c\u1ea7n ch\u1ecdn th\u1eddi h\u1ea1n \u0111\u0103ng k\u00fd cho t\u00ean mi\u1ec1n, th\u01b0\u1eddng l\u00e0 t\u1eeb 1 \u0111\u1ebfn 10 n\u0103m, v\u00e0 ho\u00e0n t\u1ea5t vi\u1ec7c thanh to\u00e1n. Sau khi thanh to\u00e1n th\u00e0nh c\u00f4ng, t\u00ean mi\u1ec1n s\u1ebd \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd d\u01b0\u1edbi t\u00ean c\u1ee7a b\u1ea1n. Th\u00f4ng th\u01b0\u1eddng, qu\u00e1 tr\u00ecnh \u00e1p d\u1ee5ng DNS tr\u00ean to\u00e0n c\u1ea7u m\u1ea5t t\u1eeb v\u00e0i gi\u1edd \u0111\u1ebfn 48 gi\u1edd sau khi mua.<\/p>\n\n\n\n

C\u1ea5u h\u00ecnh th\u00f4ng tin t\u00ean mi\u1ec1n v\u00e0 qu\u1ea3n l\u00fd n\u1ec1n t\u1ea3ng<\/h3>\n\n\n\n

Sau khi \u0111\u0103ng k\u00fd th\u00e0nh c\u00f4ng, b\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n qu\u1ea3n l\u00fd tr\u1ef1c tuy\u1ebfn do nh\u00e0 \u0111\u0103ng k\u00fd cung c\u1ea5p. Trong b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp th\u00f4ng tin li\u00ean h\u1ec7 cho t\u00ean mi\u1ec1n, \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 DNS, ch\u1ee9c n\u0103ng chuy\u1ec3n h\u01b0\u1edbng t\u00ean mi\u1ec1n, v\u00e0 quan tr\u1ecdng nh\u1ea5t l\u00e0 c\u00e1c b\u1ea3n ghi gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (domain name resolution records). Vi\u1ec7c h\u1ecdc c\u00e1ch s\u1eed d\u1ee5ng b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n qu\u1ea3n l\u00fd n\u00e0y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 trong t\u01b0\u01a1ng lai.<\/p>\n\n\n\n

C\u00e1c kh\u00e1i ni\u1ec7m c\u1ed1t l\u00f5i v\u00e0 c\u00e1ch c\u1ea5u h\u00ecnh c\u1ee7a qu\u00e1 tr\u00ecnh gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (Domain Name Resolution \u2013 DNS)<\/h2>\n\n\n\n

Vi\u1ec7c \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n ch\u1ec9 gi\u00fap b\u1ea1n s\u1edf h\u1eefu m\u1ed9t c\u00e1i t\u00ean tr\u00ean m\u1ea1ng; \u0111\u1ec3 c\u00e1i t\u00ean \u0111\u00f3 tr\u1ecf \u0111\u1ebfn m\u00e1y ch\u1ee7 c\u1ee7a trang web c\u1ee7a b\u1ea1n, b\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (domain name resolution). T\u1ea5t c\u1ea3 nh\u1eefng \u0111i\u1ec1u n\u00e0y \u0111\u1ec1u d\u1ef1a tr\u00ean h\u1ec7 th\u1ed1ng DNS (Domain Name System).<\/p>\n\n\n\n

Gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 c\u00e1c lo\u1ea1i b\u1ea3n ghi DNS<\/h3>\n\n\n\n

Trong b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n qu\u1ea3n l\u00fd, b\u1ea1n c\u1ea7n c\u1ea5u h\u00ecnh c\u00e1c lo\u1ea1i b\u1ea3n ghi DNS kh\u00e1c nhau. C\u00e1c lo\u1ea1i b\u1ea3n ghi ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m:<\/p>\n\n\n\n

Lo\u1ea1i A: \u0110\u1ecbnh tuy\u1ebfn m\u1ed9t t\u00ean mi\u1ec1n \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IPv4. \u0110\u00e2y l\u00e0 lo\u1ea1i b\u1ea3n ghi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t trong qu\u00e1 tr\u00ecnh gi\u1ea3i quy\u1ebft t\u00ean mi\u1ec1n (domain name resolution). V\u00ed d\u1ee5: \u0110\u1ecbnh tuy\u1ebfn \u201cexample.com\u201d \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 \u201c93.184.216.34\u201d.
\nGhi ch\u00e9p AAAA: Ch\u1ee9c n\u0103ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 ghi ch\u00e9p lo\u1ea1i A, nh\u01b0ng n\u00f3 \u00e1p d\u1ee5ng cho \u0111\u1ecba ch\u1ec9 IPv6.
\nB\u1ea3n ghi CNAME: T\u1ee9c l\u00e0 b\u1ea3n ghi b\u00ed danh. N\u00f3 c\u00f3 th\u1ec3 tr\u1ecf m\u1ed9t t\u00ean mi\u1ec1n \u0111\u1ebfn m\u1ed9t t\u00ean mi\u1ec1n kh\u00e1c, thay v\u00ec \u0111\u1ecba ch\u1ec9 IP. V\u00ed d\u1ee5, tr\u1ecf \u201cwww.example.com\u201d \u0111\u1ebfn \u201cexample.com\u201d, nh\u01b0 v\u1eady khi \u0111\u1ecba ch\u1ec9 IP m\u00e1y ch\u1ee7 thay \u0111\u1ed5i, ch\u1ec9 c\u1ea7n s\u1eeda b\u1ea3n ghi A c\u1ee7a \u201cexample.com\u201d.
\nMX (Mail Exchange) record: \u0110\u00e2y l\u00e0 th\u00f4ng tin li\u00ean quan \u0111\u1ebfn m\u00e1y ch\u1ee7 trao \u0111\u1ed5i th\u01b0, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ec9 \u0111\u1ecbnh \u0111\u1ecba ch\u1ec9 m\u00e1y ch\u1ee7 th\u01b0 n\u00e0o s\u1ebd nh\u1eadn th\u01b0 cho t\u00ean mi\u1ec1n \u0111\u00f3. B\u1ea1n c\u1ea7n ph\u1ea3i thi\u1ebft l\u1eadp MX record khi c\u1ea5u h\u00ecnh d\u1ecbch v\u1ee5 email.
\nB\u1ea3n ghi TXT: B\u1ea3n ghi v\u0103n b\u1ea3n, th\u01b0\u1eddng d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef th\u00f4ng tin x\u00e1c th\u1ef1c nh\u01b0 SPF, DKIM, ho\u1eb7c cung c\u1ea5p c\u00e1c m\u00f4 t\u1ea3 v\u0103n b\u1ea3n t\u00f9y \u00fd kh\u00e1c.<\/p>\n\n\n\n

Quy tr\u00ecnh ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u00e0 vi\u1ec7c thi\u1ebft l\u1eadp gi\u00e1 tr\u1ecb TTL (Time To Live)<\/h3>\n\n\n\n

Khi ng\u01b0\u1eddi d\u00f9ng nh\u1eadp t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n v\u00e0o tr\u00ecnh duy\u1ec7t, m\u1ed9t qu\u00e1 tr\u00ecnh gi\u1ea3i m\u00e3 DNS ph\u1ee9c t\u1ea1p s\u1ebd \u0111\u01b0\u1ee3c kh\u1edfi \u0111\u1ed9ng \u1edf ph\u00eda sau n\u1ec1n. M\u00e1y t\u00ednh c\u1ee7a ng\u01b0\u1eddi d\u00f9ng s\u1ebd th\u1ef1c hi\u1ec7n c\u00e1c cu\u1ed9c truy v\u1ea5n theo t\u1eebng b\u01b0\u1edbc (t\u1eeb b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee5c b\u1ed9 -> DNS c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 m\u1ea1ng -> m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n g\u1ed1c -> m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n c\u1ea5p cao nh\u1ea5t -> m\u00e1y ch\u1ee7 t\u00ean mi\u1ec1n c\u00f3 th\u1ea9m quy\u1ec1n), \u0111\u1ec3 cu\u1ed1i c\u00f9ng thu \u0111\u01b0\u1ee3c \u0111\u1ecba ch\u1ec9 IP t\u01b0\u01a1ng \u1ee9ng. \u0110\u1ed1i v\u1edbi ng\u01b0\u1eddi truy c\u1eadp, qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c.<\/p>\n\n\n\n

TTL l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a \u201cTime To Live\u201d, c\u00f3 \u0111\u01a1n v\u1ecb l\u00e0 gi\u00e2y. N\u00f3 quy \u0111\u1ecbnh th\u1eddi gian m\u00e0 b\u1ea3n ghi DNS \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 \u0111\u1ec7m \u1edf c\u00e1c c\u1ea5p \u0111\u1ed9 kh\u00e1c nhau. M\u1ed9t gi\u00e1 tr\u1ecb TTL ng\u1eafn (v\u00ed d\u1ee5: 600 gi\u00e2y) gi\u00fap c\u00e1c thay \u0111\u1ed5i c\u00f3 hi\u1ec7u l\u1ef1c nhanh ch\u00f3ng, nh\u01b0ng s\u1ebd l\u00e0m t\u0103ng t\u1ea3i l\u01b0\u1ee3ng truy v\u1ea5n; ng\u01b0\u1ee3c l\u1ea1i, m\u1ed9t gi\u00e1 tr\u1ecb TTL d\u00e0i (v\u00ed d\u1ee5: 86400 gi\u00e2y) s\u1ebd c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 truy c\u1eadp, nh\u01b0ng c\u00e1c thay \u0111\u1ed5i s\u1ebd \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng ch\u1eadm h\u01a1n. B\u1ea1n n\u00ean thi\u1ebft l\u1eadp gi\u00e1 tr\u1ecb TTL m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd t\u00f9y theo \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a trang web.<\/p>\n\n\n\n

C\u00e1c thao t\u00e1c n\u00e2ng cao v\u00e0 an ninh trong qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n<\/h2>\n\n\n\n

L\u00e0 m\u1ed9t t\u00e0i s\u1ea3n k\u1ef9 thu\u1eadt s\u1ed1 quan tr\u1ecdng, vi\u1ec7c qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n kh\u00f4ng ch\u1ec9 gi\u1edbi h\u1ea1n \u1edf vi\u1ec7c gi\u1ea3i quy\u1ebft c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn vi\u1ec7c truy c\u1eadp (kh\u1ea3 n\u0103ng truy c\u1eadp trang web), m\u00e0 c\u00f2n bao g\u1ed3m c\u00e1c c\u00f4ng vi\u1ec7c b\u1ea3o tr\u00ec l\u00e2u d\u00e0i nh\u01b0 gia h\u1ea1n, \u0111\u1ea3m b\u1ea3o an ninh, chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n<\/p>\n\n\n

\n\n
\n \u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n UltaHost<\/strong>\n
H\u01a1n 300 \u0111u\u00f4i t\u00ean mi\u1ec1n, ch\u1ecdn g\u00f3i l\u01b0u tr\u1eef h\u00e0ng n\u0103m, t\u1eadn h\u01b0\u1edfng t\u00ean mi\u1ec1n mi\u1ec5n ph\u00ed! Chuy\u1ec3n t\u00ean mi\u1ec1n sang Ultahost \u0111\u1ec3 \u0111\u01b0\u1ee3c gia h\u1ea1n mi\u1ec5n ph\u00ed m\u1ed9t n\u0103m, .com $9.49 n\u0103m \u0111\u1ea7u ti\u00ean<\/div>\n <\/div>\n\n
\n \n \n \"\u0110\u0103ng\n \n \n <\/a>\n \n \n Truy c\u1eadp UltaHost <\/a>\n <\/div>\n <\/div>\n\n \n\n\n\n\n\n\n

C\u00e1c thao t\u00e1c qu\u1ea3n l\u00fd quan tr\u1ecdng: H\u1ee7y \u0111\u0103ng k\u00fd (gia h\u1ea1n), chuy\u1ec3n nh\u01b0\u1ee3ng v\u00e0 m\u1edf kh\u00f3a.<\/h3>\n\n\n\n

Vi\u1ec7c \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n theo t\u1eebng n\u0103m; v\u00ec v\u1eady, b\u1ea1n c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn th\u1eddi h\u1ea1n h\u1ebft h\u1ea1n v\u00e0 n\u00e2ng c\u1ea5p t\u00ean mi\u1ec1n k\u1ecbp th\u1eddi. Sau khi h\u1ebft h\u1ea1n, th\u01b0\u1eddng s\u1ebd c\u00f3 m\u1ed9t kho\u1ea3ng th\u1eddi gian \u00e2n h\u1ea1n v\u00e0 th\u1eddi gian \u0111\u1ec3 mua l\u1ea1i t\u00ean mi\u1ec1n. N\u1ebfu b\u1ea1n b\u1ecf l\u1ee1 kho\u1ea3ng th\u1eddi gian n\u00e0y, chi ph\u00ed mua l\u1ea1i t\u00ean mi\u1ec1n s\u1ebd r\u1ea5t cao. Ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean b\u1eadt ch\u1ee9c n\u0103ng t\u1ef1 \u0111\u1ed9<\/p>\n\n\n\n

T\u00ean mi\u1ec1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chuy\u1ec3n sang nh\u00e0 \u0111\u0103ng k\u00fd kh\u00e1c. Qu\u00e1 tr\u00ecnh chuy\u1ec3n nh\u01b0\u1ee3ng th\u01b0\u1eddng y\u00eau c\u1ea7u t\u00ean mi\u1ec1n \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd trong v\u00f2ng 60 ng\u00e0y tr\u1edf l\u00ean v\u00e0 kh\u00f4ng n\u1eb1m trong th\u1eddi gian kh\u00f3a 60 ng\u00e0y sau khi chuy\u1ec3n nh\u01b0\u1ee3ng; \u0111\u1ed3ng th\u1eddi, b\u1ea1n c\u1ea7n l\u1ea5y v\u00e0 g\u1eedi m\u00e3 chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n \u0111\u00fang \u0111\u1eafn, \u0111\u1ea3m b\u1ea3o r\u1eb1ng email c\u1ee7a qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c c\u00e1c email x\u00e1c nh\u1eadn m\u1ed9t c\u00e1ch b\u00ecnh th\u01b0\u1eddng. Tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n vi\u1ec7c chuy\u1ec3n nh\u01b0\u1ee3ng, b\u1ea1n c\u1ea7n g\u1ee1 kh\u00f3a chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n trong giao di\u1ec7n qu\u1ea3n l\u00fd c\u1ee7a nh\u00e0 \u0111\u0103ng k\u00fd hi\u1ec7n t\u1ea1i.<\/p>\n\n\n\n

B\u1ea3o v\u1ec7 an ninh t\u00ean mi\u1ec1n v\u00e0 t\u00e0i kho\u1ea3n<\/h3>\n\n\n\n

An ninh t\u00ean mi\u1ec1n r\u1ea5t quan tr\u1ecdng. H\u00e3y \u0111\u1ea3m b\u1ea3o s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u m\u1ea1nh \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00e0i kho\u1ea3n c\u1ee7a b\u1ea1n t\u1ea1i nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, v\u00e0 b\u1eadt t\u00ednh n\u0103ng x\u00e1c th\u1ef1c hai y\u1ebfu t\u1ed1 (two-factor authentication). Th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra xem email li\u00ean k\u1ebft v\u1edbi t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n c\u00f3 an to\u00e0n kh\u00f4ng, v\u00ec nhi\u1ec1u thao t\u00e1c kh\u00f4i ph\u1ee5c th\u00f4ng tin \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua x\u00e1c th\u1ef1c qua email. H\u00e3y k\u00edch ho\u1ea1t d\u1ecbch v\u1ee5 b\u1ea3o v\u1ec7 quy\u1ec1n ri\u00eang t\u01b0 WHOIS do nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n cung c\u1ea5p; d\u1ecbch v\u1ee5 n\u00e0y s\u1ebd gi\u00fap \u1ea9n th\u00f4ng tin li\u00ean l\u1ea1c c\u00e1 nh\u00e2n c\u1ee7a b\u1ea1n, tr\u00e1nh r\u1ee7i ro nh\u1eadn th\u01b0 r\u00e1c v\u00e0 l\u1eeba \u0111\u1ea3o do th\u00f4ng tin b\u1ecb ti\u1ebft l\u1ed9 c\u00f4ng khai.<\/p>\n\n\n\n

H\u00e3y \u0111\u0103ng nh\u1eadp v\u00e0o h\u1ec7 th\u1ed1ng qu\u1ea3n tr\u1ecb \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 ki\u1ec3m tra xem c\u00e1c b\u1ea3n ghi gi\u1ea3i quy\u1ebft DNS c\u00f3 b\u1ecb s\u1eeda \u0111\u1ed5i m\u1ed9t c\u00e1ch tr\u00e1i ph\u00e9p hay kh\u00f4ng. H\u00e3y c\u1ea3nh gi\u00e1c v\u1edbi c\u00e1c email th\u00f4ng b\u00e1o v\u1ec1 vi\u1ec7c chuy\u1ec3n nh\u01b0\u1ee3ng t\u00ean mi\u1ec1n ho\u1eb7c thay \u0111\u1ed5i th\u00f4ng tin t\u1eeb nh\u1eefng ngu\u1ed3n kh\u00f4ng r\u00f5 r\u00e0ng, v\u00e0 nh\u1edb x\u00e1c nh\u1eadn th\u00f4ng tin th\u00f4ng qua c\u00e1c k\u00eanh ch\u00ednh th\u1ee9c.<\/p>\n\n\n\n

T\u00f3m l\u1ea1i<\/h2>\n\n\n\n

T\u1eeb vi\u1ec7c ch\u1ecdn t\u00ean mi\u1ec1n, ho\u00e0n t\u1ea5t qu\u00e1 tr\u00ecnh \u0111\u0103ng k\u00fd, \u0111\u1ebfn vi\u1ec7c c\u1ea5u h\u00ecnh chi ti\u1ebft c\u00e1c b\u1ea3n ghi DNS, v\u00e0 sau \u0111\u00f3 l\u00e0 vi\u1ec7c qu\u1ea3n l\u00fd b\u1ea3o m\u1eadt c\u0169ng nh\u01b0 b\u1ea3o tr\u00ec l\u00e2u d\u00e0i, to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi c\u1ee7a m\u1ed9t t\u00ean mi\u1ec1n ch\u00ednh l\u00e0 n\u1ec1n t\u1ea3ng cho danh t\u00ednh tr\u1ef1c tuy\u1ebfn c\u1ee7a ch\u00fang ta. Vi\u1ec7c hi\u1ec3u r\u00f5 v\u00e0 n\u1eafm v\u1eefng t\u1eebng b\u01b0\u1edbc trong qu\u00e1 tr\u00ecnh n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap \u0111\u1ea3m b\u1ea3o trang web c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n, m\u00e0 c\u00f2n gi\u00fap b\u1ea1n ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd c\u00e1c t\u00e0i s\u1ea3n k\u1ef9 thu\u1eadt s\u1ed1 c\u1ee7a m\u00ecnh. H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t l\u1ed9 tr\u00ecnh h\u1ecdc t\u1eadp t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i, tuy nhi\u00ean, k\u1ef9 thu\u1eadt qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n kh\u00e1 ph\u1ee9c t\u1ea1p; khi g\u1eb7p ph\u1ea3i v\u1ea5n \u0111\u1ec1 trong th\u1ef1c t\u1ebf, vi\u1ec7c tham kh\u1ea3o t\u00e0i li\u1ec7u h\u1ed7 tr\u1ee3 t\u1eeb nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd ho\u1eb7c c\u00e1c c\u1ed9ng \u0111\u1ed3ng k\u1ef9 thu\u1eadt uy t\u00edn lu\u00f4n l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t nh\u1ea5t.<\/p>\n\n\n\n

FAQ \u5e38\u89c1\u95ee\u9898<\/h2>\n\n\n\n

T\u00ean mi\u1ec1n (domain name) v\u00e0 kh\u00f4ng gian web (web hosting) c\u00f3 ph\u1ea3i l\u00e0 c\u00f9ng m\u1ed9t th\u1ee9 kh\u00f4ng?<\/h3>\n\n\n\n

Kh\u00f4ng ph\u1ea3i v\u1eady. T\u00ean mi\u1ec1n (domain name) l\u00e0 \u0111\u1ecba ch\u1ec9 c\u1ee7a m\u1ed9t trang web, trong khi kh\u00f4ng gian l\u01b0u tr\u1eef trang web (website hosting) l\u00e0 thi\u1ebft b\u1ecb v\u1eadt l\u00fd ho\u1eb7c \u1ea3o d\u00f9ng \u0111\u1ec3 l\u01b0u tr\u1eef c\u00e1c t\u1ec7p tin, c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u00e1c n\u1ed9i dung kh\u00e1c c\u1ee7a trang web. T\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c chuy\u1ec3n h\u01b0\u1edbng \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 IP c\u1ee7a kh\u00f4ng gian l\u01b0u tr\u1eef th\u00f4ng qua qu\u00e1 tr\u00ecnh gi\u1ea3i m\u00e3 DNS (Domain Name System), v\u00e0 ch\u1ec9 khi \u0111\u00f3 ng\u01b0\u1eddi d\u00f9ng m\u1edbi c\u00f3 th\u1ec3 truy c\u1eadp n\u1ed9i dung trang web b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n \u0111\u00f3. B\u1ea1n c\u00f3 th\u1ec3 h\u00ecnh dung t\u00ean mi\u1ec1n nh\u01b0 \u201cs\u1ed1 nh\u00e0\u201d, c\u00f2n kh\u00f4ng gian l\u01b0u tr\u1eef trang web gi\u1ed1ng nh\u01b0 \u201cng\u00f4i nh\u00e0\u201d \u0111\u00f3.<\/p>\n\n

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\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\u0110\u0103ng\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t
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\r\n\t\t\t\t\t\u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n Bluehost<\/strong>\r\n\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\tH\u1ed7 tr\u1ee3 tr\u00ecnh t\u1ea1o t\u00ean mi\u1ec1n AI, d\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 24\/7<\/span>\r\n\t\t\t\t
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T\u1ea1o t\u00ean mi\u1ec1n b\u1eb1ng AI<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp Bluehost \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n \u2192<\/a>\r\n\t\t\t\t\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t<\/div>\r\n\t\t\r\n\t\r\n\t
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\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"WordPress.com\r\n\t\t\t\t\t\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t
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\r\n\t\t\t\t\tWordPress.com \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n<\/strong>\r\n\t\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t\t\tCh\u1ecdn g\u00f3i cao c\u1ea5p nh\u1ea5t \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m gi\u00e1 l\u00ean \u0111\u1ebfn 69% + mi\u1ec5n ph\u00ed chuy\u1ec3n t\u00ean mi\u1ec1n, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd t\u1eeb .com, .blog v\u00e0 h\u01a1n 350 \u0111u\u00f4i t\u00ean mi\u1ec1n kh\u00e1c.<\/span>\r\n\t\t\t\t
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Mua g\u00f3i thanh to\u00e1n h\u00e0ng n\u0103m, t\u00ean mi\u1ec1n mi\u1ec5n ph\u00ed n\u0103m \u0111\u1ea7u ti\u00ean<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp \u0110\u0103ng k\u00fd t\u00ean mi\u1ec1n WordPress.com \u2192<\/a>\r\n\t\t\t\t\t\t\t<\/div> \r\n\t\t<\/div>\r\n\t<\/div>\r\n\t\t\r\n<\/div>\r\n\r\n\r\n\n\n\n\n\n\n\n

M\u1ed9t t\u00ean mi\u1ec1n c\u00f3 th\u1ec3 t\u01b0\u01a1ng \u1ee9ng v\u1edbi nhi\u1ec1u trang web kh\u00f4ng?<\/h3>\n\n\n\n

M\u1ed9t t\u00ean mi\u1ec1n, v\u00e0o c\u00f9ng m\u1ed9t th\u1eddi \u0111i\u1ec3m, th\u01b0\u1eddng ch\u1ec9 c\u00f3 th\u1ec3 ch\u1ec9 \u0111\u1ebfn m\u1ed9t \u0111\u1ecba ch\u1ec9 IP ch\u00ednh ho\u1eb7c m\u1ed9t b\u1ea3n ghi CNAME cho t\u00ean mi\u1ec1n g\u1ed1c c\u1ee7a n\u00f3 (v\u00ed d\u1ee5: example.com). Tuy nhi\u00ean, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o c\u00e1c t\u00ean mi\u1ec1n con (v\u00ed d\u1ee5: shop.example.com, blog.example.com) v\u00e0 thi\u1ebft l\u1eadp c\u00e1c b\u1ea3n ghi gi\u1ea3i quy\u1ebft (resolution records) ri\u00eang bi\u1ec7t cho ch\u00fang, \u0111\u1ec3 c\u00e1c t\u00ean mi\u1ec1n con n\u00e0y tr\u1ecf \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c nhau. Nh\u1edd \u0111\u00f3, m\u1ed9t t\u00ean mi\u1ec1n duy nh\u1ea5t c\u00f3 th\u1ec3 ch\u1ee9a nhi\u1ec1u trang web ho\u1eb7c d\u1ecbch v\u1ee5 kh\u00e1c nhau. \u0110i\u1ec1u n\u00e0y th\u1ec3 hi\u1ec7n vi\u1ec7c m\u1ed9t t\u00ean mi\u1ec1n c\u00f3 th\u1ec3 \u0111\u1ea1i di\u1ec7n cho nhi\u1ec1u \u201ctrang web\u201d ho\u1eb7c \u201cd\u1ecbch v\u1ee5\u201d c\u1ee5 th\u1ec3, ch\u1ee9 kh\u00f4ng ph\u1ea3i ch\u1ec9 l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m m\u01a1 h\u1ed3 v\u1ec1 m\u1ed9t trang web duy nh\u1ea5t.<\/p>\n\n\n\n

Sau khi \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n, c\u00f3 th\u1ec3 s\u1edf h\u1eefu n\u00f3 v\u0129nh vi\u1ec5n kh\u00f4ng?<\/h3>\n\n\n\n

Kh\u00f4ng th\u1ec3. T\u00ean mi\u1ec1n \u0111\u01b0\u1ee3c \u0111\u0103ng k\u00fd v\u00e0 gia h\u1ea1n theo t\u1eebng n\u0103m; kh\u00f4ng c\u00f3 kh\u00e1i ni\u1ec7m mua \u201cv\u0129nh vi\u1ec5n\u201d. Th\u1eddi gian b\u1ea1n s\u1edf h\u1eefu m\u1ed9t t\u00ean mi\u1ec1n ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ed1 n\u0103m b\u1ea1n \u0111\u0103ng k\u00fd c\u0169ng nh\u01b0 vi\u1ec7c b\u1ea1n c\u00f3 gia h\u1ea1n \u0111\u00fang h\u1ea1n hay kh\u00f4ng. B\u1ea1n c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd ho\u1eb7c gia h\u1ea1n t\u00ean mi\u1ec1n trong nhi\u1ec1u n\u0103m (th\u00f4ng th\u01b0\u1eddng t\u1ed1i \u0111a l\u00e0 10 n\u0103m), nh\u01b0ng sau khi h\u1ebft h\u1ea1n n\u1ebfu kh\u00f4ng gia h\u1ea1n, c\u01a1 quan qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n s\u1ebd gi\u1ea3i ph\u00f3ng t\u00ean mi\u1ec1n \u0111\u00f3 \u0111\u1ec3 ng\u01b0\u1eddi kh\u00e1c c\u00f3 th\u1ec3 \u0111\u0103ng k\u00fd l\u1ea1i.<\/p>\n\n\n\n

T\u1ea1i sao sau khi thay \u0111\u1ed5i th\u00f4ng tin DNS, vi\u1ec7c c\u1eadp nh\u1eadt kh\u00f4ng di\u1ec5n ra ngay l\u1eadp t\u1ee9c?<\/h3>\n\n\n\n

C\u00e1c b\u1ea3n ghi DNS \u0111\u01b0\u1ee3c x\u1eed l\u00fd theo c\u01a1 ch\u1ebf \u0111\u1ec7m (cache) tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. Sau khi b\u1ea1n thay \u0111\u1ed5i n\u1ed9i dung c\u1ee7a m\u1ed9t b\u1ea3n ghi DNS, th\u00f4ng tin m\u1edbi c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u0103ng t\u1ea3i t\u1eeb m\u00e1y ch\u1ee7 quy\u1ec1n (authority server) c\u1ee7a t\u00ean mi\u1ec1n c\u1ee7a b\u1ea1n l\u00ean to\u00e0n b\u1ed9 m\u1ea1ng Internet; qu\u00e1 tr\u00ecnh n\u00e0y ch\u1ecbu \u1ea3nh h\u01b0\u1edfng b\u1edfi gi\u00e1 tr\u1ecb TTL (Time To Live). Ngay c\u1ea3 khi gi\u00e1 tr\u1ecb TTL r\u1ea5t ng\u1eafn, vi\u1ec7c c\u00e1c m\u00e1y ch\u1ee7 DNS \u1edf c\u00e1c khu v\u1ef1c kh\u00e1c nhau tr\u00ean th\u1ebf gi\u1edbi v\u00e0 c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 m\u1ea1ng c\u1eadp nh\u1eadt b\u1ed9 \u0111\u1ec7m v\u1eabn m\u1ea5t m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh. Th\u00f4ng th\u01b0\u1eddng, vi\u1ec7c thay \u0111\u1ed5i b\u1ea3n ghi DNS s\u1ebd c\u00f3 hi\u1ec7u l\u1ef1c sau v\u00e0i ph\u00fat \u0111\u1ebfn v\u00e0i gi\u1edd, nh\u01b0ng \u0111\u1ec3 th\u00f4ng tin \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng tr\u00ean to\u00e0n b\u1ed9 th\u1ebf gi\u1edbi th\u00ec c\u00f3 th\u1ec3 m\u1ea5t t\u1eeb 24 \u0111\u1ebfn 48 gi\u1edd. Trong th\u1eddi gian n\u00e0y, m\u1ed9t s\u1ed1 ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 v\u1eabn truy c\u1eadp v\u00e0o \u0111\u1ecba ch\u1ec9 c\u0169; \u0111\u00e2y l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng b\u00ecnh th\u01b0\u1eddng.<\/p>","protected":false},"excerpt":{"rendered":"

B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch to\u00e0n di\u1ec7n quy tr\u00ecnh \u0111\u0103ng k\u00fd, gi\u1ea3i quy\u1ebft (DNS) v\u00e0 qu\u1ea3n l\u00fd t\u00ean mi\u1ec1n. \u0110\u1ea7u ti\u00ean, b\u00e0i vi\u1ebft gi\u1edbi thi\u1ec7u kh\u00e1i ni\u1ec7m v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a t\u00ean mi\u1ec1n, sau \u0111\u00f3 tr\u00ecnh b\u00e0y chi ti\u1ebft c\u00e1ch ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u0103ng k\u00fd, \u0111\u0103ng k\u00fd t\u00ean mi\u1ec1n v\u00e0 c\u1ea5u h\u00ecnh b\u1ea3n ghi gi\u1ea3i quy\u1ebft DNS. Cu\u1ed1i c\u00f9ng, b\u00e0i vi\u1ebft \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c thao t\u00e1c qu\u1ea3n l\u00fd n\u00e2ng cao nh\u01b0 gia h\u1ea1n, chuy\u1ec3n nh\u01b0\u1ee3ng v\u00e0 b\u1ea3o m\u1eadt t\u00ean mi\u1ec1n. \u0110\u00e2y l\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng t\u00ean mi\u1ec1n ho\u00e0n ch\u1ec9nh.<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"knowledge_category":[279],"class_list":["post-12381647","knowledge_post","type-knowledge_post","status-publish","hentry","knowledge_category-domain"],"acf":{"site_seo_keywords":"\u57df\u540d\u6ce8\u518c,\u57df\u540d\u89e3\u6790,DNS\u8bb0\u5f55,\u57df\u540d\u7ba1\u7406,\u57df\u540d\u5b89\u5168,\u57df\u540d\u8f6c\u79fb,\u57df\u540d\u89e3\u6790\u6d41\u7a0b,\u57df\u540d\u914d\u7f6e\u6307\u5357"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12381647","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts"}],"about":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/types\/knowledge_post"}],"author":[{"embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/users\/7"}],"version-history":[{"count":0,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12381647\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12381647"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12381647"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12381647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}