{"id":12362317,"date":"2026-03-11T19:23:09","date_gmt":"2026-03-11T11:23:09","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/vps%e4%b8%bb%e6%9c%ba%e7%bb%88%e6%9e%81%e6%8c%87%e5%8d%97%ef%bc%9a%e4%bb%8e%e9%80%89%e8%b4%ad%e3%80%81%e6%90%ad%e5%bb%ba%e5%88%b0%e4%bc%98%e5%8c%96%e5%85%a8%e6%94%bb%e7%95%a5\/"},"modified":"2026-03-11T19:35:40","modified_gmt":"2026-03-11T11:35:40","slug":"ultimate-guide-to-vps-hosting-setup-optimization-e7-9f-a5-e8-af-86","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/vps-hosting\/ultimate-guide-to-vps-hosting-setup-optimization-e7-9f-a5-e8-af-86\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 VPS: T\u1eeb l\u1ef1a ch\u1ecdn, thi\u1ebft l\u1eadp \u0111\u1ebfn t\u1ed1i \u01b0u h\u00f3a"},"content":{"rendered":"

\u0110\u1ed1i v\u1edbi nhi\u1ec1u nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 qu\u1ea3n tr\u1ecb vi\u00ean trang web, m\u00e1y ch\u1ee7 \u1ea3o ri\u00eang (Virtual Private Server \u2013 VPS) l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c d\u1ef1 \u00e1n tr\u1ef1c tuy\u1ebfn. N\u00f3 mang l\u1ea1i m\u1ee9c \u0111\u1ed9 ki\u1ec3m so\u00e1t v\u00e0 hi\u1ec7u su\u1ea5t cao h\u01a1n so v\u1edbi m\u00e1y ch\u1ee7 chia s\u1ebb, \u0111\u1ed3ng th\u1eddi v\u1eabn ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n so v\u1edbi m\u00e1y ch\u1ee7 \u0111\u1ed9c l\u1eadp. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c kh\u00e1i ni\u1ec7m c\u1ed1t l\u00f5i c\u1ee7a VPS ch\u00ednh l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean quan<\/p>\n\n\n\n

VPS (Virtual Private Server) l\u00e0 lo\u1ea1i m\u00e1y ch\u1ee7 ri\u00eang \u1ea3o \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00f4ng ngh\u1ec7 \u1ea3o h\u00f3a, nh\u1eb1m chia m\u1ed9t m\u00e1y ch\u1ee7 v\u1eadt l\u00fd th\u00e0nh nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng \u1ea3o \u0111\u1ed9c l\u1eadp. M\u1ed7i VPS c\u00f3 h\u1ec7 \u0111i\u1ec1u h\u00e0nh, kh\u00f4ng gian \u0111\u0129a, b\u1ed9 nh\u1edb v\u00e0 t\u00e0i nguy\u00ean CPU ri\u00eang bi\u1ec7t, v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c kh\u1edfi \u0111\u1ed9ng l\u1ea1i, c\u1ea5u h\u00ecnh ho\u1eb7c c\u00e0i \u0111\u1eb7t ph\u1ea7n m\u1ec1m gi\u1ed1ng nh\u01b0 vi\u1ec7c qu\u1ea3n l\u00fd m\u1ed9t m\u00e1y ch\u1ee7 v\u1eadt l\u00fd th\u00f4ng th\u01b0\u1eddng. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o s\u1ef1 c\u00e1ch ly t\u00e0i nguy\u00ean gi\u1eefa c\u00e1c ng\u01b0\u1eddi d\u00f9ng, gi\u00fap tr\u00e1nh \u0111\u01b0\u1ee3c nh\u1eefng \u1ea3nh h\u01b0\u1edfng ti\u00eau c\u1ef1c t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c (hi\u1ec7n t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u201chi\u1ec7u \u1ee9ng h\u00e0ng x\u00f3m\u201d).<\/p>\n\n\n\n

So v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 chia s\u1ebb (shared hosting), VPS cung c\u1ea5p quy\u1ec1n truy c\u1eadp v\u00e0o t\u00e0i kho\u1ea3n root v\u00e0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t to\u00e0n di\u1ec7n h\u01a1n, ph\u00f9 h\u1ee3p v\u1edbi nh\u1eefng trang web c\u1ea7n t\u00f9y ch\u1ec9nh m\u00f4i tr\u01b0\u1eddng, ch\u1ea1y c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 ho\u1eb7c x\u1eed l\u00fd l\u01b0\u1ee3ng l\u01b0u l\u01b0\u1ee3ng l\u1edbn. So v\u1edbi m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y (cloud servers), VPS truy\u1ec1n th\u1ed1ng th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u1ea5u h\u00ecnh t\u00e0i nguy\u00ean c\u1ed1 \u0111\u1ecbnh, gi\u00fap gi\u00e1 c\u1ea3 \u1ed5n \u0111\u1ecbnh h\u01a1n; trong khi \u0111\u00f3, m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y t\u1eadp trung nhi\u1ec1u h\u01a1n v\u00e0o kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng linh ho\u1ea1t theo nhu c\u1ea7u s\u1eed d\u1ee5ng. \u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c d\u1ef1 \u00e1n v\u1eeba v\u00e0 nh\u1ecf, blog c\u00e1 nh\u00e2n, m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m, trang web th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed nh\u1ecf, ho\u1eb7c ph\u1ea7n sau c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng, VPS l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn v\u1edbi t\u1ef7 l\u1ec7 gi\u00e1 tr\u1ecb r\u1ea5t cao.<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn mua m\u1ed9t m\u00e1y ch\u1ee7 VPS ph\u00f9 h\u1ee3p?<\/h2>\n\n\n\n

Tr\u01b0\u1edbc s\u1ef1 \u0111a d\u1ea1ng c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 VPS tr\u00ean th\u1ecb tr\u01b0\u1eddng, vi\u1ec7c \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ef1 \u1ed5n \u0111\u1ecbnh, hi\u1ec7u su\u1ea5t c\u1ee7a d\u1ef1 \u00e1n c\u0169ng nh\u01b0 tr\u1ea3i nghi\u1ec7m s\u1eed d\u1ee5ng l\u00e2u d\u00e0i.<\/p>\n\n\n\n

\u0110\u00e1nh gi\u00e1 c\u00e1c th\u00f4ng s\u1ed1 hi\u1ec7u su\u1ea5t c\u1ed1t l\u00f5i<\/h3>\n\n\n\n

\u0110i\u1ec1u \u0111\u1ea7u ti\u00ean c\u1ea7n quan t\u00e2m l\u00e0 c\u1ea5u h\u00ecnh ph\u1ea7n c\u1ee9ng. S\u1ed1 l\u01b0\u1ee3ng l\u00f5i CPU quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng x\u1eed l\u00fd song song c\u1ee7a m\u00e1y ch\u1ee7, \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c cung c\u1ea5p d\u1ecbch v\u1ee5. \u0110\u1ed9 l\u1edbn c\u1ee7a b\u1ed9 nh\u1edb \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 c\u00f3 th\u1ec3 ch\u1ea1y \u0111\u1ed3ng th\u1eddi v\u00e0 kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef d\u1eef li\u1ec7u t\u1ea1m th\u1eddi; khuy\u1ebfn ngh\u1ecb b\u1eaft \u0111\u1ea7u v\u1edbi \u00edt nh\u1ea5t 1GB b\u1ed9 nh\u1edb. V\u1ec1 lo\u1ea1i l\u01b0u tr\u1eef, \u1ed5 \u0111\u0129a SSD (\u1ed5 \u0111\u0129a th\u1ec3 r\u1eafn) c\u00f3 t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi d\u1eef li\u1ec7u nhanh h\u01a1n nhi\u1ec1u so v\u1edbi \u1ed5 \u0111\u0129a HDD truy\u1ec1n th\u1ed1ng, gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i c\u1ee7a trang web v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u. B\u0103ng th\u00f4ng v\u00e0 gi\u1edbi h\u1ea1n l\u01b0u l\u01b0\u1ee3ng quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng x\u1eed l\u00fd d\u1eef li\u1ec7u c\u1ee7a m\u00e1y ch\u1ee7; b\u1ea1n c\u1ea7n \u01b0\u1edbc l\u01b0\u1ee3ng c\u00e1c th\u00f4ng s\u1ed1 n\u00e0y d\u1ef1a tr\u00ean l\u01b0\u1ee3ng truy c\u1eadp c\u1ee7a trang web v\u00e0 quy m\u00f4 ngu\u1ed3n l\u1ef1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/p>\n\n\n

\n\n
\n HostArmada VPS Hosting<\/strong>\n
Cloud SSD\/NVMe + t\u0103ng t\u1ed1c b\u1ed9 nh\u1edb \u0111\u1ec7m nhi\u1ec1u l\u1edbp, h\u1ed7 tr\u1ee3 24\/7\/365, th\u1eddi gian ph\u1ea3n h\u1ed3i r\u00f5 r\u00e0ng, VPS 7 ng\u00e0y \u0111\u1ea3m b\u1ea3o ho\u00e0n ti\u1ec1n, thanh to\u00e1n ngay \u0111\u1ec3 nh\u1eadn \u01b0u \u0111\u00e3i gi\u1ea3m 50%<\/div>\n <\/div>\n\n
\n \n \n \"VPS\n \n \n <\/a>\n \n \n Truy c\u1eadp HostArmada <\/a>\n <\/div>\n <\/div>\n\n \n\n\n\n\n\n\n

Ch\u1ecdn H\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 C\u00f4ng ngh\u1ec7 \u1ea2o h\u00f3a<\/h3>\n\n\n\n

H\u1ec7 \u0111i\u1ec1u h\u00e0nh ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: c\u00e1c phi\u00ean b\u1ea3n Linux v\u00e0 Windows Server. Linux \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng nh\u1edd t\u00ednh m\u1edf ngu\u1ed3n, \u1ed5n \u0111\u1ecbnh v\u00e0 ti\u00eau th\u1ee5 \u00edt t\u00e0i nguy\u00ean; m\u1ed9t s\u1ed1 phi\u00ean b\u1ea3n ph\u1ed5 bi\u1ebfn bao g\u1ed3m Ubuntu, CentOS, Debian. Windows Server l\u1ea1i ph\u00f9 h\u1ee3p v\u1edbi nh\u1eefng \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 c\u1ee7a Microsoft nh\u01b0 ASP.NET, MSSQL.<\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 \u1ea3o h\u00f3a c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng. KVM l\u00e0 m\u1ed9t c\u00f4ng ngh\u1ec7 \u1ea3o h\u00f3a ho\u00e0n ch\u1ec9nh, cho hi\u1ec7u su\u1ea5t g\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi m\u00e1y t\u00ednh v\u1eadt l\u00fd, v\u00e0 hi\u1ec7n \u0111ang l\u00e0 l\u1ef1a ch\u1ecdn ph\u1ed5 bi\u1ebfn nh\u1ea5t. OpenVZ d\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7 container; kh\u1ea3 n\u0103ng b\u1ecb qu\u00e1 t\u1ea3i (overloaded) cao h\u01a1n, nh\u01b0ng gi\u00e1 th\u00e0nh t\u01b0\u01a1ng \u0111\u1ed1i r\u1ebb. \u0110\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi quan t\u00e2m \u0111\u1ebfn t\u00ednh \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u su\u1ea5t, n\u00ean \u01b0u ti\u00ean s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 VPS d\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7 KVM.<\/p>\n\n\n\n

C\u00e1c y\u1ebfu t\u1ed1 then ch\u1ed1t khi \u0111\u00e1nh gi\u00e1 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5<\/h3>\n\n\n\n

Uy t\u00edn v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 then ch\u1ed1t nh\u01b0ng th\u01b0\u1eddng b\u1ecb b\u1ecf qua. V\u1ecb tr\u00ed \u0111\u1ecba l\u00fd c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1eddi gian truy c\u1eadp trang web; do \u0111\u00f3, vi\u1ec7c l\u1ef1a ch\u1ecdn m\u1ed9t trung t\u00e2m d\u1eef li\u1ec7u n\u1eb1m g\u1ea7n nh\u00f3m ng\u01b0\u1eddi d\u00f9ng m\u1ee5c ti\u00eau l\u00e0 r\u1ea5t quan tr\u1ecdng. Ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1ng, bao g\u1ed3m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a b\u0103ng th\u00f4ng v\u00e0 kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i v\u1edbi c\u00e1c n\u00fat m\u1ea1ng ch\u00ednh, c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean nh\u1eefng \u0111\u00e1nh gi\u00e1 c\u1ee7a ng\u01b0\u1eddi d\u00f9ng kh\u00e1c ho\u1eb7c th\u00f4ng qua c\u00e1c b\u00e0i ki\u1ec3m th\u1eed<\/p>\n\n\n\n

Ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 sau b\u00e1n h\u00e0ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 th\u1eddi gian ph\u1ea3n h\u1ed3i v\u00e0 m\u1ee9c \u0111\u1ed9 chuy\u00ean nghi\u1ec7p c\u1ee7a b\u1ed9 ph\u1eadn h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt, \u0111\u00f3ng vai tr\u00f2 v\u00f4 c\u00f9ng quan tr\u1ecdng khi x\u1ea3y ra s\u1ef1 c\u1ed1. Ngo\u00e0i ra, c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ecbnh gi\u00e1 r\u00f5 r\u00e0ng v\u00e0 minh b\u1ea1ch, ph\u01b0\u01a1ng th\u1ee9c thanh to\u00e1n linh ho\u1ea1t (ch\u1eb3ng h\u1ea1n c\u00f3 h\u1ed7 tr\u1ee3 thanh to\u00e1n h\u00e0ng th\u00e1ng hay kh\u00f4ng), c\u0169ng nh\u01b0 vi\u1ec7c cung c\u1ea5p c\u00e1c d\u1ecbch v\u1ee5 b\u1ed5 sung nh\u01b0 sao l\u01b0u d\u1eef li\u1ec7u ho\u1eb7c t\u1ea1o b\u1ea3n sao ch\u00e9p (snapshot), c\u0169ng<\/p>\n\n\n\n

X\u00e2y d\u1ef1ng m\u1ed9t m\u00e1y ch\u1ee7 VPS t\u1eeb \u0111\u1ea7u<\/h2>\n\n\n\n

Sau khi mua VPS th\u00e0nh c\u00f4ng, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c thi\u1ebft l\u1eadp ban \u0111\u1ea7u v\u00e0 t\u0103ng c\u01b0\u1eddng t\u00ednh b\u1ea3o m\u1eadt, nh\u1eb1m t\u1ea1o n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc cho vi\u1ec7c tri\u1ec3n khai \u1ee9ng d\u1ee5ng.<\/p>\n\n\n\n

\u0110\u0103ng nh\u1eadp ban \u0111\u1ea7u v\u00e0 c\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng<\/h3>\n\n\n\n

Th\u00f4ng th\u01b0\u1eddng, c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 s\u1ebd cung c\u1ea5p m\u1eadt kh\u1ea9u ho\u1eb7c kh\u00f3a SSH cho ng\u01b0\u1eddi d\u00f9ng c\u00f3 quy\u1ec1n root. \u0110\u1ed1i v\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux, ch\u00fang ta s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 kh\u00e1ch SSH (SSH clients) \u0111\u1ec3 k\u1ebft n\u1ed1i. Ch\u00fang ta th\u1ef1c hi\u1ec7n c\u00e1c l\u1ec7nh trong terminal tr\u00ean m\u00e1y t\u00ednh c\u1ee7a m\u00ecnh. ssh root@\u4f60\u7684\u670d\u52a1\u5668IP\u5730\u5740<\/code>B\u1ea1n ch\u1ec9 c\u1ea7n nh\u1eadp m\u1eadt kh\u1ea9u r\u1ed3i \u0111\u0103ng nh\u1eadp.<\/p>\n\n\n\n

B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean sau khi \u0111\u0103ng nh\u1eadp l\u00e0 c\u1eadp nh\u1eadt c\u00e1c g\u00f3i ph\u1ea7n m\u1ec1m h\u1ec7 th\u1ed1ng l\u00ean phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t \u0111\u1ec3 s\u1eeda c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n. \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean Debian\/Ubuntu, h\u00e3y s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5\u2026 apt update && apt upgrade -y<\/code>\u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng d\u1ef1a tr\u00ean RHEL\/CentOS, h\u00e3y s\u1eed d\u1ee5ng\u2026 yum update -y<\/code> \u6216 dnf update -y<\/code>Sau khi qu\u00e1 tr\u00ecnh c\u1eadp nh\u1eadt ho\u00e0n t\u1ea5t, b\u1ea1n n\u00ean kh\u1edfi \u0111\u1ed9ng l\u1ea1i h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

T\u1ea1o ng\u01b0\u1eddi d\u00f9ng m\u1edbi v\u00e0 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt SSH<\/h3>\n\n\n\n

Vi\u1ec7c tr\u1ef1c ti\u1ebfp s\u1eed d\u1ee5ng t\u00e0i kho\u1ea3n root \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c l\u00e0 h\u00e0nh \u0111\u1ed9ng c\u00f3 nguy c\u01a1 cao. B\u1ea1n n\u00ean t\u1ea1o m\u1ed9t t\u00e0i kho\u1ea3n ng\u01b0\u1eddi d\u00f9ng th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c trao quy\u1ec1n sudo \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c c\u00f4ng vi\u1ec7c h\u00e0ng ng\u00e0y. V\u00ed d\u1ee5, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o m\u1ed9t t\u00e0i kho\u1ea3n c\u00f3 t\u00ean \u201cadmin\u201d.adduser admin<\/code>Sau \u0111\u00f3, h\u00e3y th\u00eam ng\u01b0\u1eddi d\u00f9ng \u0111\u00f3 v\u00e0o nh\u00f3m sudo:usermod -aG sudo admin<\/code>(Ubuntu) ho\u1eb7c usermod -aG wheel admin<\/code>(CentOS).<\/p>\n\n

\r\n\t\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\"M\u00e1y\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\tM\u00e1y ch\u1ee7 VPS 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\tB\u1ed9 x\u1eed l\u00fd AMD EPYC th\u1ebf h\u1ec7 m\u1edbi, b\u1ed9 nh\u1edb DDR5 + l\u01b0u tr\u1eef NVMe SSD, h\u1ed7 tr\u1ee3 tr\u00f2 chuy\u1ec7n tr\u1ef1c tuy\u1ebfn v\u00e0 \u0111i\u1ec7n tho\u1ea1i 24\/7<\/span>\r\n\t\t\t\t
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\u01afu \u0111\u00e3i t\u1ed1i \u0111a 32%<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp Bluehost VPS Hosting \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\tM\u00e1y ch\u1ee7 VPS UltaHost<\/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\tCPU AMD EPYC, \u0111\u1ea3m b\u1ea3o th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng 99.99%, b\u1ea3o \u0111\u1ea3m ho\u00e0n ti\u1ec1n trong 30 ng\u00e0y<\/span>\r\n\t\t\t\t
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\u01afu \u0111\u00e3i gi\u1ea3m 10% c\u00f3 th\u1eddi h\u1ea1n<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp VPS Hosting UltaHost \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

Ti\u1ebfp theo, h\u00e3y t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt cho SSH. Thay \u0111\u1ed5i c\u1ed5ng m\u1eb7c \u0111\u1ecbnh c\u1ee7a SSH (v\u00ed d\u1ee5: thay th\u00e0nh 2222), sau \u0111\u00f3 ch\u1ec9nh s\u1eeda c\u00e1c thi\u1ebft l\u1eadp li\u00ean quan. \/etc\/ssh\/sshd_config<\/code> T\u00ecm th\u1ea5y t\u1ec7p tin. Port 22<\/code> V\u00e0 h\u00e3y s\u1eeda \u0111\u1ed5i n\u00f3 th\u00e0nh\u2026 Port 2222<\/code>\u0110\u1ed3ng th\u1eddi, c\u1ea5m ng\u01b0\u1eddi d\u00f9ng c\u00f3 quy\u1ec1n root \u0111\u0103ng nh\u1eadp tr\u1ef1c ti\u1ebfp qua SSH. PermitRootLogin yes<\/code> \u0110\u1ed5i th\u00e0nh PermitRootLogin no<\/code>C\u00e1ch an to\u00e0n h\u01a1n l\u00e0 c\u1ea5u h\u00ecnh vi\u1ec7c \u0111\u0103ng nh\u1eadp b\u1eb1ng kh\u00f3a SSH v\u00e0 v\u00f4 hi\u1ec7u h\u00f3a ho\u00e0n to\u00e0n ch\u1ee9c n\u0103ng \u0111\u0103ng nh\u1eadp b\u1eb1ng m\u1eadt kh\u1ea9u. Sau khi th\u1ef1c hi\u1ec7n t\u1ea5t c\u1ea3 c\u00e1c thay \u0111\u1ed5i, h\u00e3y kh\u1edfi \u0111\u1ed9ng l\u1ea1i d\u1ecbch v\u1ee5 SSH:systemctl restart sshd<\/code>H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n \u0111\u00e3 th\u1eed \u0111\u0103ng nh\u1eadp th\u00e0nh c\u00f4ng tr\u00ean c\u1ed5ng m\u1edbi tr\u01b0\u1edbc khi t\u1eaft terminal \u0111\u1ecba ph\u01b0\u01a1ng.<\/p>\n\n\n\n

C\u1ea5u h\u00ecnh t\u01b0\u1eddng l\u1eeda c\u01a1 b\u1ea3n<\/h3>\n\n\n\n

T\u01b0\u1eddng l\u1eeda l\u00e0 tuy\u1ebfn ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean c\u1ee7a m\u00e1y ch\u1ee7. H\u1ec7 \u0111i\u1ec1u h\u00e0nh Ubuntu th\u01b0\u1eddng s\u1eed d\u1ee5ng UFW, trong khi CentOS 7\/8 s\u1eed d\u1ee5ng firewalld. L\u1ea5y UFW l\u00e0m v\u00ed d\u1ee5, tr\u01b0\u1edbc ti\u00ean c\u1ea7n cho ph\u00e9p c\u00e1c c\u1ed5ng SSH m\u1edbi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng:ufw allow 2222\/tcp<\/code>Sau \u0111\u00f3, h\u00e3y b\u1eadt t\u01b0\u1eddng l\u1eeda:ufw enable<\/code>Khi tri\u1ec3n khai c\u00e1c d\u1ecbch v\u1ee5 Web sau n\u00e0y, h\u00e3y m\u1edf c\u00e1c c\u1ed5ng t\u01b0\u01a1ng \u1ee9ng (ch\u1eb3ng h\u1ea1n nh\u01b0 80, 443).<\/p>\n\n\n\n

T\u1ed1i \u01b0u h\u00f3a hi\u1ec7u n\u0103ng m\u00e1y ch\u1ee7 v\u00e0 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt<\/h2>\n\n\n\n

M\u1ed9t m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u00fang c\u00e1ch kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ec3 mang l\u1ea1i tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng t\u1ed1t h\u01a1n, m\u00e0 c\u00f2n c\u00f3 th\u1ec3 ch\u1ed1ng l\u1ea1i c\u00e1c m\u1ed1i \u0111e d\u1ecda b\u1ea3o m\u1eadt ph\u1ed5 bi\u1ebfn m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n\n\n\n

\u0110i\u1ec1u ch\u1ec9nh hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng<\/h3>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 web, vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh c\u00e1c tham s\u1ed1 c\u1ee7a h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux c\u00f3 th\u1ec3 gi\u00fap t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u n\u0103ng m\u1ea1ng v\u00e0 s\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i. B\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c n\u00e0y b\u1eb1ng c\u00e1ch s\u1eeda \u0111\u1ed5i c\u00e1c t\u1ec7p c\u1ea5u h\u00ecnh li\u00ean quan trong h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux. \/etc\/sysctl.conf<\/code> T\u1ec7p tin: H\u00e3y \u0111i\u1ec1u ch\u1ec9nh c\u00e1c th\u1ee9 nh\u01b0\u2026 net.core.somaxconn<\/code>C\u00e1c tham s\u1ed1 nh\u01b0 \u201c\u0111\u1ed9 d\u00e0i h\u00e0ng \u0111\u1ee3i k\u1ebft n\u1ed1i\u201d (connection queue length) l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n \u0111\u01b0\u1ee3c theo d\u00f5i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng. \u0110\u1ed1i v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 s\u1eed d\u1ee5ng Nginx ho\u1eb7c Apache, b\u1ea1n c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh c\u00e1c thi\u1ebft l\u1eadp li\u00ean quan \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng ti\u1ebfn tr\u00ecnh x\u1eed l\u00fd (worker_processes) v\u00e0 s\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i (worker_connections) d\u1ef1a tr\u00ean dung l\u01b0\u1ee3ng b\u1ed9 nh\u1edb c\u00f3 s\u1eb5n.<\/p>\n\n\n\n

Vi\u1ec7c tri\u1ec3n khai c\u00e1c c\u01a1 ch\u1ebf \u0111\u1ec7m (cache) hi\u1ec7u qu\u1ea3 l\u00e0 c\u00f4ng c\u1ee5 h\u1eefu hi\u1ec7u \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng. \u0110\u1ed1i v\u1edbi c\u00e1c trang web \u0111\u1ed9ng, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng OPcache \u0111\u1ec3 t\u0103ng t\u1ed1c qu\u00e1 tr\u00ecnh th\u1ef1c thi m\u00e3 PHP, c\u0169ng nh\u01b0 Redis ho\u1eb7c Memcached \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u00e0 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng trong b\u1ed9 nh\u1edb \u0111\u1ec7m. \u0110\u1ed1i v\u1edbi c\u00e1c t\u00e0i nguy\u00ean t\u0129nh, n\u00ean s\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng n\u00e9n d\u1eef li\u1ec7u b\u1eb1ng gzip c\u1ee7a Nginx k\u1ebft h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft l\u1eadp ti\u00eau \u0111\u1ec1 \u0111\u1ec7m (cache headers) trong tr\u00ecnh duy\u1ec7t \u0111\u1ec3 t\u0103ng t\u1ed1c qu\u00e1 tr\u00ecnh truy\u1ec1n t\u1ea3i.<\/p>\n\n\n\n

B\u1ea3o tr\u00ec an ninh li\u00ean t\u1ee5c<\/h3>\n\n\n\n

An ninh l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh li\u00ean t\u1ee5c. Ngo\u00e0i c\u00e1c thi\u1ebft l\u1eadp ban \u0111\u1ea7u, b\u1ea1n c\u1ea7n c\u1ea5u h\u00ecnh c\u00e1c b\u1ea3n c\u1eadp nh\u1eadt b\u1ea3o m\u1eadt t\u1ef1 \u0111\u1ed9ng (\u0111\u1ed1i v\u1edbi Ubuntu, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 t\u01b0\u01a1ng \u1ee9ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n \u0111i\u1ec1u n\u00e0y).unattended-upgrades<\/code>S\u1eed d\u1ee5ng \u0111\u1ecbnh k\u1ef3.fail2ban<\/code>C\u00e1c c\u00f4ng c\u1ee5 n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 qu\u00e9t c\u00e1c b\u1ea3n ghi nh\u1eadt k\u00fd (log files) v\u00e0 t\u1ef1 \u0111\u1ed9ng ch\u1eb7n c\u00e1c \u0111\u1ecba ch\u1ec9 IP \u0111\u00e3 th\u1ea5t b\u1ea1i trong nhi\u1ec1u l\u1ea7n c\u1ed1 g\u1eafng \u0111\u0103ng nh\u1eadp.<\/p>\n\n\n

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M\u1ed9t trong nh\u1eefng c\u00f4ng vi\u1ec7c quan tr\u1ecdng nh\u1ea5t l\u00e0 sao l\u01b0u d\u1eef li\u1ec7u \u0111\u1ecbnh k\u1ef3. B\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng chi\u1ebfn l\u01b0\u1ee3c k\u1ebft h\u1ee3p gi\u1eefa vi\u1ec7c t\u1ea1o b\u1ea3n sao l\u01b0u (snapshot) v\u00e0 sao l\u01b0u d\u1eef li\u1ec7u \u0111\u1ebfn n\u01a1i kh\u00e1c (offsite backup). Nhi\u1ec1u b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n VPS cung c\u1ea5p t\u00ednh n\u0103ng t\u1ea1o b\u1ea3n sao l\u01b0u ch\u1ec9 v\u1edbi m\u1ed9t c\u00fa nh\u1ea5p chu\u1ed9t, gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng kh\u00f4i ph\u1ee5c h\u1ec7 th\u1ed1ng nhanh ch\u00f3ng. \u0110\u1ed3ng th\u1eddi, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 rsync ho\u1eb7c rclone \u0111\u1ec3 \u0111\u1ed3ng b\u1ed9 h\u00f3a d\u1eef li\u1ec7u quan tr\u1ecdng (t\u1ec7p web, c\u01a1 s\u1edf d\u1eef li\u1ec7u, t\u1eadp tin c\u1ea5u h\u00ecnh) \u0111\u1ecbnh k\u1ef3 sang m\u1ed9t kh\u00f4ng gian l\u01b0u tr\u1eef kh\u00e1c ho\u1eb7c l\u01b0u tr\u1eef \u0111\u00e1m m<\/p>\n\n\n\n

Vi\u1ec7c theo d\u00f5i t\u00ecnh h\u00ecnh s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean c\u1ee7a m\u00e1y ch\u1ee7 (CPU, b\u1ed9 nh\u1edb, \u0111\u0129a, b\u0103ng th\u00f4ng) c\u0169ng v\u00f4 c\u00f9ng quan tr\u1ecdng. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t nh\u1eb9 nh\u01b0 Netdata ho\u1eb7c Prometheus k\u1ebft h\u1ee3p v\u1edbi Grafana \u0111\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c c\u1ea3nh b\u00e1o k\u1ecbp th\u1eddi khi c\u00f3 s\u1ef1 c\u1ed1 x\u1ea3y ra.<\/p>\n\n\n\n

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

VPS (Virtual Private Server) l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1nh m\u1ebd v\u00e0 linh ho\u1ea1t d\u00e0nh cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n c\u00e1 nh\u00e2n c\u0169ng nh\u01b0 c\u00e1c doanh nghi\u1ec7p v\u1eeba v\u00e0 nh\u1ecf. T\u1eeb vi\u1ec7c hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t c\u1ee7a VPS, \u0111\u1ebfn vi\u1ec7c \u0111\u00e1nh gi\u00e1 c\u1ea9n th\u1eadn c\u00e1c th\u00f4ng s\u1ed1 hi\u1ec7u n\u0103ng v\u00e0 uy t\u00edn c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 tr\u01b0\u1edbc khi mua, ti\u1ebfp theo l\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc thi\u1ebft l\u1eadp ban \u0111\u1ea7u v\u00e0 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt m\u1ed9t c\u00e1ch nghi\u00eam ng\u1eb7t, v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh, hi\u1ec7u qu\u1ea3 th\u00f4ng qua vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a v\u00e0 b\u1ea3o tr\u00ec th\u01b0\u1eddng xuy\u00ean \u2013 m\u1ed7i b\u01b0\u1edbc trong qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ec1u c\u1ef1c k\u1ef3 quan tr\u1ecd<\/p>\n\n\n\n

Vi\u1ec7c n\u1eafm v\u1eefng k\u1ef9 n\u0103ng qu\u1ea3n l\u00fd VPS c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t ho\u00e0n to\u00e0n m\u00f4i tr\u01b0\u1eddng tr\u1ef1c tuy\u1ebfn c\u1ee7a m\u00ecnh, t\u1ef1 do c\u1ea5u h\u00ecnh c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ea7n m\u1ec1m theo nhu c\u1ea7u, v\u00e0 trong qu\u00e1 tr\u00ecnh \u0111\u00f3 t\u00edch l\u0169y \u0111\u01b0\u1ee3c nh\u1eefng kinh nghi\u1ec7m qu\u00fd b\u00e1u v\u1ec1 v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec h\u1ec7 th\u1ed1ng. D\u00f9 l\u00e0 tri\u1ec3n khai m\u1ed9t trang blog \u0111\u01a1n gi\u1ea3n hay v\u1eadn h\u00e0nh m\u1ed9t \u1ee9ng d\u1ee5ng kinh doanh ph\u1ee9c t\u1ea1p, m\u1ed9t VPS \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd t\u1ed1t \u0111\u1ec1u l\u00e0 n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc v\u00e0 m\u1ea1nh m\u1ebd.<\/p>\n\n\n\n

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

VPS, hosting \u1ea3o v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n\n\n\n

M\u00e1y ch\u1ee7 \u1ea3o (Virtual Host) l\u00e0 lo\u1ea1i h\u00ecnh m\u00e1y ch\u1ee7 m\u00e0 nhi\u1ec1u trang web c\u00f9ng s\u1eed d\u1ee5ng chung m\u1ed9t b\u1ed9 t\u00e0i nguy\u00ean ph\u1ea7n c\u1ee9ng v\u00e0 ph\u1ea7n m\u1ec1m c\u1ee7a m\u00e1y ch\u1ee7. Quy\u1ec1n truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng b\u1ecb h\u1ea1n ch\u1ebf, vi\u1ec7c qu\u1ea3n l\u00fd t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n nh\u01b0ng t\u00ednh linh ho\u1ea1t th\u1ea5p. Ng\u01b0\u1ee3c l\u1ea1i, VPS (Virtual Private Server) s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 \u1ea3o h\u00f3a \u0111\u1ec3 chia m\u1ed9t m\u00e1y ch\u1ee7 v\u1eadt l\u00fd th\u00e0nh nhi\u1ec1u ph\u00e2n v\u00f9ng \u0111\u1ed9c l\u1eadp; m\u1ed7i ph\u00e2n v\u00f9ng c\u00f3 t\u00e0i nguy\u00ean ri\u00eang bi\u1ec7t v\u00e0 quy\u1ec1n truy c\u1eadp h\u1ec7 th\u1ed1ng \u0111\u1ea7y \u0111\u1ee7, gi\u00fap hi\u1ec7u n\u0103ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 d\u1ec5 ki\u1ec3m so\u00e1t h\u01a1n. M\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y (Cloud Server) th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean c\u00e1c c\u1ee5m m\u00e1y ch\u1ee7 l\u1edbn, cho ph\u00e9p t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng ho\u1eb7c thu h\u1eb9p theo nhu c\u1ea7u s\u1eed d\u1ee5ng, v\u1edbi m\u00f4 h\u00ecnh thanh to\u00e1n theo t\u1eebng l<\/p>\n\n\n\n

T\u00f4i n\u00ean ch\u1ecdn VPS h\u1ec7 th\u1ed1ng Linux hay Windows?<\/h3>\n\n\n\n

\u0110i\u1ec1u n\u00e0y ch\u1ee7 y\u1ebfu ph\u1ee5 thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng m\u00e0 b\u1ea1n d\u1ef1 \u0111\u1ecbnh tri\u1ec3n khai. N\u1ebfu trang web ho\u1eb7c \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean c\u00e1c c\u00f4ng ngh\u1ec7 m\u00e3 ngu\u1ed3n m\u1edf nh\u01b0 PHP, Python, Ruby, MySQL, v.v., h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux (nh\u01b0 Ubuntu, CentOS) s\u1ebd l\u00e0 l\u1ef1a ch\u1ecdn hi\u1ec7u qu\u1ea3 h\u01a1n, \u1ed5n \u0111\u1ecbnh h\u01a1n v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n. Tuy nhi\u00ean, n\u1ebfu doanh nghi\u1ec7p c\u1ee7a b\u1ea1n y\u00eau c\u1ea7u s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 nh\u01b0 ASP.NET, MSSQL, PowerShell ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng d\u00e0nh cho m\u00f4i tr\u01b0\u1eddng Windows, b\u1ea1n s\u1ebd ph\u1ea3i ch\u1ecdn Windows Server VPS. Tuy nhi\u00ean, chi ph\u00ed b\u1ea3n quy\u1ec1n cho Windows Server VPS th\u01b0\u1eddng s\u1ebd cao h\u01a1n so v\u1edbi Linux VPS c\u00f9ng c\u1ea5u h\u00ecnh.<\/p>\n\n\n\n

T\u1ea1i sao VPS c\u1ee7a t\u00f4i truy c\u1eadp ch\u1eadm?<\/h3>\n\n\n\n

T\u1ed1c \u0111\u1ed9 truy c\u1eadp ch\u1eadm c\u00f3 th\u1ec3 do nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1c nhau g\u00e2y ra. \u0110\u1ea7u ti\u00ean, h\u00e3y ki\u1ec3m tra xem v\u1ecb tr\u00ed trung t\u00e2m d\u1eef li\u1ec7u VPS c\u00f3 xa nh\u00f3m kh\u00e1ch h\u00e0ng m\u1ee5c ti\u00eau c\u1ee7a b\u1ea1n kh\u00f4ng; kho\u1ea3ng c\u00e1ch v\u1eadt l\u00fd c\u00f3 th\u1ec3 l\u00e0m t\u0103ng \u0111\u1ed9 tr\u1ec5 m\u1ea1ng. Th\u1ee9 hai, ngu\u1ed3n l\u1ef1c tr\u00ean m\u00e1y ch\u1ee7 c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ee7, ch\u1eb3ng h\u1ea1n nh\u01b0 CPU ho\u1ea1t \u0111\u1ed9ng \u1edf m\u1ee9c t\u1ed1i \u0111a trong th\u1eddi gian d\u00e0i, b\u1ed9 nh\u1edb b\u1ecb c\u1ea1n ki\u1ec7t ho\u1eb7c hi\u1ec7u n\u0103ng I\/O \u0111\u0129a b\u1ecb h\u1ea1n ch\u1ebf. Ti\u1ebfp theo, c\u1ea5u h\u00ecnh ph\u1ea7n m\u1ec1m ch\u1ea1y tr\u00ean m\u00e1y ch\u1ee7 c\u00f3 th\u1ec3 ch\u01b0a \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 web kh\u00f4ng ph\u00f9 h\u1ee3p ho\u1eb7c kh\u00f4ng k\u00edch ho\u1ea1t ch\u1ee9c n\u0103ng l\u01b0u tr\u1eef \u0111\u1ec7m (cache). Cu\u1ed1i c\u00f9ng, c\u0169ng c\u00f3 th\u1ec3 do ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1ng c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 VPS k\u00e9m ho\u1eb7c c\u00f3 v\u1ea5n \u0111\u1ec1 v\u1edbi \u0111\u01b0\u1eddng d\u1eabn qu\u1ed1c t\u1ebf.<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an ninh d\u1eef li\u1ec7u tr\u00ean VPS c\u1ee7a t\u00f4i?<\/h3>\n\n\n\n

\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o an ninh d\u1eef li\u1ec7u, c\u1ea7n \u00e1p d\u1ee5ng nhi\u1ec1u bi\u1ec7n ph\u00e1p kh\u00e1c nhau. \u1ede c\u1ea5p \u0111\u1ed9 h\u1ec7 th\u1ed1ng, c\u1ea7n tu\u00e2n th\u1ee7 nguy\u00ean t\u1eafc \u201cc\u1ea5p quy\u1ec1n t\u1ed1i thi\u1ec3u\u201d, v\u00f4 hi\u1ec7u h\u00f3a t\u00ednh n\u0103ng \u0111\u0103ng nh\u1eadp t\u1eeb xa v\u1edbi t\u00e0i kho\u1ea3n root, s\u1eed d\u1ee5ng kh\u00f3a SSH v\u00e0 thay \u0111\u1ed5i c\u1ed5ng m\u1eb7c \u0111\u1ecbnh, \u0111\u1ed3ng th\u1eddi c\u1ea5u h\u00ecnh t\u01b0\u1eddng l\u1eeda m\u1ed9t c\u00e1ch ch\u1eb7t ch\u1ebd. \u1ede c\u1ea5p \u0111\u1ed9 \u1ee9ng d\u1ee5ng, c\u1ea7n \u0111\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c ph\u1ea7n m\u1ec1m (h\u1ec7 \u0111i\u1ec1u h\u00e0nh, m\u00e1y ch\u1ee7 web, c\u01a1 s\u1edf d\u1eef li\u1ec7u, h\u1ec7 qu\u1ea3n tr\u1ecb n\u1ed9i dung \u2013 CMS) \u0111\u1ec1u \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt l\u00ean phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t \u0111\u1ec3 kh\u1eafc ph\u1ee5c c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt. \u1ede c\u1ea5p \u0111\u1ed9 d\u1eef li\u1ec7u, c\u1ea7n thi\u1ebft l\u1eadp ch\u1ebf \u0111\u1ed9 sao l\u01b0u t\u1ef1 \u0111\u1ed9ng \u0111\u1ecbnh k\u1ef3 v\u00e0 l\u01b0u c\u00e1c t\u1ec7p sao l\u01b0u \u1edf n\u01a1i kh\u00e1c xa so v\u1edbi m\u00e1y ch\u1ee7 VPS. Ngo\u00e0i ra, n\u00ean s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u v\u00e0 kh\u00f3a m\u1ea1nh m\u1ebd, v\u00e0 c\u00e2n nh\u1eafc vi\u1ec7c c\u00e0i \u0111\u1eb7t c\u00e1c c\u00f4ng c\u1ee5 ph\u00e1t hi\u1ec7n v\u00e0 b\u1ea3o v\u1ec7 tr\u01b0\u1edbc c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng.<\/p>","protected":false},"excerpt":{"rendered":"

B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng c\u00e1c kh\u00e1i ni\u1ec7m c\u1ed1t l\u00f5i c\u1ee7a VPS (Virtual Private Server) c\u0169ng nh\u01b0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa VPS v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 m\u00e1y ch\u1ee7 chia s\u1ebb (shared hosting) v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y (cloud hosting). B\u00e0i vi\u1ebft c\u0169ng gi\u1ea3i th\u00edch chi ti\u1ebft c\u00e1ch l\u1ef1a ch\u1ecdn VPS d\u1ef1a tr\u00ean c\u00e1c th\u00f4ng s\u1ed1 nh\u01b0 CPU, b\u1ed9 nh\u1edb, dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef, v.v., \u0111\u1ed3ng th\u1eddi cung c\u1ea5p c\u00e1c b\u01b0\u1edbc th\u1ef1c h\u00e0nh t\u1eeb vi\u1ec7c kh\u1edfi t\u1ea1o h\u1ec7 th\u1ed1ng, t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt cho \u0111\u1ebfn t\u1ed1i \u01b0u h\u00f3a c\u01a1 b\u1ea3n. \u0110\u00e2y l\u00e0 m\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 VPS d\u00e0nh cho c\u00e1c<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"knowledge_category":[275],"class_list":["post-12362317","knowledge_post","type-knowledge_post","status-publish","hentry","knowledge_category-vps-hosting"],"acf":{"site_seo_keywords":"VPS\u4e3b\u673a,\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668,VPS\u9009\u8d2d\u6307\u5357,VPS\u642d\u5efa\u6559\u7a0b,\u670d\u52a1\u5668\u4f18\u5316,Linux VPS,KVM\u865a\u62df\u5316,VPS\u6027\u80fd\u53c2\u6570"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12362317","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\/12362317\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12362317"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12362317"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12362317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}