{"id":12372786,"date":"2026-03-16T18:33:26","date_gmt":"2026-03-16T10:33:26","guid":{"rendered":"https:\/\/www.likacloud.com\/knowledge\/%e4%ba%91%e4%b8%bb%e6%9c%ba%e9%80%89%e8%b4%ad%e4%b8%8e%e9%85%8d%e7%bd%ae%e5%85%a8%e6%8c%87%e5%8d%97%ef%bc%9a%e4%bb%8e%e5%85%a5%e9%97%a8%e5%88%b0%e7%b2%be%e9%80%9a%e7%9a%84%e6%a0%b8%e5%bf%83%e6%8a%80\/"},"modified":"2026-06-04T17:01:55","modified_gmt":"2026-06-04T09:01:55","slug":"cloud-server-selection-configuration-guide-core-skills","status":"publish","type":"knowledge_post","link":"https:\/\/www.likacloud.com\/vi\/knowledge\/cloud-hosting\/cloud-server-selection-configuration-guide-core-skills\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 l\u1ef1a ch\u1ecdn v\u00e0 c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y: K\u1ef9 thu\u1eadt c\u1ed1t l\u00f5i t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao"},"content":{"rendered":"

Trong l\u00e0n s\u00f3ng s\u1ed1 h\u00f3a, m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y \u0111\u00e3 tr\u1edf th\u00e0nh c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng c\u1ed1t l\u00f5i cho c\u00e1c doanh nghi\u1ec7p v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n c\u00e1 nh\u00e2n trong vi\u1ec7c x\u00e2y d\u1ef1ng \u1ee9ng d\u1ee5ng v\u00e0 tri\u1ec3n khai d\u1ecbch v\u1ee5. N\u00f3 mang l\u1ea1i nhi\u1ec1u \u01b0u \u0111i\u1ec3m nh\u01b0 thanh to\u00e1n theo nhu c\u1ea7u, kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng linh ho\u1ea1t, v\u00e0 mi\u1ec5n tr\u1eeb tr\u00e1ch nhi\u1ec7m b\u1ea3o tr\u00ec ph\u1ea7n c\u1ee9ng. Tuy nhi\u00ean, v\u1edbi s\u1ef1 \u0111a d\u1ea1ng c\u1ee7a c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 v\u00e0 t\u00f9y ch\u1ecdn c\u1ea5u h\u00ecnh tr\u00ean th\u1ecb tr\u01b0\u1eddng, vi\u1ec7c \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t v\u00e0 th\u1ef1c hi\u1ec7n c\u1ea5u h\u00ecnh hi\u1ec7u qu\u1ea3 l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng quan tr\u1ecdng. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd ph\u00e2n t\u00edch m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng to\u00e0n b\u1ed9 quy tr\u00ecnh t\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u1ebfn c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y, gi\u00fap b\u1ea1n n\u1eafm v\u1eefng nh\u1eefng k<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y d\u1ef1a tr\u00ean nhu c\u1ea7u<\/h2>\n\n\n\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00e1y ch\u1ee7 cloud kh\u00f4ng ph\u1ea3i c\u1ee9 c\u1ea5u h\u00ecnh cao th\u00ec c\u00e0ng t\u1ed1t; \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i ph\u00f9 h\u1ee3p ch\u00ednh x\u00e1c v\u1edbi nhu c\u1ea7u kinh doanh c\u1ee7a b\u1ea3n th\u00e2n. Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea5u h\u00ecnh cao m\u1ed9t c\u00e1ch m\u00f9 qu\u00e1ng s\u1ebd d\u1eabn \u0111\u1ebfn l\u00e3ng ph\u00ed t\u00e0i nguy\u00ean, trong khi c\u1ea5u h\u00ecnh th\u1ea5p s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 \u1ed5n \u0111\u1ecb<\/p>\n\n\n\n

X\u00e1c \u0111\u1ecbnh r\u00f5 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ed1t l\u00f5i (core use cases) c\u1ee7a \u1ee9ng d\u1ee5ng.<\/h3>\n\n\n\n

Tr\u01b0\u1edbc h\u1ebft, b\u1ea1n c\u1ea7n x\u00e1c \u0111\u1ecbnh r\u00f5 m\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y. \u0110\u00f3 l\u00e0 \u0111\u1ec3 x\u00e2y d\u1ef1ng trang web ch\u00ednh th\u1ee9c c\u1ee7a doanh nghi\u1ec7p, ph\u00e1t tri\u1ec3n m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m, cung c\u1ea5p d\u1ecbch v\u1ee5 c\u01a1 s\u1edf d\u1eef li\u1ec7u, v\u1eadn h\u00e0nh c\u00e1c \u1ee9ng d\u1ee5ng web c\u00f3 l\u01b0\u1ee3ng truy c\u1eadp l\u1edbn, hay th\u1ef1c hi\u1ec7n ph\u00e2n t\u00edch d\u1eef li\u1ec7u l\u1edbn (big data) ho\u1eb7c h\u1ecdc m\u00e1y (machine learning)? M\u1ed7i tr\u01b0\u1eddng h\u1ee3p \u0111\u1ec1u c\u00f3 nh\u1eefng y\u00eau c\u1ea7u kh\u00e1c nhau v\u1ec1 kh\u1ea3 n\u0103ng t\u00ednh to\u00e1n, b\u1ed9 nh\u1edb, l\u01b0u tr\u1eef v\u00e0 m\u1ea1ng. V\u00ed d\u1ee5, c\u00e1c \u1ee9ng d\u1ee5ng d\u00f9ng \u0111\u1ec3 hi\u1ec3n th\u1ecb n\u1ed9i dung tr\u00ean trang web ch\u00ednh th\u1ee9c kh\u00f4ng \u0111\u00f2i h\u1ecfi nhi\u1ec1u CPU, nh\u01b0ng c\u1ea7n m\u1ed9t m\u1ea1ng \u1ed5n \u0111\u1ecbnh v\u00e0 l\u01b0\u1ee3ng l\u01b0u tr\u1eef v\u1eeba ph\u1ea3i; trong khi \u0111\u00f3, c\u00e1c \u1ee9ng d\u1ee5ng c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u1ea1i c\u1ea7n hi\u1ec7u n\u0103ng I\/O m\u1ea1nh m\u1ebd v\u00e0 dung l\u01b0\u1ee3ng b\u1ed9 nh\u1edb l\u1edbn.<\/p>\n

\u0110\u1ecdc th\u00eam Doanh nghi\u1ec7p l\u1ef1a ch\u1ecdn v\u00e0 t\u1ed1i \u01b0u h\u00f3a m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y nh\u01b0 th\u1ebf n\u00e0o: H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n t\u1eeb nh\u1eadp m\u00f4n \u0111\u1ebfn th\u00e0nh th\u1ea1o<\/a>\u3002<\/p>\n\n\n\n\n

\u0110\u00e1nh gi\u00e1 hi\u1ec7u n\u0103ng v\u00e0 c\u00e1c tham s\u1ed1 c\u1ea5u h\u00ecnh<\/h3>\n\n\n\n

C\u00e1c tham s\u1ed1 c\u1ea5u h\u00ecnh c\u1ed1t l\u00f5i bao g\u1ed3m vCPU (l\u00f5i \u1ea3o), b\u1ed9 nh\u1edb, \u1ed5 \u0111\u0129a v\u00e0 b\u0103ng th\u00f4ng. vCPU v\u00e0 b\u1ed9 nh\u1edb quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng t\u00ednh to\u00e1n c\u1ee7a m\u00e1y ch\u1ee7; \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi nhi\u1ec1u t\u00ednh to\u00e1n (nh\u01b0 m\u00e3 h\u00f3a video, t\u00ednh to\u00e1n khoa h\u1ecdc), n\u00ean \u01b0u ti\u00ean l\u1ef1a ch\u1ecdn CPU c\u00f3 t\u1ea7n s\u1ed1 xung nh\u1ecbp cao v\u00e0 nhi\u1ec1u l\u00f5i. Dung l\u01b0\u1ee3ng b\u1ed9 nh\u1edb \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u qu\u1ea3 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u1ee9ng d\u1ee5ng v\u00e0 kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef d\u1eef li\u1ec7u trong b\u1ed9 nh\u1edb \u0111\u1ec7m.<\/p>\n\n\r\n

\r\n \r\n
\r\n \r\n M\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y SurferCloud <\/strong>\r\n
Ph\u01b0\u01a1ng th\u1ee9c thanh to\u00e1n theo l\u01b0\u1ee3ng s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5; b\u0103ng th\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u1ed9t c\u00e1ch \u0111\u1ed9c quy\u1ec1n, kh\u00f4ng gi\u1edbi h\u1ea1n l\u01b0\u1ee3ng d\u1eef li\u1ec7u truy\u1ec1n t\u1ea3i. D\u1ecbch v\u1ee5 h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng 24\/7\/365, v\u1edbi h\u01a1n 17 trung t\u00e2m d\u1eef li\u1ec7u tr\u00ean to\u00e0n th\u1ebf gi\u1edbi. Ch\u00fang t\u00f4i cam k\u1ebft m\u1ee9c \u0111\u1ed9 s\u1eb5n s\u00e0ng ph\u1ee5c v\u1ee5 (SLA) l\u00ean \u0111\u1ebfn 99,95<\/div>\r\n <\/div>\r\n\r\n
\r\n \r\n \"Bi\u1ec3u\r\n \r\n <\/a>\r\n \r\n \r\n Truy c\u1eadp trang <\/a>\r\n <\/div>\r\n<\/div>\n\n\n\n\n\n\n

V\u1ec1 ph\u1ea7n \u1ed5 \u0111\u0129a, c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn lo\u1ea1i \u1ed5 \u0111\u0129a (ch\u1eb3ng h\u1ea1n nh\u01b0 \u1ed5 \u0111\u0129a SSD tr\u00ean n\u1ec1n t\u1ea3ng \u0111\u00e1m m\u00e2y, SSD hi\u1ec7u n\u0103ng cao, ESSD), dung l\u01b0\u1ee3ng v\u00e0 IOPS (s\u1ed1 l\u01b0\u1ee3ng thao t\u00e1c \u0111\u1ecdc\/ghi tr\u00ean m\u1ed7i gi\u00e2y). \u1ed4 \u0111\u0129a SSD v\u01b0\u1ee3t tr\u1ed9i h\u01a1n nhi\u1ec1u so v\u1edbi \u1ed5 \u0111\u0129a HDD truy\u1ec1n th\u1ed1ng v\u1ec1 kh\u1ea3 n\u0103ng \u0111\u1ecdc\/ghi ng\u1eabu nhi\u00ean, v\u00e0 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng nh\u1ea1y c\u1ea3m v\u1edbi I\/O nh\u01b0 c\u01a1 s\u1edf d\u1eef li\u1ec7u, h\u1ec7 th\u1ed1ng nh\u1eadt k\u00fd, v.v.<\/p>\n\n\n\n

B\u0103ng th\u00f4ng m\u1ea1ng c\u00f4ng c\u1ed9ng quy\u1ebft \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 trao \u0111\u1ed5i d\u1eef li\u1ec7u gi\u1eefa m\u00e1y ch\u1ee7 v\u00e0 m\u1ea1ng ngo\u00e0i. B\u1ea1n c\u1ea7n l\u1ef1a ch\u1ecdn b\u0103ng th\u00f4ng ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean l\u01b0\u1ee3ng truy c\u1eadp trang web d\u1ef1 ki\u1ebfn ho\u1eb7c l\u01b0\u1ee3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i b\u1edfi \u1ee9ng d\u1ee5ng. \u0110\u1ed1i v\u1edbi c\u00e1c d\u1ecbch v\u1ee5 c\u00f3 l\u01b0\u1ee3ng l\u01b0u l\u01b0\u1ee3ng thay \u0111\u1ed5i th\u01b0\u1eddng xuy\u00ean, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn ch\u1ebf \u0111\u1ed9 thanh to\u00e1n theo l\u01b0\u1ee3ng s\u1eed d\u1ee5ng \u0111\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n\n\n\n

L\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 v\u00e0 c\u00e1c node \u0111\u1ecba l\u00fd \u0111\u00e1ng tin c\u1eady<\/h3>\n\n\n\n

Th\u01b0\u01a1ng hi\u1ec7u, n\u0103ng l\u1ef1c k\u1ef9 thu\u1eadt v\u00e0 d\u1ecbch v\u1ee5 h\u1eadu m\u00e3i c\u1ee7a nh\u00e0 cung c\u1ea5p l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i. C\u1ea7n \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng m\u1ea1ng, t\u00ednh ho\u00e0n ch\u1ec9nh c\u1ee7a h\u1ec7 sinh th\u00e1i s\u1ea3n ph\u1ea9m \u0111\u00e1m m\u00e2y (cloud products), c\u0169ng nh\u01b0 c\u00e1c cam k\u1ebft theo SLA (Service Level Agreement \u2013 Th\u1ecfa thu\u1eadn C\u1ea5p \u0111\u1ed9 D\u1ecbch v\u1ee5).<\/p>\n\n\n\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn khu v\u1ef1c \u0111\u1eb7t trung t\u00e2m d\u1eef li\u1ec7u c\u0169ng r\u1ea5t quan tr\u1ecdng. V\u1ec1 nguy\u00ean t\u1eafc, b\u1ea1n n\u00ean ch\u1ecdn khu v\u1ef1c g\u1ea7n nh\u1ea5t v\u1edbi nh\u00f3m ng\u01b0\u1eddi d\u00f9ng m\u1ee5c ti\u00eau c\u1ee7a m\u00ecnh \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u0111\u1ed9 tr\u1ec5 m\u1ea1ng v\u00e0 n\u00e2ng cao t\u1ed1c \u0111\u1ed9 truy c\u1eadp. \u0110\u1ed3ng th\u1eddi, b\u1ea1n c\u1ea7n xem x\u00e9t \u0111\u1ebfn c\u00e1c quy \u0111\u1ecbnh ph\u00e1p lu\u1eadt \u0111\u1ecba ph\u01b0\u01a1ng v\u00e0 y\u00eau c\u1ea7u v\u1ec1 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh v\u1ec1 d\u1eef li\u1ec7u.<\/p>\n

\u0110\u1ecdc th\u00eam Chi ti\u1ebft k\u1ef9 thu\u1eadt v\u1ec1 m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y: T\u1eeb kh\u00e1i ni\u1ec7m \u0111\u1ebfn l\u1ef1a ch\u1ecdn, h\u01b0\u1edbng d\u1eabn nhanh \u0111\u1ec3 thi\u1ebft l\u1eadp m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y c\u1ea5p doanh nghi\u1ec7p<\/a>\u3002<\/p>\n\n\n\n\n

C\u00e1c b\u01b0\u1edbc chi ti\u1ebft v\u00e0 th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ec3 c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 cloud<\/h2>\n\n\n\n

Sau khi mua th\u00e0nh c\u00f4ng m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y, vi\u1ec7c c\u1ea5u h\u00ecnh ban \u0111\u1ea7u m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd l\u00e0 n\u1ec1n t\u1ea3ng quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an ninh v\u00e0 hi\u1ec7u su\u1ea5t. Tu\u00e2n theo c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t v\u1ec1 an ninh khi th\u1ef1c hi\u1ec7n c\u00e1c thi\u1ebft l\u1eadp ban \u0111\u1ea7u c\u00f3 th\u1ec3 gi\u00fap tr\u00e1nh \u0111\u01b0\u1ee3c nhi\u1ec1u r\u1ee7i ro ti\u1ec1m \u1ea9n trong qu\u00e1 tr\u00ecnh s\u1eed d<\/p>\n\n\n\n

Kh\u1edfi t\u1ea1o h\u1ec7 th\u1ed1ng v\u00e0 t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt<\/h3>\n\n\n\n

Sau khi \u0111\u0103ng nh\u1eadp l\u1ea7n \u0111\u1ea7u v\u00e0o m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y, c\u1ea7n th\u1ef1c hi\u1ec7n ngay c\u00e1c thao t\u00e1c sau: thay \u0111\u1ed5i m\u1eadt kh\u1ea9u root m\u1eb7c \u0111\u1ecbnh th\u00e0nh m\u1ed9t m\u1eadt kh\u1ea9u m\u1ea1nh; t\u1ea1o m\u1ed9t ng\u01b0\u1eddi d\u00f9ng th\u00f4ng th\u01b0\u1eddng c\u00f3 quy\u1ec1n sudo \u0111\u1ec3 s\u1eed d\u1ee5ng cho vi\u1ec7c v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec h\u00e0ng ng\u00e0y, tr\u00e1nh s\u1eed d\u1ee5ng tr\u1ef1c ti\u1ebfp t\u00e0i kho\u1ea3n root; 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 kh\u1eafc ph\u1ee5c c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt \u0111\u00e3 bi\u1ebft.<\/p>\n\n\n\n

C\u00e1c b\u01b0\u1edbc quan tr\u1ecdng trong vi\u1ec7c t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt bao g\u1ed3m: c\u1ea5u h\u00ecnh c\u1eb7p kh\u00f3a SSH \u0111\u1ec3 th\u1ef1c hi\u1ec7n vi\u1ec7c \u0111\u0103ng nh\u1eadp, v\u00e0 v\u00f4 hi\u1ec7u h\u00f3a ch\u1ee9c n\u0103ng \u0111\u0103ng nh\u1eadp b\u1eb1ng m\u1eadt kh\u1ea9u \u2013 \u0111i\u1ec1u n\u00e0y gi\u00fap n\u00e2ng cao \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u1ea1i c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng b\u1eb1ng ph\u01b0\u01a1ng th\u1ee9c brute-force; \u0111i\u1ec1u ch\u1ec9nh c\u1ed5ng m\u1eb7c \u0111\u1ecbnh c\u1ee7a SSH (v\u00ed d\u1ee5: thay \u0111\u1ed5i t\u1eeb c\u1ed5ng 22 sang m\u1ed9t c\u1ed5ng kh\u00e1c); thi\u1ebft l\u1eadp quy t\u1eafc t\u01b0\u1eddng l\u1eeda (s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 iptables ho\u1eb7c firewalld) \u0111\u1ec3 ch\u1ec9 cho ph\u00e9p c\u00e1c c\u1ed5ng d\u1ecbch v\u1ee5 c\u1ea7n thi\u1ebft (nh\u01b0 80, 443, 22) \u0111\u01b0\u1ee3c truy c\u1eadp; \u0111\u1ed3ng th\u1eddi \u00e1p d\u1ee5ng danh s\u00e1ch tr\u1eafng (IP whitelist) \u0111\u1ed1i v\u1edbi c\u00e1c c\u1ed5ng qu\u1ea3n tr\u1ecb.<\/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\r\n\t\t\t
\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"SurferCloud\r\n\t\t\t\t\t\t\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\tSurferCloud <\/strong>\r\n\t\t\t\t\t\t\t\t\t\t
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Gi\u1ea3m gi\u00e1 40% cho Ng\u00e0y Th\u1ee9 S\u00e1u \u0110en<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp SurferCloud \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\"\u0110\u00e1m\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
\r\n\t\t\t\t
\r\n\t\t\t\t\t\u0110\u00e1m m\u00e2y Cloudways <\/strong>\r\n\t\t\t\t\t\t\t\t\t\t
\r\n\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t \r\n\t\t\t
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D\u00f9ng th\u1eed mi\u1ec5n ph\u00ed trong 3 ng\u00e0y<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\tTruy c\u1eadp Cloudways \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

T\u1ed1i \u01b0u h\u00f3a ph\u00e2n v\u00f9ng v\u00e0 g\u1eafn \u1ed5 \u0111\u0129a<\/h3>\n\n\n\n

\u0110\u1ed1i v\u1edbi \u1ed5 \u0111\u0129a h\u1ec7 th\u1ed1ng v\u00e0 \u1ed5 \u0111\u0129a d\u1eef li\u1ec7u, vi\u1ec7c t\u00e1ch ch\u00fang ra kh\u1ecfi nhau l\u00e0 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb. \u1ed4 \u0111\u0129a h\u1ec7 th\u1ed1ng th\u01b0\u1eddng ch\u1ec9 ch\u1ee9a h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng, trong khi \u1ed5 \u0111\u0129a d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u nghi\u1ec7p v\u1ee5, nh\u1eadt k\u00fd v\u00e0 t\u1ec7p c\u01a1 s\u1edf d\u1eef li\u1ec7u. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea3o to\u00e0n d\u1eef li\u1ec7u quan tr\u1ecdng trong tr\u01b0\u1eddng h\u1ee3p h\u1ec7 th\u1ed1ng c\u1ea7n \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp l\u1ea1i ho\u1eb7c<\/p>\n\n\n\n

H\u00e3y ch\u1ecdn h\u1ec7 th\u1ed1ng t\u1eadp tin ph\u00f9 h\u1ee3p d\u1ef1a tr\u00ean \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a d\u1eef li\u1ec7u. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng th\u00f4ng th\u01b0\u1eddng, ext4 l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn t\u1ed1t; n\u1ebfu b\u1ea1n c\u1ea7n t\u1ed1c \u0111\u1ed9 thao t\u00e1c v\u1edbi t\u1eadp tin cao h\u01a1n v\u00e0 ch\u1ee9c n\u0103ng t\u1ea1o b\u1ea3n sao l\u01b0u (snapshot), b\u1ea1n c\u00f3 th\u1ec3 xem x\u00e9t s\u1eed d\u1ee5ng XFS. Khi th\u1ef1c hi\u1ec7n vi\u1ec7c g\u1eafn (mount) h\u1ec7 th\u1ed1ng t\u1eadp tin, b\u1ea1n\/etc\/fstab<\/code>trong t\u1ec7pnoatime<\/code>\u548cnodiratime<\/code>Gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng thao t\u00e1c ghi d\u1eef li\u1ec7u l\u00ean \u0111\u0129a, t\u1eeb \u0111\u00f3 n\u00e2ng cao hi\u1ec7u su\u1ea5t I\/O (thao t\u00e1c \u0111\u1ecdc\/ghi d\u1eef li\u1ec7u).<\/p>\n\n\n\n

Tri\u1ec3n khai m\u00f4i tr\u01b0\u1eddng ph\u1ea7n m\u1ec1m c\u01a1 b\u1ea3n<\/h3>\n\n\n\n

T\u00f9y theo y\u00eau c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng, h\u00e3y c\u00e0i \u0111\u1eb7t v\u00e0 c\u1ea5u h\u00ecnh m\u00f4i tr\u01b0\u1eddng ch\u1ea1y ph\u00f9 h\u1ee3p. V\u00ed d\u1ee5, \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng web, c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i c\u00e0i \u0111\u1eb7t c\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 Nginx\/Apache, PHP\/Python\/Node.js, MySQL\/PostgreSQL, v.v. \u0110\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 container nh\u01b0 Docker \u0111\u1ec3 tri\u1ec3n khai \u1ee9ng d\u1ee5ng, v\u00ec ch\u00fang c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a m\u00f4i tr\u01b0\u1eddng, \u0111\u1ed3ng th\u1eddi gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh tri\u1ec3n khai v\u00e0 di chuy\u1ec3n \u1ee9ng d\u1ee5ng.<\/p>\n

\u0110\u1ecdc th\u00eam H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y: T\u1eeb \u01b0u \u0111i\u1ec3m hi\u1ec7u su\u1ea5t \u0111\u1ebfn tri\u1ec3n khai l\u1ef1a ch\u1ecdn<\/a>\u3002<\/p>\n\n\n\n\n

\u0110\u1ed3ng th\u1eddi, h\u00e3y c\u1ea5u h\u00ecnh c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t c\u1ea7n thi\u1ebft (ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c ti\u1ec7n \u00edch gi\u00e1m s\u00e1t \u0111\u00e1m m\u00e2y do nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 cung c\u1ea5p, ho\u1eb7c Prometheus Node Exporter) \u0111\u1ec3 thu th\u1eadp c\u00e1c ch\u1ec9 s\u1ed1 h\u1ec7 th\u1ed1ng sau n\u00e0y.<\/p>\n\n\n\n

Gi\u00e1m s\u00e1t hi\u1ec7u n\u0103ng, t\u1ed1i \u01b0u h\u00f3a v\u00e0 qu\u1ea3n l\u00fd chi ph\u00ed<\/h2>\n\n\n\n

Sau khi m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y \u0111\u01b0\u1ee3c tri\u1ec3n khai, vi\u1ec7c gi\u00e1m s\u00e1t v\u00e0 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t m\u1ed9t c\u00e1ch li\u00ean t\u1ee5c l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5 v\u00e0 ki\u1ec3m so\u00e1t chi ph\u00ed. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p d\u1ef1a tr\u00ean d\u1eef li\u1ec7u, c\u00f3 th\u1ec3 n\u00e2ng cao m\u1ee9c \u0111\u1ed9 t\u1eadn d\u1ee5ng t\u00e0i nguy\u00ean<\/p>\n\n\n

\n\n
\n VPS \u0111\u00e1m m\u00e2y HostArmada<\/strong>\n
\u1ed4 SSD\/NVMe \u0111\u00e1m m\u00e2y + t\u0103ng t\u1ed1c b\u1ed9 nh\u1edb \u0111\u1ec7m nhi\u1ec1u l\u1edbp, gi\u1ea3m gi\u00e1 50% cho kho\u1ea3n thanh to\u00e1n h\u00e0ng th\u00e1ng trong th\u1eddi gian \u0111\u0103ng k\u00fd l\u1ea7n \u0111\u1ea7u, h\u1ed7 tr\u1ee3 24\/7\/365 v\u00e0 truy c\u1eadp ROOT ho\u00e0n to\u00e0n.<\/div>\n <\/div>\n\n
\n \n \n \"Logo\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

X\u00e2y d\u1ef1ng m\u1ed9t h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t to\u00e0n di\u1ec7n<\/h3>\n\n\n\n

Gi\u00e1m s\u00e1t n\u00ean bao ph\u1ee7 nhi\u1ec1u c\u1ea5p \u0111\u1ed9: t\u1ea7ng t\u00e0i nguy\u00ean c\u01a1 b\u1ea3n (t\u1ef7 l\u1ec7 s\u1eed d\u1ee5ng CPU, t\u1ef7 l\u1ec7 s\u1eed d\u1ee5ng b\u1ed9 nh\u1edb, IOPS v\u00e0 dung l\u01b0\u1ee3ng \u1ed5 \u0111\u0129a, b\u0103ng th\u00f4ng m\u1ea1ng v\u00e0 s\u1ed1 l\u01b0\u1ee3ng k\u1ebft n\u1ed1i); t\u1ea7ng d\u1ecbch v\u1ee5 \u1ee9ng d\u1ee5ng (th\u1eddi gian ph\u1ea3n h\u1ed3i c\u1ee7a m\u00e1y ch\u1ee7 web, t\u1ed1c \u0111\u1ed9 truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u, tr\u1ea1ng th\u00e1i ti\u1ebfn tr\u00ecnh \u1ee9ng d\u1ee5ng); c\u1ea5p \u0111\u1ed9 nghi\u1ec7p v\u1ee5 (l\u01b0\u1ee3ng truy c\u1eadp website, t\u1ef7 l\u1ec7 th\u00e0nh c\u00f4ng c\u1ee7a l\u1ec7nh g\u1ecdi API).<\/p>\n\n\n\n

Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 gi\u00e1m s\u00e1t \u0111\u00e1m m\u00e2y do nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y cung c\u1ea5p c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n th\u1ef1c hi\u1ec7n c\u00f4ng t\u00e1c gi\u00e1m s\u00e1t c\u01a1 b\u1ea3n m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng. \u0110\u1ed1i v\u1edbi nh\u1eefng y\u00eau c\u1ea7u ph\u1ee9c t\u1ea1p h\u01a1n, b\u1ea1n c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t d\u1ef1a tr\u00ean c\u00e1c c\u00f4ng c\u1ee5 m\u00e3 ngu\u1ed3n m\u1edf nh\u01b0 Prometheus (d\u00f9ng \u0111\u1ec3 thu th\u1eadp d\u1eef li\u1ec7u ch\u1ec9 s\u1ed1), Grafana (d\u00f9ng \u0111\u1ec3 tr\u1ef1c quan h\u00f3a d\u1eef li\u1ec7u), v\u00e0 Alertmanager (d\u00f9ng \u0111\u1ec3 qu\u1ea3n l\u00fd c\u1ea3nh b\u00e1o). H\u00e3y thi\u1ebft l\u1eadp c\u00e1c ng\u01b0\u1ee1ng c\u1ea3nh b\u00e1o h\u1ee3p l\u00fd (v\u00ed d\u1ee5: CPU li\u00ean t\u1ee5c v\u01b0\u1ee3t qu\u00e1 m\u1ee9c 80% trong v\u00f2ng 5 ph\u00fat) \u0111\u1ec3 c\u00f3 th\u1ec3 ph\u1ea3n \u1ee9ng k\u1ecbp th\u1eddi khi xu\u1ea5t hi\u1ec7n s\u1ef1 c\u1ed1.<\/p>\n\n\n\n

C\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u n\u0103ng th\u01b0\u1eddng g\u1eb7p v\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u h\u00f3a<\/h3>\n\n\n\n

N\u00fat c\u1ed5 chai CPU: n\u1ebfu t\u1ef7 l\u1ec7 s\u1eed d\u1ee5ng CPU li\u00ean t\u1ee5c qu\u00e1 cao, c\u00f3 th\u1ec3 th\u00f4ng quatop<\/code>\u6216htop<\/code>L\u1ec7nh n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c ti\u1ebfn tr\u00ecnh \u0111ang ti\u00eau t\u1ed1n nhi\u1ec1u t\u00e0i nguy\u00ean h\u1ec7 th\u1ed1ng. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1i \u01b0u h\u00f3a bao g\u1ed3m: vi\u1ec7c c\u1ea3i thi\u1ec7n m\u00e3 ngu\u1ed3n \u1ee9ng d\u1ee5ng, n\u00e2ng c\u1ea5p CPU c\u00f3 c\u1ea5u h\u00ecnh cao h\u01a1n, ho\u1eb7c ph\u00e2n b\u1ed5 t\u1ea3i c\u00f4ng vi\u1ec7c l\u00ean nhi\u1ec1u m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y<\/p>\n\n\n\n

N\u00fat c\u1ed5 chai b\u1ed9 nh\u1edb: khi b\u1ed9 nh\u1edb kh\u00f4ng \u0111\u1ee7, h\u1ec7 th\u1ed1ng s\u1ebd s\u1eed d\u1ee5ng kh\u00f4ng gian Swap, d\u1eabn \u0111\u1ebfn hi\u1ec7u su\u1ea5t gi\u1ea3m m\u1ea1nh. C\u00f3 th\u1ec3 th\u00f4ng qua t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng b\u1ed9 nh\u1edb c\u1ee7a \u1ee9ng d\u1ee5ng, t\u0103ng dung l\u01b0\u1ee3ng b\u1ed9 nh\u1edb ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh c\u00e1c tham s\u1ed1 nh\u00e2n h\u1ec7 th\u1ed1ng (v\u00ed d\u1ee5 nh\u01b0vm.swappiness<\/code>\uff09\u0111\u1ec3 gi\u1ea3m b\u1edbt t\u00ecnh tr\u1ea1ng n\u00e0y.<\/p>\n\n\n\n

N\u00fat c\u1ed5 chai I\/O \u1ed5 \u0111\u0129a: S\u1eed d\u1ee5ngiostat<\/code>C\u00e1c l\u1ec7nh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ea9n \u0111o\u00e1n m\u1ee9c \u0111\u1ed9 \u00e1p l\u1ef1c \u0111\u1ecdc\/ghi tr\u00ean \u0111\u0129a. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1i \u01b0u h\u00f3a bao g\u1ed3m: n\u00e2ng c\u1ea5p l\u00ean \u0111\u0129a SSD c\u00f3 hi\u1ec7u su\u1ea5t cao h\u01a1n, s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 RAID 0 \u0111\u1ec3 t\u0103ng t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd I\/O (nh\u01b0ng c\u1ea7n l\u01b0u \u00fd \u0111\u1ebfn r\u1ee7i ro v\u1ec1 \u0111\u1ed9 tin c\u1eady d\u1eef li\u1ec7u), ho\u1eb7c chuy\u1ec3n c\u00e1c thao t\u00e1c \u0111\u1ecdc\/ghi th\u01b0\u1eddng xuy\u00ean (ch\u1eb3ng h\u1ea1n nh\u01b0 vi\u1ec7c l\u01b0u tr\u1eef nh\u1eadt k\u00fd) sang \u0111\u0129a c\u00f3 hi\u1ec7u<\/p>\n\n\n\n

N\u00fat c\u1ed5 chai m\u1ea1ng: Th\u00f4ng quasar<\/code>\u6216iftop<\/code>Theo d\u00f5i l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng. N\u1ebfu b\u0103ng th\u00f4ng kh\u00f4ng \u0111\u1ee7, b\u1ea1n c\u00f3 th\u1ec3 n\u00e2ng c\u1ea5p b\u0103ng th\u00f4ng; n\u1ebfu g\u1eb7p t\u00ecnh tr\u1ea1ng tr\u1ec5 ho\u1eb7c m\u1ea5t g\u00f3i d\u1eef li\u1ec7u, h\u00e3y ki\u1ec3m tra \u0111\u01b0\u1eddng truy\u1ec1n ho\u1eb7c xem x\u00e9t s\u1eed d\u1ee5ng c\u00e1c d\u1ecbch v\u1ee5 t\u0103ng t\u1ed1c to\u00e0n c\u1ea7u.<\/p>\n\n\n\n

Chi\u1ebfn l\u01b0\u1ee3c ki\u1ec3m so\u00e1t chi ph\u00ed chi ti\u1ebft<\/h3>\n\n\n\n

Vi\u1ec7c ki\u1ec3m so\u00e1t chi ph\u00ed b\u1eaft \u0111\u1ea7u t\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c t\u00ednh ph\u00ed ph\u00f9 h\u1ee3p. \u0110\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong th\u1eddi gian d\u00e0i, vi\u1ec7c thanh to\u00e1n theo g\u00f3i h\u00e0ng th\u00e1ng s\u1ebd ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n; c\u00f2n \u0111\u1ed1i v\u1edbi c\u00e1c doanh nghi\u1ec7p c\u00f3 ho\u1ea1t \u0111\u1ed9ng ng\u1eafn h\u1ea1n ho\u1eb7c c\u00f3 bi\u1ebfn \u0111\u1ed9ng l\u1edbn, vi\u1ec7c t\u00ednh ph\u00ed theo l\u01b0\u1ee3ng s\u1eed d\u1ee5ng s\u1ebd linh ho\u1ea1t h\u01a1n. H\u00e3y t\u1eadn d\u1ee5ng t\u1ed1i \u0111a t\u00ednh n\u0103ng m\u1edf r\u1ed9ng v\u00e0 thu h\u1eb9p t\u1ef1<\/p>\n\n\n\n

H\u00e3y th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra t\u00ecnh h\u00ecnh s\u1eed d\u1ee5ng c\u00e1c ngu\u1ed3n l\u1ef1c, v\u00e0 t\u1eaft ho\u1eb7c gi\u1ea3i ph\u00f3ng nh\u1eefng m\u00e1y ch\u1ee7 cloud (cloud host) v\u00e0 \u1ed5 \u0111\u0129a kh\u00f4ng c\u00f2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c phi\u1ebfu gi\u1ea3m gi\u00e1 d\u00e0nh cho instance ho\u1eb7c c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh ti\u1ebft ki\u1ec7m chi ph\u00ed, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 chi ph\u00ed v\u1eadn h\u00e0nh trong th\u1eddi gian d\u00e0i. H\u00e3y chuy\u1ec3n nh\u1eefng d\u1eef li\u1ec7u kh\u00f4ng quan tr\u1ecdng sang c\u00e1c d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef \u0111\u1ed1i t\u01b0\u1ee3ng (object storage) ho\u1eb7c<\/p>\n\n\n\n

Thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac cao s\u1eb5n s\u00e0ng ho\u1ea1t \u0111\u1ed9ng v\u00e0 ph\u1ee5c h\u1ed3i sau th\u1ea3m h\u1ecda<\/h2>\n\n\n\n

\u0110\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t, m\u1ed9t m\u00e1y ch\u1ee7 cloud \u0111\u01a1n l\u1ebb c\u00f3 nguy c\u01a1 g\u1eb7p s\u1ef1 c\u1ed1 (single point of failure). Vi\u1ec7c thi\u1ebft k\u1ebf c\u00e1c c\u1ea5u tr\u00fac h\u1ec7 th\u1ed1ng c\u00f3 \u0111\u1ed9 s\u1eb5n s\u00e0ng cao (high availability) v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i sau th\u1ea3m h\u1ecda (disaster recovery) l\u00e0 bi\u1ec7n ph\u00e1p c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh li\u00ean t\u1ee5c ho\u1ea1t \u0111\u1ed9ng<\/p>\n\n\n\n

Th\u1ef1c hi\u1ec7n c\u00f4ng ngh\u1ec7 ph\u00e2n b\u1ed5 t\u1ea3i (load balancing) v\u00e0 m\u1edf r\u1ed9ng theo chi\u1ec1u ngang (horizontal scaling)<\/h3>\n\n\n\n

B\u1eb1ng c\u00e1ch tri\u1ec3n khai b\u1ed9 ph\u00e2n ph\u1ed1i t\u1ea3i (load balancer), l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp s\u1ebd \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 \u0111\u1ebfn nhi\u1ec1u m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y \u1edf ph\u00eda sau. \u0110i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 gi\u00fap n\u00e2ng cao kh\u1ea3 n\u0103ng x\u1eed l\u00fd v\u00e0 t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u c\u1ee7a h\u1ec7 th\u1ed1ng m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1ecbch v\u1ee5 v\u1eabn \u0111\u01b0\u1ee3c cung c\u1ea5p li\u00ean t\u1ee5c ngay c\u1ea3 khi m\u1ed9t m\u00e1y ch\u1ee7 g\u1eb7p s\u1ef1 c\u1ed1; c\u00e1c m\u00e1y ch\u1ee7 kh\u00e1c v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng<\/p>\n\n\n\n

K\u1ebft h\u1ee3p v\u1edbi nh\u00f3m auto-scaling (t\u1ef1 \u0111\u1ed9ng m\u1edf r\u1ed9ng\/ch\u1ec9nh s\u1eeda quy m\u00f4), b\u1ea1n c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp c\u00e1c quy t\u1eafc \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng t\u0103ng ho\u1eb7c gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y d\u1ef1a tr\u00ean c\u00e1c ch\u1ec9 s\u1ed1 nh\u01b0 t\u1ef7 l\u1ec7 s\u1eed d\u1ee5ng CPU ho\u1eb7c l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng, t\u1eeb \u0111\u00f3 th\u1ef1c hi\u1ec7n vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a chi ph\u00ed m\u1ed9t c<\/p>\n\n\n\n

D\u1ef1 ph\u00f2ng d\u1eef li\u1ec7u v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i sau th\u1ea3m h\u1ecda \u1edf nhi\u1ec1u khu v\u1ef1c \u0111\u1ecba l\u00fd kh\u00e1c nhau<\/h3>\n\n\n\n

B\u1ea5t k\u1ef3 ki\u1ebfn tr\u00fac c\u00f3 \u0111\u1ed9 s\u1eb5n s\u00e0ng cao n\u00e0o c\u0169ng kh\u00f4ng th\u1ec3 thi\u1ebfu vi\u1ec7c sao l\u01b0u d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady. C\u1ea7n ph\u1ea3i x\u00e2y d\u1ef1ng v\u00e0 th\u1ef1c hi\u1ec7n nghi\u00eam ng\u1eb7t c\u00e1c chi\u1ebfn l\u01b0\u1ee3c sao l\u01b0u d\u1eef li\u1ec7u, bao g\u1ed3m t\u1ea7n su\u1ea5t sao l\u01b0u (ch\u1eb3ng h\u1ea1n sao l\u01b0u to\u00e0n b\u1ed9 d\u1eef li\u1ec7u h\u00e0ng ng\u00e0y, sao l\u01b0u t\u0103ng d\u1ea7n h\u00e0ng gi\u1edd), th\u1eddi gian l\u01b0u tr\u1eef d\u1eef li\u1ec7u sao l\u01b0u<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c ho\u1ea1t \u0111\u1ed9ng kinh doanh c\u1ed1t l\u00f5i, c\u1ea7n xem x\u00e9t vi\u1ec7c tri\u1ec3n khai c\u00e1c gi\u1ea3i ph\u00e1p ph\u00f2ng th\u1ee7 th\u1ea3m h\u1ecda (disaster recovery) tr\u00ean nhi\u1ec1u khu v\u1ef1c s\u1eb5n c\u00f3 (availability zones \u2013 AZ) ho\u1eb7c th\u1eadm ch\u00ed \u1edf nhi\u1ec1u v\u00f9ng \u0111\u1ecba l\u00fd kh\u00e1c nhau. Vi\u1ec7c tri\u1ec3n khai \u1ee9ng d\u1ee5ng tr\u00ean c\u00e1c AZ kh\u00e1c nhau trong c\u00f9ng m\u1ed9t v\u00f9ng \u0111\u1ecba l\u00fd c\u00f3 th\u1ec3 gi\u00fap ng\u0103n ch\u1eb7n c\u00e1c s\u1ef1 c\u1ed1 x\u1ea3y ra \u1edf c\u1ea5p \u0111\u1ed9 trung t\u00e2m d\u1eef li\u1ec7u. \u0110\u1ed1i v\u1edbi nh\u1eefng y\u00eau c\u1ea7u cao h\u01a1n, c\u00f3 th\u1ec3 thi\u1ebft l\u1eadp m\u1ed9t trung t\u00e2m d\u1ef1 ph\u00f2ng \u1edf m\u1ed9t v\u00f9ng \u0111\u1ecba l\u00fd kh\u00e1c, v\u00e0 th\u1ef1c hi\u1ec7n vi\u1ec7c \u0111\u1ed3ng b<\/p>\n\n\n\n

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

Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00e0 c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p, \u0111\u00f2i h\u1ecfi ph\u1ea3i xu\u1ea5t ph\u00e1t t\u1eeb nhu c\u1ea7u kinh doanh c\u1ee5 th\u1ec3, \u0111\u1ed3ng th\u1eddi xem x\u00e9t \u0111\u1ea7y \u0111\u1ee7 nhi\u1ec1u y\u1ebfu t\u1ed1 nh\u01b0 hi\u1ec7u n\u0103ng, chi ph\u00ed, b\u1ea3o m\u1eadt v\u00e0 kh\u1ea3 n\u0103ng s\u1eb5n s\u00e0ng cao. M\u1ed9t qu\u00e1 tr\u00ecnh tri\u1ec3n khai th\u00e0nh c\u00f4ng b\u1eaft \u0111\u1ea7u v\u1edbi ph\u00e2n t\u00edch r\u00f5 r\u00e0ng v\u1ec1 c\u00e1c t\u00ecnh hu\u1ed1ng s\u1eed d\u1ee5ng, l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 m\u1ed9t c\u00e1ch th\u1eadn tr\u1ecdng, ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c duy tr\u00ec th\u00f4ng qua c\u00e1c b\u01b0\u1edbc kh\u1edfi t\u1ea1o b\u1ea3o m\u1eadt nghi\u00eam ng\u1eb7t v\u00e0 vi\u1ec7c gi\u00e1m s\u00e1t, t\u1ed1i \u01b0u h\u00f3a li\u00ean t\u1ee5c; cu\u1ed1i c\u00f9ng, thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng s\u1ebd \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh cho doanh nghi\u1ec7p. B\u1eb1ng c\u00e1ch n\u1eafm v\u1eefng nh\u1eefng k\u1ef9 n\u0103ng c\u1ed1t l\u00f5i n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a t\u00ednh linh ho\u1ea1t v\u00e0 s\u1ef1 m\u1ec1m d\u1ebbo c\u1ee7a c\u00f4ng ngh\u1ec7 \u0111\u00e1m m\u00e2y, x<\/p>\n\n\n\n

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

M\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y v\u00e0 m\u00e1y ch\u1ee7 \u1ea3o c\u00f3 g\u00ec kh\u00e1c nhau?<\/h3>\n\n\n\n

M\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y (Cloud Server) l\u00e0 nh\u1eefng instance t\u00ednh to\u00e1n \u0111\u1ed9c l\u1eadp, c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng linh ho\u1ea1t, \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb c\u00e1c c\u1ee5m m\u00e1y ch\u1ee7 v\u1eadt l\u00fd quy m\u00f4 l\u1edbn th\u00f4ng qua c\u00f4ng ngh\u1ec7 \u1ea3o h\u00f3a. Ch\u00fang s\u1edf h\u1eefu h\u1ec7 \u0111i\u1ec1u h\u00e0nh ri\u00eang, quy\u1ec1n truy c\u1eadp root \u0111\u1ea7y \u0111\u1ee7, ngu\u1ed3n l\u1ef1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u1ed9t c\u00e1ch \u0111\u1ed9c quy\u1ec1n ho\u1eb7c \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o theo t\u1ef7 l\u1ec7 c\u1ea7n thi\u1ebft, v\u00e0 c\u1ea5u h\u00ecnh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh b\u1ea5t c\u1ee9 l\u00fac n\u00e0o.<\/p>\n\n\n\n

VPS (M\u00e1y ch\u1ee7 \u1ea3o) th\u01b0\u1eddng l\u00e0 nhi\u1ec1u kh\u00f4ng gian web \u0111\u01b0\u1ee3c ph\u00e2n chia tr\u00ean m\u1ed9t m\u00e1y ch\u1ee7 th\u00f4ng qua ph\u1ea7n m\u1ec1m; ng\u01b0\u1eddi d\u00f9ng ch\u1ec9 c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd c\u00e1c t\u1ec7p tin c\u1ee7a trang web m\u00ecnh, chia s\u1ebb t\u00e0i nguy\u00ean nh\u01b0 CPU, b\u1ed9 nh\u1edb c\u1ee7a m\u00e1y ch\u1ee7, nh\u01b0ng kh\u00f4ng th\u1ec3 c\u00e0i \u0111\u1eb7t ph\u1ea7n m\u1ec1m t\u00f9y ch\u1ec9nh hay th\u1ef1c hi\u1ec7n c\u00e1c thi\u1ebft l\u1eadp \u1edf c\u1ea5p h\u1ec7 th\u1ed1ng. V\u1ec1 m\u1eb7t hi\u1ec7u n\u0103ng, t\u00ednh linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t, Cloud Server (M\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y) v\u01b0\u1ee3t tr\u1ed9i h\u01a1n nhi\u1ec1u so v\u1edbi VPS.<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u1ee9ng d\u1ee5ng c\u1ee7a t\u00f4i c\u1ea7n bao nhi\u00eau b\u0103ng th\u00f4ng?<\/h3>\n\n\n\n

M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u01b0\u1edbc l\u01b0\u1ee3ng s\u01a1 b\u1ed9 l\u00e0: B\u0103ng th\u00f4ng c\u1ea7n thi\u1ebft (Mbps) \u2248 S\u1ed1 l\u01b0\u1ee3ng ng\u01b0\u1eddi d\u00f9ng d\u1ef1 ki\u1ebfn truy c\u1eadp \u0111\u1ed3ng th\u1eddi \u00d7 K\u00edch th\u01b0\u1edbc trang trung b\u00ecnh m\u1ed7i ng\u01b0\u1eddi d\u00f9ng (MB) \u00d7 8 (chuy\u1ec3n \u0111\u1ed5i th\u00e0nh bit) \/ Th\u1eddi gian trung b\u00ecnh \u0111\u1ec3 t\u1ea3i trang (gi\u00e2y). V\u00ed d\u1ee5, n\u1ebfu d\u1ef1 ki\u1ebfn c\u00f3 1000 ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp \u0111\u1ed3ng th\u1eddi, k\u00edch th\u01b0\u1edbc trang trung b\u00ecnh l\u00e0 1MB, v\u00e0 mong mu\u1ed1n trang \u0111\u01b0\u1ee3c t\u1ea3i xong trong 3 gi\u00e2y, th\u00ec nhu c\u1ea7u v\u1ec1 b\u0103ng th\u00f4ng s\u1ebd l\u00e0 (1000 \u00d7 1 \u00d7 8) \/ 3 \u2248 2667 Mbps. R\u00f5 r\u00e0ng, \u0111i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi ph\u1ea3i s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 ph\u00e2n ph\u1ed1i t\u1ea3i (load balancing) \u0111\u1ec3 gi\u1ea3m \u00e1p l\u1ef1c l\u00ean h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

C\u00e1ch ti\u1ebfp c\u1eadn th\u1ef1c t\u1ebf h\u01a1n l\u00e0 ch\u1ecdn g\u00f3i d\u1ecbch v\u1ee5 t\u00ednh ph\u00ed theo l\u01b0\u1ee3ng s\u1eed d\u1ee5ng ho\u1eb7c m\u1ed9t b\u0103ng th\u00f4ng th\u1ea5p h\u01a1n trong giai \u0111o\u1ea1n \u0111\u1ea7u, sau \u0111\u00f3 theo d\u00f5i c\u00e1c \u0111\u1ec9nh l\u01b0u l\u01b0\u1ee3ng th\u1ef1c t\u1ebf th\u00f4ng qua c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t \u0111\u00e1m m\u00e2y v\u00e0 \u0111i\u1ec1u ch\u1ec9nh c\u00e1c thi\u1ebft l\u1eadp d\u1ef1a tr\u00ean d\u1eef li\u1ec7u thu \u0111\u01b0\u1ee3c. \u0110\u1ed1i v\u1edbi l\u01b0\u1ee3ng l\u1edbn t\u00e0i nguy\u00ean t\u0129nh, r\u1ea5t khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef \u0111\u1ed1i t\u01b0\u1ee3ng (Object Storage) v\u00e0 CDN (Content Delivery Network) \u2013 \u0111i\u1ec1u n\u00e0y s\u1ebd gi\u00fap gi\u1ea3m \u0111\u00e1ng k<\/p>\n\n\n\n

Vi\u1ec7c t\u00e1ch bi\u1ec7t \u1ed5 \u0111\u0129a h\u1ec7 th\u1ed1ng (system disk) v\u00e0 \u1ed5 \u0111\u0129a d\u1eef li\u1ec7u (data disk) mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch sau:<\/h3>\n\n\n\n

Vi\u1ec7c t\u00e1ch bi\u1ec7t \u1ed5 \u0111\u0129a h\u1ec7 th\u1ed1ng (system disk) v\u00e0 \u1ed5 \u0111\u0129a d\u1eef li\u1ec7u (data disk) l\u00e0 m\u1ed9t th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec h\u1ec7 th\u1ed1ng (ops and maintenance). L\u1ee3i \u00edch ch\u00ednh c\u1ee7a vi\u1ec7c n\u00e0y n\u1eb1m \u1edf kh\u00eda c\u1ea1nh b\u1ea3o m\u1eadt v\u00e0 t\u00ednh linh ho\u1ea1t: khi h\u1ec7 th\u1ed1ng g\u1eb7p s\u1ef1 c\u1ed1 v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t l\u1ea1i ho\u1eb7c thay th\u1ebf b\u1eb1ng phi\u00ean b\u1ea3n m\u1edbi, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 thao t\u00e1c tr\u1ef1c ti\u1ebfp v\u1edbi \u1ed5 \u0111\u0129a h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn d\u1eef li\u1ec7u kinh doanh, c\u01a1 s\u1edf<\/p>\n\n\n\n

Ngo\u00e0i ra, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn lo\u1ea1i \u1ed5 \u0111\u0129a kh\u00e1c v\u1edbi \u1ed5 \u0111\u0129a h\u1ec7 th\u1ed1ng (ch\u1eb3ng h\u1ea1n nh\u01b0 \u1ed5 \u0111\u0129a ESSD c\u00f3 hi\u1ec7u n\u0103ng cao h\u01a1n) cho \u1ed5 \u0111\u0129a d\u1eef li\u1ec7u, v\u00e0 th\u1ef1c hi\u1ec7n vi\u1ec7c sao l\u01b0u d\u1eef li\u1ec7u d\u01b0\u1edbi d\u1ea1ng b\u1ea3n sao l\u01b0u (snapshot) c\u0169ng nh\u01b0 m\u1edf r\u1ed9ng dung l\u01b0\u1ee3ng m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n qu\u1ea3n l\u00fd d\u1eef<\/p>\n\n\n\n

N\u1ebfu b\u1ea1n ph\u00e1t hi\u1ec7n m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y c\u1ee7a m\u00ecnh b\u1ecb t\u1ea5n c\u00f4ng ho\u1eb7c x\u00e2m nh\u1eadp, h\u00e3y th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau:<\/h3>\n\n\n\n

Tr\u01b0\u1edbc h\u1ebft, h\u00e3y ngay l\u1eadp t\u1ee9c c\u00f4 l\u1eadp m\u00e1y ch\u1ee7 b\u1ecb l\u1ed7i: N\u1ebfu b\u1ea1n \u0111\u00e3 m\u1ea5t quy\u1ec1n ki\u1ec3m so\u00e1t, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng giao di\u1ec7n \u0111i\u1ec1u khi\u1ec3n t\u1eeb xa \u0111\u1ec3 t\u1eaft m\u00e1y ch\u1ee7 ho\u1eb7c ng\u1eaft k\u1ebft n\u1ed1i m\u1ea1ng, nh\u1eb1m ng\u0103n ch\u1eb7n s\u1ef1 l\u00e2y lan c\u1ee7a cu\u1ed9c t\u1ea5n c\u00f4ng. Sau \u0111\u00f3, h\u00e3y s\u1eed d\u1ee5ng b\u1ea3n sao l\u01b0u \u0111\u1ec3 kh\u00f4i ph\u1ee5c d\u1ecbch v\u1ee5: Tr\u00ean m\u1ed9t m\u00e1y ch\u1ee7 kh\u00e1c an to\u00e0n, h\u00e3y kh\u00f4i ph\u1ee5c d\u1ecbch v\u1ee5 m\u1ed9t c\u00e1ch nhanh ch\u00f3ng b\u1eb1ng b\u1ea3n sao l\u01b0u g\u1ea7n nh\u1ea5t v\u00e0 c\u00f2n nguy\u00ean v\u1eb9n, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o<\/p>\n\n\n\n

Ph\u00e2n t\u00edch v\u00e0 c\u1ee7ng c\u1ed1 sau s\u1ef1 c\u1ed1: Th\u00f4ng qua nh\u1eadt k\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u0111\u00e1m m\u00e2y, nh\u1eadt k\u00fd h\u1ec7 th\u1ed1ng (v\u00ed d\u1ee5:\/var\/log\/secure<\/code>B\u1ea1n n\u00ean ti\u1ebfn h\u00e0nh ph\u00e2n t\u00edch ngu\u1ed3n g\u1ed1c c\u1ee7a v\u1ee5 x\u00e2m nh\u1eadp (nh\u01b0 vi\u1ec7c s\u1eed d\u1ee5ng m\u1eadt kh\u1ea9u y\u1ebfu, c\u00e1c l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt) \u0111\u1ec3 t\u00ecm ra con \u0111\u01b0\u1eddng x\u00e2m nh\u1eadp. Sau khi \u0111\u00e3 kh\u1eafc ph\u1ee5c tri\u1ec7t \u0111\u1ec3 c\u00e1c l\u1ed7 h\u1ed5ng \u0111\u00f3, h\u00e3y xem x\u00e9t c\u00f3 n\u00ean b\u1eadt l\u1ea1i m\u00e1y ch\u1ee7 g\u1ed1c hay kh\u00f4ng. \u0110\u1eebng qu\u00ean t\u0103ng c\u01b0\u1eddng c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u1ea5u h\u00ecnh \u0111\u1ea7y \u0111\u1ee7 c\u00e1c quy t\u1eafc c\u1ee7a nh\u00f3m b\u1ea3o m\u1eadt, c\u00e0i \u0111\u1eb7t h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n x\u00e2m nh\u1eadp (nh\u01b0 Fail2ban), v.v.<\/p>","protected":false},"excerpt":{"rendered":"

B\u00e0i vi\u1ebft n\u00e0y tr\u00ecnh b\u00e0y m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng quy tr\u00ecnh c\u1ed1t l\u00f5i t\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u1ebfn c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 \u0111\u00e1m m\u00e2y. \u0110\u1ea7u ti\u00ean, b\u00e0i vi\u1ebft h\u01b0\u1edbng d\u1eabn c\u00e1ch l\u1ef1a ch\u1ecdn c\u1ea5u h\u00ecnh v\u1ec1 t\u00ednh to\u00e1n, b\u1ed9 nh\u1edb, l\u01b0u tr\u1eef v\u00e0 b\u0103ng th\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3, \u0111\u1ed3ng th\u1eddi \u0111\u1ec1 xu\u1ea5t c\u00e1c nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u00e1ng tin c\u1eady. Ti\u1ebfp theo, b\u00e0i vi\u1ebft gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 c\u00e1c th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t nh\u01b0 kh\u1edfi t\u1ea1o h\u1ec7 th\u1ed1ng, t\u0103ng c\u01b0\u1eddng b\u1ea3o m\u1eadt v\u00e0 t\u1ed1i \u01b0u h\u00f3a \u1ed5 \u0111\u0129a. Cu\u1ed1i c\u00f9ng, b\u00e0i vi\u1ebft nh\u1ea5n m\u1ea1<\/p>","protected":false},"author":7,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[39,295,1993,288,301],"knowledge_category":[274],"class_list":["post-12372786","knowledge_post","type-knowledge_post","status-publish","hentry","tag-cloud-hosting","tag-cloud-server-buying-guide","tag-cloud-service-guide","tag-cloud-computing","tag-server-configuration","knowledge_category-cloud-hosting"],"acf":{"site_seo_keywords":"\u4e91\u4e3b\u673a\u9009\u8d2d,\u4e91\u4e3b\u673a\u914d\u7f6e,\u670d\u52a1\u5668\u914d\u7f6e\u6307\u5357,\u4e91\u670d\u52a1\u5668\u6027\u80fd\u4f18\u5316,\u4e91\u4e3b\u673a\u5b89\u5168\u52a0\u56fa,\u4e91\u8ba1\u7b97\u5165\u95e8,\u4f01\u4e1a\u4e0a\u4e91\u6280\u5de7,\u4e91\u4e3b\u673a\u6210\u672c\u7ba1\u7406"},"_links":{"self":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12372786","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":1,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12372786\/revisions"}],"predecessor-version":[{"id":12406117,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_posts\/12372786\/revisions\/12406117"}],"wp:attachment":[{"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/media?parent=12372786"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/tags?post=12372786"},{"taxonomy":"knowledge_category","embeddable":true,"href":"https:\/\/www.likacloud.com\/vi\/wp-json\/wp\/v2\/knowledge_category?post=12372786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}