{"id":479525,"date":"2023-08-09T10:41:31","date_gmt":"2023-08-09T10:41:31","guid":{"rendered":""},"modified":"2023-09-05T11:18:59","modified_gmt":"2023-09-05T11:18:59","slug":"virtual-machine-migration","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/virtual-machine-migration\/","title":{"rendered":"Di chuy\u1ec3n m\u00e1y \u1ea3o"},"content":{"rendered":"<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>Di chuy\u1ec3n m\u00e1y \u1ea3o l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n trong l\u0129nh v\u1ef1c \u0111i\u1ec7n to\u00e1n hi\u1ec7n \u0111\u1ea1i v\u00e0 c\u00f4ng ngh\u1ec7 \u0111\u00e1m m\u00e2y. N\u00f3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn qu\u00e1 tr\u00ecnh chuy\u1ec3n m\u1ed9t m\u00e1y \u1ea3o (VM) \u0111ang ch\u1ea1y t\u1eeb m\u00e1y ch\u1ee7 v\u1eadt l\u00fd n\u00e0y sang m\u00e1y ch\u1ee7 v\u1eadt l\u00fd kh\u00e1c m\u00e0 kh\u00f4ng g\u00e2y ra b\u1ea5t k\u1ef3 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 \u0111\u00e1ng k\u1ec3 n\u00e0o. Kh\u1ea3 n\u0103ng n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u, nh\u00e0 cung c\u1ea5p \u0111\u00e1m m\u00e2y v\u00e0 doanh nghi\u1ec7p \u0111ang t\u00ecm c\u00e1ch t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean, c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng. Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd \u0111i s\u00e2u v\u00e0o l\u1ecbch s\u1eed, ho\u1ea1t \u0111\u1ed9ng b\u00ean trong, c\u00e1c t\u00ednh n\u0103ng ch\u00ednh, lo\u1ea1i, c\u00e1ch s\u1eed d\u1ee5ng v\u00e0 tri\u1ec3n v\u1ecdng trong t\u01b0\u01a1ng lai c\u1ee7a vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o.<\/p>\n<h2>L\u1ecbch s\u1eed di chuy\u1ec3n m\u00e1y \u1ea3o<\/h2>\n<p>Ngu\u1ed3n g\u1ed1c c\u1ee7a vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb \u0111\u1ea7u nh\u1eefng n\u0103m 1960 khi IBM \u0111\u01b0a ra kh\u00e1i ni\u1ec7m \u1ea3o h\u00f3a c\u00f9ng v\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a h\u1ec7 th\u1ed1ng CP-40 v\u00e0 CP-67. Nh\u1eefng h\u1ec7 th\u1ed1ng \u0111\u1ea7u ti\u00ean n\u00e0y \u0111\u00e3 \u0111\u1eb7t n\u1ec1n m\u00f3ng cho \u00fd t\u01b0\u1edfng ch\u1ea1y nhi\u1ec1u m\u00e1y \u1ea3o tr\u00ean m\u1ed9t m\u00e1y v\u1eadt l\u00fd. Tuy nhi\u00ean, kh\u00e1i ni\u1ec7m di chuy\u1ec3n tr\u1ef1c ti\u1ebfp, trong \u0111\u00f3 m\u00e1y \u1ea3o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c di chuy\u1ec3n gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 v\u1eadt l\u00fd trong khi n\u00f3 v\u1eabn \u0111ang ho\u1ea1t \u0111\u1ed9ng, m\u00e3i \u0111\u1ebfn sau n\u00e0y m\u1edbi \u0111\u01b0\u1ee3c hi\u1ec7n th\u1ef1c h\u00f3a \u0111\u1ea7y \u0111\u1ee7.<\/p>\n<p>\u0110\u1ec1 c\u1eadp \u0111\u00e1ng ch\u00fa \u00fd \u0111\u1ea7u ti\u00ean v\u1ec1 vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o trong t\u00e0i li\u1ec7u h\u1ecdc thu\u1eadt xu\u1ea5t hi\u1ec7n v\u00e0o n\u0103m 2001, trong m\u1ed9t b\u00e0i nghi\u00ean c\u1ee9u c\u00f3 t\u1ef1a \u0111\u1ec1 \u201cKi\u1ebfn tr\u00fac XenoServer \u0111ang ph\u00e1t tri\u1ec3n\u201d c\u1ee7a Simon Crosby v\u00e0 Ian Pratt. C\u00f4ng tr\u00ecnh quan tr\u1ecdng n\u00e0y \u0111\u00e3 gi\u1edbi thi\u1ec7u \u00fd t\u01b0\u1edfng \u201cdi chuy\u1ec3n tr\u1ef1c ti\u1ebfp\u201d nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n cho ph\u00e9p m\u00e1y \u1ea3o di chuy\u1ec3n li\u1ec1n m\u1ea1ch gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 v\u1eadt l\u00fd. Nghi\u00ean c\u1ee9u sau \u0111\u00f3 v\u00e0 nh\u1eefng ti\u1ebfn b\u1ed9 trong c\u00f4ng ngh\u1ec7 \u1ea3o h\u00f3a \u0111\u00e3 d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c t\u1ebf v\u00e0 hi\u1ec7u qu\u1ea3 \u0111\u1ec3 di chuy\u1ec3n VM.<\/p>\n<h2>Th\u00f4ng tin chi ti\u1ebft v\u1ec1 di chuy\u1ec3n m\u00e1y \u1ea3o<\/h2>\n<p>Di chuy\u1ec3n m\u00e1y \u1ea3o l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p bao g\u1ed3m nhi\u1ec1u b\u01b0\u1edbc v\u00e0 c\u00e2n nh\u1eafc \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o chuy\u1ec3n th\u00e0nh c\u00f4ng m\u00e1y \u1ea3o t\u1eeb m\u00e1y ch\u1ee7 n\u00e0y sang m\u00e1y ch\u1ee7 kh\u00e1c. M\u1ee5c ti\u00eau ch\u00ednh l\u00e0 gi\u1ea3m thi\u1ec3u th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n trong khi v\u1eabn duy tr\u00ec tr\u1ea1ng th\u00e1i, d\u1eef li\u1ec7u v\u00e0 k\u1ebft n\u1ed1i m\u1ea1ng c\u1ee7a VM. M\u1ed9t s\u1ed1 c\u00f4ng ngh\u1ec7 v\u00e0 k\u1ef9 thu\u1eadt g\u00f3p ph\u1ea7n v\u00e0o s\u1ef1 th\u00e0nh c\u00f4ng c\u1ee7a qu\u00e1 tr\u00ecnh di chuy\u1ec3n VM, bao g\u1ed3m di chuy\u1ec3n b\u1ed9 nh\u1edb, di chuy\u1ec3n b\u1ed9 l\u01b0u tr\u1eef v\u00e0 di chuy\u1ec3n m\u1ea1ng.<\/p>\n<h3>Di chuy\u1ec3n b\u1ed9 nh\u1edb<\/h3>\n<p>Di chuy\u1ec3n b\u1ed9 nh\u1edb li\u00ean quan \u0111\u1ebfn vi\u1ec7c chuy\u1ec3n n\u1ed9i dung c\u1ee7a b\u1ed9 nh\u1edb VM t\u1eeb m\u00e1y ch\u1ee7 ngu\u1ed3n sang m\u00e1y ch\u1ee7 \u0111\u00edch. Trong qu\u00e1 tr\u00ecnh n\u00e0y, qu\u00e1 tr\u00ecnh th\u1ef1c thi c\u1ee7a VM b\u1ecb t\u1ea1m d\u1eebng trong th\u1eddi gian ng\u1eafn \u0111\u1ec3 th\u1ef1c hi\u1ec7n ch\u1ee5p nhanh b\u1ed9 nh\u1edb. Sau \u0111\u00f3, \u1ea3nh ch\u1ee5p nhanh \u0111\u01b0\u1ee3c truy\u1ec1n qua m\u1ea1ng \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u00edch, n\u01a1i tr\u1ea1ng th\u00e1i b\u1ed9 nh\u1edb c\u1ee7a VM \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng l\u1ea1i, cho ph\u00e9p n\u00f3 ti\u1ebfp t\u1ee5c th\u1ef1c thi.<\/p>\n<h3>Di chuy\u1ec3n b\u1ed9 nh\u1edb<\/h3>\n<p>Di chuy\u1ec3n b\u1ed9 nh\u1edb bao g\u1ed3m vi\u1ec7c di chuy\u1ec3n \u1ea3nh \u0111\u0129a c\u1ee7a VM v\u00e0 c\u00e1c t\u00e0i nguy\u00ean l\u01b0u tr\u1eef li\u00ean quan kh\u00e1c t\u1eeb ngu\u1ed3n \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u00edch. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng VM v\u1eabn gi\u1eef \u0111\u01b0\u1ee3c quy\u1ec1n truy c\u1eadp v\u00e0o d\u1eef li\u1ec7u c\u1ee7a n\u00f3 ngay c\u1ea3 sau khi di chuy\u1ec3n. \u0110i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i \u0111\u1ed3ng b\u1ed9 h\u00f3a n\u1ed9i dung l\u01b0u tr\u1eef \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n.<\/p>\n<h3>Di chuy\u1ec3n m\u1ea1ng<\/h3>\n<p>Di chuy\u1ec3n m\u1ea1ng \u0111\u1ea3m b\u1ea3o r\u1eb1ng VM duy tr\u00ec k\u1ebft n\u1ed1i m\u1ea1ng trong su\u1ed1t qu\u00e1 tr\u00ecnh di chuy\u1ec3n. \u0110\u1ecba ch\u1ec9 IP v\u00e0 c\u1ea5u h\u00ecnh m\u1ea1ng \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt \u0111\u1ec3 ph\u1ea3n \u00e1nh li\u1ec1n m\u1ea1ch m\u00f4i tr\u01b0\u1eddng m\u00e1y ch\u1ee7 m\u1edbi. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 kh\u00e1c v\u1eabn c\u00f3 th\u1ec3 truy c\u1eadp VM trong v\u00e0 sau khi di chuy\u1ec3n.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o<\/h2>\n<p>Vi\u1ec7c th\u1ef1c hi\u1ec7n th\u00e0nh c\u00f4ng qu\u00e1 tr\u00ecnh di chuy\u1ec3n VM \u0111\u00f2i h\u1ecfi s\u1ef1 c\u1ed9ng t\u00e1c gi\u1eefa nhi\u1ec1u th\u00e0nh ph\u1ea7n trong c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u1ea3o h\u00f3a. C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh li\u00ean quan \u0111\u1ebfn vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o l\u00e0:<\/p>\n<ol>\n<li>\n<p><strong>Gi\u00e1m s\u00e1t vi\u00ean:<\/strong> Hypervisor l\u00e0 ph\u1ea7n m\u1ec1m c\u1ed1t l\u00f5i ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o, qu\u1ea3n l\u00fd v\u00e0 ch\u1ea1y c\u00e1c m\u00e1y \u1ea3o. N\u00f3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho qu\u00e1 tr\u00ecnh di chuy\u1ec3n b\u1eb1ng c\u00e1ch \u0111i\u1ec1u ph\u1ed1i chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u00e1y \u1ea3o gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n:<\/strong> M\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n qu\u1ea3n l\u00fd to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh di chuy\u1ec3n VM. N\u00f3 ph\u1ed1i h\u1ee3p li\u00ean l\u1ea1c gi\u1eefa m\u00e1y ch\u1ee7 ngu\u1ed3n v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00edch, b\u1eaft \u0111\u1ea7u c\u00e1c y\u00eau c\u1ea7u di chuy\u1ec3n v\u00e0 theo d\u00f5i tr\u1ea1ng th\u00e1i di chuy\u1ec3n.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1eb7t ph\u1eb3ng d\u1eef li\u1ec7u:<\/strong> M\u1eb7t ph\u1eb3ng d\u1eef li\u1ec7u x\u1eed l\u00fd vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u VM th\u1ef1c t\u1ebf, bao g\u1ed3m \u1ea3nh ch\u1ee5p nhanh b\u1ed9 nh\u1edb, h\u00ecnh \u1ea3nh l\u01b0u tr\u1eef v\u00e0 c\u1ea5u h\u00ecnh m\u1ea1ng. N\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i m\u1ed9t c\u00e1ch an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ed9 nh\u1edb chia s\u1ebb:<\/strong> B\u1ed9 nh\u1edb d\u00f9ng chung \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ee9a \u1ea3nh \u0111\u0129a VM v\u00e0 c\u00e1c t\u1ec7p li\u00ean quan kh\u00e1c c\u1ea7n c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c t\u1eeb c\u1ea3 m\u00e1y ch\u1ee7 ngu\u1ed3n v\u00e0 m\u00e1y ch\u1ee7 \u0111\u00edch trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n.<\/p>\n<\/li>\n<\/ol>\n<h2>Ph\u00e2n t\u00edch c\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a di chuy\u1ec3n m\u00e1y \u1ea3o<\/h2>\n<p>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o l\u00e0 tr\u1ee5 c\u1ed9t v\u1ec1 ti\u1ec7n \u00edch v\u00e0 m\u1ee9c \u0111\u1ed9 ph\u1ed5 bi\u1ebfn c\u1ee7a n\u00f3 trong m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n to\u00e1n hi\u1ec7n \u0111\u1ea1i. Nh\u1eefng t\u00ednh n\u0103ng n\u00e0y bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>Di chuy\u1ec3n tr\u1ef1c ti\u1ebfp:<\/strong> M\u1ed9t trong nh\u1eefng kh\u00eda c\u1ea1nh quan tr\u1ecdng nh\u1ea5t c\u1ee7a vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o l\u00e0 kh\u1ea3 n\u0103ng di chuy\u1ec3n c\u00e1c m\u00e1y \u1ea3o trong khi ch\u00fang v\u1eabn \u0111ang ch\u1ea1y. Kh\u1ea3 n\u0103ng di chuy\u1ec3n tr\u1ef1c ti\u1ebfp n\u00e0y gi\u1ea3m thi\u1ec3u th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n s\u00e0ng c\u1ee7a d\u1ecbch v\u1ee5 li\u00ean t\u1ee5c.<\/p>\n<\/li>\n<li>\n<p><strong>C\u00e2n b\u1eb1ng t\u00e0i nguy\u00ean:<\/strong> Di chuy\u1ec3n VM cho ph\u00e9p c\u00e2n b\u1eb1ng t\u00e0i nguy\u00ean \u0111\u1ed9ng tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 v\u1eadt l\u00fd. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 m\u00e1y \u1ea3o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c di chuy\u1ec3n sang c\u00e1c m\u00e1y ch\u1ee7 c\u00f3 m\u1ee9c s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean th\u1ea5p h\u01a1n \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c ph\u00e2n b\u1ed5 t\u00e0i nguy\u00ean v\u00e0 n\u00e2ng cao hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u1eafc ph\u1ee5c th\u1ea3m h\u1ecda:<\/strong> Di chuy\u1ec3n VM \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong c\u00e1c t\u00ecnh hu\u1ed1ng kh\u1eafc ph\u1ee5c th\u1ea3m h\u1ecda. B\u1eb1ng c\u00e1ch cho ph\u00e9p nhanh ch\u00f3ng di chuy\u1ec3n m\u00e1y \u1ea3o \u0111\u1ebfn c\u00e1c m\u00e1y ch\u1ee7 kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng, doanh nghi\u1ec7p c\u00f3 th\u1ec3 ph\u1ee5c h\u1ed3i sau l\u1ed7i v\u00e0 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ea3o tr\u00ec ph\u1ea7n c\u1ee9ng:<\/strong> Di chuy\u1ec3n m\u00e1y \u1ea3o \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch trong c\u00e1c ho\u1ea1t \u0111\u1ed9ng b\u1ea3o tr\u00ec ph\u1ea7n c\u1ee9ng. B\u1eb1ng c\u00e1ch di chuy\u1ec3n m\u00e1y \u1ea3o kh\u1ecfi m\u00e1y ch\u1ee7 \u0111ang b\u1ea3o tr\u00ec, qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u1eadp nh\u1eadt ho\u1eb7c s\u1eeda ch\u1eefa m\u00e0 kh\u00f4ng l\u00e0m gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5.<\/p>\n<\/li>\n<li>\n<p><strong>Hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng:<\/strong> Di chuy\u1ec3n VM cho ph\u00e9p h\u1ee3p nh\u1ea5t kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c tr\u00ean m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng m\u00e1y ch\u1ee7 v\u1eadt l\u00fd nh\u1ecf h\u01a1n trong th\u1eddi gian nhu c\u1ea7u th\u1ea5p. Vi\u1ec7c h\u1ee3p nh\u1ea5t n\u00e0y cho ph\u00e9p c\u00e1c t\u1ed5 ch\u1ee9c t\u1eaft ngu\u1ed3n c\u00e1c m\u00e1y ch\u1ee7 kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u00fang m\u1ee9c, gi\u00fap ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i di chuy\u1ec3n m\u00e1y \u1ea3o<\/h2>\n<p>Di chuy\u1ec3n m\u00e1y \u1ea3o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh c\u00e1c lo\u1ea1i kh\u00e1c nhau d\u1ef1a tr\u00ean c\u00f4ng ngh\u1ec7 c\u01a1 b\u1ea3n ho\u1eb7c ph\u1ea1m vi di chuy\u1ec3n. Hai lo\u1ea1i di chuy\u1ec3n VM ch\u00ednh l\u00e0:<\/p>\n<h3>1. Di c\u01b0 ngu\u1ed9i<\/h3>\n<p>Di chuy\u1ec3n ngu\u1ed9i bao g\u1ed3m vi\u1ec7c t\u1eaft m\u00e1y \u1ea3o tr\u00ean m\u00e1y ch\u1ee7 ngu\u1ed3n tr\u01b0\u1edbc khi di chuy\u1ec3n n\u00f3 sang m\u00e1y ch\u1ee7 \u0111\u00edch. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ea3m b\u1ea3o tr\u1ea1ng th\u00e1i s\u1ea1ch cho qu\u00e1 tr\u00ecnh di chuy\u1ec3n nh\u01b0ng d\u1eabn \u0111\u1ebfn th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng t\u1ea1m th\u1eddi trong qu\u00e1 tr\u00ecnh n\u00e0y. N\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ea3o tr\u00ec theo k\u1ebf ho\u1ea1ch ho\u1eb7c khi m\u00e1y \u1ea3o kh\u00f4ng th\u1ec3 di chuy\u1ec3n tr\u1ef1c ti\u1ebfp do h\u1ea1n ch\u1ebf v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt.<\/p>\n<h3>2. Di c\u01b0 tr\u1ef1c ti\u1ebfp (Di c\u01b0 \u1ea5m \u00e1p)<\/h3>\n<p>Di chuy\u1ec3n tr\u1ef1c ti\u1ebfp, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 di chuy\u1ec3n \u1ea5m, cho ph\u00e9p di chuy\u1ec3n m\u00e1y \u1ea3o gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 m\u00e0 kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng ch\u00fa \u00fd n\u00e0o. Ki\u1ec3u di chuy\u1ec3n n\u00e0y \u0111\u01b0\u1ee3c \u01b0u ti\u00ean trong c\u00e1c t\u00ecnh hu\u1ed1ng m\u00e0 t\u00ednh kh\u1ea3 d\u1ee5ng c\u1ee7a d\u1ecbch v\u1ee5 li\u00ean t\u1ee5c l\u00e0 r\u1ea5t quan tr\u1ecdng. Di c\u01b0 tr\u1ef1c ti\u1ebfp c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh hai lo\u1ea1i ph\u1ee5:<\/p>\n<ul>\n<li>\n<p><strong>Di chuy\u1ec3n tr\u1ef1c ti\u1ebfp sao ch\u00e9p tr\u01b0\u1edbc:<\/strong> Trong ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, c\u00e1c trang b\u1ed9 nh\u1edb c\u1ee7a VM \u0111\u01b0\u1ee3c sao ch\u00e9p l\u1eb7p \u0111i l\u1eb7p l\u1ea1i v\u00e0o m\u00e1y ch\u1ee7 \u0111\u00edch trong khi VM ti\u1ebfp t\u1ee5c ch\u1ea1y tr\u00ean m\u00e1y ch\u1ee7 ngu\u1ed3n. Qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c l\u1eb7p l\u1ea1i cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u1ebfn ng\u01b0\u1ee1ng h\u1ed9i t\u1ee5 b\u1ed9 nh\u1edb, t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u00f3 tr\u1ea1ng th\u00e1i b\u1ed9 nh\u1edb cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c chuy\u1ec3n giao v\u00e0 qu\u00e1 tr\u00ecnh th\u1ef1c thi VM \u0111\u01b0\u1ee3c chuy\u1ec3n sang m\u00e1y ch\u1ee7 \u0111\u00edch.<\/p>\n<\/li>\n<li>\n<p><strong>Di chuy\u1ec3n tr\u1ef1c ti\u1ebfp sau sao ch\u00e9p:<\/strong> Trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n tr\u1ef1c ti\u1ebfp sau sao ch\u00e9p, VM \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn m\u00e1y ch\u1ee7 \u0111\u00edch m\u1ed9t c\u00e1ch nhanh ch\u00f3ng, ch\u1ec9 v\u1edbi c\u00e1c trang b\u1ed9 nh\u1edb thi\u1ebft y\u1ebfu \u0111\u01b0\u1ee3c sao ch\u00e9p ban \u0111\u1ea7u. C\u00e1c trang b\u1ed9 nh\u1edb c\u00f2n l\u1ea1i \u0111\u01b0\u1ee3c truy\u1ec1n theo y\u00eau c\u1ea7u trong khi VM ch\u1ea1y tr\u00ean m\u00e1y ch\u1ee7 \u0111\u00edch. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y gi\u1ea3m thi\u1ec3u th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng nh\u01b0ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u0103ng l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n.<\/p>\n<\/li>\n<\/ul>\n<h2>C\u00e1ch s\u1eed d\u1ee5ng t\u00ednh n\u0103ng di chuy\u1ec3n m\u00e1y \u1ea3o v\u00e0 nh\u1eefng th\u00e1ch th\u1ee9c li\u00ean quan<\/h2>\n<p>Di chuy\u1ec3n m\u00e1y \u1ea3o mang l\u1ea1i nhi\u1ec1u \u1ee9ng d\u1ee5ng v\u00e0 l\u1ee3i \u00edch th\u1ef1c t\u1ebf kh\u00e1c nhau, nh\u01b0ng vi\u1ec7c tri\u1ec3n khai n\u00f3 \u0111i k\u00e8m v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c v\u00e0 c\u00e2n nh\u1eafc nh\u1ea5t \u0111\u1ecbnh. M\u1ed9t s\u1ed1 c\u00e1ch ph\u1ed5 bi\u1ebfn \u0111\u1ec3 s\u1eed d\u1ee5ng di chuy\u1ec3n VM bao g\u1ed3m:<\/p>\n<ol>\n<li>\n<p><strong>C\u00e2n b\u1eb1ng t\u1ea3i:<\/strong> Di chuy\u1ec3n VM cho ph\u00e9p qu\u1ea3n tr\u1ecb vi\u00ean c\u00e2n b\u1eb1ng kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 v\u1eadt l\u00fd m\u1ed9t c\u00e1ch linh ho\u1ea1t. B\u1eb1ng c\u00e1ch di chuy\u1ec3n m\u00e1y \u1ea3o t\u1eeb m\u00e1y ch\u1ee7 \u0111\u01b0\u1ee3c t\u1ea3i n\u1eb7ng sang m\u00e1y ch\u1ee7 kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u00fang m\u1ee9c, hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng t\u1ed5ng th\u1ec3 v\u00e0 hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean s\u1ebd \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n.<\/p>\n<\/li>\n<li>\n<p><strong>Ngu\u1ed3n t\u1ed5ng h\u1ee3p:<\/strong> Di chuy\u1ec3n VM cho ph\u00e9p t\u1ea1o c\u00e1c nh\u00f3m t\u00e0i nguy\u00ean, trong \u0111\u00f3 c\u00e1c VM \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p d\u1ef1a tr\u00ean y\u00eau c\u1ea7u t\u00e0i nguy\u00ean v\u00e0 ki\u1ec3u s\u1eed d\u1ee5ng c\u1ee7a ch\u00fang. Vi\u1ec7c g\u1ed9p n\u00e0y cho ph\u00e9p ph\u00e2n b\u1ed5 v\u00e0 qu\u1ea3n l\u00fd ngu\u1ed3n l\u1ef1c hi\u1ec7u qu\u1ea3 h\u01a1n.<\/p>\n<\/li>\n<li>\n<p><strong>T\u00ednh s\u1eb5n s\u00e0ng cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i:<\/strong> Di chuy\u1ec3n VM l\u00e0 m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu trong chi\u1ebfn l\u01b0\u1ee3c c\u00f3 t\u00ednh s\u1eb5n s\u00e0ng cao v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i. B\u1eb1ng c\u00e1ch nhanh ch\u00f3ng di chuy\u1ec3n m\u00e1y \u1ea3o kh\u1ecfi c\u00e1c m\u00e1y ch\u1ee7 b\u1ecb l\u1ed7i, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 duy tr\u00ec t\u00ednh kh\u1ea3 d\u1ee5ng c\u1ee7a d\u1ecbch v\u1ee5 v\u00e0 gi\u1ea3m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng.<\/p>\n<\/li>\n<li>\n<p><strong>B\u1ea3o tr\u00ec trung t\u00e2m d\u1eef li\u1ec7u:<\/strong> Trong qu\u00e1 tr\u00ecnh b\u1ea3o tr\u00ec trung t\u00e2m d\u1eef li\u1ec7u, vi\u1ec7c di chuy\u1ec3n VM \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c m\u00e1y \u1ea3o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c di chuy\u1ec3n kh\u1ecfi c\u00e1c m\u00e1y ch\u1ee7 \u0111ang \u0111\u01b0\u1ee3c b\u1ea3o tr\u00ec m\u00e0 kh\u00f4ng l\u00e0m gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5.<\/p>\n<\/li>\n<\/ol>\n<p>Tuy nhi\u00ean, b\u1ea5t ch\u1ea5p nhi\u1ec1u l\u1ee3i \u00edch, vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o \u0111\u1eb7t ra m\u1ed9t s\u1ed1 th\u00e1ch th\u1ee9c, bao g\u1ed3m:<\/p>\n<ul>\n<li>\n<p><strong>Chi ph\u00ed hi\u1ec7u su\u1ea5t:<\/strong> Di chuy\u1ec3n VM c\u00f3 th\u1ec3 ti\u00eau t\u1ed1n \u0111\u00e1ng k\u1ec3 t\u00e0i nguy\u00ean m\u1ea1ng v\u00e0 t\u00ednh to\u00e1n trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n, d\u1eabn \u0111\u1ebfn suy gi\u1ea3m hi\u1ec7u su\u1ea5t t\u1ea1m th\u1eddi.<\/p>\n<\/li>\n<li>\n<p><strong>M\u1ed1i quan t\u00e2m v\u1ec1 an ninh:<\/strong> Vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 v\u1eadt l\u00fd c\u00f3 th\u1ec3 khi\u1ebfn ch\u00fang g\u1eb7p r\u1ee7i ro b\u1ea3o m\u1eadt ti\u1ec1m \u1ea9n. C\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o m\u1eadt th\u00edch h\u1ee3p ph\u1ea3i \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u00e1y \u1ea3o trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n.<\/p>\n<\/li>\n<li>\n<p><strong>To\u00e0n v\u1eb9n d\u1eef li\u1ec7u:<\/strong> \u0110\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n b\u1ed9 nh\u1edb l\u00e0 r\u1ea5t quan tr\u1ecdng. B\u1ea5t k\u1ef3 s\u1ef1 kh\u00e1c bi\u1ec7t ho\u1eb7c m\u1ea5t d\u1eef li\u1ec7u n\u00e0o trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n \u0111\u1ec1u c\u00f3 th\u1ec3 g\u00e2y ra h\u1eadu qu\u1ea3 nghi\u00eam tr\u1ecdng.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u1ed9 tr\u1ec5 m\u1ea1ng:<\/strong> \u0110\u1ed9 tr\u1ec5 m\u1ea1ng cao c\u00f3 th\u1ec3 k\u00e9o d\u00e0i qu\u00e1 tr\u00ecnh di chuy\u1ec3n VM v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<\/li>\n<\/ul>\n<p>\u0110\u1ec3 gi\u1ea3i quy\u1ebft nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y, vi\u1ec7c l\u1eadp k\u1ebf ho\u1ea1ch, gi\u00e1m s\u00e1t v\u00e0 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 di chuy\u1ec3n ti\u00ean ti\u1ebfn l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft.<\/p>\n<h2>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1<\/h2>\n<p>\u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 di chuy\u1ec3n m\u00e1y \u1ea3o, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i ph\u00e2n bi\u1ec7t n\u00f3 v\u1edbi c\u00e1c thu\u1eadt ng\u1eef t\u01b0\u01a1ng t\u1ef1 v\u00e0 kh\u00e1m ph\u00e1 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a n\u00f3:<\/p>\n<table>\n<thead>\n<tr>\n<th>Thu\u1eadt ng\u1eef<\/th>\n<th>S\u1ef1 \u0111\u1ecbnh ngh\u0129a<\/th>\n<th>S\u1ef1 kh\u00e1c bi\u1ec7t<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u1ea2o h\u00f3a<\/td>\n<td>Qu\u00e1 tr\u00ecnh t\u1ea1o bi\u1ec3u di\u1ec5n \u1ea3o c\u1ee7a c\u00e1c t\u00e0i nguy\u00ean nh\u01b0 m\u00e1y ch\u1ee7 ho\u1eb7c h\u1ec7 \u0111i\u1ec1u h\u00e0nh.<\/td>\n<td>\u1ea2o h\u00f3a bao g\u1ed3m nhi\u1ec1u c\u00f4ng ngh\u1ec7 kh\u00e1c nhau, di chuy\u1ec3n VM l\u00e0 m\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng c\u1ee7a n\u00f3.<\/td>\n<\/tr>\n<tr>\n<td>Di chuy\u1ec3n v\u00f9ng ch\u1ee9a<\/td>\n<td>Di chuy\u1ec3n c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u01b0\u1ee3c ch\u1ee9a gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7.<\/td>\n<td>Di chuy\u1ec3n v\u00f9ng ch\u1ee9a \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n \u1edf c\u00e1c \u1ee9ng d\u1ee5ng, trong khi di chuy\u1ec3n VM li\u00ean quan \u0111\u1ebfn to\u00e0n b\u1ed9 VM v\u00e0 tr\u1ea1ng th\u00e1i c\u1ee7a ch\u00fang.<\/td>\n<\/tr>\n<tr>\n<td>Di chuy\u1ec3n \u0111\u00e1m m\u00e2y<\/td>\n<td>Chuy\u1ec3n \u1ee9ng d\u1ee5ng, d\u1eef li\u1ec7u v\u00e0 d\u1ecbch v\u1ee5 sang m\u00f4i tr\u01b0\u1eddng \u0111\u00e1m m\u00e2y.<\/td>\n<td>Di chuy\u1ec3n \u0111\u00e1m m\u00e2y t\u1eadp trung v\u00e0o to\u00e0n b\u1ed9 ng\u0103n x\u1ebfp \u1ee9ng d\u1ee5ng, trong khi di chuy\u1ec3n VM \u1edf c\u1ea5p \u0111\u1ed9 th\u1ea5p h\u01a1n, x\u1eed l\u00fd c\u00e1c VM ri\u00eang l\u1ebb.<\/td>\n<\/tr>\n<tr>\n<td>Di chuy\u1ec3n \u1ee9ng d\u1ee5ng<\/td>\n<td>Di chuy\u1ec3n c\u00e1c \u1ee9ng d\u1ee5ng t\u1eeb m\u00f4i tr\u01b0\u1eddng n\u00e0y sang m\u00f4i tr\u01b0\u1eddng kh\u00e1c.<\/td>\n<td>Di chuy\u1ec3n \u1ee9ng d\u1ee5ng x\u1eed l\u00fd ph\u1ea7n m\u1ec1m c\u1ee5 th\u1ec3, trong khi di chuy\u1ec3n VM li\u00ean quan \u0111\u1ebfn c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng.<\/td>\n<\/tr>\n<tr>\n<td>\u1ea2nh ch\u1ee5p nhanh VM<\/td>\n<td>N\u1eafm b\u1eaft tr\u1ea1ng th\u00e1i c\u1ee7a m\u00e1y \u1ea3o t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3 \u0111\u1ec3 sao l\u01b0u ho\u1eb7c nh\u00e2n b\u1ea3n.<\/td>\n<td>\u1ea2nh ch\u1ee5p nhanh VM l\u00e0 b\u1ea3n sao t\u0129nh, trong khi qu\u00e1 tr\u00ecnh di chuy\u1ec3n li\u00ean quan \u0111\u1ebfn chuy\u1ec3n \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai trong vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o<\/h2>\n<p>Khi c\u00f4ng ngh\u1ec7 ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o d\u1ef1 ki\u1ebfn s\u1ebd ti\u1ebfn xa h\u01a1n, mang l\u1ea1i hi\u1ec7u qu\u1ea3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n v\u00e0 gi\u1ea3m chi ph\u00ed. M\u1ed9t s\u1ed1 c\u00f4ng ngh\u1ec7 v\u00e0 tri\u1ec3n v\u1ecdng \u0111\u1ea7y h\u1ee9a h\u1eb9n \u0111ang \u0111\u01b0\u1ee3c tri\u1ec3n khai:<\/p>\n<ol>\n<li>\n<p><strong>Di chuy\u1ec3n kh\u00f4ng c\u00f3 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng:<\/strong> Nh\u1eefng n\u1ed7 l\u1ef1c \u0111ang \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c vi\u1ec7c di chuy\u1ec3n kh\u00f4ng c\u00f3 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng, trong \u0111\u00f3 c\u00e1c m\u00e1y \u1ea3o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chuy\u1ec3n gi\u1eefa c\u00e1c m\u00e1y ch\u1ee7 m\u00e0 kh\u00f4ng c\u00f3 b\u1ea5t k\u1ef3 s\u1ef1 gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5 \u0111\u00e1ng ch\u00fa \u00fd n\u00e0o.<\/p>\n<\/li>\n<li>\n<p><strong>Di chuy\u1ec3n ph\u1ea7n c\u1ee9ng-nh\u1eadn th\u1ee9c:<\/strong> C\u00e1c k\u1ef9 thu\u1eadt di chuy\u1ec3n trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 t\u00ednh \u0111\u1ebfn c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ph\u1ea7n c\u1ee9ng \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a v\u1ecb tr\u00ed VM d\u1ef1a tr\u00ean c\u00e1c kh\u1ea3 n\u0103ng ph\u1ea7n c\u1ee9ng c\u01a1 b\u1ea3n.<\/p>\n<\/li>\n<li>\n<p><strong>H\u1ecdc m\u00e1y trong c\u00e1c quy\u1ebft \u0111\u1ecbnh di chuy\u1ec3n:<\/strong> Thu\u1eadt to\u00e1n h\u1ecdc m\u00e1y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh di chuy\u1ec3n th\u00f4ng minh, xem x\u00e9t d\u1eef li\u1ec7u l\u1ecbch s\u1eed, m\u1eabu kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c v\u00e0 h\u00e0nh vi h\u1ec7 th\u1ed1ng.<\/p>\n<\/li>\n<li>\n<p><strong>Di chuy\u1ec3n \u0111\u00e1m m\u00e2y lai:<\/strong> V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a m\u00f4i tr\u01b0\u1eddng \u0111\u00e1m m\u00e2y lai, vi\u1ec7c di chuy\u1ec3n VM s\u1ebd \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c di chuy\u1ec3n kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c m\u1ed9t c\u00e1ch li\u1ec1n m\u1ea1ch gi\u1eefa c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u t\u1ea1i ch\u1ed7 v\u00e0 c\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u00e1m m\u00e2y.<\/p>\n<\/li>\n<\/ol>\n<h2>Di chuy\u1ec3n m\u00e1y \u1ea3o v\u00e0 m\u00e1y ch\u1ee7 proxy<\/h2>\n<p>C\u00e1c nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy nh\u01b0 OneProxy c\u00f3 th\u1ec3 h\u01b0\u1edfng l\u1ee3i t\u1eeb vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau. B\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 di chuy\u1ec3n VM, nh\u00e0 cung c\u1ea5p m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3:<\/p>\n<ul>\n<li>\n<p><strong>Proxy c\u00e2n b\u1eb1ng t\u1ea3i:<\/strong> Di chuy\u1ec3n VM cho ph\u00e9p c\u00e1c m\u00e1y ch\u1ee7 proxy \u0111\u01b0\u1ee3c ph\u00e2n ph\u1ed1i l\u1ea1i m\u1ed9t c\u00e1ch linh ho\u1ea1t tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 v\u1eadt l\u00fd d\u1ef1a tr\u00ean m\u1eabu l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp, \u0111\u1ea3m b\u1ea3o s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean t\u1ed1i \u01b0u.<\/p>\n<\/li>\n<li>\n<p><strong>T\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i:<\/strong> Trong tr\u01b0\u1eddng h\u1ee3p x\u1ea3y ra l\u1ed7i ph\u1ea7n c\u1ee9ng ho\u1eb7c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t, vi\u1ec7c di chuy\u1ec3n VM cho ph\u00e9p c\u00e1c m\u00e1y ch\u1ee7 proxy nhanh ch\u00f3ng \u0111\u01b0\u1ee3c chuy\u1ec3n sang c\u00e1c m\u00e1y ch\u1ee7 thay th\u1ebf, \u0111\u1ea3m b\u1ea3o t\u00ednh s\u1eb5n s\u00e0ng c\u1ee7a d\u1ecbch v\u1ee5 li\u00ean t\u1ee5c.<\/p>\n<\/li>\n<li>\n<p><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 qu\u1ea3n l\u00fd t\u00e0i nguy\u00ean:<\/strong> Di chuy\u1ec3n VM t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c b\u1ed5 sung ho\u1eb7c lo\u1ea1i b\u1ecf m\u00e1y ch\u1ee7 proxy d\u1ef1a tr\u00ean nhu c\u1ea7u, cho ph\u00e9p c\u00e1c nh\u00e0 cung c\u1ea5p m\u1edf r\u1ed9ng quy m\u00f4 d\u1ecbch v\u1ee5 c\u1ee7a h\u1ecd m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e2n b\u1ed1 \u0111\u1ecba l\u00fd:<\/strong> Di chuy\u1ec3n VM c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 tri\u1ec3n khai c\u00e1c m\u00e1y ch\u1ee7 proxy \u1edf nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m kh\u00e1c nhau tr\u00ean to\u00e0n th\u1ebf gi\u1edbi, t\u0103ng c\u01b0\u1eddng t\u00ednh \u0111a d\u1ea1ng v\u00e0 d\u1ef1 ph\u00f2ng v\u1ec1 m\u1eb7t \u0111\u1ecba l\u00fd.<\/p>\n<\/li>\n<\/ul>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 di chuy\u1ec3n m\u00e1y \u1ea3o, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/docs.vmware.com\/en\/VMware-vSphere\/7.0\/com.vmware.vsphere.vcenterhost.doc\/GUID-9CBF25ED-5C91-4DE7-B1C0-8A7E89F2045C.html\" target=\"_new\" rel=\"noopener nofollow\">T\u00e0i li\u1ec7u VMware vMotion<\/a><\/li>\n<li><a href=\"https:\/\/docs.microsoft.com\/en-us\/windows-server\/virtualization\/hyper-v\/deploy\/set-up-hyper-v-live-migration\" target=\"_new\" rel=\"noopener nofollow\">Di chuy\u1ec3n tr\u1ef1c ti\u1ebfp Microsoft Hyper-V<\/a><\/li>\n<li><a href=\"https:\/\/xenproject.org\/developers\/teams\/xenopsd\/live-migration\/\" target=\"_new\" rel=\"noopener nofollow\">Di chuy\u1ec3n tr\u1ef1c ti\u1ebfp XenServer<\/a><\/li>\n<li><a href=\"https:\/\/www.linux-kvm.org\/page\/Live_migration\" target=\"_new\" rel=\"noopener nofollow\">Di chuy\u1ec3n tr\u1ef1c ti\u1ebfp KVM<\/a><\/li>\n<li><a href=\"https:\/\/aws.amazon.com\/cloud-migration\/\" target=\"_new\" rel=\"noopener nofollow\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t v\u1ec1 di chuy\u1ec3n sang \u0111\u00e1m m\u00e2y<\/a><\/li>\n<\/ol>\n<p>T\u00f3m l\u1ea1i, vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a b\u1ed1i c\u1ea3nh \u0111i\u1ec7n to\u00e1n hi\u1ec7n \u0111\u1ea1i, cho ph\u00e9p c\u00e1c doanh nghi\u1ec7p v\u00e0 nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3, kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ed7i v\u00e0 t\u1eadn d\u1ee5ng t\u00e0i nguy\u00ean cao h\u01a1n. Khi c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n, t\u01b0\u01a1ng lai c\u00f2n c\u00f3 nhi\u1ec1u tri\u1ec3n v\u1ecdng th\u00fa v\u1ecb h\u01a1n cho vi\u1ec7c di chuy\u1ec3n m\u00e1y \u1ea3o, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i c\u1ee7a c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u00e1y t\u00ednh tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.<\/p>","protected":false},"featured_media":479526,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479525","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Virtual Machine Migration: A Comprehensive Overview<\/mark>","faq_items":[{"question":"What is virtual machine migration?","answer":"<p>Virtual machine migration is the process of transferring a running virtual machine (VM) from one physical host to another without causing significant downtime or service disruption. It enables businesses to optimize resource utilization, improve fault tolerance, and enhance overall system efficiency.<\/p>"},{"question":"How did virtual machine migration originate?","answer":"<p>The concept of virtual machine migration can be traced back to the 1960s with the introduction of virtualization by IBM's CP-40 and CP-67 systems. The first mention of \"live migration\" appeared in a 2001 research paper titled \"The Evolving XenoServer Architecture\" by Simon Crosby and Ian Pratt.<\/p>"},{"question":"How does virtual machine migration work?","answer":"<p>Virtual machine migration involves memory migration, storage migration, and network migration. Memory contents are transferred from the source to the destination host, and the VM's execution is paused briefly during the process. Storage and network configurations are also moved to ensure seamless operation.<\/p>"},{"question":"What are the key features of virtual machine migration?","answer":"<p>The key features of VM migration include live migration, resource balancing, disaster recovery capabilities, hardware maintenance support, and energy efficiency. Live migration allows VMs to be moved while running, minimizing downtime. Resource balancing optimizes resource allocation, while disaster recovery ensures uninterrupted services during failures.<\/p>"},{"question":"What types of virtual machine migration exist?","answer":"<p>There are two main types of VM migration: cold migration and live migration. Cold migration involves shutting down the VM before migration, while live migration allows VMs to move between hosts without noticeable downtime. Live migration can be further categorized into pre-copy and post-copy methods.<\/p>"},{"question":"How is virtual machine migration used, and what challenges does it pose?","answer":"<p>VM migration is used for load balancing, resource pooling, high availability, fault tolerance, and data center maintenance. However, it comes with challenges such as performance overhead, security concerns, and ensuring data integrity during storage migration.<\/p>"},{"question":"What are the perspectives and future technologies related to virtual machine migration?","answer":"<p>Future trends in VM migration include achieving zero-downtime migration, hardware-aware migration, machine learning-driven decisions, and hybrid cloud migration.<\/p>"},{"question":"How can proxy server providers use virtual machine migration?","answer":"<p>Proxy server providers like OneProxy can benefit from VM migration by dynamically load balancing proxies, enhancing fault tolerance, scaling services efficiently, and achieving geographical distribution.<\/p>"},{"question":"Where can I find more information about virtual machine migration?","answer":"<p>For more insights, you can refer to the following resources:<\/p><ol><li>VMware vMotion Documentation: <a href=\"https:\/\/docs.vmware.com\/en\/VMware-vSphere\/7.0\/com.vmware.vsphere.vcenterhost.doc\/GUID-9CBF25ED-5C91-4DE7-B1C0-8A7E89F2045C.html\" target=\"_new\">Link<\/a><\/li><li>Microsoft Hyper-V Live Migration: <a href=\"https:\/\/docs.microsoft.com\/en-us\/windows-server\/virtualization\/hyper-v\/deploy\/set-up-hyper-v-live-migration\" target=\"_new\">Link<\/a><\/li><li>XenServer Live Migration: <a href=\"https:\/\/xenproject.org\/developers\/teams\/xenopsd\/live-migration\/\" target=\"_new\">Link<\/a><\/li><li>KVM Live Migration: <a href=\"https:\/\/www.linux-kvm.org\/page\/Live_migration\" target=\"_new\">Link<\/a><\/li><li>Cloud Migration Best Practices: <a href=\"https:\/\/aws.amazon.com\/cloud-migration\/\" target=\"_new\">Link<\/a><\/li><\/ol>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479525","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/479525\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/479526"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=479525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}