{"id":131392,"date":"2026-10-22T15:05:25","date_gmt":"2026-10-22T08:05:25","guid":{"rendered":"https:\/\/tino.vn\/blog\/?p=131392"},"modified":"2026-10-22T16:51:47","modified_gmt":"2026-10-22T09:51:47","slug":"vps-bi-cham","status":"publish","type":"post","link":"https:\/\/tino.vn\/blog\/vps-bi-cham\/","title":{"rendered":"H\u01b0\u1edbng kh\u1eafc ph\u1ee5c t\u00ecnh tr\u1ea1ng VPS b\u1ecb ch\u1eadm t\u1eeb A-Z"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>\u0110\u1ec3 kh\u1eafc ph\u1ee5c t\u00ecnh tr\u1ea1ng VPS b\u1ecb ch\u1eadm, b\u1ea1n c\u1ea7n ki\u1ec3m tra m\u1ee9c s\u1eed d\u1ee5ng CPU, RAM, \u1ed5 c\u1ee9ng, k\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng \u0111ang ch\u1ea1y tr\u00ean m\u00e1y ch\u1ee7. Khi x\u00e1c \u0111\u1ecbnh \u0111\u00fang nguy\u00ean nh\u00e2n, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3i ph\u00f3ng t\u00e0i nguy\u00ean, \u0111i\u1ec1u ch\u1ec9nh c\u1ea5u h\u00ecnh ho\u1eb7c n\u00e2ng c\u1ea5p VPS n\u1ebfu c\u1ea7n thi\u1ebft.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>VPS ch\u1ea1y ch\u1eadm kh\u00f4ng nh\u1ea5t thi\u1ebft do c\u1ea5u h\u00ecnh y\u1ebfu. M\u1ed9t ti\u1ebfn tr\u00ecnh ti\u00eau th\u1ee5 CPU b\u1ea5t th\u01b0\u1eddng, database qu\u00e1 t\u1ea3i ho\u1eb7c \u1ed5 c\u1ee9ng g\u1ea7n \u0111\u1ea7y c\u0169ng c\u00f3 th\u1ec3 khi\u1ebfn to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng ph\u1ea3n h\u1ed3i ch\u1eadm. C\u00f9ng Tino t\u00ecm hi\u1ec3u chi ti\u1ebft qua b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y nh\u00e9!<\/strong><\/p>\n\n\n\n<h2 id=\"D\u1ea5u_hi\u1ec7u_nh\u1eadn_bi\u1ebft_VPS_\u0111ang_ho\u1ea1t_\u0111\u1ed9ng_ch\u1eadm\"><strong>D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft VPS \u0111ang ho\u1ea1t \u0111\u1ed9ng ch\u1eadm<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">VPS b\u1ecb ch\u1eadm th\u01b0\u1eddng bi\u1ec3u hi\u1ec7n qua th\u1eddi gian ph\u1ea3n h\u1ed3i t\u0103ng, \u1ee9ng d\u1ee5ng x\u1eed l\u00fd l\u00e2u h\u01a1n b\u00ecnh th\u01b0\u1eddng ho\u1eb7c m\u00e1y ch\u1ee7 th\u01b0\u1eddng xuy\u00ean m\u1ea5t k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 d\u1ea5u hi\u1ec7u d\u1ec5 nh\u1eadn bi\u1ebft g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Website t\u1ea3i ch\u1eadm:<\/strong> Trang web m\u1ea5t nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 hi\u1ec3n th\u1ecb d\u00f9 k\u1ebft n\u1ed1i Internet c\u1ee7a ng\u01b0\u1eddi truy c\u1eadp v\u1eabn \u1ed5n \u0111\u1ecbnh.<\/li>\n\n\n\n<li><strong>SSH ph\u1ea3n h\u1ed3i ch\u1eadm:<\/strong> C\u00e1c l\u1ec7nh nh\u1eadp v\u00e0o Terminal m\u1ea5t nhi\u1ec1u th\u1eddi gian m\u1edbi th\u1ef1c hi\u1ec7n ho\u1eb7c phi\u00ean k\u1ebft n\u1ed1i th\u01b0\u1eddng xuy\u00ean b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/li>\n\n\n\n<li><strong>\u1ee8ng d\u1ee5ng x\u1eed l\u00fd l\u00e2u:<\/strong> Nh\u1eefng ph\u1ea7n m\u1ec1m nh\u01b0 <a href=\"https:\/\/tino.vn\/blog\/n8n-la-gi\/\" data-type=\"post\" data-id=\"104774\" target=\"_blank\" rel=\"noreferrer noopener\">n8n<\/a>,<a href=\"https:\/\/tino.vn\/blog\/openclaw-la-gi\/\" data-type=\"post\" data-id=\"123105\" target=\"_blank\" rel=\"noreferrer noopener\"> OpenClaw<\/a>, <a href=\"https:\/\/tino.vn\/blog\/hermes-agent-la-gi\/\" data-type=\"post\" data-id=\"124505\" target=\"_blank\" rel=\"noreferrer noopener\">Hermes Agent<\/a>, WordPress, database ho\u1eb7c AI Agent c\u00f3 t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd th\u1ea5p h\u01a1n b\u00ecnh th\u01b0\u1eddng.<\/li>\n\n\n\n<li><strong>CPU ho\u1eb7c RAM li\u00ean t\u1ee5c s\u1eed d\u1ee5ng \u1edf m\u1ee9c cao:<\/strong> T\u00e0i nguy\u00ean m\u00e1y ch\u1ee7 kh\u00f4ng \u0111\u1ee7 \u0111\u00e1p \u1ee9ng c\u00e1c t\u00e1c v\u1ee5 \u0111ang ch\u1ea1y.<\/li>\n\n\n\n<li><strong>Thao t\u00e1c \u0111\u1ecdc\/ghi d\u1eef li\u1ec7u b\u1ecb tr\u00ec ho\u00e3n:<\/strong> Vi\u1ec7c t\u1ea3i t\u1ec7p, sao l\u01b0u ho\u1eb7c truy v\u1ea5n database m\u1ea5t nhi\u1ec1u th\u1eddi gian.<\/li>\n\n\n\n<li><strong>D\u1ecbch v\u1ee5 t\u1ef1 d\u1eebng ho\u1eb7c kh\u1edfi \u0111\u1ed9ng l\u1ea1i:<\/strong> M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng b\u1ecb h\u1ec7 \u0111i\u1ec1u h\u00e0nh ho\u1eb7c c\u01a1 ch\u1ebf gi\u1edbi h\u1ea1n t\u00e0i nguy\u00ean d\u1eebng khi g\u1eb7p v\u1ea5n \u0111\u1ec1 v\u1ec1 b\u1ed9 nh\u1edb.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea7n l\u01b0u \u00fd r\u1eb1ng website t\u1ea3i ch\u1eadm ch\u01b0a ch\u1eafc \u0111\u1ed3ng ngh\u0129a v\u1edbi VPS ho\u1ea1t \u0111\u1ed9ng ch\u1eadm. Nguy\u00ean nh\u00e2n c\u0169ng c\u00f3 th\u1ec3 \u0111\u1ebfn t\u1eeb DNS, m\u00e3 ngu\u1ed3n website, d\u1ecbch v\u1ee5 b\u00ean ngo\u00e0i ho\u1eb7c k\u1ebft n\u1ed1i m\u1ea1ng gi\u1eefa ng\u01b0\u1eddi truy c\u1eadp v\u00e0 m\u00e1y ch\u1ee7. V\u00ec v\u1eady, vi\u1ec7c \u0111\u1ea7u ti\u00ean n\u00ean th\u1ef1c hi\u1ec7n l\u00e0 ki\u1ec3m tra t\u00e0i nguy\u00ean b\u00ean trong VPS.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-1-1024x549.png\" alt=\"D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft VPS \u0111ang ho\u1ea1t \u0111\u1ed9ng ch\u1eadm\" class=\"wp-image-131395\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-1-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-1-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-1-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-1-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-1-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft VPS \u0111ang ho\u1ea1t \u0111\u1ed9ng ch\u1eadm<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h2 id=\"Nh\u1eefng_nguy\u00ean_nh\u00e2n_ph\u1ed5_bi\u1ebfn_khi\u1ebfn_VPS_b\u1ecb_ch\u1eadm\"><strong>Nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn khi\u1ebfn VPS b\u1ecb ch\u1eadm<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">VPS c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng ch\u1eadm do nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1c nhau. Trong \u0111\u00f3, ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 thi\u1ebfu t\u00e0i nguy\u00ean, \u1ee9ng d\u1ee5ng ho\u1ea1t \u0111\u1ed9ng b\u1ea5t th\u01b0\u1eddng v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn l\u01b0u tr\u1eef ho\u1eb7c k\u1ebft n\u1ed1i m\u1ea1ng.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Nguy\u00ean nh\u00e2n<\/strong><\/td><td><strong>Bi\u1ec3u hi\u1ec7n th\u01b0\u1eddng g\u1eb7p<\/strong><\/td><td><strong>H\u01b0\u1edbng x\u1eed l\u00fd<\/strong><\/td><\/tr><tr><td>CPU qu\u00e1 t\u1ea3i<\/td><td>T\u00e1c v\u1ee5 ph\u1ea3n h\u1ed3i ch\u1eadm, ti\u1ebfn tr\u00ecnh s\u1eed d\u1ee5ng CPU cao<\/td><td>X\u00e1c \u0111\u1ecbnh ti\u1ebfn tr\u00ecnh, t\u1ed1i \u01b0u \u1ee9ng d\u1ee5ng<\/td><\/tr><tr><td>Thi\u1ebfu RAM<\/td><td>\u1ee8ng d\u1ee5ng gi\u1eadt lag, ph\u00e1t sinh OOM ho\u1eb7c s\u1eed d\u1ee5ng Swap nhi\u1ec1u<\/td><td>Gi\u1ea3m m\u1ee9c s\u1eed d\u1ee5ng RAM, t\u0103ng b\u1ed9 nh\u1edb<\/td><\/tr><tr><td>\u1ed4 c\u1ee9ng g\u1ea7n \u0111\u1ea7y<\/td><td>Kh\u00f4ng ghi \u0111\u01b0\u1ee3c t\u1ec7p, database ph\u00e1t sinh l\u1ed7i<\/td><td>Ki\u1ec3m tra v\u00e0 d\u1ecdn d\u1eef li\u1ec7u kh\u00f4ng c\u1ea7n thi\u1ebft<\/td><\/tr><tr><td>Disk I\/O qu\u00e1 t\u1ea3i<\/td><td>\u0110\u1ecdc\/ghi d\u1eef li\u1ec7u ch\u1eadm, truy v\u1ea5n database l\u00e2u<\/td><td>X\u00e1c \u0111\u1ecbnh t\u00e1c v\u1ee5 g\u00e2y t\u1ea3i I\/O<\/td><\/tr><tr><td>K\u1ebft n\u1ed1i m\u1ea1ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/td><td>SSH ch\u1eadm, website ph\u1ea3n h\u1ed3i th\u1ea5t th\u01b0\u1eddng<\/td><td>Ki\u1ec3m tra \u0111\u01b0\u1eddng truy\u1ec1n, DNS v\u00e0 \u0111\u1ecbnh tuy\u1ebfn<\/td><\/tr><tr><td>\u1ee8ng d\u1ee5ng c\u1ea5u h\u00ecnh ch\u01b0a ph\u00f9 h\u1ee3p<\/td><td>M\u1ed9t d\u1ecbch v\u1ee5 ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean b\u1ea5t th\u01b0\u1eddng<\/td><td>\u0110i\u1ec1u ch\u1ec9nh c\u1ea5u h\u00ecnh v\u00e0 gi\u1edbi h\u1ea1n t\u00e1c v\u1ee5<\/td><\/tr><tr><td>H\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 v\u1eadt l\u00fd qu\u00e1 t\u1ea3i<\/td><td>Hi\u1ec7u su\u1ea5t th\u1ea5p d\u00f9 t\u00e0i nguy\u00ean b\u00ean trong VPS kh\u00f4ng cao<\/td><td>Ki\u1ec3m tra CPU Steal Time, li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p<\/td><\/tr><tr><td>T\u00e1c v\u1ee5 ch\u1ea1y n\u1ec1n ho\u1eb7c ph\u1ea7n m\u1ec1m \u0111\u1ed9c h\u1ea1i<\/td><td>CPU, RAM ho\u1eb7c l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng t\u0103ng b\u1ea5t th\u01b0\u1eddng<\/td><td>Ki\u1ec3m tra ti\u1ebfn tr\u00ecnh, nh\u1eadt k\u00fd v\u00e0 b\u1ea3o m\u1eadt<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i nh\u1eefng nguy\u00ean nh\u00e2n tr\u00ean, vi\u1ec7c ch\u1ea1y \u0111\u1ed3ng th\u1eddi nhi\u1ec1u website, container Docker ho\u1eb7c AI Agent tr\u00ean VPS c\u1ea5u h\u00ecnh th\u1ea5p c\u0169ng c\u00f3 th\u1ec3 khi\u1ebfn t\u00e0i nguy\u00ean nhanh ch\u00f3ng c\u1ea1n ki\u1ec7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u01b0u \u00fd:<\/strong> CPU s\u1eed d\u1ee5ng cao trong th\u1eddi gian ng\u1eafn kh\u00f4ng nh\u1ea5t thi\u1ebft l\u00e0 s\u1ef1 c\u1ed1. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 m\u1ee9c s\u1eed d\u1ee5ng c\u00f3 duy tr\u00ec k\u00e9o d\u00e0i v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf hay kh\u00f4ng.<\/p>\n\n\n\n<h2 id=\"C\u1ea7n_chu\u1ea9n_b\u1ecb_g\u00ec_tr\u01b0\u1edbc_khi_kh\u1eafc_ph\u1ee5c_VPS_b\u1ecb_ch\u1eadm?\"><strong>C\u1ea7n chu\u1ea9n b\u1ecb g\u00ec tr\u01b0\u1edbc khi kh\u1eafc ph\u1ee5c VPS b\u1ecb ch\u1eadm?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 th\u1ef1c hi\u1ec7n nh\u1eefng thao t\u00e1c ki\u1ec3m tra d\u01b0\u1edbi \u0111\u00e2y, b\u1ea1n c\u1ea7n c\u00f3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u1ed9t VPS \u0111ang ch\u1ea1y Ubuntu ho\u1eb7c Debian.<\/li>\n\n\n\n<li>\u0110\u1ecba ch\u1ec9 IP m\u00e1y ch\u1ee7 v\u00e0 t\u00e0i kho\u1ea3n SSH.<\/li>\n\n\n\n<li>Quy\u1ec1n qu\u1ea3n tr\u1ecb root ho\u1eb7c t\u00e0i kho\u1ea3n \u0111\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng sudo.<\/li>\n\n\n\n<li>Ph\u1ea7n m\u1ec1m k\u1ebft n\u1ed1i SSH nh\u01b0 Xshell ho\u1eb7c Windows Terminal.<\/li>\n\n\n\n<li>B\u1ea3n sao l\u01b0u d\u1eef li\u1ec7u quan tr\u1ecdng tr\u01b0\u1edbc khi thay \u0111\u1ed5i c\u1ea5u h\u00ecnh ho\u1eb7c d\u1eebng d\u1ecbch v\u1ee5.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-2-1024x549.png\" alt=\"C\u1ea7n chu\u1ea9n b\u1ecb g\u00ec tr\u01b0\u1edbc khi kh\u1eafc ph\u1ee5c VPS b\u1ecb ch\u1eadm?\" class=\"wp-image-131396\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-2-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-2-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-2-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-2-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-2-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>C\u1ea7n chu\u1ea9n b\u1ecb g\u00ec tr\u01b0\u1edbc khi kh\u1eafc ph\u1ee5c VPS b\u1ecb ch\u1eadm?<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c l\u1ec7nh trong h\u01b0\u1edbng d\u1eabn \u0111\u01b0\u1ee3c vi\u1ebft cho m\u00f4i tr\u01b0\u1eddng <strong>Linux Ubuntu\/Debian<\/strong>, s\u1eed d\u1ee5ng nh\u1eefng c\u00f4ng c\u1ee5 qu\u1ea3n tr\u1ecb ph\u1ed5 bi\u1ebfn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu \u0111\u0103ng nh\u1eadp b\u1eb1ng t\u00e0i kho\u1ea3n root, b\u1ea1n c\u00f3 th\u1ec3 b\u1ecf ti\u1ec1n t\u1ed1 sudo trong c\u00e1c l\u1ec7nh y\u00eau c\u1ea7u quy\u1ec1n qu\u1ea3n tr\u1ecb. Tr\u01b0\u1eddng h\u1ee3p VPS s\u1eed d\u1ee5ng AlmaLinux, Rocky Linux ho\u1eb7c Windows Server, m\u1ed9t s\u1ed1 c\u00f4ng c\u1ee5 v\u00e0 c\u00e1ch c\u00e0i \u0111\u1eb7t s\u1ebd kh\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eb7c bi\u1ec7t, b\u1ea1n kh\u00f4ng n\u00ean kh\u1edfi \u0111\u1ed9ng l\u1ea1i VPS, x\u00f3a nh\u1eadt k\u00fd ho\u1eb7c d\u1eebng ti\u1ebfn tr\u00ecnh ngay khi th\u1ea5y h\u1ec7 th\u1ed1ng ch\u1eadm. H\u00e3y thu th\u1eadp th\u00f4ng tin tr\u01b0\u1edbc \u0111\u1ec3 tr\u00e1nh m\u1ea5t d\u1ea5u nguy\u00ean nh\u00e2n g\u00e2y l\u1ed7i.<\/p>\n\n\n\n<h2 id=\"H\u01b0\u1edbng_d\u1eabn_ki\u1ec3m_tra_nguy\u00ean_nh\u00e2n_VPS_b\u1ecb_ch\u1eadm_theo_7_b\u01b0\u1edbc\"><strong>H\u01b0\u1edbng d\u1eabn ki\u1ec3m tra nguy\u00ean nh\u00e2n VPS b\u1ecb ch\u1eadm theo 7 b\u01b0\u1edbc<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 t\u00ecm nguy\u00ean nh\u00e2n VPS ch\u1ea1y ch\u1eadm, h\u00e3y ki\u1ec3m tra l\u1ea7n l\u01b0\u1ee3t c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7, CPU, RAM, \u1ed5 c\u1ee9ng, \u1ee9ng d\u1ee5ng v\u00e0 k\u1ebft n\u1ed1i m\u1ea1ng. C\u00e1c thao t\u00e1c d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo tr\u00ecnh t\u1ef1 t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn chuy\u00ean s\u00e2u.<\/p>\n\n\n\n<h3 id=\"B\u01b0\u1edbc_1:_K\u1ebft_n\u1ed1i_SSH_v\u00e0_ki\u1ec3m_tra_c\u1ea5u_h\u00ecnh_VPS\"><strong>B\u01b0\u1edbc 1: K\u1ebft n\u1ed1i SSH v\u00e0 ki\u1ec3m tra c\u1ea5u h\u00ecnh VPS<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc ti\u00ean, h\u00e3y k\u1ebft n\u1ed1i v\u1edbi VPS b\u1eb1ng SSH \u0111\u1ec3 ki\u1ec3m tra h\u1ec7 \u0111i\u1ec1u h\u00e0nh v\u00e0 t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi \u0111\u0103ng nh\u1eadp th\u00e0nh c\u00f4ng, ch\u1ea1y l\u1ec7nh:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cat \/etc\/os-release<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh n\u00e0y hi\u1ec3n th\u1ecb t\u00ean v\u00e0 phi\u00ean b\u1ea3n h\u1ec7 \u0111i\u1ec1u h\u00e0nh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp t\u1ee5c ki\u1ec3m tra s\u1ed1 l\u01b0\u1ee3ng CPU:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nproc<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra dung l\u01b0\u1ee3ng RAM:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>free -h<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra dung l\u01b0\u1ee3ng \u1ed5 \u0111\u0129a:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lsblk -o NAME,SIZE,TYPE,MOUNTPOINTS<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Cu\u1ed1i c\u00f9ng, ki\u1ec3m tra th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng v\u00e0 t\u1ea3i h\u1ec7 th\u1ed1ng:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>uptime<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-3-1024x549.png\" alt=\"B\u01b0\u1edbc 1: K\u1ebft n\u1ed1i SSH v\u00e0 ki\u1ec3m tra c\u1ea5u h\u00ecnh VPS\" class=\"wp-image-131397\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-3-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-3-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-3-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-3-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-3-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 1: K\u1ebft n\u1ed1i SSH v\u00e0 ki\u1ec3m tra c\u1ea5u h\u00ecnh VPS<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">K\u1ebft qu\u1ea3 c\u1ee7a l\u1ec7nh <strong>uptime<\/strong> c\u00f3 ph\u1ea7n <strong>load average<\/strong> v\u1edbi ba ch\u1ec9 s\u1ed1 t\u01b0\u01a1ng \u1ee9ng m\u1ee9c t\u1ea3i trung b\u00ecnh trong 1, 5 v\u00e0 15 ph\u00fat g\u1ea7n nh\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, n\u1ebfu VPS ch\u1ec9 c\u00f3 2 vCPU nh\u01b0ng Load Average li\u00ean t\u1ee5c cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi 2, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 \u0111ang g\u1eb7p t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i CPU ho\u1eb7c nhi\u1ec1u ti\u1ebfn tr\u00ecnh ph\u1ea3i ch\u1edd t\u00e0i nguy\u00ean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, Load Average c\u0169ng bao g\u1ed3m m\u1ed9t s\u1ed1 t\u00e1c v\u1ee5 \u0111ang ch\u1edd I\/O, v\u00ec v\u1eady kh\u00f4ng th\u1ec3 ch\u1ec9 d\u1ef1a v\u00e0o ch\u1ec9 s\u1ed1 n\u00e0y \u0111\u1ec3 k\u1ebft lu\u1eadn CPU qu\u00e1 t\u1ea3i.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-4-1024x549.png\" alt=\"B\u01b0\u1edbc 1: K\u1ebft n\u1ed1i SSH v\u00e0 ki\u1ec3m tra c\u1ea5u h\u00ecnh VPS\" class=\"wp-image-131398\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-4-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-4-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-4-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-4-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-4-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 1: K\u1ebft n\u1ed1i SSH v\u00e0 ki\u1ec3m tra c\u1ea5u h\u00ecnh VPS<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3 c\u1ea7n x\u00e1c \u0111\u1ecbnh:<\/strong> S\u1ed1 l\u01b0\u1ee3ng vCPU, dung l\u01b0\u1ee3ng RAM, \u1ed5 \u0111\u0129a v\u00e0 m\u1ee9c t\u1ea3i hi\u1ec7n t\u1ea1i c\u1ee7a VPS.<\/p>\n\n\n\n<h3 id=\"B\u01b0\u1edbc_2:_Ki\u1ec3m_tra_m\u1ee9c_s\u1eed_d\u1ee5ng_CPU_v\u00e0_ti\u1ebfn_tr\u00ecnh\"><strong>B\u01b0\u1edbc 2: Ki\u1ec3m tra m\u1ee9c s\u1eed d\u1ee5ng CPU v\u00e0 ti\u1ebfn tr\u00ecnh<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 bi\u1ebft VPS c\u00f3 \u0111ang qu\u00e1 t\u1ea3i CPU hay kh\u00f4ng, ch\u1ea1y l\u1ec7nh:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>top<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng c\u1ee5 top hi\u1ec3n th\u1ecb nh\u1eefng th\u00f4ng tin quan tr\u1ecdng nh\u01b0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>%CPU<\/strong><strong>:<\/strong> M\u1ee9c s\u1eed d\u1ee5ng CPU c\u1ee7a t\u1eebng ti\u1ebfn tr\u00ecnh.<\/li>\n\n\n\n<li><strong>%MEM<\/strong><strong>:<\/strong> T\u1ef7 l\u1ec7 RAM m\u00e0 ti\u1ebfn tr\u00ecnh \u0111ang s\u1eed d\u1ee5ng.<\/li>\n\n\n\n<li><strong>PID<\/strong><strong>:<\/strong> M\u00e3 \u0111\u1ecbnh danh c\u1ee7a ti\u1ebfn tr\u00ecnh.<\/li>\n\n\n\n<li><strong>COMMAND<\/strong><strong>:<\/strong> T\u00ean l\u1ec7nh ho\u1eb7c ch\u01b0\u01a1ng tr\u00ecnh \u0111ang ch\u1ea1y.<\/li>\n\n\n\n<li><strong>load average<\/strong><strong>:<\/strong> M\u1ee9c t\u1ea3i trung b\u00ecnh c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Trong giao di\u1ec7n top, b\u1ea1n c\u00f3 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Nh\u1ea5n <strong>P<\/strong> \u0111\u1ec3 s\u1eafp x\u1ebfp ti\u1ebfn tr\u00ecnh theo m\u1ee9c s\u1eed d\u1ee5ng CPU.<\/li>\n\n\n\n<li>Nh\u1ea5n <strong>M<\/strong> \u0111\u1ec3 s\u1eafp x\u1ebfp theo m\u1ee9c s\u1eed d\u1ee5ng RAM.<\/li>\n\n\n\n<li>Nh\u1ea5n <strong>q<\/strong> \u0111\u1ec3 tho\u00e1t.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-5-1024x549.png\" alt=\"B\u01b0\u1edbc 2: Ki\u1ec3m tra m\u1ee9c s\u1eed d\u1ee5ng CPU v\u00e0 ti\u1ebfn tr\u00ecnh\" class=\"wp-image-131399\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-5-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-5-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-5-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-5-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-5-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 2: Ki\u1ec3m tra m\u1ee9c s\u1eed d\u1ee5ng CPU v\u00e0 ti\u1ebfn tr\u00ecnh<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu ch\u1ec9 mu\u1ed1n li\u1ec7t k\u00ea nhanh c\u00e1c ti\u1ebfn tr\u00ecnh s\u1eed d\u1ee5ng nhi\u1ec1u CPU nh\u1ea5t, ch\u1ea1y:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ps -eo pid,comm,%cpu,%mem --sort=-%cpu | head -n 11<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ebft qu\u1ea3 gi\u00fap b\u1ea1n nh\u1eadn di\u1ec7n c\u00e1c \u1ee9ng d\u1ee5ng \u0111ang ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean, ch\u1eb3ng h\u1ea1n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MySQL ho\u1eb7c PostgreSQL.<\/li>\n\n\n\n<li>PHP-FPM.<\/li>\n\n\n\n<li>Node.js.<\/li>\n\n\n\n<li>C\u00e1c \u1ee9ng d\u1ee5ng Python.<\/li>\n\n\n\n<li>Ti\u1ebfn tr\u00ecnh x\u1eed l\u00fd AI.<\/li>\n\n\n\n<li>T\u00e1c v\u1ee5 sao l\u01b0u ho\u1eb7c \u0111\u1ed3ng b\u1ed9 d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-6-1024x549.png\" alt=\"B\u01b0\u1edbc 2: Ki\u1ec3m tra m\u1ee9c s\u1eed d\u1ee5ng CPU v\u00e0 ti\u1ebfn tr\u00ecnh\" class=\"wp-image-131400\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-6-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-6-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-6-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-6-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-6-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 2: Ki\u1ec3m tra m\u1ee9c s\u1eed d\u1ee5ng CPU v\u00e0 ti\u1ebfn tr\u00ecnh<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t ti\u1ebfn tr\u00ecnh s\u1eed d\u1ee5ng CPU cao ch\u01b0a ch\u1eafc g\u1eb7p l\u1ed7i. B\u1ea1n c\u1ea7n x\u00e1c \u0111\u1ecbnh \u1ee9ng d\u1ee5ng \u0111ang th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c h\u1ee3p l\u1ec7 hay b\u1ecb k\u1eb9t trong v\u00f2ng l\u1eb7p x\u1eed l\u00fd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i ra, trong top, h\u00e3y ch\u00fa \u00fd \u0111\u1ebfn ch\u1ec9 s\u1ed1 <strong>st<\/strong> <strong>(Steal Time)<\/strong>. \u0110\u00e2y l\u00e0 th\u1eddi gian vCPU ph\u1ea3i ch\u1edd do t\u00e0i nguy\u00ean CPU \u0111\u01b0\u1ee3c h\u1ec7 th\u1ed1ng \u1ea3o h\u00f3a ph\u00e2n ph\u1ed1i cho c\u00f4ng vi\u1ec7c kh\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu Steal Time cao k\u00e9o d\u00e0i, b\u1ea1n n\u00ean ghi nh\u1eadn v\u00e0 trao \u0111\u1ed5i v\u1edbi nh\u00e0 cung c\u1ea5p VPS \u0111\u1ec3 ki\u1ec3m tra h\u1ea1 t\u1ea7ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3 c\u1ea7n x\u00e1c \u0111\u1ecbnh:<\/strong> Ti\u1ebfn tr\u00ecnh n\u00e0o \u0111ang s\u1eed d\u1ee5ng nhi\u1ec1u CPU, m\u1ee9c t\u1ea3i c\u00f3 duy tr\u00ec cao hay kh\u00f4ng v\u00e0 Steal Time c\u00f3 b\u1ea5t th\u01b0\u1eddng hay kh\u00f4ng.<\/p>\n\n\n\n<h3 id=\"B\u01b0\u1edbc_3:_Ki\u1ec3m_tra_RAM_v\u00e0_Swap\"><strong>B\u01b0\u1edbc 3: Ki\u1ec3m tra RAM v\u00e0 Swap<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">RAM kh\u00f4ng \u0111\u1ee7 c\u00f3 th\u1ec3 khi\u1ebfn VPS ph\u1ea3n h\u1ed3i ch\u1eadm, \u0111\u1eb7c bi\u1ec7t khi h\u1ec7 \u0111i\u1ec1u h\u00e0nh ph\u1ea3i li\u00ean t\u1ee5c chuy\u1ec3n d\u1eef li\u1ec7u gi\u1eefa RAM v\u00e0 Swap.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Swap l\u00e0 v\u00f9ng l\u01b0u tr\u1eef \u0111\u01b0\u1ee3c h\u1ec7 \u0111i\u1ec1u h\u00e0nh s\u1eed d\u1ee5ng \u0111\u1ec3 h\u1ed7 tr\u1ee3 qu\u1ea3n l\u00fd b\u1ed9 nh\u1edb khi c\u1ea7n thi\u1ebft. Tuy nhi\u00ean, vi\u1ec7c truy c\u1eadp Swap tr\u00ean \u1ed5 \u0111\u0129a th\u01b0\u1eddng ch\u1eadm h\u01a1n truy c\u1eadp RAM.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ki\u1ec3m tra b\u1ed9 nh\u1edb, ch\u1ea1y:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>free -h<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Trong k\u1ebft qu\u1ea3 hi\u1ec3n th\u1ecb, h\u00e3y ch\u00fa \u00fd:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>total<\/strong><strong>:<\/strong> T\u1ed5ng dung l\u01b0\u1ee3ng RAM.<\/li>\n\n\n\n<li><strong>used<\/strong><strong>:<\/strong> Dung l\u01b0\u1ee3ng RAM \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/li>\n\n\n\n<li><strong>free<\/strong><strong>:<\/strong> Dung l\u01b0\u1ee3ng RAM ho\u00e0n to\u00e0n ch\u01b0a s\u1eed d\u1ee5ng.<\/li>\n\n\n\n<li><strong>available<\/strong><strong>:<\/strong> Dung l\u01b0\u1ee3ng b\u1ed9 nh\u1edb \u01b0\u1edbc t\u00ednh c\u00f3 th\u1ec3 c\u1ea5p ph\u00e1t cho \u1ee9ng d\u1ee5ng m\u00e0 kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng Swap.<\/li>\n\n\n\n<li><strong>Swap<\/strong><strong>:<\/strong> Dung l\u01b0\u1ee3ng Swap hi\u1ec7n c\u00f3 v\u00e0 m\u1ee9c s\u1eed d\u1ee5ng.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-7-1024x549.png\" alt=\"B\u01b0\u1edbc 3: Ki\u1ec3m tra RAM v\u00e0 Swap\" class=\"wp-image-131401\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-7-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-7-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-7-767x411.png 767w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-7-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-7-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 3: Ki\u1ec3m tra RAM v\u00e0 Swap<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>Quan tr\u1ecdng:<\/strong> Ch\u1ec9 s\u1ed1 free th\u1ea5p kh\u00f4ng \u0111\u1ed3ng ngh\u0129a VPS thi\u1ebfu RAM. Linux th\u01b0\u1eddng t\u1eadn d\u1ee5ng b\u1ed9 nh\u1edb nh\u00e0n r\u1ed7i l\u00e0m cache \u0111\u1ec3 t\u0103ng t\u1ed1c truy c\u1eadp d\u1eef li\u1ec7u. V\u00ec v\u1eady, n\u00ean \u01b0u ti\u00ean quan s\u00e1t available.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ki\u1ec3m tra h\u1ec7 th\u1ed1ng c\u00f3 th\u01b0\u1eddng xuy\u00ean ph\u1ea3i chuy\u1ec3n d\u1eef li\u1ec7u gi\u1eefa RAM v\u00e0 Swap hay kh\u00f4ng, ch\u1ea1y:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>vmstat 1 5<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh n\u00e0y l\u1ea5y 5 m\u1eabu, c\u00e1ch nhau 1 gi\u00e2y.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong k\u1ebft qu\u1ea3, ch\u00fa \u00fd hai c\u1ed9t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>si<\/strong><strong>:<\/strong> L\u01b0\u1ee3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chuy\u1ec3n t\u1eeb Swap v\u00e0o RAM.<\/li>\n\n\n\n<li><strong>so<\/strong><strong>:<\/strong> L\u01b0\u1ee3ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c chuy\u1ec3n t\u1eeb RAM sang Swap.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ecf qua d\u00f2ng th\u1ed1ng k\u00ea t\u1ed5ng h\u1ee3p \u0111\u1ea7u ti\u00ean khi \u0111\u00e1nh gi\u00e1 ho\u1ea1t \u0111\u1ed9ng t\u1ee9c th\u1eddi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu <strong>si<\/strong> v\u00e0 <strong>so<\/strong> li\u00ean t\u1ee5c t\u0103ng trong khi RAM kh\u1ea3 d\u1ee5ng r\u1ea5t th\u1ea5p, VPS c\u00f3 th\u1ec3 \u0111ang ch\u1ecbu \u00e1p l\u1ef1c b\u1ed9 nh\u1edb \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-8-1024x549.png\" alt=\"B\u01b0\u1edbc 3: Ki\u1ec3m tra RAM v\u00e0 Swap\" class=\"wp-image-131402\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-8-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-8-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-8-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-8-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-8-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 3: Ki\u1ec3m tra RAM v\u00e0 Swap<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u0169ng n\u00ean ki\u1ec3m tra xem h\u1ec7 \u0111i\u1ec1u h\u00e0nh c\u00f3 t\u1eebng t\u1ef1 \u0111\u1ed9ng d\u1eebng ti\u1ebfn tr\u00ecnh do thi\u1ebfu RAM hay kh\u00f4ng:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo journalctl -k -b --no-pager | grep -Ei 'out of memory|oom|killed process'<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh t\u00ecm ki\u1ebfm c\u00e1c th\u00f4ng b\u00e1o li\u00ean quan \u0111\u1ebfn OOM trong nh\u1eadt k\u00fd kernel c\u1ee7a l\u1ea7n kh\u1edfi \u0111\u1ed9ng hi\u1ec7n t\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu xu\u1ea5t hi\u1ec7n th\u00f4ng b\u00e1o <strong>Out of memory<\/strong> ho\u1eb7c <strong>Killed process<\/strong>, \u0111\u00e2y l\u00e0 d\u1ea5u hi\u1ec7u c\u1ea7n \u0111i\u1ec1u tra th\u00eam t\u00ecnh tr\u1ea1ng thi\u1ebfu b\u1ed9 nh\u1edb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu kh\u00f4ng c\u00f3 k\u1ebft qu\u1ea3, \u0111i\u1ec1u \u0111\u00f3 ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 kh\u1eb3ng \u0111\u1ecbnh VPS ch\u01b0a t\u1eebng x\u1ea3y ra OOM, b\u1edfi nh\u1eadt k\u00fd c\u0169 c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3 c\u1ea7n x\u00e1c \u0111\u1ecbnh:<\/strong> RAM c\u00f2n kh\u1ea3 d\u1ee5ng bao nhi\u00eau, VPS c\u00f3 ph\u1ea3i s\u1eed d\u1ee5ng Swap th\u01b0\u1eddng xuy\u00ean hay t\u1eebng g\u1eb7p l\u1ed7i OOM hay kh\u00f4ng.<\/p>\n\n\n\n<h3 id=\"B\u01b0\u1edbc_4:_Ki\u1ec3m_tra_dung_l\u01b0\u1ee3ng_\u1ed5_c\u1ee9ng\"><strong>B\u01b0\u1edbc 4: Ki\u1ec3m tra dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ed4 c\u1ee9ng g\u1ea7n \u0111\u1ea7y c\u00f3 th\u1ec3 khi\u1ebfn \u1ee9ng d\u1ee5ng kh\u00f4ng th\u1ec3 t\u1ea1o t\u1ec7p m\u1edbi, ghi log ho\u1eb7c l\u01b0u d\u1eef li\u1ec7u v\u00e0o database.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ki\u1ec3m tra dung l\u01b0\u1ee3ng \u0111ang s\u1eed d\u1ee5ng, ch\u1ea1y:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df -h<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh hi\u1ec3n th\u1ecb dung l\u01b0\u1ee3ng c\u00e1c ph\u00e2n v\u00f9ng c\u00f9ng t\u1ef7 l\u1ec7 s\u1eed d\u1ee5ng trong c\u1ed9t Use%.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, n\u1ebfu ph\u00e2n v\u00f9ng ch\u1ee9a h\u1ec7 \u0111i\u1ec1u h\u00e0nh \u0111\u00e3 s\u1eed d\u1ee5ng kho\u1ea3ng 95% dung l\u01b0\u1ee3ng, b\u1ea1n n\u00ean ki\u1ec3m tra nh\u1eefng th\u01b0 m\u1ee5c \u0111ang chi\u1ebfm nhi\u1ec1u kh\u00f4ng gian v\u00e0 t\u00ecm c\u00e1ch gi\u1ea3i ph\u00f3ng dung l\u01b0\u1ee3ng ph\u00f9 h\u1ee3p.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-9-1024x549.png\" alt=\"B\u01b0\u1edbc 4: Ki\u1ec3m tra dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng\" class=\"wp-image-131403\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-9-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-9-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-9-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-9-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-9-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 4: Ki\u1ec3m tra dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp t\u1ee5c ki\u1ec3m tra s\u1ed1 l\u01b0\u1ee3ng inode:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df -i<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Inode l\u00e0 c\u1ea5u tr\u00fac \u0111\u01b0\u1ee3c h\u1ec7 th\u1ed1ng t\u1ec7p s\u1eed d\u1ee5ng \u0111\u1ec3 qu\u1ea3n l\u00fd th\u00f4ng tin c\u1ee7a t\u1ec7p v\u00e0 th\u01b0 m\u1ee5c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t VPS c\u00f3 th\u1ec3 v\u1eabn c\u00f2n dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef nh\u01b0ng kh\u00f4ng th\u1ec3 t\u1ea1o th\u00eam t\u1ec7p n\u1ebfu s\u1ed1 inode \u0111\u00e3 s\u1eed d\u1ee5ng h\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu mu\u1ed1n ki\u1ec3m tra dung l\u01b0\u1ee3ng trong th\u01b0 m\u1ee5c \/var, ch\u1ea1y:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo du -xhd1 \/var 2&gt;\/dev\/null | sort -h<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh s\u1ebd li\u1ec7t k\u00ea dung l\u01b0\u1ee3ng c\u1ee7a nh\u1eefng th\u01b0 m\u1ee5c con trong \/var thu\u1ed9c c\u00f9ng h\u1ec7 th\u1ed1ng t\u1ec7p, gi\u00fap x\u00e1c \u0111\u1ecbnh n\u01a1i \u0111ang chi\u1ebfm nhi\u1ec1u dung l\u01b0\u1ee3ng.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-10-1024x549.png\" alt=\"B\u01b0\u1edbc 4: Ki\u1ec3m tra dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng\" class=\"wp-image-131404\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-10-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-10-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-10-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-10-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-10-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 4: Ki\u1ec3m tra dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng khu v\u1ef1c th\u01b0\u1eddng c\u1ea7n ki\u1ec3m tra g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\/var\/log<\/strong><strong>:<\/strong> Nh\u1eadt k\u00fd h\u1ec7 th\u1ed1ng v\u00e0 \u1ee9ng d\u1ee5ng.<\/li>\n\n\n\n<li><strong>\/var\/lib\/docker<\/strong><strong>:<\/strong> D\u1eef li\u1ec7u do Docker qu\u1ea3n l\u00fd.<\/li>\n\n\n\n<li>Th\u01b0 m\u1ee5c ch\u1ee9a database.<\/li>\n\n\n\n<li>Th\u01b0 m\u1ee5c l\u01b0u b\u1ea3n sao l\u01b0u.<\/li>\n\n\n\n<li>Th\u01b0 m\u1ee5c ch\u1ee9a t\u1ec7p t\u1ea3i l\u00ean ho\u1eb7c d\u1eef li\u1ec7u t\u1ea1m.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01b0u \u00fd r\u1eb1ng l\u1ec7nh <strong>du<\/strong> c\u00f3 th\u1ec3 m\u1ea5t th\u1eddi gian v\u00e0 t\u1ea1o th\u00eam ho\u1ea1t \u0111\u1ed9ng \u0111\u1ecdc \u0111\u0129a tr\u00ean m\u00e1y ch\u1ee7 c\u00f3 nhi\u1ec1u d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Kh\u00f4ng x\u00f3a tr\u1ef1c ti\u1ebfp d\u1eef li\u1ec7u trong c\u00e1c th\u01b0 m\u1ee5c h\u1ec7 th\u1ed1ng ho\u1eb7c database khi ch\u01b0a x\u00e1c \u0111\u1ecbnh r\u00f5 ch\u1ee9c n\u0103ng c\u1ee7a t\u1eebng t\u1ec7p.<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3 c\u1ea7n x\u00e1c \u0111\u1ecbnh:<\/strong> Ph\u00e2n v\u00f9ng n\u00e0o g\u1ea7n \u0111\u1ea7y v\u00e0 nh\u1eefng th\u01b0 m\u1ee5c n\u00e0o \u0111ang s\u1eed d\u1ee5ng nhi\u1ec1u dung l\u01b0\u1ee3ng.<\/p>\n\n\n\n<h3 id=\"B\u01b0\u1edbc_5:_Ki\u1ec3m_tra_hi\u1ec7u_su\u1ea5t_\u0111\u1ecdc\/ghi_\u1ed5_\u0111\u0129a\"><strong>B\u01b0\u1edbc 5: Ki\u1ec3m tra hi\u1ec7u su\u1ea5t \u0111\u1ecdc\/ghi \u1ed5 \u0111\u0129a<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ngay c\u1ea3 khi \u1ed5 c\u1ee9ng c\u00f2n nhi\u1ec1u dung l\u01b0\u1ee3ng, VPS v\u1eabn c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng ch\u1eadm do t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi ho\u1eb7c th\u1eddi gian ph\u1ea3n h\u1ed3i c\u1ee7a h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ki\u1ec3m tra, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 iostat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean Ubuntu\/Debian, c\u00e0i \u0111\u1eb7t g\u00f3i sysstat n\u1ebfu ch\u01b0a c\u00f3:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo apt update\n\nsudo apt install -y sysstat<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Sau \u0111\u00f3 ch\u1ea1y:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>iostat -xz 1 3<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh thu th\u1eadp ba b\u00e1o c\u00e1o, c\u00e1ch nhau m\u1ed9t gi\u00e2y. Khi \u0111\u00e1nh gi\u00e1 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7n t\u1ea1i, n\u00ean quan s\u00e1t c\u00e1c b\u00e1o c\u00e1o t\u1eeb l\u1ea7n th\u1ee9 hai.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-11-1024x549.png\" alt=\"B\u01b0\u1edbc 5: Ki\u1ec3m tra hi\u1ec7u su\u1ea5t \u0111\u1ecdc\/ghi \u1ed5 \u0111\u0129a\" class=\"wp-image-131405\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-11-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-11-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-11-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-11-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-11-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 5: Ki\u1ec3m tra hi\u1ec7u su\u1ea5t \u0111\u1ecdc\/ghi \u1ed5 \u0111\u0129a<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 ch\u1ec9 s\u1ed1 quan tr\u1ecdng:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Ch\u1ec9 s\u1ed1<\/strong><\/td><td><strong>\u00dd ngh\u0129a<\/strong><\/td><\/tr><tr><td>r\/s<\/td><td>S\u1ed1 y\u00eau c\u1ea7u \u0111\u1ecdc m\u1ed7i gi\u00e2y<\/td><\/tr><tr><td>w\/s<\/td><td>S\u1ed1 y\u00eau c\u1ea7u ghi m\u1ed7i gi\u00e2y<\/td><\/tr><tr><td>await<\/td><td>Th\u1eddi gian trung b\u00ecnh x\u1eed l\u00fd y\u00eau c\u1ea7u I\/O, t\u00ednh b\u1eb1ng mili gi\u00e2y<\/td><\/tr><tr><td>r_await<\/td><td>Th\u1eddi gian trung b\u00ecnh cho y\u00eau c\u1ea7u \u0111\u1ecdc<\/td><\/tr><tr><td>w_await<\/td><td>Th\u1eddi gian trung b\u00ecnh cho y\u00eau c\u1ea7u ghi<\/td><\/tr><tr><td>%util<\/td><td>T\u1ef7 l\u1ec7 th\u1eddi gian thi\u1ebft b\u1ecb c\u00f3 y\u00eau c\u1ea7u I\/O \u0111\u01b0\u1ee3c x\u1eed l\u00fd<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu await t\u0103ng cao k\u00e9o d\u00e0i c\u00f9ng v\u1edbi t\u00ecnh tr\u1ea1ng \u1ee9ng d\u1ee5ng ph\u1ea3n h\u1ed3i ch\u1eadm, b\u1ea1n c\u1ea7n ki\u1ec3m tra nh\u1eefng ti\u1ebfn tr\u00ecnh \u0111ang t\u1ea1o ra nhi\u1ec1u y\u00eau c\u1ea7u \u0111\u1ecdc\/ghi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ri\u00eang ch\u1ec9 s\u1ed1 %util c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 th\u1eadn tr\u1ecdng. V\u1edbi SSD, NVMe v\u00e0 h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef h\u1ed7 tr\u1ee3 x\u1eed l\u00fd nhi\u1ec1u y\u00eau c\u1ea7u song song, %util g\u1ea7n 100% kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 k\u1ebft lu\u1eadn \u1ed5 \u0111\u0129a \u0111\u00e3 \u0111\u1ea1t gi\u1edbi h\u1ea1n hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n n\u00ean k\u1ebft h\u1ee3p await, l\u01b0u l\u01b0\u1ee3ng I\/O, m\u1ee9c t\u1ea3i v\u00e0 t\u00ecnh tr\u1ea1ng th\u1ef1c t\u1ebf c\u1ee7a \u1ee9ng d\u1ee5ng \u0111\u1ec3 \u0111\u01b0a ra nh\u1eadn \u0111\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3 c\u1ea7n x\u00e1c \u0111\u1ecbnh:<\/strong> VPS c\u00f3 g\u1eb7p t\u00ecnh tr\u1ea1ng \u0111\u1ecdc\/ghi ch\u1eadm ho\u1eb7c th\u1eddi gian ch\u1edd I\/O cao b\u1ea5t th\u01b0\u1eddng hay kh\u00f4ng.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-12-1024x549.png\" alt=\"B\u01b0\u1edbc 5: Ki\u1ec3m tra hi\u1ec7u su\u1ea5t \u0111\u1ecdc\/ghi \u1ed5 \u0111\u0129a\" class=\"wp-image-131406\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-12-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-12-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-12-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-12-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-12-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 5: Ki\u1ec3m tra hi\u1ec7u su\u1ea5t \u0111\u1ecdc\/ghi \u1ed5 \u0111\u0129a<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"B\u01b0\u1edbc_6:_Ki\u1ec3m_tra_Docker,_d\u1ecbch_v\u1ee5_v\u00e0_nh\u1eadt_k\u00fd_l\u1ed7i\"><strong>B\u01b0\u1edbc 6: Ki\u1ec3m tra Docker, d\u1ecbch v\u1ee5 v\u00e0 nh\u1eadt k\u00fd l\u1ed7i<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu VPS \u0111ang ch\u1ea1y Docker, n8n, OpenClaw, Hermes Agent ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c, b\u1ea1n c\u1ea7n x\u00e1c \u0111\u1ecbnh d\u1ecbch v\u1ee5 n\u00e0o \u0111ang ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean ho\u1eb7c ph\u00e1t sinh l\u1ed7i.<\/p>\n\n\n\n<h4 id=\"Tr\u01b0\u1eddng_h\u1ee3p_1:_VPS_s\u1eed_d\u1ee5ng_Docker\"><strong>Tr\u01b0\u1eddng h\u1ee3p 1: VPS s\u1eed d\u1ee5ng Docker<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra danh s\u00e1ch container:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker ps<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp t\u1ee5c ki\u1ec3m tra t\u00e0i nguy\u00ean:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker stats --no-stream<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">K\u1ebft qu\u1ea3 hi\u1ec3n th\u1ecb m\u1ee9c s\u1eed d\u1ee5ng CPU, RAM, m\u1ea1ng v\u00e0 ho\u1ea1t \u0111\u1ed9ng I\/O c\u1ee7a c\u00e1c container \u0111ang ch\u1ea1y.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, b\u1ea1n c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n m\u1ed9t container n8n s\u1eed d\u1ee5ng CPU cao do \u0111ang x\u1eed l\u00fd nhi\u1ec1u workflow, ho\u1eb7c m\u1ed9t \u1ee9ng d\u1ee5ng AI Agent ti\u00eau th\u1ee5 RAM l\u1edbn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu mu\u1ed1n ki\u1ec3m tra nh\u1eadt k\u00fd c\u1ee7a m\u1ed9t container, ch\u1ea1y:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker logs --tail 50 TEN_CONTAINER<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Thay <strong>TEN_CONTAINER<\/strong> b\u1eb1ng t\u00ean container th\u1ef1c t\u1ebf l\u1ea5y t\u1eeb k\u1ebft qu\u1ea3 docker ps.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-13-1024x549.png\" alt=\"Tr\u01b0\u1eddng h\u1ee3p 1: VPS s\u1eed d\u1ee5ng Docker\" class=\"wp-image-131407\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-13-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-13-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-13-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-13-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-13-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong><strong>Tr\u01b0\u1eddng h\u1ee3p 1: VPS s\u1eed d\u1ee5ng Docker<\/strong><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu nghi ng\u1edd Docker \u0111ang chi\u1ebfm nhi\u1ec1u dung l\u01b0\u1ee3ng \u1ed5 c\u1ee9ng, s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">sudo docker system df<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh n\u00e0y cho bi\u1ebft dung l\u01b0\u1ee3ng li\u00ean quan \u0111\u1ebfn image, container v\u00e0 volume do Docker qu\u1ea3n l\u00fd.<\/p>\n\n\n\n<h4 id=\"Tr\u01b0\u1eddng_h\u1ee3p_2:_VPS_kh\u00f4ng_s\u1eed_d\u1ee5ng_Docker\"><strong>Tr\u01b0\u1eddng h\u1ee3p 2: VPS kh\u00f4ng s\u1eed d\u1ee5ng Docker<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra nh\u1eefng d\u1ecbch v\u1ee5 b\u1ecb l\u1ed7i b\u1eb1ng l\u1ec7nh:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>systemctl --failed<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Ki\u1ec3m tra nh\u1eadt k\u00fd l\u1ed7i c\u1ee7a l\u1ea7n kh\u1edfi \u0111\u1ed9ng hi\u1ec7n t\u1ea1i:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo journalctl -p err -b --no-pager -n 50<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu VPS s\u1eed d\u1ee5ng Nginx, c\u00f3 th\u1ec3 ki\u1ec3m tra tr\u1ea1ng th\u00e1i d\u1ecbch v\u1ee5:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo systemctl status nginx<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">T\u01b0\u01a1ng t\u1ef1, b\u1ea1n c\u00f3 th\u1ec3 thay <strong>nginx<\/strong> b\u1eb1ng t\u00ean d\u1ecbch v\u1ee5 kh\u00e1c \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-14-1024x549.png\" alt=\"Tr\u01b0\u1eddng h\u1ee3p 2: VPS kh\u00f4ng s\u1eed d\u1ee5ng Docker\" class=\"wp-image-131408\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-14-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-14-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-14-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-14-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-14-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>Tr\u01b0\u1eddng h\u1ee3p 2: VPS kh\u00f4ng s\u1eed d\u1ee5ng Docker<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u01b0u \u00fd:<\/strong> C\u00e1c nh\u1eadt k\u00fd c\u00f3 th\u1ec3 ch\u1ee9a th\u00f4ng tin nh\u1ea1y c\u1ea3m, \u0111\u01b0\u1eddng d\u1eabn n\u1ed9i b\u1ed9 ho\u1eb7c d\u1eef li\u1ec7u c\u1ea5u h\u00ecnh. B\u1ea1n n\u00ean che nh\u1eefng th\u00f4ng tin n\u00e0y tr\u01b0\u1edbc khi chia s\u1ebb cho b\u00ean kh\u00e1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3 c\u1ea7n x\u00e1c \u0111\u1ecbnh:<\/strong> \u1ee8ng d\u1ee5ng n\u00e0o \u0111ang qu\u00e1 t\u1ea3i, d\u1ecbch v\u1ee5 n\u00e0o g\u1eb7p l\u1ed7i v\u00e0 c\u00f3 d\u1ea5u hi\u1ec7u c\u1ea7n ki\u1ec3m tra s\u00e2u h\u01a1n hay kh\u00f4ng.<\/p>\n\n\n\n<h3 id=\"B\u01b0\u1edbc_7:_Ki\u1ec3m_tra_k\u1ebft_n\u1ed1i_m\u1ea1ng_v\u00e0_th\u1eddi_gian_ph\u1ea3n_h\u1ed3i\"><strong>B\u01b0\u1edbc 7: Ki\u1ec3m tra k\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 th\u1eddi gian ph\u1ea3n h\u1ed3i<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu CPU, RAM v\u00e0 \u1ed5 c\u1ee9ng \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng nh\u01b0ng VPS v\u1eabn ch\u1eadm, b\u1ea1n n\u00ean ki\u1ec3m tra th\u00eam k\u1ebft n\u1ed1i m\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc ti\u00ean, ch\u1ea1y l\u1ec7nh:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ping -c 4 1.1.1.1<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh g\u1eedi b\u1ed1n y\u00eau c\u1ea7u ICMP \u0111\u1ebfn \u0111\u1ecba ch\u1ec9 \u0111\u00edch v\u00e0 hi\u1ec3n th\u1ecb th\u1eddi gian ph\u1ea3n h\u1ed3i c\u00f9ng t\u1ef7 l\u1ec7 m\u1ea5t g\u00f3i.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-15-1024x549.png\" alt=\"B\u01b0\u1edbc 7: Ki\u1ec3m tra k\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 th\u1eddi gian ph\u1ea3n h\u1ed3i\" class=\"wp-image-131409\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-15-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-15-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-15-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-15-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-15-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong><strong>B\u01b0\u1edbc 7: Ki\u1ec3m tra k\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 th\u1eddi gian ph\u1ea3n h\u1ed3i<\/strong><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u1ea7n quan s\u00e1t:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u1eddi gian ph\u1ea3n h\u1ed3i c\u00f3 t\u0103ng cao b\u1ea5t th\u01b0\u1eddng hay kh\u00f4ng.<\/li>\n\n\n\n<li>C\u00f3 xu\u1ea5t hi\u1ec7n t\u00ecnh tr\u1ea1ng m\u1ea5t g\u00f3i hay kh\u00f4ng.<\/li>\n\n\n\n<li>K\u1ebft qu\u1ea3 c\u00f3 \u1ed5n \u0111\u1ecbnh gi\u1eefa c\u00e1c l\u1ea7n ki\u1ec3m tra hay kh\u00f4ng.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng m\u1ea1ng h\u1ea1n ch\u1ebf ICMP, v\u00ec v\u1eady k\u1ebft qu\u1ea3 Ping kh\u00f4ng th\u00e0nh c\u00f4ng ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 k\u1ebft lu\u1eadn k\u1ebft n\u1ed1i VPS g\u1eb7p s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ti\u1ebfp theo, ki\u1ec3m tra kh\u1ea3 n\u0103ng truy c\u1eadp HTTPS b\u1eb1ng l\u1ec7nh:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>curl -I --connect-timeout 5 https:\/\/example.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh th\u1ef1c hi\u1ec7n m\u1ed9t y\u00eau c\u1ea7u HTTP HEAD \u0111\u1ebfn website th\u1eed nghi\u1ec7m. N\u1ebfu nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i, VPS \u0111\u00e3 c\u00f3 th\u1ec3 k\u1ebft n\u1ed1i \u0111\u1ebfn \u0111\u00edch qua HTTPS t\u1ea1i th\u1eddi \u0111i\u1ec3m ki\u1ec3m tra.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 \u0111o th\u1eddi gian ph\u1ea3n h\u1ed3i c\u1ee7a m\u1ed9t website, s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>curl -sS -o \/dev\/null -w 'HTTP %{http_code} | Tong: %{time_total}s\\n' https:\/\/example.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Thay <strong>https:\/\/example.com<\/strong> b\u1eb1ng t\u00ean mi\u1ec1n website c\u1ea7n ki\u1ec3m tra.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-16-1024x549.png\" alt=\"B\u01b0\u1edbc 7: Ki\u1ec3m tra k\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 th\u1eddi gian ph\u1ea3n h\u1ed3i\" class=\"wp-image-131410\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-16-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-16-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-16-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-16-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-16-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>B\u01b0\u1edbc 7: Ki\u1ec3m tra k\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 th\u1eddi gian ph\u1ea3n h\u1ed3i<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ec9 s\u1ed1 <strong><\/strong><strong>time_total<\/strong> th\u1ec3 hi\u1ec7n t\u1ed5ng th\u1eddi gian th\u1ef1c hi\u1ec7n y\u00eau c\u1ea7u HTTP, kh\u00f4ng ph\u1ea3i ph\u00e9p \u0111o ri\u00eang t\u1ed1c \u0111\u1ed9 m\u1ea1ng. K\u1ebft qu\u1ea3 c\u00f2n ch\u1ecbu \u1ea3nh h\u01b0\u1edfng t\u1eeb DNS, TLS, m\u00e1y ch\u1ee7 \u0111\u00edch v\u00e0 th\u1eddi gian x\u1eed l\u00fd \u1ee9ng d\u1ee5ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu s\u1eed d\u1ee5ng Cloudflare ho\u1eb7c CDN, ph\u1ea3n h\u1ed3i t\u1eeb t\u00ean mi\u1ec1n c\u00f4ng khai c\u0169ng c\u00f3 th\u1ec3 \u0111i qua m\u00e1y ch\u1ee7 trung gian thay v\u00ec k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp \u0111\u1ebfn VPS.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i ra, n\u00ean th\u1eed k\u1ebft n\u1ed1i t\u1eeb m\u1ed9t m\u1ea1ng Internet kh\u00e1c \u0111\u1ec3 \u0111\u1ed1i chi\u1ebfu. N\u1ebfu ch\u1ec9 m\u1ed9t m\u1ea1ng g\u1eb7p v\u1ea5n \u0111\u1ec1, nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 n\u1eb1m tr\u00ean tuy\u1ebfn k\u1ebft n\u1ed1i thay v\u00ec b\u00ean trong VPS.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u1ebft qu\u1ea3 c\u1ea7n x\u00e1c \u0111\u1ecbnh:<\/strong> T\u00ecnh tr\u1ea1ng ch\u1eadm b\u1eaft ngu\u1ed3n t\u1eeb x\u1eed l\u00fd tr\u00ean m\u00e1y ch\u1ee7, k\u1ebft n\u1ed1i \u0111\u1ebfn website hay \u0111\u01b0\u1eddng truy\u1ec1n gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 VPS.<\/p>\n\n\n\n<h2 id=\"C\u00e1ch_kh\u1eafc_ph\u1ee5c_VPS_b\u1ecb_ch\u1eadm_theo_t\u1eebng_nguy\u00ean_nh\u00e2n\"><strong>C\u00e1ch kh\u1eafc ph\u1ee5c VPS b\u1ecb ch\u1eadm theo t\u1eebng nguy\u00ean nh\u00e2n<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi ho\u00e0n th\u00e0nh c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra, b\u1ea1n c\u1ea7n l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng \u00e1n kh\u1eafc ph\u1ee5c t\u01b0\u01a1ng \u1ee9ng v\u1edbi nguy\u00ean nh\u00e2n \u0111\u00e3 x\u00e1c \u0111\u1ecbnh. Kh\u00f4ng n\u00ean \u00e1p d\u1ee5ng \u0111\u1ed3ng th\u1eddi nhi\u1ec1u c\u00e1ch t\u1ed1i \u01b0u khi ch\u01b0a bi\u1ebft t\u00e1c v\u1ee5 n\u00e0o \u0111ang g\u00e2y qu\u00e1 t\u1ea3i.<\/p>\n\n\n\n<h3 id=\"CPU_qu\u00e1_t\u1ea3i_do_ti\u1ebfn_tr\u00ecnh_ho\u1eb7c_\u1ee9ng_d\u1ee5ng\"><strong>CPU qu\u00e1 t\u1ea3i do ti\u1ebfn tr\u00ecnh ho\u1eb7c \u1ee9ng d\u1ee5ng<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u1ed9t ti\u1ebfn tr\u00ecnh li\u00ean t\u1ee5c s\u1eed d\u1ee5ng ph\u1ea7n l\u1edbn t\u00e0i nguy\u00ean CPU, tr\u01b0\u1edbc h\u1ebft h\u00e3y x\u00e1c \u0111\u1ecbnh t\u00ean \u1ee9ng d\u1ee5ng v\u00e0 c\u00f4ng vi\u1ec7c \u0111ang \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ea1i l\u1ec7nh:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>top<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Sau \u0111\u00f3 th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng \u00e1n ph\u00f9 h\u1ee3p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng t\u00e1c v\u1ee5 ch\u1ea1y \u0111\u1ed3ng th\u1eddi.<\/li>\n\n\n\n<li>Ki\u1ec3m tra c\u00e1c t\u00e1c v\u1ee5 t\u1ef1 \u0111\u1ed9ng nh\u01b0 Cron Job, sao l\u01b0u v\u00e0 qu\u00e9t d\u1eef li\u1ec7u.<\/li>\n\n\n\n<li>T\u1ed1i \u01b0u m\u00e3 ngu\u1ed3n ho\u1eb7c truy v\u1ea5n database n\u1ebfu \u1ee9ng d\u1ee5ng x\u1eed l\u00fd qu\u00e1 l\u00e2u.<\/li>\n\n\n\n<li>\u0110i\u1ec1u ch\u1ec9nh l\u1ecbch ch\u1ea1y nh\u1eefng t\u00e1c v\u1ee5 ti\u00eau t\u1ed1n nhi\u1ec1u CPU.<\/li>\n\n\n\n<li>Ki\u1ec3m tra ti\u1ebfn tr\u00ecnh b\u1ea5t th\u01b0\u1eddng ho\u1eb7c kh\u00f4ng r\u00f5 ngu\u1ed3n g\u1ed1c.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-17-1-1024x549.png\" alt=\"CPU qu\u00e1 t\u1ea3i do ti\u1ebfn tr\u00ecnh ho\u1eb7c \u1ee9ng d\u1ee5ng\" class=\"wp-image-131414\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-17-1-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-17-1-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-17-1-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-17-1-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-17-1-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>CPU qu\u00e1 t\u1ea3i do ti\u1ebfn tr\u00ecnh ho\u1eb7c \u1ee9ng d\u1ee5ng<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu nguy\u00ean nh\u00e2n \u0111\u1ebfn t\u1eeb m\u1ed9t d\u1ecbch v\u1ee5 c\u1ee5 th\u1ec3, b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra tr\u1ea1ng th\u00e1i v\u00e0 nh\u1eadt k\u00fd c\u1ee7a d\u1ecbch v\u1ee5 tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5 v\u1edbi Nginx:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo systemctl status nginx<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ec9 kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u1ed9t d\u1ecbch v\u1ee5 khi \u0111\u00e3 x\u00e1c \u0111\u1ecbnh r\u00f5 m\u1ee5c \u0111\u00edch v\u00e0 ch\u1ea5p nh\u1eadn kh\u1ea3 n\u0103ng gi\u00e1n \u0111o\u1ea1n t\u1ea1m th\u1eddi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1eb7c bi\u1ec7t, kh\u00f4ng n\u00ean s\u1eed d\u1ee5ng l\u1ec7nh kill -9 ch\u1ec9 v\u00ec th\u1ea5y m\u1ed9t ti\u1ebfn tr\u00ecnh \u0111ang ti\u00eau th\u1ee5 CPU cao. Vi\u1ec7c d\u1eebng c\u01b0\u1ee1ng b\u1ee9c database ho\u1eb7c \u1ee9ng d\u1ee5ng quan tr\u1ecdng c\u00f3 th\u1ec3 khi\u1ebfn d\u1eef li\u1ec7u \u0111ang x\u1eed l\u00fd b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu CPU th\u01b0\u1eddng xuy\u00ean qu\u00e1 t\u1ea3i trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng b\u00ecnh th\u01b0\u1eddng, vi\u1ec7c n\u00e2ng c\u1ea5p s\u1ed1 l\u01b0\u1ee3ng vCPU c\u00f3 th\u1ec3 c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<h3 id=\"RAM_kh\u00f4ng_\u0111\u1ee7_ho\u1eb7c_s\u1eed_d\u1ee5ng_Swap_qu\u00e1_nhi\u1ec1u\"><strong>RAM kh\u00f4ng \u0111\u1ee7 ho\u1eb7c s\u1eed d\u1ee5ng Swap qu\u00e1 nhi\u1ec1u<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi RAM kh\u1ea3 d\u1ee5ng li\u00ean t\u1ee5c \u1edf m\u1ee9c th\u1ea5p v\u00e0 h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng Swap th\u01b0\u1eddng xuy\u00ean, b\u1ea1n n\u00ean \u01b0u ti\u00ean gi\u1ea3m nhu c\u1ea7u b\u1ed9 nh\u1edb c\u1ee7a nh\u1eefng \u1ee9ng d\u1ee5ng kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c ph\u01b0\u01a1ng \u00e1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u1eebng nh\u1eefng \u1ee9ng d\u1ee5ng th\u1ef1c s\u1ef1 kh\u00f4ng c\u00f2n s\u1eed d\u1ee5ng, sau khi \u0111\u00e3 x\u00e1c nh\u1eadn vai tr\u00f2.<\/li>\n\n\n\n<li>Gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng worker ho\u1eb7c t\u00e1c v\u1ee5 ch\u1ea1y \u0111\u1ed3ng th\u1eddi.<\/li>\n\n\n\n<li>Ki\u1ec3m tra c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 m\u1ee9c s\u1eed d\u1ee5ng RAM t\u0103ng d\u1ea7n b\u1ea5t th\u01b0\u1eddng.<\/li>\n\n\n\n<li>\u0110i\u1ec1u ch\u1ec9nh gi\u1edbi h\u1ea1n b\u1ed9 nh\u1edb ph\u00f9 h\u1ee3p cho container Docker.<\/li>\n\n\n\n<li>N\u00e2ng c\u1ea5p RAM n\u1ebfu nhu c\u1ea7u th\u1ef1c t\u1ebf th\u01b0\u1eddng xuy\u00ean v\u01b0\u1ee3t qu\u00e1 c\u1ea5u h\u00ecnh hi\u1ec7n t\u1ea1i.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi VPS \u0111ang ch\u1ea1y AI Agent, m\u1ee9c s\u1eed d\u1ee5ng RAM c\u00f3 th\u1ec3 t\u0103ng do nhi\u1ec1u phi\u00ean x\u1eed l\u00fd, c\u00f4ng c\u1ee5 t\u00edch h\u1ee3p ho\u1eb7c ch\u01b0\u01a1ng tr\u00ecnh b\u1ed5 tr\u1ee3 ho\u1ea1t \u0111\u1ed9ng c\u00f9ng l\u00fac.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n n\u00ean ki\u1ec3m tra \u1ee9ng d\u1ee5ng \u0111ang ti\u00eau th\u1ee5 b\u1ed9 nh\u1edb tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh thay \u0111\u1ed5i c\u1ea5u h\u00ecnh.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-18-1-1024x549.png\" alt=\"RAM kh\u00f4ng \u0111\u1ee7 ho\u1eb7c s\u1eed d\u1ee5ng Swap qu\u00e1 nhi\u1ec1u\" class=\"wp-image-131415\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-18-1-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-18-1-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-18-1-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-18-1-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-18-1-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>RAM kh\u00f4ng \u0111\u1ee7 ho\u1eb7c s\u1eed d\u1ee5ng Swap qu\u00e1 nhi\u1ec1u<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f3 n\u00ean t\u0103ng Swap \u0111\u1ec3 kh\u1eafc ph\u1ee5c VPS b\u1ecb ch\u1eadm?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Swap c\u00f3 th\u1ec3 gi\u00fap h\u1ec7 th\u1ed1ng c\u00f3 th\u00eam v\u00f9ng b\u1ed9 nh\u1edb d\u1ef1 ph\u00f2ng trong m\u1ed9t s\u1ed1 t\u00ecnh hu\u1ed1ng, nh\u01b0ng kh\u00f4ng thay th\u1ebf \u0111\u01b0\u1ee3c RAM v\u1eadt l\u00fd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu VPS li\u00ean t\u1ee5c ph\u1ea3i chuy\u1ec3n d\u1eef li\u1ec7u gi\u1eefa RAM v\u00e0 Swap, hi\u1ec7u su\u1ea5t c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3. V\u00ec v\u1eady, t\u0103ng Swap kh\u00f4ng ph\u1ea3i gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p cho m\u1ecdi tr\u01b0\u1eddng h\u1ee3p thi\u1ebfu RAM.<\/p>\n\n\n\n<h3 id=\"\u1ed4_c\u1ee9ng_\u0111\u1ea7y_ho\u1eb7c_t\u1ed1c_\u0111\u1ed9_\u0111\u1ecdc\/ghi_th\u1ea5p\"><strong>\u1ed4 c\u1ee9ng \u0111\u1ea7y ho\u1eb7c t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi th\u1ea5p<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu ph\u00e2n v\u00f9ng g\u1ea7n h\u1ebft dung l\u01b0\u1ee3ng, h\u00e3y x\u00e1c \u0111\u1ecbnh nh\u1eefng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 d\u1ecdn d\u1eb9p m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u1ee9ng d\u1ee5ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi Ubuntu\/Debian, m\u1ed9t thao t\u00e1c t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u01a1n gi\u1ea3n l\u00e0 d\u1ecdn b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a tr\u00ecnh qu\u1ea3n l\u00fd g\u00f3i APT:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo apt-get clean<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh x\u00f3a nh\u1eefng t\u1ec7p g\u00f3i \u0111\u00e3 t\u1ea3i v\u1ec1 trong b\u1ed9 nh\u1edb \u0111\u1ec7m APT, kh\u00f4ng g\u1ee1 b\u1ecf c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh \u0111ang \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 ki\u1ec3m tra dung l\u01b0\u1ee3ng nh\u1eadt k\u00fd h\u1ec7 th\u1ed1ng:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo journalctl --disk-usage<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu nh\u1eadt k\u00fd chi\u1ebfm nhi\u1ec1u dung l\u01b0\u1ee3ng v\u00e0 ch\u00ednh s\u00e1ch l\u01b0u tr\u1eef cho ph\u00e9p x\u00f3a c\u00e1c b\u1ea3n c\u0169, c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo journalctl --vacuum-time=7d<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ec7nh d\u1ecdn nh\u1eefng t\u1ec7p nh\u1eadt k\u00fd \u0111\u00e3 l\u01b0u tr\u1eef c\u00f3 tu\u1ed5i \u0111\u1eddi v\u01b0\u1ee3t qu\u00e1 7 ng\u00e0y. Nh\u1eadt k\u00fd \u0111ang ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00e1c nh\u1eadt k\u00fd kh\u00e1c ngo\u00e0i systemd journal kh\u00f4ng b\u1ecb x\u1eed l\u00fd theo c\u00e1ch n\u00e0y.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-19-1024x549.png\" alt=\"\u1ed4 c\u1ee9ng \u0111\u1ea7y ho\u1eb7c t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi th\u1ea5p\" class=\"wp-image-131416\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-19-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-19-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-19-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-19-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-19-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>\u1ed4 c\u1ee9ng \u0111\u1ea7y ho\u1eb7c t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi th\u1ea5p<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>Ch\u1ec9 ch\u1ea1y l\u1ec7nh sau khi x\u00e1c nh\u1eadn nh\u1eefng nh\u1eadt k\u00fd c\u0169 kh\u00f4ng c\u00f2n c\u1ea7n thi\u1ebft cho c\u00f4ng vi\u1ec7c ki\u1ec3m tra s\u1ef1 c\u1ed1, b\u1ea3o m\u1eadt ho\u1eb7c l\u01b0u tr\u1eef theo quy \u0111\u1ecbnh.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi VPS s\u1eed d\u1ee5ng Docker, h\u00e3y ki\u1ec3m tra:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker system df<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu ph\u00e1t hi\u1ec7n c\u00e1c image ho\u1eb7c t\u00e0i nguy\u00ean kh\u00f4ng c\u00f2n s\u1eed d\u1ee5ng, b\u1ea1n c\u00f3 th\u1ec3 l\u00ean k\u1ebf ho\u1ea1ch d\u1ecdn d\u1eb9p sau khi x\u00e1c nh\u1eadn d\u1eef li\u1ec7u li\u00ean quan \u0111\u00e3 \u0111\u01b0\u1ee3c sao l\u01b0u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng n\u00ean ch\u1ea1y c\u00e1c l\u1ec7nh x\u00f3a h\u00e0ng lo\u1ea1t, ch\u1eb3ng h\u1ea1n docker system prune &#8211;volumes, khi ch\u01b0a hi\u1ec3u r\u00f5 ph\u1ea1m vi d\u1eef li\u1ec7u c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu \u1ed5 c\u1ee9ng v\u1eabn c\u00f2n nhi\u1ec1u dung l\u01b0\u1ee3ng nh\u01b0ng t\u1ed1c \u0111\u1ed9 \u0111\u1ecdc\/ghi th\u1ea5p, h\u00e3y ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng database, t\u00e1c v\u1ee5 sao l\u01b0u v\u00e0 th\u1eddi gian I\/O tr\u01b0\u1edbc khi c\u00e2n nh\u1eafc \u0111\u1ed5i lo\u1ea1i l\u01b0u tr\u1eef ho\u1eb7c li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<h3 id=\"K\u1ebft_n\u1ed1i_m\u1ea1ng_kh\u00f4ng_\u1ed5n_\u0111\u1ecbnh\"><strong>K\u1ebft n\u1ed1i m\u1ea1ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu c\u00e1c ch\u1ec9 s\u1ed1 t\u00e0i nguy\u00ean \u0111\u1ec1u b\u00ecnh th\u01b0\u1eddng, h\u00e3y \u0111\u1ed1i chi\u1ebfu th\u1eddi gian ph\u1ea3n h\u1ed3i t\u1eeb nhi\u1ec1u v\u1ecb tr\u00ed m\u1ea1ng kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c h\u01b0\u1edbng x\u1eed l\u00fd ph\u00f9 h\u1ee3p g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ki\u1ec3m tra k\u1ebft n\u1ed1i Internet t\u1ea1i m\u00e1y t\u00ednh \u0111ang s\u1eed d\u1ee5ng.<\/li>\n\n\n\n<li>Ki\u1ec3m tra DNS v\u00e0 \u0111\u1ecba ch\u1ec9 IP m\u00e0 t\u00ean mi\u1ec1n \u0111ang tr\u1ecf \u0111\u1ebfn.<\/li>\n\n\n\n<li>\u0110\u1ed1i chi\u1ebfu th\u1eddi gian ph\u1ea3n h\u1ed3i t\u1eeb m\u1ea1ng trong n\u01b0\u1edbc v\u00e0 qu\u1ed1c t\u1ebf.<\/li>\n\n\n\n<li>Ki\u1ec3m tra c\u1ea5u h\u00ecnh reverse proxy, CDN ho\u1eb7c t\u01b0\u1eddng l\u1eeda n\u1ebfu c\u00f3.<\/li>\n\n\n\n<li>Li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p khi nghi ng\u1edd \u0111\u01b0\u1eddng truy\u1ec1n ho\u1eb7c h\u1ea1 t\u1ea7ng m\u1ea1ng g\u1eb7p s\u1ef1 c\u1ed1.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1eddng h\u1ee3p website s\u1eed d\u1ee5ng <a href=\"https:\/\/www.cloudflare.com\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.cloudflare.com\/\" rel=\"noreferrer noopener nofollow\">Cloudflare<\/a>, b\u1ea1n c\u0169ng n\u00ean ki\u1ec3m tra hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e1y ch\u1ee7 g\u1ed1c v\u00e0 l\u1edbp CDN ri\u00eang bi\u1ec7t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng n\u00ean v\u1ed9i thay \u0111\u1ed5i DNS, m\u1edf c\u1ed5ng ho\u1eb7c t\u1eaft t\u01b0\u1eddng l\u1eeda khi ch\u01b0a x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n, b\u1edfi c\u00e1c thay \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra v\u1ea5n \u0111\u1ec1 b\u1ea3o m\u1eadt ho\u1eb7c gi\u00e1n \u0111o\u1ea1n truy c\u1eadp.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-20-1024x549.png\" alt=\"K\u1ebft n\u1ed1i m\u1ea1ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh\" class=\"wp-image-131417\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-20-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-20-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-20-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-20-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-20-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>K\u1ebft n\u1ed1i m\u1ea1ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 id=\"\u1ee8ng_d\u1ee5ng,_database_ho\u1eb7c_Docker_qu\u00e1_t\u1ea3i\"><strong>\u1ee8ng d\u1ee5ng, database ho\u1eb7c Docker qu\u00e1 t\u1ea3i<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t VPS c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng v\u1ec1 t\u1ed5ng th\u1ec3 nh\u01b0ng m\u1ed9t \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 v\u1eabn ph\u1ea3n h\u1ed3i r\u1ea5t ch\u1eadm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u1ed1i v\u1edbi website WordPress:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ki\u1ec3m tra plugin ho\u1eb7c theme c\u00f3 ti\u00eau th\u1ee5 nhi\u1ec1u t\u00e0i nguy\u00ean.<\/li>\n\n\n\n<li>Ki\u1ec3m tra t\u00ecnh tr\u1ea1ng truy v\u1ea5n database.<\/li>\n\n\n\n<li>C\u1ea5u h\u00ecnh cache ph\u00f9 h\u1ee3p v\u1edbi website.<\/li>\n\n\n\n<li>Xem x\u00e9t s\u1ed1 l\u01b0\u1ee3ng PHP worker v\u00e0 t\u00e0i nguy\u00ean PHP-FPM.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u1ed1i v\u1edbi n8n:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ki\u1ec3m tra nh\u1eefng workflow \u0111ang ch\u1ea1y.<\/li>\n\n\n\n<li>H\u1ea1n ch\u1ebf c\u00e1c t\u00e1c v\u1ee5 n\u1eb7ng ch\u1ea1y \u0111\u1ed3ng th\u1eddi.<\/li>\n\n\n\n<li>X\u00e1c \u0111\u1ecbnh workflow c\u00f3 v\u00f2ng l\u1eb7p ho\u1eb7c l\u01b0\u1ee3ng d\u1eef li\u1ec7u x\u1eed l\u00fd qu\u00e1 l\u1edbn.<\/li>\n\n\n\n<li>Ki\u1ec3m tra t\u00e0i nguy\u00ean v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a database.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u1ed1i v\u1edbi OpenClaw ho\u1eb7c Hermes Agent:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ki\u1ec3m tra c\u00e1c ti\u1ebfn tr\u00ecnh AI Agent \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/li>\n\n\n\n<li>X\u00e1c \u0111\u1ecbnh c\u00f4ng c\u1ee5, t\u00e1c v\u1ee5 t\u1ef1 \u0111\u1ed9ng ho\u1eb7c ti\u1ebfn tr\u00ecnh ph\u1ee5 \u0111ang s\u1eed d\u1ee5ng nhi\u1ec1u t\u00e0i nguy\u00ean.<\/li>\n\n\n\n<li>\u0110i\u1ec1u ch\u1ec9nh s\u1ed1 l\u01b0\u1ee3ng t\u00e1c v\u1ee5 ch\u1ea1y song song khi c\u1ea7n.<\/li>\n\n\n\n<li>\u0110\u00e1nh gi\u00e1 m\u1ee9c RAM v\u00e0 CPU th\u1ef1c t\u1ebf c\u1ee7a \u1ee9ng d\u1ee5ng.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u1ed1i v\u1edbi Docker:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00f9ng docker stats \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh container ti\u00eau th\u1ee5 t\u00e0i nguy\u00ean.<\/li>\n\n\n\n<li>Ki\u1ec3m tra nh\u1eadt k\u00fd b\u1eb1ng docker logs.<\/li>\n\n\n\n<li>\u0110\u00e1nh gi\u00e1 c\u00e1c gi\u1edbi h\u1ea1n CPU\/RAM \u0111\u00e3 c\u1ea5u h\u00ecnh.<\/li>\n\n\n\n<li>Tr\u00e1nh \u0111\u1eb7t gi\u1edbi h\u1ea1n RAM qu\u00e1 th\u1ea5p khi\u1ebfn \u1ee9ng d\u1ee5ng th\u01b0\u1eddng xuy\u00ean b\u1ecb OOM.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu m\u1ed9t \u1ee9ng d\u1ee5ng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh g\u00e2y s\u1ef1 c\u1ed1 v\u00e0 c\u1ea7n kh\u1edfi \u0111\u1ed9ng l\u1ea1i, b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n thao t\u00e1c c\u00f3 ki\u1ec3m so\u00e1t trong th\u1eddi gian b\u1ea3o tr\u00ec, sau khi b\u1ea3o \u0111\u1ea3m d\u1eef li\u1ec7u quan tr\u1ecdng \u0111\u00e3 \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef an to\u00e0n.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-21-1024x549.png\" alt=\"\u1ee8ng d\u1ee5ng, database ho\u1eb7c Docker qu\u00e1 t\u1ea3i\" class=\"wp-image-131418\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-21-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-21-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-21-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-21-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-21-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>\u1ee8ng d\u1ee5ng, database ho\u1eb7c Docker qu\u00e1 t\u1ea3i<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5, v\u1edbi container Docker:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo docker restart TEN_CONTAINER<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Thay <strong>TEN_CONTAINER<\/strong> b\u1eb1ng t\u00ean container c\u1ea7n kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Kh\u00f4ng kh\u1edfi \u0111\u1ed9ng l\u1ea1i \u0111\u1ed3ng lo\u1ea1t t\u1ea5t c\u1ea3 container \u0111\u1ec3 th\u1eed kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/strong>, \u0111\u1eb7c bi\u1ec7t khi VPS \u0111ang v\u1eadn h\u00e0nh website, database ho\u1eb7c \u1ee9ng d\u1ee5ng ph\u1ee5c v\u1ee5 kh\u00e1ch h\u00e0ng.<\/p>\n\n\n\n<h3 id=\"H\u1ea1_t\u1ea7ng_m\u00e1y_ch\u1ee7_v\u1eadt_l\u00fd_g\u1eb7p_v\u1ea5n_\u0111\u1ec1\"><strong>H\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 v\u1eadt l\u00fd g\u1eb7p v\u1ea5n \u0111\u1ec1<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu t\u00e0i nguy\u00ean b\u00ean trong VPS kh\u00f4ng c\u00f3 d\u1ea5u hi\u1ec7u qu\u00e1 t\u1ea3i nh\u01b0ng hi\u1ec7u su\u1ea5t v\u1eabn th\u1ea5p, b\u1ea1n c\u1ea7n xem x\u00e9t kh\u1ea3 n\u0103ng nguy\u00ean nh\u00e2n n\u1eb1m ngo\u00e0i h\u1ec7 \u0111i\u1ec1u h\u00e0nh kh\u00e1ch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t d\u1ea5u hi\u1ec7u \u0111\u00e1ng ch\u00fa \u00fd l\u00e0 CPU Steal Time t\u0103ng cao trong th\u1eddi gian d\u00e0i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra nhanh b\u1eb1ng:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>vmstat 1 5<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Quan s\u00e1t c\u1ed9t st trong c\u00e1c m\u1eabu \u0111o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Steal Time cho bi\u1ebft t\u1ef7 l\u1ec7 th\u1eddi gian vCPU b\u1ecb h\u1ec7 th\u1ed1ng \u1ea3o h\u00f3a l\u1ea5y kh\u1ecfi l\u1ecbch th\u1ef1c thi. Ch\u1ec9 s\u1ed1 n\u00e0y cao k\u00e9o d\u00e0i c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn t\u00ecnh tr\u1ea1ng c\u1ea1nh tranh t\u00e0i nguy\u00ean CPU tr\u00ean m\u00e1y ch\u1ee7 v\u1eadt l\u00fd.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-22-1024x549.png\" alt=\"H\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 v\u1eadt l\u00fd g\u1eb7p v\u1ea5n \u0111\u1ec1\" class=\"wp-image-131419\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-22-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-22-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-22-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-22-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-22-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>H\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 v\u1eadt l\u00fd g\u1eb7p v\u1ea5n \u0111\u1ec1<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Tuy nhi\u00ean, Steal Time kh\u00f4ng ph\u1ea3i b\u1eb1ng ch\u1ee9ng duy nh\u1ea5t \u0111\u1ec3 k\u1ebft lu\u1eadn h\u1ea1 t\u1ea7ng g\u1eb7p s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu nghi ng\u1edd v\u1ea5n \u0111\u1ec1 \u0111\u1ebfn t\u1eeb nh\u00e0 cung c\u1ea5p, h\u00e3y g\u1eedi y\u00eau c\u1ea7u h\u1ed7 tr\u1ee3 k\u00e8m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u1eddi \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u x\u1ea3y ra t\u00ecnh tr\u1ea1ng ch\u1eadm.<\/li>\n\n\n\n<li>K\u1ebft qu\u1ea3 ki\u1ec3m tra CPU, RAM v\u00e0 Load Average.<\/li>\n\n\n\n<li>Th\u1ed1ng k\u00ea vmstat ho\u1eb7c iostat.<\/li>\n\n\n\n<li>Th\u00f4ng tin v\u1ec1 th\u1eddi gian ph\u1ea3n h\u1ed3i ho\u1eb7c l\u1ed7i k\u1ebft n\u1ed1i.<\/li>\n\n\n\n<li>Nh\u1eefng t\u00e1c v\u1ee5 ho\u1eb7c \u1ee9ng d\u1ee5ng b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c th\u00f4ng tin n\u00e0y gi\u00fap \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u00f3 c\u01a1 s\u1edf ki\u1ec3m tra t\u00e0i nguy\u00ean \u1ea3o h\u00f3a, h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef v\u00e0 \u0111\u01b0\u1eddng truy\u1ec1n.<\/p>\n\n\n\n<h2 id=\"C\u00e1ch_ki\u1ec3m_tra_VPS_\u0111\u00e3_ho\u1ea1t_\u0111\u1ed9ng_\u1ed5n_\u0111\u1ecbnh_tr\u1edf_l\u1ea1i\"><strong>C\u00e1ch ki\u1ec3m tra VPS \u0111\u00e3 ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh tr\u1edf l\u1ea1i<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi \u00e1p d\u1ee5ng bi\u1ec7n ph\u00e1p kh\u1eafc ph\u1ee5c, h\u00e3y ki\u1ec3m tra l\u1ea1i hi\u1ec7u su\u1ea5t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ea5n \u0111\u1ec1 \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft hay ch\u01b0a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c sau:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Ki\u1ec3m tra m\u1ee9c t\u1ea3i h\u1ec7 th\u1ed1ng<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>uptime<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">So s\u00e1nh Load Average v\u1edbi th\u1eddi \u0111i\u1ec3m VPS ho\u1ea1t \u0111\u1ed9ng ch\u1eadm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Ki\u1ec3m tra CPU<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>top<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Xem ti\u1ebfn tr\u00ecnh g\u00e2y qu\u00e1 t\u1ea3i c\u00f2n s\u1eed d\u1ee5ng CPU b\u1ea5t th\u01b0\u1eddng hay kh\u00f4ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Ki\u1ec3m tra RAM<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>free -h<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Quan s\u00e1t dung l\u01b0\u1ee3ng RAM kh\u1ea3 d\u1ee5ng v\u00e0 m\u1ee9c s\u1eed d\u1ee5ng Swap.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Ki\u1ec3m tra dung l\u01b0\u1ee3ng \u1ed5 \u0111\u0129a<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>df -h<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ea3m b\u1ea3o c\u00e1c ph\u00e2n v\u00f9ng quan tr\u1ecdng c\u00f2n \u0111\u1ee7 dung l\u01b0\u1ee3ng ph\u1ee5c v\u1ee5 ho\u1ea1t \u0111\u1ed9ng v\u00e0 t\u0103ng tr\u01b0\u1edfng d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5. Ki\u1ec3m tra hi\u1ec7u su\u1ea5t \u1ee9ng d\u1ee5ng<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Truy c\u1eadp website ho\u1eb7c th\u1ef1c hi\u1ec7n l\u1ea1i t\u00e1c v\u1ee5 t\u1eebng b\u1ecb ch\u1eadm.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u1edf m\u1ed9t trang WordPress t\u1eebng t\u1ea3i l\u00e2u.<\/li>\n\n\n\n<li>Ch\u1ea1y l\u1ea1i m\u1ed9t workflow n8n \u0111\u1ea1i di\u1ec7n.<\/li>\n\n\n\n<li>Ki\u1ec3m tra ph\u1ea3n h\u1ed3i c\u1ee7a AI Agent.<\/li>\n\n\n\n<li>Th\u1ef1c hi\u1ec7n truy v\u1ea5n database t\u1eebng g\u1eb7p v\u1ea5n \u0111\u1ec1.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00ean so s\u00e1nh k\u1ebft qu\u1ea3 tr\u01b0\u1edbc v\u00e0 sau khi kh\u1eafc ph\u1ee5c trong \u0111i\u1ec1u ki\u1ec7n t\u1ea3i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu t\u00ecnh tr\u1ea1ng ch\u1eadm th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n v\u00e0o gi\u1edd cao \u0111i\u1ec3m, b\u1ea1n c\u1ea7n ti\u1ebfp t\u1ee5c theo d\u00f5i trong th\u1eddi gian c\u00f3 l\u01b0u l\u01b0\u1ee3ng th\u1ef1c t\u1ebf thay v\u00ec ch\u1ec9 ki\u1ec3m tra ngay sau khi kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u00e1y ch\u1ee7.<\/p>\n\n\n\n<h2 id=\"Khi_n\u00e0o_n\u00ean_n\u00e2ng_c\u1ea5p_c\u1ea5u_h\u00ecnh_VPS?\"><strong>Khi n\u00e0o n\u00ean n\u00e2ng c\u1ea5p c\u1ea5u h\u00ecnh VPS?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n n\u00ean c\u00e2n nh\u1eafc n\u00e2ng c\u1ea5p VPS khi t\u00e0i nguy\u00ean hi\u1ec7n t\u1ea1i kh\u00f4ng c\u00f2n \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c nhu c\u1ea7u s\u1eed d\u1ee5ng, ngay c\u1ea3 sau khi \u0111\u00e3 ki\u1ec3m tra v\u00e0 t\u1ed1i \u01b0u c\u00e1c \u1ee9ng d\u1ee5ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t s\u1ed1 t\u00ecnh hu\u1ed1ng ph\u00f9 h\u1ee3p g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CPU li\u00ean t\u1ee5c qu\u00e1 t\u1ea3i trong c\u00e1c giai \u0111o\u1ea1n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/li>\n\n\n\n<li>RAM kh\u1ea3 d\u1ee5ng th\u01b0\u1eddng xuy\u00ean xu\u1ed1ng th\u1ea5p v\u00e0 \u1ee9ng d\u1ee5ng ph\u1ea3i s\u1eed d\u1ee5ng Swap nhi\u1ec1u.<\/li>\n\n\n\n<li>Dung l\u01b0\u1ee3ng l\u01b0u tr\u1eef g\u1ea7n \u0111\u1ea1t gi\u1edbi h\u1ea1n, trong khi d\u1eef li\u1ec7u v\u1eabn ti\u1ebfp t\u1ee5c t\u0103ng.<\/li>\n\n\n\n<li>S\u1ed1 l\u01b0\u1ee3ng website, ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c \u1ee9ng d\u1ee5ng \u0111ang v\u1eadn h\u00e0nh ng\u00e0y c\u00e0ng nhi\u1ec1u.<\/li>\n\n\n\n<li>Kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c c\u1ee7a AI Agent, n8n ho\u1eb7c database v\u01b0\u1ee3t qu\u00e1 n\u0103ng l\u1ef1c x\u1eed l\u00fd c\u1ee7a c\u1ea5u h\u00ecnh hi\u1ec7n t\u1ea1i.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1024\" height=\"549\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-23-1024x549.png\" alt=\"Khi n\u00e0o n\u00ean n\u00e2ng c\u1ea5p c\u1ea5u h\u00ecnh VPS?\" class=\"wp-image-131422\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-23-1024x549.png 1024w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-23-300x161.png 300w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-23-768x411.png 768w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-23-1536x823.png 1536w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2026\/10\/vps-bi-cham-23-2048x1097.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>Khi n\u00e0o n\u00ean n\u00e2ng c\u1ea5p c\u1ea5u h\u00ecnh VPS?<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Tr\u01b0\u1edbc khi n\u00e2ng c\u1ea5p, h\u00e3y x\u00e1c \u0111\u1ecbnh t\u00e0i nguy\u00ean \u0111ang thi\u1ebfu \u0111\u1ec3 l\u1ef1a ch\u1ecdn c\u1ea5u h\u00ecnh h\u1ee3p l\u00fd. V\u00ed d\u1ee5, n\u1ebfu nguy\u00ean nh\u00e2n ch\u00ednh l\u00e0 thi\u1ebfu RAM, vi\u1ec7c ch\u1ec9 t\u0103ng s\u1ed1 l\u01b0\u1ee3ng vCPU ch\u01b0a ch\u1eafc gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu \u0111ang c\u1ea7n m\u1ed9t gi\u1ea3i ph\u00e1p VPS \u0111\u1ec3 v\u1eadn h\u00e0nh website, ph\u1ea7n m\u1ec1m ho\u1eb7c h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o <a href=\"https:\/\/tino.vn\/vps-gia-re\" target=\"_blank\" rel=\"noreferrer noopener\">d\u1ecbch v\u1ee5 VPS t\u1ea1i Tino<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tino cung c\u1ea5p c\u00e1c l\u1ef1a ch\u1ecdn VPS v\u1edbi h\u1ea1 t\u1ea7ng l\u01b0u tr\u1eef NVMe, kh\u1ea3 n\u0103ng qu\u1ea3n tr\u1ecb m\u00e1y ch\u1ee7 v\u00e0 t\u00f9y ch\u1ecdn c\u1ea5u h\u00ecnh theo nhu c\u1ea7u. Ng\u01b0\u1eddi d\u00f9ng n\u00ean \u0111\u1ed1i chi\u1ebfu t\u00e0i nguy\u00ean, ch\u00ednh s\u00e1ch d\u1ecbch v\u1ee5 v\u00e0 chi ph\u00ed tr\u01b0\u1edbc khi l\u1ef1a ch\u1ecdn ho\u1eb7c n\u00e2ng c\u1ea5p.<\/p>\n\n\n\n<h2 id=\"K\u1ebft_lu\u1eadn\"><strong>K\u1ebft lu\u1eadn<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ecnh tr\u1ea1ng <strong>VPS b\u1ecb ch\u1eadm<\/strong> c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb CPU, RAM, \u1ed5 c\u1ee9ng, k\u1ebft n\u1ed1i m\u1ea1ng ho\u1eb7c ch\u00ednh nh\u1eefng \u1ee9ng d\u1ee5ng \u0111ang v\u1eadn h\u00e0nh. Thay v\u00ec kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u00e1y ch\u1ee7 ho\u1eb7c n\u00e2ng c\u1ea5p c\u1ea5u h\u00ecnh ngay l\u1eadp t\u1ee9c, b\u1ea1n n\u00ean ki\u1ec3m tra t\u00e0i nguy\u00ean, x\u00e1c \u0111\u1ecbnh ti\u1ebfn tr\u00ecnh g\u00e2y qu\u00e1 t\u1ea3i v\u00e0 \u00e1p d\u1ee5ng bi\u1ec7n ph\u00e1p x\u1eed l\u00fd ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c theo d\u00f5i hi\u1ec7u su\u1ea5t \u0111\u1ecbnh k\u1ef3, qu\u1ea3n l\u00fd \u1ee9ng d\u1ee5ng h\u1ee3p l\u00fd v\u00e0 duy tr\u00ec dung l\u01b0\u1ee3ng d\u1ef1 ph\u00f2ng s\u1ebd gi\u00fap VPS ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh h\u01a1n. N\u1ebfu nhu c\u1ea7u x\u1eed l\u00fd \u0111\u00e3 v\u01b0\u1ee3t qu\u00e1 c\u1ea5u h\u00ecnh hi\u1ec7n t\u1ea1i, h\u00e3y c\u00e2n nh\u1eafc n\u00e2ng c\u1ea5p d\u1ef1a tr\u00ean c\u00e1c ch\u1ec9 s\u1ed1 th\u1ef1c t\u1ebf.<\/p>\n\n\n\n<h2 id=\"Nh\u1eefng_c\u00e2u_h\u1ecfi_th\u01b0\u1eddng_g\u1eb7p\"><strong>Nh\u1eefng c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/strong><\/h2>\n\n\n\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"VPS_b\u1ecb_ch\u1eadm_d\u00f9_CPU_v\u00e0_RAM_v\u1eabn_th\u1ea5p_l\u00e0_do_\u0111\u00e2u?\">VPS b\u1ecb ch\u1eadm d\u00f9 CPU v\u00e0 RAM v\u1eabn th\u1ea5p l\u00e0 do \u0111\u00e2u?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p class=\"wp-block-paragraph\">Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 \u0111\u1ebfn t\u1eeb Disk I\/O, k\u1ebft n\u1ed1i m\u1ea1ng, truy v\u1ea5n database ho\u1eb7c m\u1ed9t \u1ee9ng d\u1ee5ng \u0111ang ch\u1edd ph\u1ea3n h\u1ed3i t\u1eeb d\u1ecbch v\u1ee5 b\u00ean ngo\u00e0i. Ngo\u00e0i ra, CPU Steal Time c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t VPS. B\u1ea1n n\u00ean ki\u1ec3m tra th\u00eam iostat, vmstat v\u00e0 nh\u1eadt k\u00fd \u1ee9ng d\u1ee5ng \u0111\u1ec3 t\u00ecm nguy\u00ean nh\u00e2n.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"Kh\u1edfi_\u0111\u1ed9ng_l\u1ea1i_VPS_c\u00f3_gi\u00fap_m\u00e1y_ch\u1ee7_ch\u1ea1y_nhanh_h\u01a1n_kh\u00f4ng?\">Kh\u1edfi \u0111\u1ed9ng l\u1ea1i VPS c\u00f3 gi\u00fap m\u00e1y ch\u1ee7 ch\u1ea1y nhanh h\u01a1n kh\u00f4ng?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p class=\"wp-block-paragraph\">Kh\u1edfi \u0111\u1ed9ng l\u1ea1i c\u00f3 th\u1ec3 t\u1ea1m th\u1eddi gi\u1ea3i ph\u00f3ng b\u1ed9 nh\u1edb, d\u1eebng ti\u1ebfn tr\u00ecnh b\u1ecb l\u1ed7i ho\u1eb7c kh\u00f4i ph\u1ee5c m\u1ed9t s\u1ed1 d\u1ecbch v\u1ee5. Tuy nhi\u00ean, n\u1ebfu nguy\u00ean nh\u00e2n l\u00e0 thi\u1ebfu t\u00e0i nguy\u00ean, l\u1ed7i \u1ee9ng d\u1ee5ng ho\u1eb7c c\u1ea5u h\u00ecnh ch\u01b0a ph\u00f9 h\u1ee3p, VPS c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c b\u1ecb ch\u1eadm. H\u00e3y ki\u1ec3m tra v\u00e0 l\u01b0u l\u1ea1i th\u00f4ng tin tr\u01b0\u1edbc khi kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"VPS_1GB_RAM_c\u00f3_\u0111\u1ee7_\u0111\u1ec3_ch\u1ea1y_website_WordPress_kh\u00f4ng?\">VPS 1GB RAM c\u00f3 \u0111\u1ee7 \u0111\u1ec3 ch\u1ea1y website WordPress kh\u00f4ng?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p class=\"wp-block-paragraph\">VPS 1GB RAM c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng m\u1ed9t s\u1ed1 website WordPress \u0111\u01a1n gi\u1ea3n, l\u01b0u l\u01b0\u1ee3ng th\u1ea5p n\u1ebfu \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh ph\u00f9 h\u1ee3p. Tuy nhi\u00ean, khi ch\u1ea1y \u0111\u1ed3ng th\u1eddi web server, PHP, database v\u00e0 nhi\u1ec1u plugin, b\u1ed9 nh\u1edb c\u00f3 th\u1ec3 nhanh ch\u00f3ng b\u1ecb gi\u1edbi h\u1ea1n. C\u1ea5u h\u00ecnh c\u1ea7n thi\u1ebft c\u00f2n ph\u1ee5 thu\u1ed9c v\u00e0o m\u00e3 ngu\u1ed3n, l\u01b0u l\u01b0\u1ee3ng v\u00e0 c\u00e1c d\u1ecbch v\u1ee5 \u0111i k\u00e8m.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"V\u00ec_sao_VPS_ch\u1ec9_b\u1ecb_ch\u1eadm_v\u00e0o_ban_\u0111\u00eam?\">V\u00ec sao VPS ch\u1ec9 b\u1ecb ch\u1eadm v\u00e0o ban \u0111\u00eam?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p class=\"wp-block-paragraph\">VPS ch\u1eadm theo khung gi\u1edd c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn t\u00e1c v\u1ee5 sao l\u01b0u, Cron Job, \u0111\u1ed3ng b\u1ed9 d\u1eef li\u1ec7u, c\u1eadp nh\u1eadt ho\u1eb7c c\u00f4ng vi\u1ec7c ch\u1ea1y \u0111\u1ecbnh k\u1ef3. B\u1ea1n n\u00ean \u0111\u1ed1i chi\u1ebfu th\u1eddi \u0111i\u1ec3m x\u1ea3y ra s\u1ef1 c\u1ed1 v\u1edbi l\u1ecbch th\u1ef1c thi t\u00e1c v\u1ee5 v\u00e0 bi\u1ec3u \u0111\u1ed3 s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean \u0111\u1ec3 t\u00ecm nguy\u00ean nh\u00e2n.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"Load_average_bao_nhi\u00eau_th\u00ec_\u0111\u01b0\u1ee3c_coi_l\u00e0_cao?\">Load average bao nhi\u00eau th\u00ec \u0111\u01b0\u1ee3c coi l\u00e0 cao?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p class=\"wp-block-paragraph\">Kh\u00f4ng c\u00f3 con s\u1ed1 c\u1ed1 \u0111\u1ecbnh, h\u00e3y so v\u1edbi s\u1ed1 vCPU (xem b\u1eb1ng nproc). Load average li\u00ean t\u1ee5c l\u1edbn h\u01a1n s\u1ed1 vCPU cho th\u1ea5y c\u00f3 ti\u1ebfn tr\u00ecnh ph\u1ea3i x\u1ebfp h\u00e0ng ch\u1edd. Tuy nhi\u00ean tr\u00ean Linux, load g\u1ed3m c\u1ea3 ti\u1ebfn tr\u00ecnh ch\u1edd \u1ed5 \u0111\u0129a, n\u00ean c\u1ea7n xem th\u00eam c\u1ed9t r v\u00e0 wa trong vmstat \u0111\u1ec3 bi\u1ebft \u0111i\u1ec3m ngh\u1ebdn l\u00e0 CPU hay I\/O.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\n<script type=\"application\/ld+json\">\n\t{\n\t\t\"@context\": \"https:\/\/schema.org\",\n\t\t\"@type\": \"FAQPage\",\n\t\t\"mainEntity\": [\n\t\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"VPS b\u1ecb ch\u1eadm d\u00f9 CPU v\u00e0 RAM v\u1eabn th\u1ea5p l\u00e0 do \u0111\u00e2u?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 \u0111\u1ebfn t\u1eeb Disk I\/O, k\u1ebft n\u1ed1i m\u1ea1ng, truy v\u1ea5n database ho\u1eb7c m\u1ed9t \u1ee9ng d\u1ee5ng \u0111ang ch\u1edd ph\u1ea3n h\u1ed3i t\u1eeb d\u1ecbch v\u1ee5 b\u00ean ngo\u00e0i. 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[&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":131413,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7728],"tags":[7736],"class_list":["post-131392","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-quan-tri-server","tag-quan-tri-server-linux"],"_links":{"self":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts\/131392","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/comments?post=131392"}],"version-history":[{"count":6,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts\/131392\/revisions"}],"predecessor-version":[{"id":131424,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/posts\/131392\/revisions\/131424"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/media\/131413"}],"wp:attachment":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/media?parent=131392"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/categories?post=131392"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/tags?post=131392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}