{"id":2066,"date":"2026-07-01T15:18:07","date_gmt":"2026-07-01T08:18:07","guid":{"rendered":"https:\/\/tino.vn\/?post_type=ht_kb&#038;p=2066"},"modified":"2026-07-01T15:18:07","modified_gmt":"2026-07-01T08:18:07","slug":"thong-bao-503-resource-limit-is-reached-va-cach-kiem-tra-xu-ly","status":"publish","type":"ht_kb","link":"https:\/\/tino.vn\/blog\/docs\/thong-bao-503-resource-limit-is-reached-va-cach-kiem-tra-xu-ly\/","title":{"rendered":"Th\u00f4ng b\u00e1o 503 Resource Limit Is Reached v\u00e0 c\u00e1ch ki\u1ec3m tra x\u1eed l\u00fd"},"content":{"rendered":"<p>C\u00f3 r\u1ea5t nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p Kh\u00e1ch h\u00e0ng \u0111ang s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 Share hosting t\u1ea1i\u00a0<strong>Techhost<\/strong> g\u1eb7p th\u00f4ng b\u00e1o &#8220;503 Resource Limit Is Reached&#8221; khi truy c\u1eadp website, v\u1eady v\u1edbi th\u00f4ng b\u00e1o n\u00e0y th\u00ec c\u00e2u h\u1ecfi \u0111\u1eb7t ra s\u1ebd l\u00e0: l\u1ed7i n\u00e0y c\u1ee5 th\u1ec3 l\u00e0 g\u00ec, nguy\u00ean nh\u00e2n d\u1eabn t\u1edbi l\u1ed7i l\u00e0 do \u0111\u00e2u v\u00e0 c\u00e1ch x\u1eed l\u00fd l\u1ed7i n\u00e0y ra sao.<\/p>\n<p><strong>1. Th\u00f4ng b\u00e1o 503 Resource Limit Is Reached l\u00e0 g\u00ec?<\/strong><\/p>\n<p>503 Resource Limit Is Reached th\u1ef1c ch\u1ea5t kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ed7i m\u00e0 ch\u1ec9 l\u00e0 1 th\u00f4ng b\u00e1o khi ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp website tr\u00ean hosting khi c\u00f3 t\u00ecnh tr\u1ea1ng s\u1eed d\u1ee5ng qu\u00e1 l\u01b0\u1ee3ng t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e1t, t\u00e0i nguy\u00ean m\u00e0 hosting \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e1t bao g\u1ed3m %CPU, l\u01b0\u1ee3ng RAM \u0111\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng, I\/O \u0111\u01b0\u1ee3c ph\u00e9p t\u1ed1i \u0111a, c\u0169ng nh\u01b0 s\u1ed1 processes \u0111\u01b0\u1ee3c ph\u00e9p ch\u1ea1y \u0111\u1ed3ng th\u1eddi v\u00e0 t\u1ed5ng s\u1ed1 processes \u0111\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng.<\/p>\n<p>V\u1edbi d\u1ecbch v\u1ee5 share hosting (Linux hosting) t\u1ea1i\u00a0<strong>Techhost<\/strong>\u00a0\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 CloudLinux\u00a0v\u00e0 v\u1edbi c\u00f4ng ngh\u1ec7 n\u00e0y\u00a0s\u1ebd \u0111\u1ea3m b\u1ea3o vi\u1ec7c c\u00e2n b\u1eb1ng t\u00e0i nguy\u00ean v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00e0i nguy\u00ean tr\u00ean t\u1eebng t\u00e0i kho\u1ea3n tr\u00ean server share hosting. B\u00ean c\u1ea1nh \u0111\u00f3, v\u1edbi c\u00f4ng ngh\u1ec7 n\u00e0y\u00a0<strong>Techhost<\/strong>\u00a0s\u1ebd \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1ee3c vi\u1ec7c h\u1ea1n ch\u1ebf t\u1ea5n c\u00f4ng local attack 100% tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c t\u00e0i kho\u1ea3n tr\u00ean c\u00f9ng m\u1ed9t server c\u0169ng nh\u01b0 tr\u00e1nh tr\u01b0\u1eddng h\u1ee3p c\u00f3 1 user n\u00e0o \u0111\u00f3 s\u1eed d\u1ee5ng qu\u00e1 t\u00e0i nguy\u00ean v\u00e0 g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c user kh\u00e1c tr\u00ean c\u00f9ng server.<\/p>\n<p><strong>2. C\u00e1ch ki\u1ec3m tra t\u00ecnh tr\u1ea1ng t\u00e0i nguy\u00ean s\u1eed d\u1ee5ng<\/strong><\/p>\n<p>Sau khi truy c\u1eadp v\u00e0o cPanel hosting &#8211;&gt; ch\u1ecdn\u00a0&#8220;<strong>CPU and Concurrent Connection Usage<\/strong>&#8220;.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/techhost.vn\/wp-content\/uploads\/2016\/11\/resource1.png\" alt=\"\" width=\"684\" height=\"210\" title=\"\"><\/p>\n<p>Ch\u1ecdn\u00a0<strong>&#8220;Details&#8221;<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/techhost.vn\/wp-content\/uploads\/2016\/11\/resource2.png\" alt=\"\" width=\"380\" height=\"172\" title=\"\"><\/p>\n<p>T\u1ea1i \u0111\u00e2y ta c\u00f3 th\u1ec3 ki\u1ec3m tra t\u00ecnh tr\u1ea1ng s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean th\u00f4ng qua d\u1ea1ng table (b\u1ea3ng th\u1ed1ng k\u00ea) ho\u1eb7c c\u0169ng c\u00f3 th\u1ec3 th\u00f4ng qua d\u1ea1ng bi\u1ec3u \u0111\u1ed3 tr\u1ef1c quan cho d\u1ec5 quan s\u00e1t.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/techhost.vn\/wp-content\/uploads\/2016\/11\/resource3.png\" alt=\"\" width=\"668\" height=\"557\" title=\"\"><\/p>\n<p>V\u1edbi d\u1ea1ng b\u1ea3ng th\u00f4ng k\u00ea n\u00e0y, c\u1ea7n ch\u00fa \u00fd\u00a04 th\u00f4ng s\u1ed1 CPU, pMEM, EP, IO t\u01b0\u01a1ng \u1ee9ng v\u1edbi CPU usage data, Physical memory usage data, Entry processes data, I\/O usage trong m\u1ed7i c\u1ed9t tr\u00ean c\u00f2n c\u00f3 3 th\u00f4ng s\u1ed1 nh\u1ecf a, m, l t\u01b0\u01a1ng \u1ee9ng v\u1edbi th\u00f4ng s\u1ed1 average, max, limit c\u1ee7a t\u1eebng c\u1ed9t tr\u00ean.<\/p>\n<p>Khi th\u1ea5y c\u00e1c c\u1ed9t avarage v\u00e0 max th\u01b0\u1eddng xuy\u00ean c\u00f3 th\u00f4ng s\u1ed1 tr\u00f9ng v\u1edbi c\u1ed9t limit th\u00ec ch\u1ee9ng t\u1ecf website c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng s\u1eed d\u1ee5ng qu\u00e1 t\u00e0i nguy\u00ean v\u00e0 s\u1ebd xu\u1ea5t hi\u1ec7n th\u00f4ng b\u00e1o 503 Resource Limit Is Reached khi truy c\u1eadp.<\/p>\n<p>=====================================================================================<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/techhost.vn\/wp-content\/uploads\/2016\/11\/resource4.png\" alt=\"\" width=\"692\" height=\"421\" title=\"\"><\/p>\n<p>V\u1edbi d\u1ea1ng bi\u1ec3u \u0111\u1ed3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh r\u00f5 c\u00e1c m\u1ee9c t\u00e0i nguy\u00ean s\u1eed d\u1ee5ng th\u00f4ng qua c\u00e1c \u0111\u01b0\u1eddng m\u00e0u \u0111\u1ecf, xanh l\u00e1 c\u00e2y v\u00e0 xanh da tr\u1eddi t\u01b0\u01a1ng \u1ee9ng v\u1edbi limit, average v\u00e0 max.<\/p>\n<p><strong>3. Nguy\u00ean nh\u00e2n<\/strong><\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t v\u00e0i l\u00fd do th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn th\u00f4ng b\u00e1o &#8220;503 Resource Limit Is Reached&#8221; khi truy c\u1eadp website:<\/p>\n<ul>\n<li>Webcrawlers\u00a0l\u00e0 m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh t\u1ef1 \u0111\u1ed9ng t\u00ecm ki\u1ebfm c\u00f3 th\u1ec3 l\u00e0m m\u1ed9t l\u01b0\u1ee3ng l\u1edbn\u00a0request\u00a0tr\u00ean m\u1ed7i gi\u00e2y g\u00e2y n\u00ean t\u00ecnh tr\u1ea1ng v\u01b0\u1ee3t qu\u00e1 t\u00e0i nguy\u00ean cho ph\u00e9p d\u1eabn \u0111\u1ebfn l\u1ed7i tr\u00ean. C\u1ea7n \u0111i\u1ec1u ch\u1ec9nh l\u01b0\u1ee3ng\u00a0request\u00a0th\u00f4ng qua trang qu\u1ea3n l\u00fd\u00a0webcrawlers\u00a0(v\u00ed d\u1ee5: \u0111i\u1ec1u ch\u1ec9nh l\u01b0\u1ee3ng\u00a0request\u00a0c\u1ee7a\u00a0google\u00a0th\u00f4ng qua trang b\u1ed9 c\u00f4ng c\u1ee5 google\u00a0webmaster).<\/li>\n<li>M\u1ed9t khi\u00a0website\u00a0c\u00f3 l\u01b0\u1ee3ng truy c\u1eadp cao c\u0169ng d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng v\u01b0\u1ee3t qu\u00e1 t\u00e0i nguy\u00ean cho ph\u00e9p.<\/li>\n<li>Website\u00a0s\u1eed d\u1ee5ng v\u01b0\u1ee3t qu\u00e1 t\u00e0i nguy\u00ean cho ph\u00e9p.<\/li>\n<\/ul>\n<p><strong>4. C\u00e1ch x\u1eed l\u00fd<\/strong><\/p>\n<p>&#8211; \u0110\u1ed1i v\u1edbi \u00a0tr\u01b0\u1eddng h\u1ee3p \u0111\u1ea7u ti\u00ean c\u1ea7n ki\u1ec3m tra v\u00e0 kh\u1eafc ph\u1ee5c b\u1eb1ng c\u00e1ch truy c\u1eadp\u00a0cPanel, ch\u1ecdn\u00a0AWStats &#8211;&gt;\u00a0ch\u1ecdn \u00a0View 1 website c\u1ee5 th\u1ec3 tr\u00ean hosting. \u1ede m\u1ee5c Robots\/Spiders visitors,\u00a0t\u1ea1i \u0111\u00e2y n\u1ebfu th\u1ea5y l\u01b0\u1ee3ng Hits\u00a0v\u00e0\u00a0Bandwith\u00a0cao so v\u1edbi g\u00f3i hosting, ta c\u00f3 th\u1ec3 t\u1ef1 c\u1ea5u h\u00ecnh trong file\u00a0robot.txt\u00a0t\u1ea1i th\u01b0 m\u1ee5c\u00a0public_html\u00a0nh\u01b0 sau \u0111\u1ec3 gi\u1ea3m l\u01b0\u1ee3ng\u00a0request :<br \/>\n<em>User-agent: &lt;t\u00ean c\u1ee7a bot &gt;<\/em><br \/>\n<em>Crawl-delay: &lt; th\u1eddi gian gi\u1ea3n c\u00e1ch gi\u1eefa 2 l\u1ea7n Crawl t\u00ednh b\u1eb1ng gi\u00e2y &gt;<\/em><\/p>\n<p>&#8211; \u0110\u1ed1i v\u1edbi tr\u01b0\u1eddng h\u1ee3p th\u1ee9 2 c\u00f3 th\u1ec3 ki\u1ec3m tra t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1ch x\u1eed l\u00fd tr\u00ean, nh\u01b0ng t\u1ea1i m\u1ee5c\u00a0Days of month ta c\u00f3 th\u1ec3\u00a0th\u1ed1ng k\u00ea xem l\u01b0u l\u01b0\u1ee3ng Bandwith\u00a0c\u0169ng nh\u01b0 l\u01b0\u1ee3ng Hits\u00a0s\u1ebd c\u00f3 2 tr\u01b0\u1edbng h\u1ee3p x\u1ea3y ra :<\/p>\n<ul>\n<li>Bandwith v\u00e0 Hits\u00a0t\u0103ng cao \u0111\u1ed9t bi\u1ebfn trong 1 ng\u00e0y l\u00fac n\u00e0y c\u1ea7n ti\u1ebfp t\u1ee5c truy c\u1eadp m\u1ee5c\u00a0Hosts (Top 25)\u00a0\u0111\u1ec3 x\u00e1c \u0111\u1ecbnh IP c\u00f3 Bandwith v\u00e0 Hits cao \u0111\u1ed9t bi\u1ebfn v\u00e0 ti\u1ebfn h\u00e0nh\u00a0ch\u1eb7n IP v\u1edbi ch\u1ee9c n\u0103ng\u00a0IP Address Deny Manager<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2019\/09\/24-04-2016201-50-5320PM.png\" alt=\"\" width=\"586\" height=\"283\" title=\"\"><\/p>\n<p>&#8211; V\u1ec1 c\u01a1 b\u1ea3n th\u00ec\u00a0c\u1ea7n t\u1ed1i \u01b0u l\u1ea1i m\u00e3 ngu\u1ed3n website, \u0111\u1ed1i v\u1edbi c\u00e1c\u00a0website\u00a0s\u1eed d\u1ee5ng m\u00e3 ngu\u1ed3n m\u1edf nh\u01b0 WordPress, Joomla\u00a0th\u00ec n\u00ean ki\u1ec3m tra v\u00e0 t\u1eaft c\u00e1c\u00a0plugin\u00a0kh\u00f4ng c\u1ea7n thi\u1ebft, h\u1ea1n ch\u1ebf s\u1eed c\u00e1c\u00a0plugin, themes\u00a0kh\u00f4ng r\u00f5 ngu\u1ed3n g\u1ed1c \u0111\u1ebf tr\u00e1nh t\u00ecnh tr\u1ea1ng b\u1ecb d\u00ednh m\u00e3 \u0111\u1ed9c d\u1eabn \u0111\u1ebfn vi\u1ec7c chi\u1ebfm d\u1ee5ng, v\u01b0\u1ee3t qu\u00e1 t\u00e0i nguy\u00ean cho ph\u00e9p.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00f3 r\u1ea5t nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p Kh\u00e1ch h\u00e0ng \u0111ang s\u1eed d\u1ee5ng d\u1ecbch v\u1ee5 Share hosting t\u1ea1i\u00a0Techhost g\u1eb7p th\u00f4ng b\u00e1o &#8220;503 Resource Limit Is Reached&#8221; khi truy c\u1eadp website, v\u1eady v\u1edbi th\u00f4ng b\u00e1o n\u00e0y th\u00ec c\u00e2u h\u1ecfi \u0111\u1eb7t ra s\u1ebd l\u00e0: l\u1ed7i n\u00e0y c\u1ee5 th\u1ec3 l\u00e0 g\u00ec, nguy\u00ean nh\u00e2n d\u1eabn t\u1edbi l\u1ed7i l\u00e0 do \u0111\u00e2u v\u00e0 c\u00e1ch [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":2067,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"tags":[],"ht_kb_category":[28],"class_list":["post-2066","ht_kb","type-ht_kb","status-publish","format-standard","has-post-thumbnail","hentry","ht_kb_category-huong-dan-chung"],"_links":{"self":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/ht_kb\/2066","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/ht_kb"}],"about":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/comments?post=2066"}],"version-history":[{"count":1,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/ht_kb\/2066\/revisions"}],"predecessor-version":[{"id":126367,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/ht_kb\/2066\/revisions\/126367"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/media\/2067"}],"wp:attachment":[{"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/media?parent=2066"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/tags?post=2066"},{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/tino.vn\/blog\/wp-json\/wp\/v2\/ht_kb_category?post=2066"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}