{"id":47309,"date":"2021-12-08T15:57:36","date_gmt":"2021-12-08T08:57:36","guid":{"rendered":"https:\/\/ben.com.vn\/tin-tuc\/?p=47309"},"modified":"2021-12-20T11:36:57","modified_gmt":"2021-12-20T04:36:57","slug":"loi-502-bad-gateway-la-gi","status":"publish","type":"post","link":"https:\/\/ben.com.vn\/tin-tuc\/loi-502-bad-gateway-la-gi\/","title":{"rendered":"L\u1ed7i 502 bad gateway l\u00e0 g\u00ec? C\u00e1ch kh\u1eafc ph\u1ee5c nhanh, chu\u1ea9n nh\u1ea5t"},"content":{"rendered":"

L\u1ed7i 502 bad gateway x\u1ea3y ra kh\u00e1 ph\u1ed5 bi\u1ebfn khi truy c\u1eadp internet \u1edf tr\u00ean m\u00e1y t\u00ednh. V\u1eady l\u1ed7i\u00a0502 bad gateway l\u00e0 g\u00ec v\u00e0 c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c b\u1eb1ng nh\u1eefng c\u00e1ch n\u00e0o? N\u1ebfu b\u1ea1n c\u0169ng \u0111ang g\u1eb7p v\u1ea5n \u0111\u1ec1 v\u1ec1 d\u1ea1ng l\u1ed7i n\u00e0y th\u00ec h\u00e3y c\u00f9ng \u0111\u1ecdc b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y c\u1ee7a Ben Computer \u0111\u1ec3 x\u1eed l\u00fd nh\u00e9!<\/p>\n

I. L\u1ed7i 502 bad gateway l\u00e0 g\u00ec?<\/strong><\/h2>\n

L\u1ed7i 502 bad gateway<\/a><\/span><\/strong>\u00a0l\u00e0 m\u1ed9t lo\u1ea1i l\u1ed7i tr\u1ea1ng th\u00e1i HTTP. B\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c b\u00e1o l\u1ed7i n\u00e0y khi truy c\u1eadp internet m\u00e0 gateway ho\u1eb7c proxy c\u00f3 ph\u1ea3n h\u1ed3i kh\u00f4ng h\u1ee3p l\u1ec7 t\u1eeb ph\u00eda server g\u1ed1c. Ch\u00ednh v\u00ec th\u1ebf, l\u00fac n\u00e0y b\u1ea1n s\u1ebd kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c v\u00e0o trang web.<\/p>\n

\"502L\u1ed7i 502 bad gateway c\u00f3 th\u1ec3 g\u00e2y \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn vi\u1ec7c seo web. B\u1edfi khi web b\u1ecb ng\u1eebng ho\u1ea1t \u0111\u1ed9ng trong nhi\u1ec1u gi\u1edd s\u1ebd g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1ee9 h\u1ea1ng trang web. Do \u0111\u00f3, khi website c\u00f3 th\u00f4ng b\u00e1o l\u1ed7i 502, b\u1ea1n c\u1ea7n ki\u1ec3m tra, t\u00ecm nguy\u00ean nh\u00e2n v\u00e0 kh\u1eafc ph\u1ee5c ngay l\u1eadp t\u1ee9c.<\/p>\n

\n

C\u00f3 th\u1ec3 b\u1ea1n quan t\u00e2m: L\u1ed7i 403 l\u00e0 g\u00ec? Nguy\u00ean nh\u00e2n v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c<\/a><\/strong><\/span><\/p>\n<\/blockquote>\n

II. M\u1ed9t s\u1ed1 nguy\u00ean nh\u00e2n g\u00e2y ra l\u1ed7i 502 bad gateway<\/strong><\/h2>\n

\"l\u1ed7i<\/p>\n

C\u1ea7n n\u1eafm \u0111\u01b0\u1ee3c nguy\u00ean nh\u00e2n g\u00e2y l\u1ed7i 502 bad gateway l\u00e0 g\u00ec<\/em><\/p>\n

Bi\u1ebft \u0111\u01b0\u1ee3c nguy\u00ean nh\u00e2n g\u00e2y l\u1ed7i 502 bad gateway l\u00e0 g\u00ec s\u1ebd gi\u00fap b\u1ea1n c\u00f3 c\u00e1ch x\u1eed l\u00fd ph\u00f9 h\u1ee3p. C\u00f3 m\u1ed9t s\u1ed1 nguy\u00ean nh\u00e2n d\u01b0\u1edbi \u0111\u00e2y s\u1ebd g\u00e2y ra l\u1ed7i 502 bad gateway:<\/p>\n

– C\u00f3 s\u1ef1 xung \u0111\u1ed9t gi\u1eefa m\u00e1y ch\u1ee7 v\u00e0 m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n.<\/p>\n

– Do tr\u00ecnh duy\u1ec7t c\u00f3 v\u1ea5n \u0111\u1ec1.<\/p>\n

– C\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 b\u1ecb l\u1ed7i ho\u1eb7c qu\u00e1 t\u1ea3i do traffic cao.<\/p>\n

– C\u00f3 s\u1ef1 c\u1ed1 Plugin, DNS, Cache,… trong tr\u00ecnh duy\u1ec7t.<\/p>\n

III. 8 C\u00e1ch kh\u1eafc ph\u1ee5c l\u1ed7i 502 bad gateway hi\u1ec7u qu\u1ea3 nh\u1ea5t<\/strong><\/h2>\n

Sau khi \u0111\u00e3 bi\u1ebft l\u1ed7i 502 bad gateway l\u00e0 g\u00ec<\/strong>, \u0111\u1ea7u ti\u00ean, h\u00e3y ki\u1ec3m tra l\u1ea1i m\u1ea1ng v\u00e0 ch\u1eafc ch\u1eafn r\u1eb1ng k\u1ebft n\u1ed1i v\u1eabn \u0111ang ho\u1ea1t \u0111\u1ed9ng t\u1ed1t. N\u1ebfu kh\u00f4ng, h\u00e3y c\u00e0i \u0111\u1eb7t l\u1ea1i m\u1ea1ng c\u1ee7a b\u1ea1n \u0111\u1ec3 m\u00e1y t\u00ednh k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c \u1ed5n \u0111\u1ecbnh nh\u1ea5t. N\u1ebfu kh\u00f4ng ph\u1ea3i do m\u1ea1ng, h\u00e3y th\u1eed m\u1ed9t s\u1ed1 c\u00e1ch kh\u1eafc ph\u1ee5c sau:<\/p>\n

1. T\u1ea3i l\u1ea1i web ho\u1eb7c kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u00e1y t\u00ednh<\/strong><\/h3>\n

Thao t\u00e1c \u0111\u1ea7u ti\u00ean v\u00e0 c\u0169ng l\u00e0 \u0111\u01a1n gi\u1ea3n nh\u1ea5t, ch\u00ednh l\u00e0 b\u1ea1n h\u00e3y t\u1ea3i l\u1ea1i trang web. Nh\u1ea5n ph\u00edm F5 ho\u1eb7c Refresh\/Reload \u0111\u1ec3 th\u1eed t\u1ea3i l\u1ea1i. Ho\u1eb7c, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 restart l\u1ea1i m\u00e1y t\u00ednh. N\u1ebfu sau khi th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c n\u00e0y, l\u1ed7i 502 bi\u1ebfn m\u1ea5t th\u00ec c\u00f3 ngh\u0129a l\u00e0 web ch\u1ec9 \u0111ang b\u1ecb l\u1ed7i t\u1ea1m th\u1eddi v\u00e0 kh\u00f4ng c\u00f3 \u1ea3nh h\u01b0\u1edfng g\u00ec.<\/p>\n

\"502<\/p>\n

Th\u1eed restart l\u1ea1i m\u00e1y<\/em><\/p>\n

2. Kh\u1edfi \u0111\u1ed9ng l\u1ea1i tr\u00ecnh duy\u1ec7t<\/strong><\/h3>\n

Trong tr\u01b0\u1eddng h\u1ee3p l\u1ed7i 502 x\u1ea3y ra do m\u00e1y t\u00ednh c\u1ee7a b\u1ea1n c\u00f3 s\u1ef1 c\u1ed1, b\u1ea1n ch\u1ec9 c\u1ea7n \u0111\u00f3ng t\u1ea5t c\u1ea3 c\u00e1c tr\u00ecnh duy\u1ec7t l\u1ea1i. Sau \u0111\u00f3, m\u1edf l\u1ea1i nh\u01b0 b\u00ecnh th\u01b0\u1eddng v\u00e0 truy c\u1eadp v\u00e0o trang web. N\u1ebfu \u0111\u00fang l\u00e0 do l\u1ed7i n\u00e0y, sau khi kh\u1edfi \u0111\u1ed9ng l\u1ea1i tr\u00ecnh duy\u1ec7t, l\u1ed7i 502 bad Gateway s\u1ebd bi\u1ebfn m\u1ea5t.<\/p>\n

\"bad<\/p>\n

Kh\u1edfi \u0111\u1ed9ng l\u1ea1i tr\u00ecnh duy\u1ec7t<\/em><\/p>\n

3. Th\u1eed d\u00f9ng tr\u00ecnh duy\u1ec7t kh\u00e1c<\/strong><\/h3>\n

Trong m\u1ed9t v\u00e0i tr\u01b0\u1eddng h\u1ee3p, tr\u00ecnh duy\u1ec7t web g\u1eb7p s\u1ef1 c\u1ed1 n\u00ean s\u1ebd g\u00e2y ra l\u1ed7i 502. L\u00fac n\u00e0y, b\u1ea1n ch\u1ec9 c\u1ea7n th\u1eed truy c\u1eadp l\u1ea1i website b\u1eb1ng m\u1ed9t tr\u00ecnh duy\u1ec7t kh\u00e1c ho\u1eb7c d\u00f9ng ch\u1ebf \u0111\u1ed9 \u1ea9n danh. N\u1ebfu v\u1edbi c\u00e1c tr\u00ecnh duy\u1ec7t kh\u00e1c, trang web kh\u00f4ng c\u00f3 l\u1ed7i th\u00ec \u0111\u00e2y ch\u1eafc ch\u1eafn l\u00e0 do l\u1ed7i t\u1eeb tr\u00ecnh duy\u1ec7t c\u0169.<\/p>\n

\"Th\u1eed<\/p>\n

Th\u1eed \u0111\u1ed5i sang m\u1ed9t tr\u00ecnh duy\u1ec7t kh\u00e1c<\/em><\/p>\n

L\u00fac n\u00e0y, b\u1ea1n c\u1ea7n x\u00f3a b\u1ecf tr\u00ecnh duy\u1ec7t v\u00e0 th\u1eed l\u1ea1i phi\u00ean b\u1ea3n m\u1edbi \u0111\u1ec3 kh\u00f4ng g\u00e2y l\u1ed7i. Tr\u01b0\u1eddng h\u1ee3p n\u00e0y l\u1ed7i 502 bad Gateway c\u0169ng kh\u00f4ng c\u00f3 \u1ea3nh h\u01b0\u1edfng g\u00ec v\u1edbi website c\u1ee7a b\u1ea1n.<\/p>\n

4. X\u00f3a cache ho\u1eb7c cookies<\/strong><\/h3>\n

\u0110\u00f4i khi do b\u1ed9 nh\u1edb cache ho\u1eb7c c\u00e1c file \u0111\u00e3 l\u1ed7i th\u1eddi \u0111\u01b0\u1ee3c l\u01b0u \u1edf tr\u00ecnh duy\u1ec7t l\u1ea1i l\u00e0 nguy\u00ean nh\u00e2n g\u00e2y ra l\u1ed7i 502. L\u00fac n\u00e0y, b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n th\u1eed 2 h\u00e0nh \u0111\u1ed9ng l\u00e0 x\u00f3a cache v\u00e0 x\u00f3a cookies c\u1ee7a m\u00e1y. Sau khi \u0111\u00e3 x\u00f3a xong, th\u1eed t\u1ea3i l\u1ea1i xem web \u0111\u00e3 h\u1ebft l\u1ed7i 502 bad gateway ch\u01b0a.<\/p>\n

\"S\u1eeda<\/p>\n

X\u00f3a cahes<\/em><\/p>\n

5. Thay \u0111\u1ed5i DNS<\/strong><\/h3>\n

N\u1ebfu b\u1ea1n ch\u00ednh l\u00e0 ng\u01b0\u1eddi l\u1eadp tr\u00ecnh web, khi trang web thay \u0111\u1ed5i hosting ho\u1eb7c chuy\u1ec3n IP m\u1edbi c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o ra l\u1ed7i n\u00e0y. Vi\u1ec7c b\u1ea1n c\u1ea7n l\u00e0m l\u00e0 ki\u1ec3m tra l\u1ea1i qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i.<\/p>\n

C\u00f2n n\u1ebfu b\u1ea1n ch\u1ec9 l\u00e0 ng\u01b0\u1eddi truy c\u1eadp, h\u00e3y th\u1eed thay \u0111\u1ed5i l\u1ea1i DNS kh\u00e1c. C\u00f3 th\u1ec3 l\u1ed7i 502 s\u1ebd bi\u1ebfn m\u1ea5t sau khi b\u1ea1n th\u1ef1c hi\u1ec7n vi\u1ec7c thay \u0111\u1ed5i n\u00e0y.<\/p>\n

\"Thay<\/p>\n

Thay \u0111\u1ed5i DNS<\/em><\/p>\n

6. Ki\u1ec3m tra Plugin<\/strong><\/h3>\n

B\u1ea1n th\u1eed v\u00f4 hi\u1ec7u h\u00f3a Plugin trong m\u1ed9t th\u1eddi gian ng\u1eafn, r\u1ed3i ki\u1ec3m tra xem l\u1ed7i 502 bad gateway c\u00f3 h\u1ebft hay kh\u00f4ng. N\u1ebfu website tr\u1edf l\u1ea1i b\u00ecnh th\u01b0\u1eddng, h\u00e3y \u0111\u1ed5i t\u00ean th\u01b0 m\u1ee5c th\u00e0nh 1 plugin nh\u01b0 l\u00fac \u0111\u1ea7u. V\u00f4 hi\u1ec7u h\u00f3a t\u1eebng plugin \u0111\u1ec3 t\u00ecm ch\u00ednh x\u00e1c plugin g\u00e2y l\u1ed7i.<\/p>\n

7. Th\u1eed x\u00f3a caches DNS<\/strong><\/h3>\n

N\u1ebfu caches DNS b\u1ecb sai ho\u1eb7c b\u1ecb c\u0169 c\u0169ng s\u1ebd g\u00e2y l\u1ed7i 502. B\u1ea1n c\u1ea7n flush DNS theo c\u00e1c b\u01b0\u1edbc sau:<\/p>\n

V\u1edbi m\u00e1y t\u00ednh Windows<\/strong><\/p>\n

M\u1edf Windows command prompt b\u1eb1ng t\u1ed5 h\u1ee3p Windows + R<\/strong> v\u00e0 G\u00f5 cmd<\/strong> r\u1ed3i nh\u1ea5n OK<\/strong>. Ti\u1ebfp theo, g\u00f5 ipconfig \/flushdns<\/strong> v\u00e0 nh\u1ea5n Enter<\/strong>.<\/p>\n

\"Th\u1eed<\/p>\n

C\u00e1c thao t\u00e1c v\u1edbi m\u00e1y t\u00ednh Windows<\/em><\/p>\n

V\u1edbi MacOS<\/strong><\/p>\n

Nh\u1ea5n t\u1ed5 h\u1ee3p Command + Space<\/strong> \u0111\u1ec3 m\u1edf Terminal, sau \u0111\u00f3, t\u00ecm erminal \u1edf tr\u00ean Spotlight<\/strong> r\u1ed3i nh\u1ea5n \u0111\u00fap chu\u1ed9t v\u00e0o k\u1ebft qu\u1ea3 \u0111\u1ea7u ti\u00ean. Cu\u1ed1i c\u00f9ng, nh\u1eadp sudo dscacheutil \u2013flushcache<\/strong>.<\/p>\n

\"x\u00f3a<\/p>\n

C\u00e1c thao t\u00e1c v\u1edbi MacOS<\/em><\/p>\n

8. G\u1eedi li\u00ean h\u1ec7 ph\u1ea3n h\u1ed3i cho trang web<\/strong><\/h3>\n

N\u1ebfu b\u1ea1n l\u00e0 ng\u01b0\u1eddi truy c\u1eadp th\u00ec h\u00e3y th\u1eed g\u1eedi ph\u1ea3n h\u1ed3i cho trang web \u0111\u1ec3 \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt vi\u00ean x\u1eed l\u00fd. C\u00e1c trang web hi\u1ec7n \u0111\u1ec1u c\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1ch \u0111\u1ec3 li\u00ean h\u1ec7. B\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp c\u00e1c trang m\u1ea1ng x\u00e3 h\u1ed9i \u0111\u1ec3 g\u1eedi ph\u1ea3n h\u1ed3i nhanh nh\u1ea5t.<\/p>\n

Tr\u00ean \u0111\u00e2y, c\u00e1c b\u1ea1n \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00ecm hi\u1ec3u l\u1ed7i 502 bad gateway l\u00e0 g\u00ec<\/strong> v\u00e0 c\u00e1ch x\u1eed l\u00fd theo nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p. Hi v\u1ecdng v\u1edbi c\u00e1c th\u00f4ng tin trong b\u00e0i vi\u1ebft m\u00e0 Ben Computer chia s\u1ebb, s\u1ebd gi\u00fap b\u1ea1n t\u00ecm \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00e1p kh\u1eafc ph\u1ee5c nhanh nh\u1ea5t.<\/p>\n

Xem th\u00eam: L\u1ed7i 404 l\u00e0 g\u00ec? C\u00e1ch kh\u1eafc ph\u1ee5c hi\u1ec7u qu\u1ea3 nh\u1ea5t<\/a><\/strong><\/span><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

L\u1ed7i 502 bad gateway x\u1ea3y ra kh\u00e1 ph\u1ed5 bi\u1ebfn khi truy c\u1eadp internet \u1edf tr\u00ean m\u00e1y t\u00ednh. V\u1eady l\u1ed7i\u00a0502 bad gateway l\u00e0 g\u00ec v\u00e0 c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c b\u1eb1ng nh\u1eefng c\u00e1ch n\u00e0o? N\u1ebfu b\u1ea1n c\u0169ng \u0111ang g\u1eb7p v\u1ea5n \u0111\u1ec1 v\u1ec1 d\u1ea1ng l\u1ed7i n\u00e0y th\u00ec h\u00e3y c\u00f9ng \u0111\u1ecdc b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y c\u1ee7a Ben Computer \u0111\u1ec3 […]<\/p>\n","protected":false},"author":29,"featured_media":47312,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[45],"tags":[],"class_list":["post-47309","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wiki"],"_links":{"self":[{"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/posts\/47309","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/users\/29"}],"replies":[{"embeddable":true,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/comments?post=47309"}],"version-history":[{"count":5,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/posts\/47309\/revisions"}],"predecessor-version":[{"id":48997,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/posts\/47309\/revisions\/48997"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/media\/47312"}],"wp:attachment":[{"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/media?parent=47309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/categories?post=47309"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/tags?post=47309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}