{"id":2893,"date":"2020-02-07T03:01:46","date_gmt":"2020-02-07T03:01:46","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=2893"},"modified":"2020-02-07T03:01:46","modified_gmt":"2020-02-07T03:01:46","slug":"bad-gateway-error-code-502-troubleshooting-and-fixes","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/computer-science\/bad-gateway-error-code-502-troubleshooting-and-fixes\/","title":{"rendered":"M\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502: \u00fd ngh\u0129a v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c"},"content":{"rendered":"<h2 class=\"wp-block-heading\">M\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502: \u00dd ngh\u0129a v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c<\/h2>\n\n<h2 class=\"wp-block-heading\">M\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502 l\u00e0 g\u00ec?<\/h2>\n\n<p>M\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502 l\u00e0 l\u1ed7i HTTP cho bi\u1ebft m\u00e1y ch\u1ee7 web \u0111\u00e3 nh\u1eadn \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i kh\u00f4ng h\u1ee3p l\u1ec7 t\u1eeb m\u00e1y ch\u1ee7 \u1edf ph\u00eda tr\u00ean khi c\u1ed1 g\u1eafng th\u1ef1c hi\u1ec7n y\u00eau c\u1ea7u. S\u1ef1 c\u1ed1 n\u00e0y c\u00f3 th\u1ec3 do nhi\u1ec1u y\u1ebfu t\u1ed1 g\u00e2y ra, bao g\u1ed3m:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>M\u00e1y ch\u1ee7 qu\u00e1 t\u1ea3i<\/li>\n<li>S\u1ef1 c\u1ed1 m\u1ea1ng<\/li>\n<li>C\u00e0i \u0111\u1eb7t t\u01b0\u1eddng l\u1eeda ho\u1eb7c b\u1ea3o m\u1eadt<\/li>\n<li>B\u1ea3n ghi DNS c\u1ea5u h\u00ecnh sai<\/li>\n<li>Ph\u1ea7n m\u1ec1m l\u1ed7i th\u1eddi<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 s\u1eeda m\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502<\/h2>\n\n<p>N\u1ebfu b\u1ea1n g\u1eb7p m\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502, b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 b\u01b0\u1edbc sau \u0111\u1ec3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1:<\/p>\n\n<ol class=\"wp-block-list\">\n<li><strong>Th\u1eed t\u1ea3i l\u1ea1i trang.<\/strong> Thao t\u00e1c n\u00e0y c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft s\u1ef1 c\u1ed1 n\u1ebfu s\u1ef1 c\u1ed1 do s\u1ef1 c\u1ed1 t\u1ea1m th\u1eddi c\u1ee7a m\u00e1y ch\u1ee7 g\u00e2y ra.<\/li>\n<li><strong>Ki\u1ec3m tra k\u1ebft n\u1ed1i internet c\u1ee7a b\u1ea1n.<\/strong> \u0110\u1ea3m b\u1ea3o r\u1eb1ng m\u00e1y t\u00ednh ho\u1eb7c thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi internet v\u00e0 m\u1ea1ng c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/li>\n<li><strong>X\u00f3a b\u1ed9 nh\u1edb cache v\u00e0 cookie c\u1ee7a tr\u00ecnh duy\u1ec7t.<\/strong> Thao t\u00e1c n\u00e0y c\u00f3 th\u1ec3 gi\u00fap x\u00f3a m\u1ecdi d\u1eef li\u1ec7u b\u1ecb h\u1ecfng c\u00f3 th\u1ec3 g\u00e2y ra l\u1ed7i.<\/li>\n<li><strong>Th\u1eed truy c\u1eadp trang web t\u1eeb tr\u00ecnh duy\u1ec7t ho\u1eb7c thi\u1ebft b\u1ecb kh\u00e1c.<\/strong> Thao t\u00e1c n\u00e0y c\u00f3 th\u1ec3 gi\u00fap lo\u1ea1i tr\u1eeb m\u1ecdi s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn tr\u00ecnh duy\u1ec7t ho\u1eb7c thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>Li\u00ean h\u1ec7 v\u1edbi qu\u1ea3n tr\u1ecb vi\u00ean trang web.<\/strong> N\u1ebfu s\u1ef1 c\u1ed1 v\u1eabn ti\u1ebfp di\u1ec5n, h\u00e3y li\u00ean h\u1ec7 v\u1edbi qu\u1ea3n tr\u1ecb vi\u00ean trang web \u0111\u1ec3 b\u00e1o c\u00e1o l\u1ed7i v\u00e0 y\u00eau c\u1ea7u h\u1ed7 tr\u1ee3.<\/li>\n<\/ol>\n\n<h2 class=\"wp-block-heading\">Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn v\u00e0 gi\u1ea3i ph\u00e1p cho m\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502<\/h2>\n\n<p>M\u1ed9t s\u1ed1 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y ra m\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502 v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p ti\u1ec1m n\u0103ng c\u1ee7a ch\u00fang bao g\u1ed3m:<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>M\u00e1y ch\u1ee7 qu\u00e1 t\u1ea3i:<\/strong> Nguy\u00ean nh\u00e2n n\u00e0y c\u00f3 th\u1ec3 do l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp t\u0103ng \u0111\u1ed9t bi\u1ebfn ho\u1eb7c do m\u00e1y ch\u1ee7 kh\u00f4ng \u0111\u1ee7 m\u1ea1nh \u0111\u1ec3 x\u1eed l\u00fd t\u1ea3i. Gi\u1ea3i ph\u00e1p l\u00e0 n\u00e2ng c\u1ea5p m\u00e1y ch\u1ee7 ho\u1eb7c tri\u1ec3n khai c\u00e1c k\u1ef9 thu\u1eadt c\u00e2n b\u1eb1ng t\u1ea3i.<\/li>\n<li><strong>S\u1ef1 c\u1ed1 m\u1ea1ng:<\/strong> Nguy\u00ean nh\u00e2n n\u00e0y c\u00f3 th\u1ec3 do s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i internet gi\u1eefa m\u00e1y ch\u1ee7 web v\u00e0 m\u00e1y ch\u1ee7 \u1edf ph\u00eda tr\u00ean. Gi\u1ea3i ph\u00e1p l\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 k\u1ebft n\u1ed1i m\u1ea1ng v\u00e0 gi\u1ea3i quy\u1ebft m\u1ecdi s\u1ef1 c\u1ed1.<\/li>\n<li><strong>C\u00e0i \u0111\u1eb7t t\u01b0\u1eddng l\u1eeda ho\u1eb7c b\u1ea3o m\u1eadt:<\/strong> Nh\u1eefng c\u00e0i \u0111\u1eb7t n\u00e0y c\u00f3 th\u1ec3 ch\u1eb7n quy\u1ec1n truy c\u1eadp v\u00e0o m\u00e1y ch\u1ee7 \u1edf ph\u00eda tr\u00ean. Gi\u1ea3i ph\u00e1p l\u00e0 c\u1ea5u h\u00ecnh c\u00e0i \u0111\u1eb7t t\u01b0\u1eddng l\u1eeda v\u00e0 b\u1ea3o m\u1eadt \u0111\u1ec3 cho ph\u00e9p truy c\u1eadp.<\/li>\n<li><strong>B\u1ea3n ghi DNS c\u1ea5u h\u00ecnh sai:<\/strong> Nh\u1eefng b\u1ea3n ghi n\u00e0y c\u00f3 th\u1ec3 khi\u1ebfn m\u00e1y ch\u1ee7 web kh\u00f4ng th\u1ec3 gi\u1ea3i quy\u1ebft \u0111\u1ecba ch\u1ec9 IP c\u1ee7a m\u00e1y ch\u1ee7 \u1edf ph\u00eda tr\u00ean. Gi\u1ea3i ph\u00e1p l\u00e0 s\u1eeda c\u00e1c b\u1ea3n ghi DNS.<\/li>\n<li><strong>Ph\u1ea7n m\u1ec1m l\u1ed7i th\u1eddi:<\/strong> Ph\u1ea7n m\u1ec1m l\u1ed7i th\u1eddi c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 c\u1ed1 v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa m\u00e1y ch\u1ee7 web v\u00e0 m\u00e1y ch\u1ee7 \u1edf ph\u00eda tr\u00ean. Gi\u1ea3i ph\u00e1p l\u00e0 c\u1eadp nh\u1eadt ph\u1ea7n m\u1ec1m l\u00ean phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">M\u1eb9o b\u1ed5 sung \u0111\u1ec3 gi\u1ea3i quy\u1ebft m\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502<\/h2>\n\n<ul class=\"wp-block-list\">\n<li><strong>Ki\u1ec3m tra Cloudflare Ray ID.<\/strong> ID n\u00e0y c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh m\u00e1y ch\u1ee7 c\u1ee5 th\u1ec3 \u0111ang g\u1eb7p s\u1ef1 c\u1ed1.<\/li>\n<li><strong>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t web.<\/strong> C\u00f4ng c\u1ee5 n\u00e0y c\u00f3 th\u1ec3 gi\u00fap gi\u00e1m s\u00e1t th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a trang web, \u0111\u1ed3ng th\u1eddi c\u1ea3nh b\u00e1o b\u1ea1n v\u1ec1 m\u1ecdi s\u1ef1 c\u1ed1.<\/li>\n<li><strong>Tri\u1ec3n khai b\u1ed9 nh\u1edb \u0111\u1ec7m.<\/strong> B\u1ed9 nh\u1edb \u0111\u1ec7m c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3m t\u1ea3i tr\u00ean m\u00e1y ch\u1ee7 v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t trang web.<\/li>\n<li><strong>Li\u00ean h\u1ec7 v\u1edbi nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef c\u1ee7a b\u1ea1n.<\/strong> N\u1ebfu b\u1ea1n kh\u00f4ng th\u1ec3 t\u1ef1 m\u00ecnh gi\u1ea3i quy\u1ebft s\u1ef1 c\u1ed1, h\u00e3y li\u00ean h\u1ec7 v\u1edbi nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef c\u1ee7a m\u00ecnh \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>M\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502: \u00dd ngh\u0129a v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c M\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502 l\u00e0 g\u00ec? M\u00e3 l\u1ed7i c\u1ed5ng x\u1ea5u 502 l\u00e0 l\u1ed7i HTTP cho bi\u1ebft m\u00e1y ch\u1ee7&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3325],"tags":[5697,5692,5693,5698,5686],"class_list":["post-2893","post","type-post","status-publish","format-standard","hentry","category-computer-science","tag-bad-gateway","tag-http-error","tag-server-error","tag-webmaster","tag-troubleshooting"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/2893","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=2893"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/2893\/revisions"}],"predecessor-version":[{"id":2894,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/2893\/revisions\/2894"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=2893"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=2893"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=2893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}