{"id":26499,"date":"2025-10-28T15:42:59","date_gmt":"2025-10-28T07:42:59","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-tw\/how-to-fix-502-errors-on-japan-servers\/"},"modified":"2025-10-28T15:56:17","modified_gmt":"2025-10-28T07:56:17","slug":"how-to-fix-502-errors-on-japan-servers","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-502-errors-on-japan-servers\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9\u65e5\u672c\u4f3a\u670d\u5668\u7684502\u932f\u8aa4"},"content":{"rendered":"<p>\u5728\u7ba1\u7406<a href=\"https:\/\/www.varidata.com\/zh-tw\/server\/hk\/cn2\/\" target=\"_blank\">\u65e5\u672c\u4f3a\u670d\u5668<\/a>\u6642\uff0c\u9047\u5230502 Bad Gateway<a href=\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-dns-not-responding-on-us-servers\/\" target=\"_blank\">\u932f\u8aa4<\/a>\u53ef\u80fd\u6703\u56b4\u91cd\u5f71\u97ff\u670d\u52d9\u53ef\u7528\u6027\u548c\u4f7f\u7528\u8005\u9ad4\u9a57\u3002\u672c\u7d9c\u5408\u6307\u5357\u6df1\u5165\u63a2\u8a0e\u4e86\u5728\u65e5\u672c\u4f3a\u670d\u5668\u79df\u7528\u548c\u4f3a\u670d\u5668\u8a17\u7ba1\u74b0\u5883\u4e2d\u8a3a\u65b7\u548c\u89e3\u6c7a502\u932f\u8aa4\u7684\u65b9\u6cd5\u3002\u7121\u8ad6\u60a8\u662f\u5728\u7ba1\u7406\u5c0f\u578b\u958b\u767c\u4f3a\u670d\u5668\u9084\u662f\u904b\u71df\u5927\u898f\u6a21\u751f\u7522\u74b0\u5883\uff0c\u4e86\u89e3\u9019\u4e9b\u932f\u8aa4\u5c0d\u65bc\u5728\u4e9e\u6d32\u5e02\u5834\u7dad\u6301\u6700\u4f73\u670d\u52d9\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2><strong>\u7406\u89e3502 Bad Gateway\u932f\u8aa4<\/strong><\/h2>\n<p>502 Bad Gateway\u932f\u8aa4\u767c\u751f\u5728\u4f5c\u70ba\u7db2\u95dc\u6216\u4ee3\u7406\u7684\u4f3a\u670d\u5668\u5f9e\u4e0a\u6e38\u4f3a\u670d\u5668\u6536\u5230\u7121\u6548\u56de\u61c9\u6642\u3002\u5728\u65e5\u672c\u4f3a\u670d\u5668\u74b0\u5883\u4e2d\uff0c\u9019\u4e9b\u932f\u8aa4\u901a\u5e38\u7531\u65bc\u7368\u7279\u7684\u5340\u57df\u7db2\u8def\u67b6\u69cb\u548c\u9ad8\u5bc6\u5ea6\u8cc7\u6599\u4e2d\u5fc3\u74b0\u5883\u800c\u51fa\u73fe\u3002\u8a72\u932f\u8aa4\u901a\u5e38\u5728\u524d\u7aef\u4f3a\u670d\u5668\uff08\u901a\u5e38\u662fNginx\u6216Apache\uff09\u548c\u5f8c\u7aef\u4f3a\u670d\u5668\uff08\u5982PHP-FPM\u6216\u61c9\u7528\u7a0b\u5f0f\u4f3a\u670d\u5668\uff09\u4e4b\u9593\u7684\u901a\u8a0a\u4e2d\u65b7\u6642\u51fa\u73fe\u3002<\/p>\n<p>\u65e5\u672c\u7db2\u8def\u57fa\u790e\u8a2d\u65bd\u7684\u8907\u96dc\u6027\u589e\u52a0\u4e86\u5e7e\u500b\u8003\u616e\u5c64\u9762\uff1a<\/p>\n<ul>\n<li>\u65e5\u672c\u90fd\u5e02\u5340\u7279\u6709\u7684\u9ad8\u5bc6\u5ea6\u8cc7\u6599\u4e2d\u5fc3\u74b0\u5883<\/li>\n<li>\u65e5\u672c\u570b\u5167\u7279\u6709\u7684ISP\u5c0d\u7b49\u5b89\u6392<\/li>\n<li>\u5f71\u97ff\u4f3a\u670d\u5668\u914d\u7f6e\u7684\u7279\u5b9a\u76e3\u7ba1\u5408\u898f\u8981\u6c42<\/li>\n<li>\u71df\u696d\u6642\u9593\uff08JST\uff09\u671f\u9593\u7684\u5340\u57df\u6d41\u91cf\u6a21\u5f0f<\/li>\n<\/ul>\n<h2><strong>\u65e5\u672c\u4f3a\u670d\u5668\u74b0\u5883\u4e2d\u7684\u5e38\u898b\u89f8\u767c\u56e0\u7d20<\/strong><\/h2>\n<p>\u65e5\u672c\u4f3a\u670d\u5668\u74b0\u5883\u5e36\u4f86\u4e86\u53ef\u80fd\u89f8\u767c502\u932f\u8aa4\u7684\u7368\u7279\u6311\u6230\u3002\u4e86\u89e3\u9019\u4e9b\u5177\u9ad4\u89f8\u767c\u56e0\u7d20\u5c0d\u65bc\u6709\u6548\u6545\u969c\u6392\u9664\u81f3\u95dc\u91cd\u8981\uff1a<\/p>\n<ul>\n<li>\u570b\u969b\u9023\u63a5\u4e4b\u9593\u7684\u7db2\u8def\u5ef6\u9072\uff1a\n<ul>\n<li>\u8de8\u592a\u5e73\u6d0b\u6d77\u7e9c\u64c1\u585e<\/li>\n<li>\u4e3b\u8981\u4e9e\u6d32\u6a1e\u7d10\u4e4b\u9593\u7684\u8def\u7531\u6548\u7387\u4f4e\u4e0b<\/li>\n<li>\u65e5\u672c\u5883\u5167\u7684\u6700\u5f8c\u4e00\u82f1\u91cc\u9023\u63a5\u554f\u984c<\/li>\n<\/ul>\n<\/li>\n<li>\u65e5\u672c\u71df\u696d\u6642\u9593\u9ad8\u5cf0\u671f\u7684\u4e0a\u6e38\u4f3a\u670d\u5668\u8d85\u8f09\uff1a\n<ul>\n<li>\u65e9\u6668\u9ad8\u5cf0\uff089:00-11:00 JST\uff09<\/li>\n<li>\u5348\u4f11\u6d41\u91cf\u9ad8\u5cf0\uff0812:00-13:00 JST\uff09<\/li>\n<li>\u508d\u665a\u71df\u696d\u7d50\u675f\uff0817:00-19:00 JST\uff09<\/li>\n<\/ul>\n<\/li>\n<li>\u53cd\u5411\u4ee3\u7406\u8a2d\u7f6e\u914d\u7f6e\u932f\u8aa4\uff1a\n<ul>\n<li>\u8d85\u6642\u914d\u7f6e<\/li>\n<li>\u7de9\u885d\u5340\u5927\u5c0f\u9650\u5236<\/li>\n<li>\u4fdd\u6301\u9023\u63a5\u53c3\u6578<\/li>\n<\/ul>\n<\/li>\n<li>PHP-FPM\u7a0b\u5e8f\u7ba1\u7406\u554f\u984c\uff1a\n<ul>\n<li>\u5de5\u4f5c\u6c60\u8017\u76e1<\/li>\n<li>\u8a18\u61b6\u9ad4\u5206\u914d\u554f\u984c<\/li>\n<li>\u7a0b\u5e8f\u751f\u547d\u9031\u671f\u7ba1\u7406<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u6280\u8853\u8a3a\u65b7\u6d41\u7a0b<\/strong><\/h2>\n<p>\u5be6\u65bd\u7cfb\u7d71\u5316\u7684\u8a3a\u65b7\u6d41\u7a0b\u5c0d\u65bc\u78ba\u5b9a502\u932f\u8aa4\u7684\u6839\u672c\u539f\u56e0\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u8a73\u7d30\u7684\u6545\u969c\u6392\u9664\u65b9\u6cd5\uff1a<\/p>\n<ol>\n<li>\u6aa2\u67e5Nginx\/Apache\u932f\u8aa4\u65e5\u8a8c\uff1a\n<pre>\r\n# Nginx\u65e5\u8a8c\r\ntail -f \/var\/log\/nginx\/error.log\r\n\r\n# Apache\u65e5\u8a8c\r\ntail -f \/var\/log\/apache2\/error.log\r\n\r\n# \u5373\u6642\u76e3\u63a7\r\nwatch -n 1 'grep \"502\" \/var\/log\/nginx\/error.log'\r\n        <\/pre>\n<\/li>\n<li>\u6aa2\u67e5PHP-FPM\u72c0\u614b\u548c\u914d\u7f6e\uff1a\n<pre>\r\n# \u670d\u52d9\u72c0\u614b\u6aa2\u67e5\r\nsystemctl status php-fpm\r\n\r\n# \u914d\u7f6e\u9a57\u8b49\r\nphp-fpm -t\r\n\r\n# \u7a0b\u5e8f\u5217\u8868\u6aa2\u67e5\r\nps aux | grep php-fpm\r\n        <\/pre>\n<\/li>\n<li>\u4f7f\u7528\u8a73\u7d30\u6307\u6a19\u76e3\u63a7\u4f3a\u670d\u5668\u8cc7\u6e90\uff1a\n<pre>\r\n# \u7cfb\u7d71\u8cc7\u6e90\u6982\u89bd\r\ntop -b -n 1\r\n\r\n# \u8a18\u61b6\u9ad4\u4f7f\u7528\u8a73\u60c5\r\nfree -m\r\n\r\n# \u78c1\u789fI\/O\u7d71\u8a08\r\niostat -x 1 5\r\n\r\n# \u7db2\u8def\u9023\u63a5\u6e2c\u8a66\r\ntraceroute your-upstream-server\r\n    <\/pre>\n<\/li>\n<\/ol>\n<h2><strong>\u4f3a\u670d\u5668\u7aef\u89e3\u6c7a\u65b9\u6848<\/strong><\/h2>\n<p>\u5be6\u65bd\u7a69\u5065\u7684\u4f3a\u670d\u5668\u7aef\u89e3\u6c7a\u65b9\u6848\u9700\u8981\u63a1\u7528\u7cfb\u7d71\u5316\u7684\u914d\u7f6e\u548c\u6700\u4f73\u5316\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u95dc\u9375\u9818\u57df\u7684\u5168\u9762\u5206\u6790\uff1a<\/p>\n<h3>Nginx\u914d\u7f6e\u6700\u4f73\u5316<\/h3>\n<p>\u4f7f\u7528\u9019\u4e9b\u6548\u80fd\u6700\u4f73\u5316\u8a2d\u7f6e\u4f86\u5fae\u8abf\u60a8\u7684Nginx\u914d\u7f6e\uff1a<\/p>\n<pre>\r\n# Nginx\u4e3b\u8981\u914d\u7f6e\u6700\u4f73\u5316\r\nworker_processes auto;\r\nworker_rlimit_nofile 65535;\r\nevents {\r\n    worker_connections 65535;\r\n    multi_accept on;\r\n    use epoll;\r\n}\r\n\r\n# \u7de9\u885d\u5340\u5927\u5c0f\u914d\u7f6e\r\nhttp {\r\n    fastcgi_buffers 16 16k;\r\n    fastcgi_buffer_size 32k;\r\n    proxy_buffer_size 128k;\r\n    proxy_buffers 4 256k;\r\n    proxy_busy_buffers_size 256k;\r\n    \r\n    # \u8d85\u6642\u8a2d\u7f6e\r\n    fastcgi_connect_timeout 60s;\r\n    fastcgi_send_timeout 60s;\r\n    fastcgi_read_timeout 60s;\r\n    \r\n    # \u4fdd\u6301\u9023\u63a5\u8a2d\u7f6e\r\n    keepalive_timeout 65;\r\n    keepalive_requests 100;\r\n}\r\n<\/pre>\n<h3>PHP-FPM\u6700\u4f73\u5316<\/h3>\n<p>\u91dd\u5c0d\u65e5\u672c\u6d41\u91cf\u6a21\u5f0f\u6700\u4f73\u5316PHP-FPM\u914d\u7f6e\uff1a<\/p>\n<pre>\r\n; PHP-FPM\u6c60\u914d\u7f6e\r\npm = dynamic\r\npm.max_children = 50\r\npm.start_servers = 5\r\npm.min_spare_servers = 5\r\npm.max_spare_servers = 35\r\npm.max_requests = 500\r\n\r\n; \u7a0b\u5e8f\u7ba1\u7406\r\nrequest_terminate_timeout = 60s\r\nmax_execution_time = 30\r\nmemory_limit = 256M\r\n<\/pre>\n<h2><strong>\u7db2\u8def\u6700\u4f73\u5316\u6280\u8853<\/strong><\/h2>\n<p>\u65e5\u672c\u7db2\u8def\u57fa\u790e\u8a2d\u65bd\u9700\u8981\u7279\u5b9a\u7684\u6700\u4f73\u5316\u7b56\u7565\u4f86\u4fdd\u6301\u6700\u4f73\u6548\u80fd\uff1a<\/p>\n<h3>TCP\/IP\u5806\u758a\u8abf\u512a<\/h3>\n<pre>\r\n# \u6dfb\u52a0\u5230\/etc\/sysctl.conf\r\nnet.ipv4.tcp_fin_timeout = 30\r\nnet.ipv4.tcp_keepalive_time = 1200\r\nnet.ipv4.tcp_keepalive_probes = 5\r\nnet.ipv4.tcp_keepalive_intvl = 15\r\nnet.core.somaxconn = 65535\r\nnet.ipv4.tcp_max_syn_backlog = 65535\r\n<\/pre>\n<h3>DNS\u6700\u4f73\u5316<\/h3>\n<ul>\n<li>\u914d\u7f6e\u672c\u5730DNS\u89e3\u6790\u5668\uff1a\n<pre>\r\n# \/etc\/resolv.conf\u6700\u4f73\u5316\r\nnameserver 8.8.8.8\r\nnameserver 1.1.1.1\r\noptions timeout:1 attempts:3\r\n        <\/pre>\n<\/li>\n<li>\u5be6\u65bdDNS\u5feb\u53d6\uff1a\n<pre>\r\n# \u5b89\u88dd\u4e26\u914d\u7f6ednsmasq\r\napt-get install dnsmasq\r\nsystemctl enable dnsmasq\r\nsystemctl start dnsmasq\r\n        <\/pre>\n<\/li>\n<\/ul>\n<h2><strong>\u9032\u968e\u76e3\u63a7\u89e3\u6c7a\u65b9\u6848<\/strong><\/h2>\n<p>\u5be6\u65bd\u5168\u9762\u76e3\u63a7\u4ee5\u9810\u9632\u548c\u5feb\u901f\u56de\u61c9502\u932f\u8aa4\uff1a<\/p>\n<h3>\u76e3\u63a7\u5806\u758a\u5be6\u65bd<\/h3>\n<ul>\n<li>\u4f3a\u670d\u5668\u76e3\u63a7\uff1a\n<ul>\n<li>\u914d\u7f6ePrometheus\u9032\u884c\u6307\u6a19\u6536\u96c6<\/li>\n<li>\u8a2d\u7f6eGrafana\u5100\u8868\u677f\u9032\u884c\u8996\u89ba\u5316<\/li>\n<li>\u901a\u904ePagerDuty\u6216\u985e\u4f3c\u670d\u52d9\u5be6\u65bd\u8b66\u5831<\/li>\n<\/ul>\n<\/li>\n<li>\u61c9\u7528\u7a0b\u5f0f\u6548\u80fd\u76e3\u63a7\uff1a\n<ul>\n<li>\u4f7f\u7528New Relic\u6216Datadog\u9032\u884c\u61c9\u7528\u7a0b\u5f0f\u6d1e\u5bdf<\/li>\n<li>\u91dd\u5c0d\u7279\u5b9a\u4f7f\u7528\u6848\u4f8b\u7684\u81ea\u8a02\u76e3\u63a7\u8173\u672c<\/li>\n<li>\u4f7f\u7528ELK\u5806\u758a\u9032\u884c\u65e5\u8a8c\u805a\u5408<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u707d\u96e3\u5fa9\u539f\u8a08\u5283<\/strong><\/h2>\n<p>\u5efa\u7acb\u91dd\u5c0d\u65e5\u672c\u4f3a\u670d\u5668\u74b0\u5883\u7684\u7a69\u5065\u707d\u96e3\u5fa9\u539f\u7a0b\u5e8f\uff1a<\/p>\n<ol>\n<li>\u5099\u4efd\u7b56\u7565\uff1a\n<ul>\n<li>\u6bcf\u5c0f\u6642\u589e\u91cf\u5099\u4efd<\/li>\n<li>\u6bcf\u65e5\u5b8c\u6574\u5099\u4efd<\/li>\n<li>\u6bcf\u9031\u7570\u5730\u5099\u4efd<\/li>\n<\/ul>\n<\/li>\n<li>\u6545\u969c\u8f49\u79fb\u7cfb\u7d71\uff1a\n<ul>\n<li>\u914d\u7f6e\u8cc7\u6599\u4e2d\u5fc3\u4e4b\u9593\u7684\u81ea\u52d5\u6545\u969c\u8f49\u79fb<\/li>\n<li>\u5be6\u65bd\u5730\u7406\u8ca0\u8f09\u5e73\u8861<\/li>\n<li>\u7dad\u8b77\u71b1\u5099\u7528\u4f3a\u670d\u5668<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u70ba\u4e86\u5728\u65e5\u672c\u4f3a\u670d\u5668\u79df\u7528\u548c\u4f3a\u670d\u5668\u8a17\u7ba1\u74b0\u5883\u4e2d\u7372\u5f97\u6700\u4f73\u6548\u80fd\uff0c\u5b9a\u671f\u7dad\u8b77\u548c\u4e3b\u52d5\u76e3\u63a7\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u5be6\u65bd\u9019\u4e9b\u6280\u8853\u89e3\u6c7a\u65b9\u6848\u4e26\u4fdd\u6301\u8b66\u89ba\u76e3\u7763\uff0c\u60a8\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11502\u932f\u8aa4\u7684\u767c\u751f\uff0c\u78ba\u4fdd\u5728\u65e5\u672c\u5e02\u5834\u63d0\u4f9b\u53ef\u9760\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u7ba1\u7406\u65e5\u672c\u4f3a\u670d\u5668\u6642\uff0c\u9047\u5230502 Bad Gateway\u932f\u8aa4\u53ef\u80fd\u6703\u56b4\u91cd\u5f71\u97ff\u670d\u52d9\u53ef\u7528\u6027\u548c\u4f7f\u7528\u8005\u9ad4\u9a57\u3002\u672c\u7d9c\u5408\u6307\u5357\u6df1\u5165 [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-502-errors-on-japan-servers\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":11,"featured_media":26496,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[268],"tags":[],"class_list":["post-26499","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-tc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u5982\u4f55\u4fee\u5fa9\u65e5\u672c\u4f3a\u670d\u5668\u7684502\u932f\u8aa4<\/title>\n<meta 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