{"id":26498,"date":"2025-10-28T15:42:59","date_gmt":"2025-10-28T07:42:59","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/how-to-fix-502-errors-on-japan-servers\/"},"modified":"2025-10-28T15:57:42","modified_gmt":"2025-10-28T07:57:42","slug":"how-to-fix-502-errors-on-japan-servers","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/knowledge\/how-to-fix-502-errors-on-japan-servers\/","title":{"rendered":"\u5982\u4f55\u4fee\u590d\u65e5\u672c\u670d\u52a1\u5668\u7684502\u9519\u8bef"},"content":{"rendered":"<p>\u5728\u7ba1\u7406<a href=\"https:\/\/www.varidata.com\/zh-cn\/server\/hk\/cn2\/\" target=\"_blank\">\u65e5\u672c\u670d\u52a1\u5668<\/a>\u65f6\uff0c\u9047\u5230502 Bad Gateway<a href=\"https:\/\/www.varidata.com\/zh-cn\/knowledge\/how-to-fix-dns-not-responding-on-us-servers\/\" target=\"_blank\">\u9519\u8bef<\/a>\u53ef\u80fd\u4f1a\u4e25\u91cd\u5f71\u54cd\u670d\u52a1\u53ef\u7528\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002\u672c\u7efc\u5408\u6307\u5357\u6df1\u5165\u63a2\u8ba8\u4e86\u5728\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u548c\u670d\u52a1\u5668\u6258\u7ba1\u73af\u5883\u4e2d\u8bca\u65ad\u548c\u89e3\u51b3502\u9519\u8bef\u7684\u65b9\u6cd5\u3002\u65e0\u8bba\u60a8\u662f\u5728\u7ba1\u7406\u5c0f\u578b\u5f00\u53d1\u670d\u52a1\u5668\u8fd8\u662f\u8fd0\u8425\u5927\u89c4\u6a21\u751f\u4ea7\u73af\u5883\uff0c\u4e86\u89e3\u8fd9\u4e9b\u9519\u8bef\u5bf9\u4e8e\u5728\u4e9a\u6d32\u5e02\u573a\u7ef4\u6301\u6700\u4f73\u670d\u52a1\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h2><strong>\u7406\u89e3502 Bad Gateway\u9519\u8bef<\/strong><\/h2>\n<p>502 Bad Gateway\u9519\u8bef\u53d1\u751f\u5728\u4f5c\u4e3a\u7f51\u5173\u6216\u4ee3\u7406\u7684\u670d\u52a1\u5668\u4ece\u4e0a\u6e38\u670d\u52a1\u5668\u6536\u5230\u65e0\u6548\u54cd\u5e94\u65f6\u3002\u5728\u65e5\u672c\u670d\u52a1\u5668\u73af\u5883\u4e2d\uff0c\u8fd9\u4e9b\u9519\u8bef\u901a\u5e38\u7531\u4e8e\u72ec\u7279\u7684\u533a\u57df\u7f51\u7edc\u67b6\u6784\u548c\u9ad8\u5bc6\u5ea6\u6570\u636e\u4e2d\u5fc3\u73af\u5883\u800c\u51fa\u73b0\u3002\u8be5\u9519\u8bef\u901a\u5e38\u5728\u524d\u7aef\u670d\u52a1\u5668\uff08\u901a\u5e38\u662fNginx\u6216Apache\uff09\u548c\u540e\u7aef\u670d\u52a1\u5668\uff08\u5982PHP-FPM\u6216\u5e94\u7528\u670d\u52a1\u5668\uff09\u4e4b\u95f4\u7684\u901a\u4fe1\u4e2d\u65ad\u65f6\u51fa\u73b0\u3002<\/p>\n<p>\u65e5\u672c\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd\u7684\u590d\u6742\u6027\u589e\u52a0\u4e86\u51e0\u4e2a\u8003\u8651\u5c42\u9762\uff1a<\/p>\n<ul>\n<li>\u65e5\u672c\u90fd\u5e02\u533a\u7279\u6709\u7684\u9ad8\u5bc6\u5ea6\u6570\u636e\u4e2d\u5fc3\u73af\u5883<\/li>\n<li>\u65e5\u672c\u56fd\u5185\u7279\u6709\u7684ISP\u5bf9\u7b49\u5b89\u6392<\/li>\n<li>\u5f71\u54cd\u670d\u52a1\u5668\u914d\u7f6e\u7684\u7279\u5b9a\u76d1\u7ba1\u5408\u89c4\u8981\u6c42<\/li>\n<li>\u8425\u4e1a\u65f6\u95f4\uff08JST\uff09\u671f\u95f4\u7684\u533a\u57df\u6d41\u91cf\u6a21\u5f0f<\/li>\n<\/ul>\n<h2><strong>\u65e5\u672c\u670d\u52a1\u5668\u73af\u5883\u4e2d\u7684\u5e38\u89c1\u89e6\u53d1\u56e0\u7d20<\/strong><\/h2>\n<p>\u65e5\u672c\u670d\u52a1\u5668\u73af\u5883\u5e26\u6765\u4e86\u53ef\u80fd\u89e6\u53d1502\u9519\u8bef\u7684\u72ec\u7279\u6311\u6218\u3002\u4e86\u89e3\u8fd9\u4e9b\u5177\u4f53\u89e6\u53d1\u56e0\u7d20\u5bf9\u4e8e\u6709\u6548\u6545\u969c\u6392\u9664\u81f3\u5173\u91cd\u8981\uff1a<\/p>\n<ul>\n<li>\u56fd\u9645\u8fde\u63a5\u4e4b\u95f4\u7684\u7f51\u7edc\u5ef6\u8fdf\uff1a\n<ul>\n<li>\u8de8\u592a\u5e73\u6d0b\u6d77\u7f06\u62e5\u5835<\/li>\n<li>\u4e3b\u8981\u4e9a\u6d32\u67a2\u7ebd\u4e4b\u95f4\u7684\u8def\u7531\u6548\u7387\u4f4e\u4e0b<\/li>\n<li>\u65e5\u672c\u5883\u5185\u7684\u6700\u540e\u4e00\u82f1\u91cc\u8fde\u63a5\u95ee\u9898<\/li>\n<\/ul>\n<\/li>\n<li>\u65e5\u672c\u8425\u4e1a\u65f6\u95f4\u9ad8\u5cf0\u671f\u7684\u4e0a\u6e38\u670d\u52a1\u5668\u8d85\u8f7d\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\u8425\u4e1a\u7ed3\u675f\uff0817:00-19:00 JST\uff09<\/li>\n<\/ul>\n<\/li>\n<li>\u53cd\u5411\u4ee3\u7406\u8bbe\u7f6e\u914d\u7f6e\u9519\u8bef\uff1a\n<ul>\n<li>\u8d85\u65f6\u914d\u7f6e<\/li>\n<li>\u7f13\u51b2\u533a\u5927\u5c0f\u9650\u5236<\/li>\n<li>\u4fdd\u6301\u8fde\u63a5\u53c2\u6570<\/li>\n<\/ul>\n<\/li>\n<li>PHP-FPM\u8fdb\u7a0b\u7ba1\u7406\u95ee\u9898\uff1a\n<ul>\n<li>\u5de5\u4f5c\u6c60\u8017\u5c3d<\/li>\n<li>\u5185\u5b58\u5206\u914d\u95ee\u9898<\/li>\n<li>\u8fdb\u7a0b\u751f\u547d\u5468\u671f\u7ba1\u7406<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u6280\u672f\u8bca\u65ad\u6d41\u7a0b<\/strong><\/h2>\n<p>\u5b9e\u65bd\u7cfb\u7edf\u5316\u7684\u8bca\u65ad\u6d41\u7a0b\u5bf9\u4e8e\u786e\u5b9a502\u9519\u8bef\u7684\u6839\u672c\u539f\u56e0\u81f3\u5173\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u6545\u969c\u6392\u9664\u65b9\u6cd5\uff1a<\/p>\n<ol>\n<li>\u68c0\u67e5Nginx\/Apache\u9519\u8bef\u65e5\u5fd7\uff1a\n<pre>\r\n# Nginx\u65e5\u5fd7\r\ntail -f \/var\/log\/nginx\/error.log\r\n\r\n# Apache\u65e5\u5fd7\r\ntail -f \/var\/log\/apache2\/error.log\r\n\r\n# \u5b9e\u65f6\u76d1\u63a7\r\nwatch -n 1 'grep \"502\" \/var\/log\/nginx\/error.log'\r\n        <\/pre>\n<\/li>\n<li>\u68c0\u67e5PHP-FPM\u72b6\u6001\u548c\u914d\u7f6e\uff1a\n<pre>\r\n# \u670d\u52a1\u72b6\u6001\u68c0\u67e5\r\nsystemctl status php-fpm\r\n\r\n# \u914d\u7f6e\u9a8c\u8bc1\r\nphp-fpm -t\r\n\r\n# \u8fdb\u7a0b\u5217\u8868\u68c0\u67e5\r\nps aux | grep php-fpm\r\n        <\/pre>\n<\/li>\n<li>\u4f7f\u7528\u8be6\u7ec6\u6307\u6807\u76d1\u63a7\u670d\u52a1\u5668\u8d44\u6e90\uff1a\n<pre>\r\n# \u7cfb\u7edf\u8d44\u6e90\u6982\u89c8\r\ntop -b -n 1\r\n\r\n# \u5185\u5b58\u4f7f\u7528\u8be6\u60c5\r\nfree -m\r\n\r\n# \u78c1\u76d8I\/O\u7edf\u8ba1\r\niostat -x 1 5\r\n\r\n# \u7f51\u7edc\u8fde\u63a5\u6d4b\u8bd5\r\ntraceroute your-upstream-server\r\n    <\/pre>\n<\/li>\n<\/ol>\n<h2><strong>\u670d\u52a1\u5668\u7aef\u89e3\u51b3\u65b9\u6848<\/strong><\/h2>\n<p>\u5b9e\u65bd\u7a33\u5065\u7684\u670d\u52a1\u5668\u7aef\u89e3\u51b3\u65b9\u6848\u9700\u8981\u91c7\u7528\u7cfb\u7edf\u5316\u7684\u914d\u7f6e\u548c\u4f18\u5316\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u5173\u952e\u9886\u57df\u7684\u5168\u9762\u5206\u6790\uff1a<\/p>\n<h3>Nginx\u914d\u7f6e\u4f18\u5316<\/h3>\n<p>\u4f7f\u7528\u8fd9\u4e9b\u6027\u80fd\u4f18\u5316\u8bbe\u7f6e\u6765\u5fae\u8c03\u60a8\u7684Nginx\u914d\u7f6e\uff1a<\/p>\n<pre>\r\n# Nginx\u4e3b\u8981\u914d\u7f6e\u4f18\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# \u7f13\u51b2\u533a\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\u65f6\u8bbe\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\u8fde\u63a5\u8bbe\u7f6e\r\n    keepalive_timeout 65;\r\n    keepalive_requests 100;\r\n}\r\n<\/pre>\n<h3>PHP-FPM\u4f18\u5316<\/h3>\n<p>\u9488\u5bf9\u65e5\u672c\u6d41\u91cf\u6a21\u5f0f\u4f18\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; \u8fdb\u7a0b\u7ba1\u7406\r\nrequest_terminate_timeout = 60s\r\nmax_execution_time = 30\r\nmemory_limit = 256M\r\n<\/pre>\n<h2><strong>\u7f51\u7edc\u4f18\u5316\u6280\u672f<\/strong><\/h2>\n<p>\u65e5\u672c\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd\u9700\u8981\u7279\u5b9a\u7684\u4f18\u5316\u7b56\u7565\u6765\u4fdd\u6301\u6700\u4f73\u6027\u80fd\uff1a<\/p>\n<h3>TCP\/IP\u6808\u8c03\u4f18<\/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\u4f18\u5316<\/h3>\n<ul>\n<li>\u914d\u7f6e\u672c\u5730DNS\u89e3\u6790\u5668\uff1a\n<pre>\r\n# \/etc\/resolv.conf\u4f18\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>\u5b9e\u65bdDNS\u7f13\u5b58\uff1a\n<pre>\r\n# \u5b89\u88c5\u5e76\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>\u9ad8\u7ea7\u76d1\u63a7\u89e3\u51b3\u65b9\u6848<\/strong><\/h2>\n<p>\u5b9e\u65bd\u5168\u9762\u76d1\u63a7\u4ee5\u9884\u9632\u548c\u5feb\u901f\u54cd\u5e94502\u9519\u8bef\uff1a<\/p>\n<h3>\u76d1\u63a7\u6808\u5b9e\u65bd<\/h3>\n<ul>\n<li>\u670d\u52a1\u5668\u76d1\u63a7\uff1a\n<ul>\n<li>\u914d\u7f6ePrometheus\u8fdb\u884c\u6307\u6807\u6536\u96c6<\/li>\n<li>\u8bbe\u7f6eGrafana\u4eea\u8868\u677f\u8fdb\u884c\u53ef\u89c6\u5316<\/li>\n<li>\u901a\u8fc7PagerDuty\u6216\u7c7b\u4f3c\u670d\u52a1\u5b9e\u65bd\u8b66\u62a5<\/li>\n<\/ul>\n<\/li>\n<li>\u5e94\u7528\u6027\u80fd\u76d1\u63a7\uff1a\n<ul>\n<li>\u4f7f\u7528New Relic\u6216Datadog\u8fdb\u884c\u5e94\u7528\u6d1e\u5bdf<\/li>\n<li>\u9488\u5bf9\u7279\u5b9a\u7528\u4f8b\u7684\u81ea\u5b9a\u4e49\u76d1\u63a7\u811a\u672c<\/li>\n<li>\u4f7f\u7528ELK\u6808\u8fdb\u884c\u65e5\u5fd7\u805a\u5408<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><strong>\u707e\u96be\u6062\u590d\u8ba1\u5212<\/strong><\/h2>\n<p>\u5efa\u7acb\u9488\u5bf9\u65e5\u672c\u670d\u52a1\u5668\u73af\u5883\u7684\u7a33\u5065\u707e\u96be\u6062\u590d\u7a0b\u5e8f\uff1a<\/p>\n<ol>\n<li>\u5907\u4efd\u7b56\u7565\uff1a\n<ul>\n<li>\u6bcf\u5c0f\u65f6\u589e\u91cf\u5907\u4efd<\/li>\n<li>\u6bcf\u65e5\u5b8c\u6574\u5907\u4efd<\/li>\n<li>\u6bcf\u5468\u5f02\u5730\u5907\u4efd<\/li>\n<\/ul>\n<\/li>\n<li>\u6545\u969c\u8f6c\u79fb\u7cfb\u7edf\uff1a\n<ul>\n<li>\u914d\u7f6e\u6570\u636e\u4e2d\u5fc3\u4e4b\u95f4\u7684\u81ea\u52a8\u6545\u969c\u8f6c\u79fb<\/li>\n<li>\u5b9e\u65bd\u5730\u7406\u8d1f\u8f7d\u5747\u8861<\/li>\n<li>\u7ef4\u62a4\u70ed\u5907\u7528\u670d\u52a1\u5668<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u4e3a\u4e86\u5728\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u548c\u670d\u52a1\u5668\u6258\u7ba1\u73af\u5883\u4e2d\u83b7\u5f97\u6700\u4f73\u6027\u80fd\uff0c\u5b9a\u671f\u7ef4\u62a4\u548c\u4e3b\u52a8\u76d1\u63a7\u81f3\u5173\u91cd\u8981\u3002\u901a\u8fc7\u5b9e\u65bd\u8fd9\u4e9b\u6280\u672f\u89e3\u51b3\u65b9\u6848\u5e76\u4fdd\u6301\u8b66\u60d5\u76d1\u7763\uff0c\u60a8\u53ef\u4ee5\u663e\u8457\u51cf\u5c11502\u9519\u8bef\u7684\u53d1\u751f\uff0c\u786e\u4fdd\u5728\u65e5\u672c\u5e02\u573a\u63d0\u4f9b\u53ef\u9760\u7684\u670d\u52a1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u7ba1\u7406\u65e5\u672c\u670d\u52a1\u5668\u65f6\uff0c\u9047\u5230502 Bad Gateway\u9519\u8bef\u53ef\u80fd\u4f1a\u4e25\u91cd\u5f71\u54cd\u670d\u52a1\u53ef\u7528\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002\u672c\u7efc\u5408\u6307\u5357\u6df1\u5165\u63a2\u8ba8\u4e86\u5728\u65e5\u672c\u670d\u52a1\u5668\u79df\u7528\u548c\u670d\u52a1\u5668\u6258\u7ba1\u73af\u5883\u4e2d\u8bca\u65ad\u548c\u89e3\u51b3502\u9519\u8bef\u7684\u65b9\u6cd5\u3002\u65e0\u8bba\u60a8\u662f\u5728\u7ba1\u7406\u5c0f\u578b\u5f00\u53d1\u670d\u52a1\u5668\u8fd8\u662f\u8fd0\u8425\u5927\u89c4\u6a21\u751f\u4ea7\u73af\u5883\uff0c\u4e86\u89e3\u8fd9\u4e9b\u9519\u8bef\u5bf9\u4e8e\u5728\u4e9a\u6d32\u5e02\u573a\u7ef4\u6301\u6700\u4f73\u670d\u52a1\u81f3\u5173\u91cd\u8981\u3002 \u7406\u89e3502 Bad Gateway\u9519\u8bef 502 Bad 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