{"id":21460,"date":"2018-09-04T07:10:41","date_gmt":"2018-09-04T14:10:41","guid":{"rendered":"https:\/\/kinsta.com\/?p=13012"},"modified":"2024-03-01T18:30:09","modified_gmt":"2024-03-01T09:30:09","slug":"502-bad-gateway","status":"publish","type":"post","link":"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/","title":{"rendered":"\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd5"},"content":{"rendered":"<p>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u306f\u3001\u30a4\u30e9\u30a4\u30e9\u3057\u305f\u308a\u6df7\u4e71\u3057\u305f\u308a\u3059\u308b\u69d8\u3005\u306a\u30a8\u30e9\u30fc\u304c\u3064\u304d\u3082\u306e\u3002<a href=\"https:\/\/kinsta.com\/jp\/blog\/wordpress-white-screen-of-death\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u6b7b\u306e\u771f\u3063\u767d\u753b\u9762\uff08WSOD\uff09<\/a>\u3084<a href=\"https:\/\/kinsta.com\/jp\/blog\/error-establishing-a-database-connection\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u306e\u78ba\u7acb\u30a8\u30e9\u30fc<\/a>\u306a\u3069\u306f\u7279\u306b\u5384\u4ecb\u3067\u3059\u3002<\/p>\n<p>\u4e2d\u3067\u3082\u4eca\u56de\u53d6\u308a\u4e0a\u3052\u308b\u300c502 Bad Gateway\u300d\u306f\u3001\u6bd4\u8f03\u7684\u906d\u9047\u3059\u308b\u53ef\u80fd\u6027\u306e\u9ad8\u3044\u30a8\u30e9\u30fc\u3067\u3001WordPress\u30b5\u30a4\u30c8\u306b\u9650\u3089\u305a\u3001Gmail\u3001X\uff08Twitter\uff09\u3001Cloudflare\u306a\u3069\u306e\u4eba\u6c17\u30b5\u30fc\u30d3\u30b9\u3067\u3082\u898b\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u65e9\u901f\u3053\u306e502\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3001\u305d\u3057\u3066\u7d20\u65e9\u304f\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\u3092\u6398\u308a\u4e0b\u3052\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<div><\/div><kinsta-auto-toc heading=\"Table of Contents\" exclude=\"n+6\" list-style=\"arrow\" selector=\"h2\" count-number=\"-1\"><\/kinsta-auto-toc>\n<h2><a id=\"what-is-502-bad-gateway-error\"><\/a>\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u3068\u306f<\/h2>\n<p>\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\u30b5\u30fc\u30d0\u30fc\u304b\u3089<strong>\u7121\u52b9\u306a\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d7\u3051\u53d6\u3063\u305f<\/strong>\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<p>The Internet Engineering Task Force\uff08IETF\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6280\u8853\u7279\u5225\u8abf\u67fb\u59d4\u54e1\u4f1a\uff09\u306f\u3001\u300c<a href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc7231#section-6.6.3\" target=\"_blank\" rel=\"noopener noreferrer\">502 Bad Gateway<\/a>\u300d\u30a8\u30e9\u30fc\u3092\u6b21\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\uff08\u82f1\u8a9e\u539f\u6587\u306e\u65e5\u672c\u8a9e\u8a33\uff09\u3002<\/p>\n<blockquote><p>502\uff08Bad Gateway\uff09\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u307e\u305f\u306f\u30d7\u30ed\u30ad\u30b7\u3068\u3057\u3066\u52d5\u4f5c\u3057\u3066\u3044\u308b\u969b\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3057\u3088\u3046\u3068\u3057\u3066\u30a2\u30af\u30bb\u30b9\u3057\u305f\u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u3001\u7121\u52b9\u306a\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d7\u3051\u53d6\u3063\u305f\u3053\u3068\u3092\u793a\u3059<\/p><\/blockquote>\n<p>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3073\u306b\u3001\u30d6\u30e9\u30a6\u30b6\u306f\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u306f\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u4fe1\u30fb\u51e6\u7406\u3057\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u3092HTTP\u30d8\u30c3\u30c0\u30fc\u3068<a href=\"https:\/\/kinsta.com\/jp\/blog\/http-status-codes\/\" target=\"_blank\" rel=\"noopener noreferrer\">HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9<\/a>\u3068\u3068\u3082\u306b\u9001\u308a\u8fd4\u3057\u307e\u3059\u3002HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306f\u901a\u5e38\u3001\u4f55\u304b\u3057\u3089\u306e\u554f\u984c\u304c\u767a\u751f\u3057\u306a\u3044\u9650\u308a\u306f\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002\u57fa\u672c\u7684\u306b\u306f\u3001\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u3053\u3068\u3092\u8a3a\u65ad\u65b9\u6cd5\u306e\u30b3\u30fc\u30c9\u3068\u3068\u3082\u306b\u901a\u77e5\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002<\/p>\n<table style=\"height: 458px\" width=\"1019\">\n<tbody>\n<tr>\n<td><b>\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9<\/b><\/td>\n<td>502 Bad Gateway<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30a8\u30e9\u30fc\u306e\u7a2e\u985e<\/strong><\/td>\n<td>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30a8\u30e9\u30fc<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u7a2e\u985e<\/strong><\/td>\n<td>502 Bad Gateway<br \/>\nError 502<br \/>\nHTTP Error 502 \u2013 Bad Gateway<br \/>\n502 Service Temporarily Overloaded<br \/>\n502 Proxy Error<br \/>\nA blank white screen<br \/>\n502 Server Error: The server encountered a temporary error and could not complete your request<br \/>\nHTTP 502<br \/>\nTemporary Error (502)<br \/>\n502. That\u2019s an error<br \/>\n502 bad gateway Cloudflare<br \/>\nBad Gateway: The proxy server received an invalid response from an upstream server<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30a8\u30e9\u30fc\u306e\u539f\u56e0<\/strong><\/td>\n<td>\u30b5\u30fc\u30d0\u30fc\u306e\u904e\u8ca0\u8377<br \/>\n\u30d6\u30e9\u30a6\u30b6\u306e\u554f\u984c<br \/>\nDNS\u306e\u554f\u984c<br \/>\n\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u306e\u554f\u984c<br \/>\n\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306b\u3088\u308b\u30d6\u30ed\u30c3\u30af<br \/>\n\u30d7\u30e9\u30b0\u30a4\u30f3\u3068\u30c6\u30fc\u30de\u306e\u554f\u984c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>500\u756a\u53f0\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306b\u306f\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\uff08<a href=\"https:\/\/kinsta.com\/jp\/blog\/500-internal-server-error\/\" target=\"_blank\" rel=\"noopener noreferrer\">500<\/a>\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/501-not-implemented-error\/\" target=\"_blank\" rel=\"noopener noreferrer\">501<\/a>\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/\" target=\"_blank\" rel=\"noopener noreferrer\">502<\/a>\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/http-503-survice-unavailable\/\" target=\"_blank\" rel=\"noopener noreferrer\">503<\/a>\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/504-gateway-timeout\/\" target=\"_blank\" rel=\"noopener noreferrer\">504<\/a>\u3001<a href=\"https:\/\/kinsta.com\/blog\/resource-limit-is-reached\/\" target=\"_blank\" rel=\"noopener noreferrer\">508<\/a>\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/error-520\/\">520<\/a>\u306a\u3069\uff09\u304c\u3042\u308a\u3001\u305d\u308c\u305e\u308c\u304c\u793a\u3059\u5185\u5bb9\u306f\u5fae\u5999\u306b\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u6982\u3057\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u53d7\u3051\u5165\u308c\u3089\u308c\u305f\u3082\u306e\u306e\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u5b9f\u884c\u3092\u59a8\u3052\u305f\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong><a href=\"https:\/\/www.youtube.com\/watch?v=O89MS6j0gJE\">500\u756a\u53f0\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u52d5\u753b\u3067\u306e\u89e3\u8aac\u3082\u3054\u7528\u610f\u3057\u3066\u3044\u307e\u3059<\/a><\/strong>\u3002<\/p>\n<kinsta-video src=\"https:\/\/www.youtube.com\/watch?v=O89MS6j0gJE\"><\/kinsta-video>\n<h2>\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u306e\u4e3b\u306a\u539f\u56e0<\/h2>\n<p>\u3053\u306e\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3068\u3057\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u30b5\u30fc\u30d0\u30fc\u306e\u904e\u8ca0\u8377<\/strong>\u2500\u30b5\u30fc\u30d0\u30fc\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u4e0d\u8db3\u3057\u3001\u30af\u30e9\u30c3\u30b7\u30e5\u3057\u3066502\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3002\u4e88\u671f\u305b\u306c\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u6025\u5897\u3084\u30e1\u30e2\u30ea\u4e0d\u8db3\u304c\u3042\u308b\u3002<\/li>\n<li><strong>\u30d6\u30e9\u30a6\u30b6\u306e\u554f\u984c<\/strong>\u2500\u30d6\u30e9\u30a6\u30b6\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u53e4\u3044\u3001\u307e\u305f\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u7834\u640d\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u3002<\/li>\n<li><strong>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306b\u3088\u308b\u30d6\u30ed\u30c3\u30af<\/strong>\u2500\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u304c\u8aa4\u3063\u3066\u8105\u5a01\u3092\u691c\u77e5\u3057\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3084IP\u30a2\u30c9\u30ec\u30b9\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3066\u3044\u308b\u3002<\/li>\n<\/ol>\n<h2>\u300c502 Bad Gateway\u300d\u306e\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8<\/h2>\n<figure id=\"attachment_48575\" aria-describedby=\"caption-attachment-48575\" style=\"width: 1504px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-48575 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/09\/502-bad-gateway-error-chrome.png\" alt=\"Chrome\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u4f8b\" width=\"1504\" height=\"942\"><figcaption id=\"caption-attachment-48575\" class=\"wp-caption-text\">Chrome\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u4f8b<\/figcaption><\/figure>\n<p>\u300c502 Bad Gateway\u300d\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u3001OS\u306b\u3088\u3063\u3066\u8868\u793a\u3055\u308c\u308b\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u7570\u306a\u308a\u307e\u3059\u304c\u3001\u610f\u5473\u306f\u3059\u3079\u3066\u540c\u3058\u3067\u3059\u3002\u4e00\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>502 Bad Gateway<\/li>\n<li>Error 502<\/li>\n<li>HTTP Error 502 \u2013 Bad Gateway<\/li>\n<li>502 Service Temporarily Overloaded\uff08\u30b5\u30fc\u30d3\u30b9\u306e\u4e00\u6642\u7684\u306a\u904e\u8ca0\u8377\uff09<\/li>\n<li>502 Proxy Error<\/li>\n<li>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u306a\u3044\u305f\u3060\u306e\u771f\u3063\u767d\u306a\u753b\u9762<\/li>\n<li>502 Server Error: The server encountered a temporary error and could not complete your request\uff08\u30b5\u30fc\u30d0\u30fc\u3067\u4e00\u6642\u7684\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u5b8c\u4e86\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\uff09<\/li>\n<li>HTTP 502<\/li>\n<li>Temporary Error (502)<\/li>\n<li>502. That\u2019s an error<\/li>\n<li>502 bad gateway Cloudflare<\/li>\n<li>Bad Gateway: The proxy server received an invalid response from an upstream server\uff08<a href=\"https:\/\/kinsta.com\/jp\/blog\/what-is-a-proxy\/\">\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc<\/a>\u304c\u30a2\u30c3\u30d7\u30b9\u30c8\u30ea\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u7121\u52b9\u306a\u5fdc\u7b54\u3092\u53d7\u3051\u53d6\u308a\u307e\u3057\u305f\uff09<\/li>\n<\/ul>\n<p>\u307e\u305f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u3082\u3002<\/p>\n<figure id=\"attachment_48576\" aria-describedby=\"caption-attachment-48576\" style=\"width: 1505px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-48576 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/09\/502-server-error.png\" alt=\"Chrome\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u4f8b2\" width=\"1505\" height=\"977\"><figcaption id=\"caption-attachment-48576\" class=\"wp-caption-text\">Chrome\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u4f8b2<\/figcaption><\/figure>\n<p>\u307e\u305f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_21662\" aria-describedby=\"caption-attachment-21662\" style=\"width: 1670px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-21662 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/09\/502-web-server-received-an-invalid-response.png\" alt=\"Chrome\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u4f8b3\" width=\"1670\" height=\"965\"><figcaption id=\"caption-attachment-21662\" class=\"wp-caption-text\">Chrome\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u4f8b3<\/figcaption><\/figure>\n<blockquote><p>502\u2500\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u304c\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u307e\u305f\u306f\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3068\u3057\u3066\u52d5\u4f5c\u4e2d\u306b\u7121\u52b9\u306a\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d7\u3051\u53d6\u308a\u307e\u3057\u305f\u3002\u304a\u63a2\u3057\u306e\u30da\u30fc\u30b8\u306b\u306f\u554f\u984c\u304c\u3042\u308a\u3001\u8868\u793a\u3067\u304d\u307e\u305b\u3093\u3002\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u304c\uff08\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u307e\u305f\u306f\u30d7\u30ed\u30ad\u30b7\u3068\u3057\u3066\u52d5\u4f5c\u3057\u3066\u3044\u308b\u3068\u304d\u306b\uff09\u30a2\u30c3\u30d7\u30b9\u30c8\u30ea\u30fc\u30e0\u30b3\u30f3\u30c6\u30f3\u30c4\u30b5\u30fc\u30d0\u30fc\u306b\u554f\u3044\u5408\u308f\u305b\u305f\u969b\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u7121\u52b9\u306a\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d7\u4fe1\u3057\u307e\u3057\u305f\u3002\uff08\u548c\u8a33\uff09<\/p><\/blockquote>\n<p>\u4ed6\u306e\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3001\u307e\u3063\u305f\u304f\u7570\u306a\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070Twitter\uff08\u73feX\uff09\u3067\u306f\u3001\u300cTwitter is over capacity.\u300d\uff08\u5bb9\u91cf\u30aa\u30fc\u30d0\u30fc\u3067\u3059\uff09\u3068\u3044\u3046\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_12997\" aria-describedby=\"caption-attachment-12997\" style=\"width: 1361px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-12997 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/08\/twitter-is-over-capacity.png\" alt=\"Twitter is over capacity\uff08\u753b\u50cf\u51fa\u5178: Softpedia\uff09\" width=\"1361\" height=\"677\"><figcaption id=\"caption-attachment-12997\" class=\"wp-caption-text\">Twitter is over capacity\uff08\u753b\u50cf\u51fa\u5178: <a href=\"https:\/\/webscripts.softpedia.com\/blog\/quot-Twitter-Is-Over-Capacity-quot-but-Its-Engineers-Are-on-It-325691.shtml\" target=\"_blank\" rel=\"noopener noreferrer\">Softpedia<\/a>\uff09<\/figcaption><\/figure>\n<p>Google Chrome\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u3082\u3002<\/p>\n<figure id=\"attachment_28877\" aria-describedby=\"caption-attachment-28877\" style=\"width: 1356px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-28877 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/09\/google-502-error.png\" alt=\"Chrome\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u4f8b4\" width=\"1356\" height=\"596\"><figcaption id=\"caption-attachment-28877\" class=\"wp-caption-text\">Chrome\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u4f8b4<\/figcaption><\/figure>\n<blockquote><p>502\u3002\u30a8\u30e9\u30fc\u3067\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u3067\u4e00\u6642\u7684\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u5b8c\u4e86\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u300230\u79d2\u5f8c\u306b\u518d\u8a66\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002\uff08\u548c\u8a33\uff09<\/p><\/blockquote>\n<h2>\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u304c\u4e0e\u3048\u308bSEO\u3078\u306e\u5f71\u97ff<\/h2>\n<p><a href=\"https:\/\/kinsta.com\/blog\/wordpress-maintenance\/\">WordPress\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u30e2\u30fc\u30c9<\/a>\u4f7f\u7528\u4e2d\u306b\u3001Google\u306b\u5f8c\u3067\u30af\u30ed\u30fc\u30eb\u3059\u308b\u3088\u3046\u306b\u6307\u793a\u3059\u308b<a href=\"https:\/\/kinsta.com\/jp\/blog\/http-503-survice-unavailable\/\" target=\"_blank\" rel=\"noopener noreferrer\">503\u30a8\u30e9\u30fc<\/a>\u3068\u306f\u7570\u306a\u308a\u3001502\u30a8\u30e9\u30fc\u306e\u5834\u5408\u306f\u3059\u3050\u306b\u4fee\u6b63\u3057\u306a\u3051\u308c\u3070\u3001SEO\u306b\u60aa\u5f71\u97ff\u3092\u53ca\u307c\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30b5\u30a4\u30c8\u304c10\u5206\u7a0b\u5ea6\u3057\u304b\u30c0\u30a6\u30f3\u3057\u3066\u304a\u3089\u305a\u3001\u7d99\u7d9a\u7684\u306b\u30af\u30ed\u30fc\u30eb\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u30af\u30ed\u30fc\u30e9\u30fc\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u914d\u4fe1\u3055\u308c\u305f\u30da\u30fc\u30b8\u3092\u53d6\u5f97\u3059\u308b\u306e\u304c\u901a\u4f8b\u3067\u3059\u3002\u3042\u308b\u3044\u306f\u3001\u77ed\u6642\u9593\u3067\u3042\u308c\u3070\u30c0\u30a6\u30f3\u3057\u3066\u3044\u308b\u9593\u306b\u518d\u30af\u30ed\u30fc\u30eb\u304c\u884c\u308f\u308c\u306a\u3044\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001\u7279\u306b\u554f\u984c\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3068\u3053\u308d\u304c\u3001\u30b5\u30a4\u30c8\u304c\u9577\u671f\u9593\u3001\u4f8b\u3048\u30706\u6642\u9593\u4ee5\u4e0a\u30c0\u30a6\u30f3\u3057\u3066\u3044\u308b\u5834\u5408\u3001Google\u306f502\u30a8\u30e9\u30fc\u3092\u30b5\u30a4\u30c8\u30ec\u30d9\u30eb\u306e\u554f\u984c\u3068\u3057\u3066\u8a8d\u8b58\u3057\u3001\u5bfe\u51e6\u3059\u308b\u5fc5\u8981\u3042\u308a\u3068\u5224\u65ad\u3059\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<strong>\u3053\u306e\u5834\u5408\u306fSEO\u306b\u5f71\u97ff\u304c\u51fa\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/strong>\u3002502\u30a8\u30e9\u30fc\u306e\u518d\u767a\u3092\u9632\u3050\u306b\u306f\u3001\u305d\u306e\u539f\u56e0\u3092\u7a81\u304d\u6b62\u3081\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306e\u89e3\u6c7a\u7b56\u3092\u4eca\u3059\u3050\u5b9f\u884c\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2><a id=\"fix-502-bad-gateway-error\"><\/a>\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\uff0813\u306e\u65b9\u6cd5\uff09<\/h2>\n<p>\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u306f\u901a\u5e38\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\/\u30b5\u30fc\u30d0\u30fc\u306b\u95a2\u3059\u308b\u554f\u984c\u3067\u3059\u304c\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306b\u539f\u56e0\u304c\u3042\u308b\u3053\u3068\u3082\u3042\u308a\u5f97\u307e\u3059\u3002\u305d\u3053\u3067\u4e21\u65b9\u306e\u53ef\u80fd\u6027\u3092\u8003\u616e\u3057\u3001502\u30a8\u30e9\u30fc\u3092\u89e3\u6c7a\u3059\u308b\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<div><\/div><kinsta-auto-toc list-style=\"decimal\" selector=\"h3\" count-number=\"13\" sub-toc=\"true\"><\/kinsta-auto-toc>\n<h3>1. \u30da\u30fc\u30b8\u3092\u518d\u8aad\u307f\u8fbc\u307f\u3059\u308b<\/h3>\n<p>\u307e\u305a\u6700\u521d\u306b\u8a66\u3057\u305f\u3044\u306e\u306f\u30011\u5206\u307b\u3069\u5f85\u3063\u3066\u304b\u3089<strong>\u30da\u30fc\u30b8\u3092\u518d\u8aad\u307f\u8fbc\u307f<\/strong>\uff08F5\u307e\u305f\u306fCtrl + F5\uff09\u3059\u308b\u3053\u3068\u3002\u30db\u30b9\u30c8\u3084\u30b5\u30fc\u30d0\u30fc\u306b\u4e00\u6642\u7684\u306b\u8ca0\u8377\u304c\u304b\u304b\u3063\u3066\u3044\u308b\u3060\u3051\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<h3>2.\u30b5\u30a4\u30c8\u306e\u7a3c\u50cd\u72b6\u6cc1\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n<p>\u3082\u3046\u4e00\u3064\u3059\u3050\u306b\u3067\u304d\u308b\u3053\u3068\u306f\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306eURL\u3092\u300c<a href=\"https:\/\/downforeveryoneorjustme.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">downforeveryoneorjustme.com<\/a>\u300d\u306b\u8cbc\u308a\u4ed8\u3051\u308b\u3053\u3068\u3067\u3059\u3002\u30b5\u30a4\u30c8\u304c\u30c0\u30a6\u30f3\u3057\u3066\u3044\u308b\u306e\u304b\u3001\u305d\u308c\u3068\u3082\u81ea\u5206\u306e\u74b0\u5883\u306b\u554f\u984c\u304c\u3042\u308b\u3060\u3051\u306a\u306e\u304b\u3092\u78ba\u304b\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<a href=\"https:\/\/kinsta.com\/jp\/blog\/how-to-check-if-a-website-is-down\/\">\u305d\u306e\u4ed6\u306e\u4fbf\u5229\u30c4\u30fc\u30eb\u306f\u3053\u3061\u3089<\/a>\u3067\u3054\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_13001\" aria-describedby=\"caption-attachment-13001\" style=\"width: 1467px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13001 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/08\/downforeveryoneorjustme.png\" alt=\"downforeveryoneorjustme.com\" width=\"1467\" height=\"163\"><figcaption id=\"caption-attachment-13001\" class=\"wp-caption-text\">downforeveryoneorjustme.com<\/figcaption><\/figure>\n<h3>3. \u5225\u306e\u30d6\u30e9\u30a6\u30b6\u3092\u4f7f\u7528\u3057\u3066\u307f\u308b<\/h3>\n<p>\u307e\u305f\u3001\u5225\u306e\u30d6\u30e9\u30a6\u30b6\u3092\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u4f8b\u3048\u3070\u3001Google Chrome\u3092\u4f7f\u3063\u3066\u3044\u3066\u3053\u306e\u30a8\u30e9\u30fc\u306b\u906d\u9047\u3057\u305f\u5834\u5408\u306f\u3001<a href=\"https:\/\/kinsta.com\/blog\/microsoft-edge-vs-chrome\/\">Microsoft Edge<\/a>\u3092\u4f7f\u3063\u3066\u307f\u308b\u306a\u3069\u3002<\/p>\n<p>\u5225\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u30a8\u30e9\u30fc\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u5834\u5408\u3001\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u6700\u521d\u306e\u30d6\u30e9\u30a6\u30b6\u3092\u4e00\u5ea6\u524a\u9664\u3057\u3001\u518d\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<h3>4. \u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u30e2\u30fc\u30c9\u3067\u958b\u3044\u3066\u307f\u308b<\/h3>\n<p><a href=\"https:\/\/kinsta.com\/jp\/blog\/incognito-mode\/\">\u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u30e2\u30fc\u30c9<\/a>\u3092\u4f7f\u7528\u3059\u308b\u3068\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3067\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u62e1\u5f35\u6a5f\u80fd\u304c\u539f\u56e0\u306b\u306a\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u539f\u56e0\u3068\u306a\u3063\u3066\u3044\u308b\u62e1\u5f35\u6a5f\u80fd\u3092\u7279\u5b9a\u3059\u308b\u306b\u306f\u3001\u30b5\u30a4\u30c8\u304c\u6b63\u5e38\u306b\u958b\u304f\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u306a\u304c\u3089\u3001\u4e00\u3064\u305a\u3064\u62e1\u5f35\u6a5f\u80fd\u3092\u7121\u52b9\u5316\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u30a2\u30af\u30bb\u30b9\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3066\u3044\u305f\u62e1\u5f35\u6a5f\u80fd\u3092\u898b\u3064\u3051\u305f\u3089\u3001\u524a\u9664\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>5. \u5225\u306e\u30c7\u30d0\u30a4\u30b9\u3092\u4f7f\u7528\u3057\u3066\u307f\u308b<\/h3>\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306b\u554f\u984c\u304c\u3042\u308b\u3053\u3068\u3092\u60f3\u5b9a\u3057\u3001\u5225\u306e\u30c7\u30d0\u30a4\u30b9\u3067\u3082\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u30e2\u30d0\u30a4\u30eb\u30c7\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u3001\u95b2\u89a7\u3057\u305f\u3044\u30da\u30fc\u30b8\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u307e\u3059\u3002\u554f\u984c\u306a\u304f\u958b\u304f\u3053\u3068\u304c\u3067\u304d\u308c\u3070\u3001\u7121\u7ddaLAN\u30eb\u30fc\u30bf\u30fc\u306e\u96fb\u6e90\u30b1\u30fc\u30d6\u30eb\u3092\u629c\u304d\u3001\u3057\u3070\u3089\u304f\u5f85\u3063\u3066\u304b\u3089\u518d\u63a5\u7d9a\u3057\u3066\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3084\u305d\u306e\u4ed6\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u3092\u518d\u8d77\u52d5\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u3053\u308c\u306b\u3088\u3063\u3066\u3001\u30a8\u30e9\u30fc\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6a5f\u5668\u306b\u8d77\u56e0\u3057\u3066\u3044\u308b\u306e\u304b\u3001\u305d\u308c\u3068\u3082\u4ed6\u306e\u4f55\u304b\u304c\u539f\u56e0\u306a\u306e\u304b\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>6. \u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b<\/h3>\n<p>\u3053\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u306b\u906d\u9047\u3057\u305f\u5834\u5408\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b\u3053\u3068\u306f\u5e38\u306b\u826f\u3044\u30a2\u30a4\u30c7\u30a2\u3067\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u5225\u306e\u30af\u30ea\u30a2\u65b9\u6cd5\u306f\u3001\u4ee5\u4e0b\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/how-to-clear-browser-cache\/#single\" target=\"_blank\" rel=\"noopener noreferrer\">\u3059\u3079\u3066\u306e\u30d6\u30e9\u30a6\u30b6\u30671\u3064\u306e\u30da\u30fc\u30b8\u3092\u5f37\u5236\u66f4\u65b0\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/how-to-clear-browser-cache\/#chrome\" target=\"_blank\" rel=\"noopener noreferrer\">Google Chrome\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/how-to-clear-browser-cache\/#firefox\" target=\"_blank\" rel=\"noopener noreferrer\">Mozilla Firefox\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/how-to-clear-browser-cache\/#safari\" target=\"_blank\" rel=\"noopener noreferrer\">Safari\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/how-to-clear-browser-cache\/#edge\" target=\"_blank\" rel=\"noopener noreferrer\">Microsoft Edge\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/how-to-clear-browser-cache\/#opera\" target=\"_blank\" rel=\"noopener noreferrer\">Opera\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b<\/a><\/li>\n<\/ul>\n<h3 id=\"3-dns-issue\">7. DNS\u306e\u554f\u984c\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/h3>\n<p>502\u30a8\u30e9\u30fc\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u304c\u6b63\u3057\u3044IP\u30a2\u30c9\u30ec\u30b9\u306b\u89e3\u6c7a\u3055\u308c\u3066\u3044\u306a\u3044\u3001\u3042\u308b\u3044\u306f<a href=\"https:\/\/kinsta.com\/blog\/dns-server-not-responding\/\">DNS\u30b5\u30fc\u30d0\u30fc\u304c\u5fdc\u7b54\u3057\u3066\u3044\u306a\u3044<\/a>\u306a\u3069\u3001DNS\u306e\u554f\u984c\u304c\u539f\u56e0\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u30b5\u30a4\u30c8\u3092\u5225\u306e\u30b5\u30fc\u30d0\u30fc\u4f1a\u793e\u306b\u79fb\u884c\u3057\u305f\u3070\u304b\u308a\u3067\u3042\u308c\u3070\u3001\u5b8c\u5168\u306b\u4f1d\u64ad\u3055\u308c\u308b\u307e\u3067\u5f85\u3061\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u306fDNS\u30ec\u30b3\u30fc\u30c9\u306e<a href=\"https:\/\/kinsta.com\/jp\/blog\/what-is-ttl\/\">TTL<\/a>\u5024\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/flush-dns\/\">\u30ed\u30fc\u30ab\u30eb\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u3082\u30af\u30ea\u30a2<\/a>\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b\u306e\u3068\u4f3c\u305f\u8981\u9818\u3067\u3059\u3002<\/p>\n<p>Windows\u3067\u306f\u3001\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3092\u958b\u3044\u3066\u3001\u4ee5\u4e0b\u3092\u8cbc\u308a\u4ed8\u3051\u308b\u3060\u3051\u3067OK\u3067\u3059\u3002<\/p>\n<pre>ipconfig \/flushdns<\/pre>\n<figure id=\"attachment_13009\" aria-describedby=\"caption-attachment-13009\" style=\"width: 1285px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13009 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/08\/command-prompt-flush-dns-e1504247136564.png\" alt=\"\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u2500DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\" width=\"1285\" height=\"500\"><figcaption id=\"caption-attachment-13009\" class=\"wp-caption-text\">\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u2500DNS\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2<\/figcaption><\/figure>\n<p>\u30af\u30ea\u30a2\u3055\u308c\u308b\u3068\u300cSuccessfully flush the DNS resolver Cache\u300d\uff08DNS\u30ea\u30be\u30eb\u30d0\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30d5\u30e9\u30c3\u30b7\u30e5\u306b\u6210\u529f\u3057\u307e\u3057\u305f\uff09\u3068\u3044\u3046\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>macOS\u3067\u306f\u3001\u30bf\u30fc\u30df\u30ca\u30eb\u306b\u4ee5\u4e0b\u3092\u8cbc\u308a\u4ed8\u3051\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre>dscacheutil -flushcache<\/pre>\n<p>\u306a\u304a\u3001Mac\u3067\u306f\u7279\u306b\u6210\u529f\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>\u6700\u5f8c\u306b\u3001DNS\u30b5\u30fc\u30d0\u30fc\u3092\u4e00\u6642\u7684\u306b\u5909\u66f4\u3059\u308b\u306e\u3082\u89e3\u6c7a\u7b56\u306b\u306a\u308a\u5f97\u307e\u3059\u3002DNS\u30b5\u30fc\u30d0\u30fc\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067ISP\u306b\u3088\u3063\u3066\u81ea\u52d5\u7684\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u304c\u3001Google\u306e\u3088\u3046\u306a<a href=\"https:\/\/developers.google.com\/speed\/public-dns\/docs\/using\" target=\"_blank\" rel=\"noopener noreferrer\">\u30d1\u30d6\u30ea\u30c3\u30afDNS<\/a>\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\uff08Google Public DNS\u3092\u9577\u671f\u7684\u306b\u4f7f\u7528\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u3082\uff09\u3002<a href=\"https:\/\/kinsta.com\/jp\/blog\/premium-dns\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30d7\u30ec\u30df\u30a2\u30e0DNS<\/a>\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u4f1d\u64ad\u306f\u304b\u306a\u308a\u9ad8\u901f\u306a\u306e\u304c\u901a\u4f8b\u3067\u3059\u3002<\/p>\n<h3>8. \u30b5\u30fc\u30d0\u30fc\u4f1a\u793e\u306b\u78ba\u8a8d\u3059\u308b<\/h3>\n<p>\u300c502 Bad Gataway\u300d\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u4e3b\u306a\u539f\u56e0\u306f\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u306b\u3042\u308a\u307e\u3059\u3002<strong>\u30af\u30a8\u30ea\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u6642\u9593\u304c\u304b\u304b\u308a\u3059\u304e\u308b<\/strong>\u3068\u3001\u30b5\u30fc\u30d0\u30fc\u306b\u3088\u3063\u3066\u30ad\u30e3\u30f3\u30bb\u30eb\u307e\u305f\u306f\u5f37\u5236\u7d42\u4e86\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u591a\u304f\u306e\u30b5\u30fc\u30d0\u30fc\u3001\u7279\u306b\u5171\u7528\u30b5\u30fc\u30d0\u30fc\u3067\u306f\u3001kill\u3068\u547c\u3070\u308c\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30b5\u30a4\u30c8\u3092\u30c0\u30a6\u30f3\u3055\u305b\u305f\u308a\u4ed6\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u5f71\u97ff\u304c\u53ca\u3070\u306a\u3044\u3088\u3046\u3001\u4e00\u5b9a\u6642\u9593\u5f8c\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u7d42\u4e86\u3055\u305b\u308b\u3082\u306e\u3067\u3059\u3002X\u3067\u300c<a href=\"https:\/\/twitter.com\/search?q=bad%20gateway&#038;src=typd\" target=\"_blank\" rel=\"noopener noreferrer\">bad gateway<\/a>\u300d\u3092\u691c\u7d22\u3059\u308b\u3068\u3001\u30b5\u30fc\u30d0\u30fc\u4f1a\u793e\u306b\u554f\u984c\u3092\u8b66\u544a\u3059\u308b\u4f55\u5343\u3082\u306e\u6295\u7a3f\u3092\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_12998\" aria-describedby=\"caption-attachment-12998\" style=\"width: 632px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-12998\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/08\/502-bad-gateway-tweets.png\" alt=\"\u300c502 Bad Gataway\u300d\u306b\u95a2\u3059\u308b502\u4ef6\u306e\u6295\u7a3f\" width=\"632\" height=\"580\"><figcaption id=\"caption-attachment-12998\" class=\"wp-caption-text\">\u300c502 Bad Gataway\u300d\u306b\u95a2\u3059\u308b502\u4ef6\u306e\u6295\u7a3f<\/figcaption><\/figure>\n<p>Kinsta\u306e\u3088\u3046\u306a\u30b5\u30fc\u30d0\u30fc\u30b5\u30fc\u30d3\u30b9\u3078\u306e\u79fb\u884c\u3092\u691c\u8a0e\u3057\u305f\u3044\u7406\u7531\u306e1\u3064\u306f\u3001\u30b5\u30a4\u30c8\u306e\u5b9f\u884c\u306b\u5fc5\u8981\u306a\u3059\u3079\u3066\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30ea\u30bd\u30fc\u30b9\uff08Linux\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/what-is-nginx\/\" target=\"_blank\" rel=\"noopener noreferrer\">Nginx<\/a>\u3001PHP\u3001MySQL\uff09\u3092\u542b\u3080<strong>\u9694\u96e2\u3055\u308c\u305f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u30b3\u30f3\u30c6\u30ca<\/strong>\u3067\u5b9f\u884c\u3055\u308c\u308b\u70b9\u306b\u3042\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001<strong>\u5404\u30b5\u30a4\u30c8\u306b\u5c02\u7528\u30ea\u30bd\u30fc\u30b9\u304c\u78ba\u4fdd<\/strong>\u3055\u308c\u3001\u4ed6\u306e\u30e6\u30fc\u30b6\u30fc\u3069\u3053\u308d\u304b\u3001\u81ea\u5206\u306e\u4ed6\u306e\u30b5\u30a4\u30c8\u9593\u3067\u3055\u3048\u3082<strong>\u5171\u6709\u3055\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093<\/strong>\u3002\u3053\u308c\u306b\u3088\u3063\u3066\u3001\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u78ba\u7387\u304c\u5287\u7684\u306b\u4e0b\u304c\u308a\u307e\u3059\u3002\u4e00\u90e8\u306e\u5171\u6709\u30b5\u30fc\u30d0\u30fc\u306e\u3088\u3046\u306bkill\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u305b\u3093\u3002\u4e07\u304c\u4e00\u3042\u308b\u30b5\u30a4\u30c8\u304c\u30c0\u30a6\u30f3\u3057\u3066\u3082\u3001\u4ed6\u306e\u30b5\u30a4\u30c8\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>502\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u5225\u306e\u539f\u56e0\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u30c0\u30a6\u30f3\u3057\u3066\u3044\u308b\u3001\u307e\u305f\u306f\u63a5\u7d9a\u304c\u78ba\u7acb\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u306e\u3069\u3061\u3089\u304b\u3067\u3042\u308a\u3001\u5358\u306b\u5230\u9054\u3067\u304d\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u4f1a\u793e\u306e<a href=\"https:\/\/status.kinsta.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30b9\u30c6\u30fc\u30bf\u30b9\u30da\u30fc\u30b8<\/a>\u3092\u78ba\u8a8d\u3059\u308b\u304b\u3001\u30ab\u30b9\u30bf\u30de\u30fc\u30b5\u30dd\u30fc\u30c8\u306b\u554f\u3044\u5408\u308f\u305b\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>9.CDN\u307e\u305f\u306f\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u4e00\u6642\u7684\u306b\u7121\u52b9\u306b\u3059\u308b<\/h3>\n<p>\u3042\u308b\u3044\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/wordpress-cdn\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30b3\u30f3\u30c6\u30f3\u30c4\u30c7\u30ea\u30d0\u30ea\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/a>\uff08CDN\uff09\u307e\u305f\u306f<a href=\"https:\/\/kinsta.com\/jp\/blog\/what-is-a-firewall\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a>\u304c\u539f\u56e0\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306eCDN\u30b5\u30fc\u30d3\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001CDN\u3092\u4e00\u6642\u7684\u306b\u7121\u52b9\u306b\u3059\u308b\u306e\u304c\u624b\u3063\u53d6\u308a\u65e9\u3044\u65b9\u6cd5\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001<a href=\"https:\/\/wordpress.org\/plugins\/cdn-enabler\/\" target=\"_blank\" rel=\"noopener noreferrer\">CDN Enabler<\/a>\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u5358\u306b\u4e00\u5ea6\u7121\u52b9\u306b\u3057\u3066\u30b5\u30a4\u30c8\u3092\u30c6\u30b9\u30c8\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><a href=\"https:\/\/kinsta.com\/blog\/locked-out-of-wordpress-admin\/\">WP\u7ba1\u7406\u753b\u9762\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044<\/a>\u5834\u5408\u306f\u3001SFTP\u7d4c\u7531\u3067\u30b5\u30a4\u30c8\u306b\u30ed\u30b0\u30a4\u30f3\u3057\u3001\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u30d5\u30a9\u30eb\u30c0\u540d\u3092\u300ccdn-enabler_old\u300d\u306b\u5909\u66f4\u3059\u308b\u3068\u3001CDN\u63a5\u7d9a\u304c\u4e00\u6642\u7684\u306b\u7121\u52b9\u306b\u306a\u308a\u307e\u3059\u3002WP Rocket\u3084CDN\u306b\u63a5\u7d9a\u3057\u3066\u3044\u308b\u4ed6\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3082\u540c\u69d8\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_13020\" aria-describedby=\"caption-attachment-13020\" style=\"width: 1384px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13020 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/08\/rename-plugin-temporarily.png\" alt=\"\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u30d5\u30a9\u30eb\u30c0\u540d\u3092\u4e00\u6642\u7684\u306b\u5909\u66f4\" width=\"1384\" height=\"307\"><figcaption id=\"caption-attachment-13020\" class=\"wp-caption-text\">\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u30d5\u30a9\u30eb\u30c0\u540d\u3092\u4e00\u6642\u7684\u306b\u5909\u66f4<\/figcaption><\/figure>\n<p>\u3053\u308c\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/what-is-a-ddos-attack\/\" target=\"_blank\" rel=\"noopener noreferrer\">DDoS\u5bfe\u7b56<\/a>\u3092\u5b9f\u88c5\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d3\u30b9\u3084\u3001<a href=\"https:\/\/kinsta.com\/jp\/cloudflare-integration\/\" target=\"_blank\" rel=\"noopener noreferrer\">Cloudflare\u306e\u3088\u3046\u306a\u5b8c\u5168\u306a\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d3\u30b9<\/a>\u3067\u3082\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306bCloudflare\u306e\u7121\u6599\u30d7\u30e9\u30f3\u3067\u3053\u306e\u30a8\u30e9\u30fc\u304c\u6642\u6298\u767a\u751f\u3059\u308b\u4e8b\u4f8b\u304c\u3042\u308a\u3001Cloudflare\u306f\u5b8c\u5168\u306a\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d3\u30b9\u3067\u3042\u308b\u305f\u3081\u3001\u7c21\u5358\u306b\u306f\u7121\u52b9\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001Cloudflare\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u306b\u306f\u3001\u4ee5\u4e0b2\u3064\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h4>Cloudflare\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc1<\/h4>\n<p>\u4ee5\u4e0b\u306e\u753b\u9762\u304c\u8868\u793a\u3055\u308c\u305f\u5834\u5408\u3001\u539f\u56e0\u306fCloudflare\u5074\u306b\u3042\u308a\u307e\u3059\u3002<a href=\"https:\/\/www.cloudflarestatus.com\/\">Cloudflare\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30da\u30fc\u30b8<\/a>\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001\u73fe\u5728\u969c\u5bb3\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<figure id=\"attachment_48737\" aria-describedby=\"caption-attachment-48737\" style=\"width: 1505px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-48737 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/09\/502-bad-gateway-cloudflare-error.png\" alt=\"Cloudflare\u306b\u539f\u56e0\u304c\u3042\u308b\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\" width=\"1505\" height=\"977\"><figcaption id=\"caption-attachment-48737\" class=\"wp-caption-text\">Cloudflare\u306b\u539f\u56e0\u304c\u3042\u308b\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc<\/figcaption><\/figure>\n<h4>Cloudflare\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc2<\/h4>\n<p>\u4ee5\u4e0b\u306e\u753b\u9762\u304c\u8868\u793a\u3055\u308c\u305f\u5834\u5408\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u306b\u539f\u56e0\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_13412\" aria-describedby=\"caption-attachment-13412\" style=\"width: 1693px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13412 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/09\/cloudflare-502-bad-gateway-host-1.png\" alt=\"\u30b5\u30fc\u30d0\u30fc\u306b\u539f\u56e0\u304c\u3042\u308b\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\" width=\"1693\" height=\"1370\"><figcaption id=\"caption-attachment-13412\" class=\"wp-caption-text\">\u30b5\u30fc\u30d0\u30fc\u306b\u539f\u56e0\u304c\u3042\u308b\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc<\/figcaption><\/figure>\n<h4>GoDaddy\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/h4>\n<p><a href=\"https:\/\/kinsta.com\/jp\/godaddy-alternative\/\" target=\"_blank\" rel=\"noopener noreferrer\">GoDaddy<\/a>\u306e\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3082\u3053\u308c\u306b\u8a72\u5f53\u3057\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u81ea\u4f53\u3067\u306f\u306a\u304f\u3001\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306b\u3088\u308b\u30aa\u30ea\u30b8\u30f3\u30b5\u30fc\u30d0\u30fc\uff08\u30b5\u30fc\u30d0\u30fc\u4f1a\u793e\uff09\u306b\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_47771\" aria-describedby=\"caption-attachment-47771\" style=\"width: 906px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-47771 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/09\/godaddy-firewall-e1560784840822-1.png\" alt=\"GoDaddy\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\" width=\"906\" height=\"425\"><figcaption id=\"caption-attachment-47771\" class=\"wp-caption-text\">GoDaddy\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc<\/figcaption><\/figure>\n<h3>10. \u30d7\u30e9\u30b0\u30a4\u30f3\u3068\u30c6\u30fc\u30de\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n<p>\u901a\u5e38\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u3084\u30af\u30a8\u30ea\u304c\u30b5\u30fc\u30d0\u30fc\u306b\u3088\u3063\u3066\u30ad\u30e3\u30f3\u30bb\u30eb\u3055\u308c\u308b\u539f\u56e0\u306f\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3001\u304a\u305d\u3089\u304f\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30c6\u30fc\u30de\u306e<strong>\u8cea\u306e\u826f\u304f\u306a\u3044\u30b3\u30fc\u30c9<\/strong>\u306b\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u8a2d\u5b9a\u30df\u30b9\u306b\u3088\u3063\u3066502\u30a8\u30e9\u30fc\u304c\u5f15\u304d\u8d77\u3053\u3055\u308c\u308b\u3053\u3068\u3082\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001\u3059\u3079\u3066\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u7121\u52b9\u306b\u3057\u307e\u3059\u3002\u7121\u52b9\u5316\u3068\u8a00\u3063\u3066\u3082\u3001\u4e00\u6642\u7684\u306b\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u505c\u6b62\u3059\u308b\u3060\u3051\u306a\u306e\u3067\u3001\u30c7\u30fc\u30bf\u304c\u5931\u308f\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><a href=\"https:\/\/kinsta.com\/jp\/blog\/wordpress-admin\/\" target=\"_blank\" rel=\"noopener noreferrer\">WP\u7ba1\u7406\u753b\u9762<\/a>\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u5834\u5408\u306f\u3001\u300c\u30d7\u30e9\u30b0\u30a4\u30f3\u300d\u30da\u30fc\u30b8\u306b\u79fb\u52d5\u3057\u3001\u300c\u4e00\u62ec\u64cd\u4f5c\u300d\u306e\u30c9\u30ed\u30c3\u30d7\u30c0\u30a6\u30f3\u304b\u3089\u300c\u505c\u6b62\u300d\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u3067<a href=\"https:\/\/kinsta.com\/jp\/blog\/disable-wordpress-plugins\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u3059\u3079\u3066\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u7121\u52b9\u5316<\/a>\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u3067\u30a8\u30e9\u30fc\u304c\u6d88\u3048\u308b\u5834\u5408\u306f\u3001\u539f\u56e0\u3068\u306a\u3063\u3066\u3044\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u7a81\u304d\u6b62\u3081\u307e\u3057\u3087\u3046\u3002\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u3072\u3068\u3064\u305a\u3064\u6709\u52b9\u306b\u3057\u306a\u304c\u3089\u3001\u305d\u306e\u90fd\u5ea6\u30b5\u30a4\u30c8\u3092\u518d\u8aad\u307f\u8fbc\u307f\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u6709\u52b9\u5316\u3059\u308b\u3068\u30a8\u30e9\u30fc\u304c\u8868\u793a\u3055\u308c\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u539f\u56e0\u3067\u3059\u3002\u7279\u5b9a\u3057\u305f\u3089\u3001\u305d\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u4f7f\u7528\u3092\u3084\u3081\u308b\u304b\u3001\u30d7\u30e9\u30b0\u30a4\u30f3\u958b\u767a\u8005\u306b\u554f\u3044\u5408\u308f\u305b\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_13007\" aria-describedby=\"caption-attachment-13007\" style=\"width: 1672px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13007 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/08\/deactivate-all-plugins.png\" alt=\"\u3059\u3079\u3066\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u7121\u52b9\u306b\u3059\u308b\" width=\"1672\" height=\"818\"><figcaption id=\"caption-attachment-13007\" class=\"wp-caption-text\">\u3059\u3079\u3066\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u7121\u52b9\u306b\u3059\u308b<\/figcaption><\/figure>\n<p>\u7ba1\u7406\u753b\u9762\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001FTP\u3067\u30b5\u30fc\u30d0\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001plugins\u30d5\u30a9\u30eb\u30c0\u306e\u540d\u524d\u3092\u300cplugins_old\u300d\u306a\u3069\u306b\u5909\u66f4\u3057\u3001\u30b5\u30a4\u30c8\u306b\u518d\u5ea6\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002\u3053\u308c\u3067\u30a8\u30e9\u30fc\u304c\u89e3\u6d88\u3055\u308c\u305f\u3089\u3001\u5148\u307b\u3069\u540c\u69d8\u3001\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3068\u306a\u3063\u3066\u3044\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u63a2\u3057\u307e\u3059\u3002plugins\u30d5\u30a9\u30eb\u30c0\u306e\u540d\u524d\u3092 \u300cplugins\u300d\u306b\u623b\u3057\u3066\u3001\u30b5\u30a4\u30c8\u3092\u518d\u8aad\u307f\u8fbc\u307f\u3057\u306a\u304c\u3089\u30011\u3064\u305a\u3064\u6709\u52b9\u306b\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<figure id=\"attachment_13008\" aria-describedby=\"caption-attachment-13008\" style=\"width: 1229px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13008 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/08\/rename-plugin-folder.png\" alt=\"plugins\u30d5\u30a9\u30eb\u30c0\u306e\u540d\u524d\u3092\u5909\u66f4\" width=\"1229\" height=\"470\"><figcaption id=\"caption-attachment-13008\" class=\"wp-caption-text\">plugins\u30d5\u30a9\u30eb\u30c0\u306e\u540d\u524d\u3092\u5909\u66f4<\/figcaption><\/figure>\n<p>\u307e\u305f\u3001\u30d7\u30e9\u30b0\u30a4\u30f3\u3001\u30c6\u30fc\u30de\u3001WordPress\u30b3\u30a2\u306f\u5e38\u306b<strong>\u6700\u65b0\u306e\u72b6\u614b<\/strong>\u306b\u7dad\u6301\u3057\u3001PHP\u306f\u5fc5\u305a\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306b\u3064\u3044\u3066\u306f\u3001\u3054\u5229\u7528\u306e\u30b5\u30fc\u30d0\u30fc\u4f1a\u793e\u304c\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304f\u308c\u308b\u306f\u305a\u3067\u3059\u3002Kinsta\u3067\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/apm-tool\/\">\u72ec\u81ea\u306eAPM\u30c4\u30fc\u30eb<\/a>\u3084\u305d\u306e\u4ed6\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u65b9\u6cd5\u3092\u5229\u7528\u3057\u3066\u3001\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3068\u306a\u3063\u3066\u3044\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u3001\u30af\u30a8\u30ea\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u3092<a href=\"https:\/\/kinsta.com\/jp\/blog\/debugging-wordpress-performance\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u7279\u5b9a\u3059\u308b\u304a\u624b\u4f1d\u3044<\/a>\u3092\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u30e9\u30a4\u30bb\u30f3\u30b9\u3092\u304a\u6301\u3061\u3067\u3042\u308c\u3070\u3001\u72ec\u81ea\u306e\u30ab\u30b9\u30bf\u30e0New Relic\u30ad\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_13005\" aria-describedby=\"caption-attachment-13005\" style=\"width: 1905px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13005 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/08\/time-consuming-database-calls.png\" alt=\"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u6642\u9593\u306e\u304b\u304b\u308b\u30af\u30a8\u30ea\" width=\"1905\" height=\"1307\"><figcaption id=\"caption-attachment-13005\" class=\"wp-caption-text\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u6642\u9593\u306e\u304b\u304b\u308b\u30af\u30a8\u30ea<\/figcaption><\/figure>\n<p>\u52b9\u7387\u7684\u306a\u30af\u30a8\u30ea\u3084\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u4e0d\u9069\u5207\u306a\u30b3\u30fc\u30c9\u304c\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u5224\u660e\u3057\u305f\u5834\u5408\u306f\u3001\u89e3\u6c7a\u306b\u3042\u305f\u3063\u3066\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/hire-wordpress-developer\/\" target=\"_blank\" rel=\"noopener noreferrer\">WordPress\u958b\u767a\u8005<\/a>\u306e\u5354\u529b\u304c\u5fc5\u8981\u306b\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<h3>11. \u30ed\u30b0\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n<p><a href=\"https:\/\/kinsta.com\/jp\/blog\/wordpress-error-log\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30a8\u30e9\u30fc\u30ed\u30b0<\/a>\u3082\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002Kinsta\u3092\u3054\u5229\u7528\u306e\u5834\u5408\u306f\u3001MyKinsta\u306e\u300c\u30ed\u30b0\u30d3\u30e5\u30fc\u30a2\u300d\u3067\u7c21\u5358\u306b\u30a8\u30e9\u30fc\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u30a8\u30e9\u30fc\u304c\u30b5\u30a4\u30c8\u3067\u4f7f\u7528\u3059\u308b\u30d7\u30e9\u30b0\u30a4\u30f3\u306b\u8d77\u56e0\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u52b9\u7387\u7684\u306b\u554f\u984c\u3092\u7d5e\u308a\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_47775\" aria-describedby=\"caption-attachment-47775\" style=\"width: 1564px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-47775 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/09\/check-wordpress-error-logs-502-bad-gateway.jpg\" alt=\"\u30a8\u30e9\u30fc\u30ed\u30b0\u3092\u78ba\u8a8d\" width=\"1564\" height=\"987\"><figcaption id=\"caption-attachment-47775\" class=\"wp-caption-text\">\u30a8\u30e9\u30fc\u30ed\u30b0\u3092\u78ba\u8a8d<\/figcaption><\/figure>\n<p>\u304a\u4f7f\u3044\u306e\u30b5\u30fc\u30d0\u30fc\u3067\u30ed\u30b0\u3092\u78ba\u8a8d\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/wp-config-php\/\" target=\"_blank\" rel=\"noopener noreferrer\">wp-config.php<\/a>\u30d5\u30a1\u30a4\u30eb\u306b\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u8cbc\u308a\u4ed8\u3051\u3066\u3001\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-php\">define( 'WP_DEBUG', true );\ndefine( 'WP_DEBUG_LOG', true );\ndefine( 'WP_DEBUG_DISPLAY', false );<\/code><\/pre>\n<p><a href=\"https:\/\/kinsta.com\/blog\/wordpress-debug\/\">WordPress\u306e\u30c7\u30d0\u30c3\u30b0\u30e2\u30fc\u30c9\u3092\u6709\u52b9\u306b\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u3053\u3061\u3089<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u30ed\u30b0\u306f\u901a\u5e38\u3001\/wp-content\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3042\u308b\u3044\u306f\u3001Kinsta\u306e\u3088\u3046\u306b\u300clogs\u300d\u3068\u3044\u3046\u5c02\u7528\u30d5\u30a9\u30eb\u30c0\u304c\u3042\u308b\u5834\u5408\u3082\u3002<\/p>\n<figure id=\"attachment_6535\" aria-describedby=\"caption-attachment-6535\" style=\"width: 1314px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-6535 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2015\/08\/wordpress-error-logs-folder-sftp.png\" alt=\"logs\u30d5\u30a9\u30eb\u30c0\" width=\"1314\" height=\"481\"><figcaption id=\"caption-attachment-6535\" class=\"wp-caption-text\">logs\u30d5\u30a9\u30eb\u30c0<\/figcaption><\/figure>\n<p>\u307e\u305f\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/what-is-apache\/\" target=\"_blank\" rel=\"noopener noreferrer\">Apache<\/a>\u3068Nginx\u306e\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>Apache<\/strong>\uff1a\/var\/log\/apache2\/error.log<\/li>\n<li><strong>NGINX<\/strong>\uff1a\/var\/log\/nginx\/error.log<\/li>\n<\/ul>\n<p>Kinsta\u3067\u306f\u3001<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/wordpress-analytics-mykinsta\/\">\u5206\u6790\u6a5f\u80fd<\/a>\u3092\u4f7f\u3063\u3066\u3001502\u30a8\u30e9\u30fc\u306e\u7dcf\u6570\u5185\u8a33\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u3044\u3064\u3001\u3069\u306e\u304f\u3089\u3044\u306e\u983b\u5ea6\u3067\u767a\u751f\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30a8\u30e9\u30fc\u304c\u7d99\u7d9a\u7684\u306a\u554f\u984c\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3001\u3042\u308b\u3044\u306f\u81ea\u7136\u306b\u89e3\u6c7a\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u304b\u3092\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u306e\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_47777\" aria-describedby=\"caption-attachment-47777\" style=\"width: 1828px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-47777 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/09\/response-analysis-500-error-breakdown.png\" alt=\"\u30ec\u30b9\u30dd\u30f3\u30b9\u30bf\u30d6\u306e500\u756a\u53f0\u30a8\u30e9\u30fc\u306e\u5185\u8a33\" width=\"1828\" height=\"626\"><figcaption id=\"caption-attachment-47777\" class=\"wp-caption-text\">\u30ec\u30b9\u30dd\u30f3\u30b9\u30bf\u30d6\u306e500\u756a\u53f0\u30a8\u30e9\u30fc\u306e\u5185\u8a33<\/figcaption><\/figure>\n<h3>12. PHP\u3092\u518d\u8d77\u52d5\u3059\u308b<\/h3>\n<p>PHP\u3092\u518d\u8d77\u52d5\u3057\u3066\u307f\u308b\u306e\u3082\u624b\u3067\u3059\u3002Kinsta\u306e\u304a\u5ba2\u69d8\u306f\u3001MyKinsta\u306e\u30c4\u30fc\u30eb\u30e1\u30cb\u30e5\u30fc\u304b\u3089\u7c21\u5358\u306b<a href=\"https:\/\/kinsta.com\/jp\/docs\/wordpress-hosting\/php\/#restart-php\" target=\"_blank\" rel=\"noopener noreferrer\">PHP\u3092\u518d\u8d77\u52d5<\/a>\u3067\u304d\u307e\u3059\u3002Kinsta\u4ee5\u5916\u3092\u3054\u5229\u7528\u306e\u5834\u5408\u306f\u3001\u30ab\u30b9\u30bf\u30de\u30fc\u30b5\u30dd\u30fc\u30c8\u306b\u9023\u7d61\u3057\u3001PHP\u306e\u518d\u8d77\u52d5\u3092\u4f9d\u983c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<figure id=\"attachment_47776\" aria-describedby=\"caption-attachment-47776\" style=\"width: 1584px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-47776 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2017\/09\/restart-php-1.png\" alt=\"PHP\u3092\u518d\u8d77\u52d5\" width=\"1584\" height=\"953\"><figcaption id=\"caption-attachment-47776\" class=\"wp-caption-text\">PHP\u3092\u518d\u8d77\u52d5<\/figcaption><\/figure>\n<h3 id=\"9-php-timeout-issue\">13. PHP\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u554f\u984c\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/h3>\n<p>PHP\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306f\u30011\u3064\u306e\u30ef\u30fc\u30ab\u30fc\u30d7\u30ed\u30bb\u30b9\u304c\u3001\u30b5\u30fc\u30d0\u30fc\u306ePHP\u8a2d\u5b9a\u3067\u8a2d\u5b9a\u3055\u308c\u305f<code>max_execution_time<\/code>\u3001\u307e\u305f\u306f<code>max_input_time<\/code>\u3092\u8d85\u3048\u3066\u9577\u6642\u9593\u5b9f\u884c\u3055\u308c\u308b\u3068\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u5927\u898f\u6a21\u306a<a href=\"https:\/\/kinsta.com\/blog\/wordpress-import-issues\/\" target=\"_blank\" rel=\"noopener noreferrer\">WordPress\u30a4\u30f3\u30dd\u30fc\u30c8<\/a>\u3092\u884c\u3063\u3066\u3044\u308b\u3068\u304d\u306b\u3088\u304f\u898b\u3089\u308c\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u306f\u3001502\u30b5\u30fc\u30d0\u30fc\u30a8\u30e9\u30fc\u304c\u8868\u793a\u3055\u308c\u308b\u306e\u304c\u901a\u4f8b\u3067\u3001PHP\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u5236\u9650\u5024\u3092\u4e0a\u3052\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u3082\u3057\u307e\u305b\u3093\u3002<\/p>\n<p>\u304a\u4f7f\u3044\u306e\u30b5\u30fc\u30d0\u30fc\u3067\u3069\u306e\u3088\u3046\u306a\u5024\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3001\u307e\u305f\u5024\u3092\u4e0a\u3052\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u306b\u95a2\u3057\u3066\u306f\u3001\u3054\u5229\u7528\u306e\u30b5\u30fc\u30d0\u30fc\u4f1a\u793e\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002Kinsta\u3067\u306f\u3001\u3053\u306e\u5024\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067300\u79d2\uff085\u5206\uff09\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5229\u7528\u53ef\u80fd\u306aPHP\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u306e\u6700\u5927\u5024\u306f\u3001\u3054\u5229\u7528\u306e\u30d7\u30e9\u30f3\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u3053\u306e\u901a\u308a\u3001\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u65b9\u6cd5\u306f\u591a\u6570\u3042\u308a\u307e\u3059\u3002\u901a\u5e38\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u554f\u984c\u3067\u3042\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u30a8\u30e9\u30fc\u3067\u3042\u308b\u3053\u3068\u306f\u5c11\u306a\u3044\u3067\u3059\u3002\u307e\u305f\u3001\u8cea\u306e\u4f4e\u3044\u30b3\u30fc\u30c9\u3084\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u30af\u30a8\u30ea\u3092\u6301\u3064\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30c6\u30fc\u30de\u3082\u539f\u56e0\u306b\u306a\u308a\u5f97\u307e\u3059\u3002<\/p>\n<p>\u4ed6\u306b\u3082502\u30a8\u30e9\u30fc\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u65b9\u6cd5\u3092\u3054\u5b58\u77e5\u3067\u3057\u305f\u3089\u3001\u4ee5\u4e0b\u306e\u30b3\u30e1\u30f3\u30c8\u6b04\u3067\u305c\u3072\u304a\u77e5\u3089\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n<hr>\n<h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<h3 id=\"what-is-a-502-bad-gateway-error\" class=\"has-anchor-hash\">\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u3042\u308b\u30b5\u30fc\u30d0\u30fc\u304c\u5225\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u7121\u52b9\u306a\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d7\u3051\u53d6\u3063\u305f\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u30b5\u30fc\u30d0\u30fc\u901a\u4fe1\u306b\u4f55\u3089\u304b\u306e\u554f\u984c\u304c\u3042\u308b\u3053\u3068\u3092\u8b66\u544a\u3059\u308b\u4e00\u822c\u7684\u306a\u30a8\u30e9\u30fc\u3067\u3059\u3002<\/p>\n<h3>\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n<p>\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u306f\u901a\u5e38\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\/\u30b5\u30fc\u30d0\u30fc\u306b\u95a2\u9023\u3059\u308b\u554f\u984c\u306b\u3088\u3063\u3066\u767a\u751f\u3057\u307e\u3059\u304c\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u554f\u984c\u306b\u3088\u3063\u3066\u767a\u751f\u3059\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u300c502 Bad Gateway\u300d\u30a8\u30e9\u30fc\u306e\u89e3\u6c7a\u65b9\u6cd5\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/h3>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u6709\u52b9\u3067\u3059\u3002<\/p>\n<ol class=\"wp-block-kinsta-table-of-contents__list is-style-decimal\">\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#1-try-reloading-the-page\">\u30da\u30fc\u30b8\u3092\u518d\u8aad\u307f\u8fbc\u307f\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#2-check-the-site-status\">\u30b5\u30a4\u30c8\u306e\u7a3c\u50cd\u72b6\u6cc1\u3092\u78ba\u8a8d\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#3-try-a-different-browser\">\u5225\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u958b\u3044\u3066\u307f\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#4-try-in-incognito-mode\">\u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u30e2\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u307f\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#5-test-on-another-device\">\u5225\u306e\u30c7\u30d0\u30a4\u30b9\u3092\u4f7f\u7528\u3057\u3066\u307f\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#6-clear-your-browser-cache\">\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#3-dns-issue\">DNS\u306e\u554f\u984c\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#8-check-with-your-host\">\u30b5\u30fc\u30d0\u30fc\u4f1a\u793e\u306b\u554f\u3044\u5408\u308f\u305b\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#9-temporarily-disable-cdn-or-firewall\">\u4e00\u6642\u7684\u306bCDN\u307e\u305f\u306f\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3092\u7121\u52b9\u306b\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#10-check-your-plugins-and-themes\">\u30d7\u30e9\u30b0\u30a4\u30f3\u3068\u30c6\u30fc\u30de\u3092\u78ba\u8a8d\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#11-check-logs\">\u30ed\u30b0\u3092\u78ba\u8a8d\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#12-restart-php\">PHP\u3092\u518d\u8d77\u52d5\u3059\u308b<\/a><\/li>\n<li><a href=\"https:\/\/kinsta.com\/jp\/blog\/502-bad-gateway\/#9-php-timeout-issue\">PHP\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u554f\u984c\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u306f\u3001\u30a4\u30e9\u30a4\u30e9\u3057\u305f\u308a\u6df7\u4e71\u3057\u305f\u308a\u3059\u308b\u69d8\u3005\u306a 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