{"id":34252,"date":"2026-11-04T18:00:00","date_gmt":"2026-11-04T10:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=34252"},"modified":"2026-10-27T15:07:29","modified_gmt":"2026-10-27T07:07:29","slug":"5xx-500-502-503-504-shared-hosting-vps","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/5xx-500-502-503-504-shared-hosting-vps\/","title":{"rendered":"\u7ad9\u70b9 5xx \u5206\u5c42\u5b9a\u4f4d\uff1a500\u3001502\u3001503\u3001504 \u5728\u5171\u4eab\u4e3b\u673a\u4e0e VPS \u4e0a\u5206\u522b\u8be5\u67e5\u54ea\u4e00\u5c42"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/5xx-500-502-503-504-shared-hosting-vps-cover.webp\" alt=\"5xx \u9519\u8bef\u5206\u5c42\u5b9a\u4f4d\u5c01\u9762\" loading=\"lazy\" \/><\/p>\n<p>\u7ad9\u70b9\u7a81\u7136\u8fd4\u56de 5xx\uff0c\u5f88\u591a\u4eba\u7684\u7b2c\u4e00\u53cd\u5e94\u662f\u91cd\u542f\u670d\u52a1\u5668\u3001\u6362 PHP \u7248\u672c\uff0c\u6298\u817e\u534a\u5c0f\u65f6\u624d\u53d1\u73b0\u95ee\u9898\u51fa\u5728\u4e00\u6761\u5199\u9519\u7684 <code>.htaccess<\/code> \u89c4\u5219\u4e0a\u3002\u8fd9\u7bc7\u6587\u7ae0\u6309\u72b6\u6001\u7801\u8bb2\u6e05\u695a\u5982\u4f55\u5b9a\u4f4d\uff1a500\u3001502\u3001503\u3001504 \u5206\u522b\u5bf9\u5e94\u5e94\u7528\u3001\u7f51\u5173\u3001\u8d44\u6e90\u3001\u8d85\u65f6\u56db\u7c7b\u6545\u969c\uff0c\u800c<a href=\"https:\/\/cn.hostease.com\/shared-hosting.html\">\u5171\u4eab\u4e3b\u673a<\/a>\uff08\u4e00\u53f0\u670d\u52a1\u5668\u5212\u5206\u591a\u4e2a\u7ad9\u70b9\u3001\u7528\u6237\u6ca1\u6709 root \u6743\u9650\uff09\u548c <a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS<\/a>\uff08<a href=\"https:\/\/cn.hostease.com\/vps\/\">\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668<\/a>\uff0c\u6709\u72ec\u7acb\u7cfb\u7edf\u548c root \u6743\u9650\uff09\u80fd\u62ff\u5230\u7684\u6392\u67e5\u5165\u53e3\u5dee\u522b\u5f88\u5927\u3002\u65b9\u5411\u9009\u9519\uff0c\u65e5\u5fd7\u770b\u5230\u5929\u4eae\u4e5f\u6ca1\u6709\u7ed3\u8bba\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u540c\u4e00\u4e2a 5xx \u8981\u62c6\u6210\u56db\u5c42\u770b<\/h2>\n<p>5xx \u7684\u542b\u4e49\u5f88\u5355\u7eaf\uff1a\u9519\u8bef\u7531\u670d\u52a1\u7aef\u4ea7\u751f\u3002\u4f46\u201c\u670d\u52a1\u7aef\u201d\u4e0d\u662f\u4e00\u53f0\u673a\u5668\uff0c\u800c\u662f\u4e00\u6761\u94fe\uff1a\u63a5\u5165\u5c42\u662f Web \u670d\u52a1\u5668\uff08Nginx \u6216 Apache\uff09\uff0c\u4e2d\u95f4\u662f\u5e94\u7528\u8fd0\u884c\u65f6\uff08PHP-FPM\u3001Node\u3001Python \u8fdb\u7a0b\uff09\uff0c\u518d\u5f80\u4e0b\u662f\u6570\u636e\u5e93\u3001\u7f13\u5b58\u548c\u5916\u90e8\u63a5\u53e3\u3002\u94fe\u4e0a\u6bcf\u4e00\u73af\u90fd\u53ef\u80fd\u8fd4\u56de 5xx\uff0c\u53ea\u662f\u72b6\u6001\u7801\u4e0d\u540c\u3002<\/p>\n<p>\u72b6\u6001\u7801\u672c\u8eab\u5c31\u662f\u65ad\u70b9\u7684\u5750\u6807\u3002500 \u8868\u793a\u5e94\u7528\u81ea\u5df1\u5d29\u4e86\uff0c\u8bf7\u6c42\u5df2\u7ecf\u8fdb\u5230 PHP \u91cc\uff1b502 \u8868\u793a\u7f51\u5173\u8fde\u63a5\u540e\u7aef\u5931\u8d25\uff0c\u8bf7\u6c42\u6839\u672c\u6ca1\u9001\u5230\u5e94\u7528\uff1b503 \u8868\u793a\u540e\u7aef\u660e\u786e\u62d2\u7edd\u4e86\u8fd9\u6b21\u8bf7\u6c42\uff0c\u56e0\u4e3a\u5b83\u6ca1\u6709\u4f59\u91cf\uff1b504 \u8868\u793a\u540e\u7aef\u8fd8\u5728\u8dd1\uff0c\u4f46\u6162\u5230\u7f51\u5173\u653e\u5f03\u7b49\u5f85\u3002\u56db\u7c7b\u6545\u969c\u7684\u65e5\u5fd7\u4f4d\u7f6e\u3001\u53ef\u6539\u53c2\u6570\u3001\u8d23\u4efb\u65b9\u90fd\u4e0d\u4e00\u6837\u3002<\/p>\n<p>\u771f\u6b63\u7684\u5206\u6c34\u5cad\u662f\u6743\u9650\u3002\u5171\u4eab\u4e3b\u673a\u770b\u4e0d\u5230 Nginx \u914d\u7f6e\uff0c\u6539\u4e0d\u4e86 <code>php.ini<\/code>\uff0c\u4e5f\u6ca1\u6709 root \u8bfb\u7cfb\u7edf\u65e5\u5fd7\uff1bVPS \u5168\u90e8\u53ef\u89c1\uff0c\u8fd8\u80fd\u7528 <code>top<\/code>\u3001<code>ss<\/code> \u5f80\u4e0b\u94bb\u3002\u540c\u4e00\u4e2a 502\uff0cVPS \u4e0a\u4e09\u5206\u949f\u80fd\u5b9a\u4f4d\u5230 PHP-FPM \u8fdb\u7a0b\u6c60\u6253\u6ee1\uff0c\u5171\u4eab\u4e3b\u673a\u4e0a\u53ea\u80fd\u5148\u770b\u9762\u677f\u9519\u8bef\u65e5\u5fd7\u3001\u518d\u6392\u67e5\u63d2\u4ef6\u548c <code>.htaccess<\/code>\uff0c\u5176\u4f59\u4ea4\u7ed9\u5de5\u5355\u3002\u6392\u67e5\u987a\u5e8f\u5fc5\u987b\u8ddf\u7740\u6743\u9650\u8d70\uff0c\u800c\u4e0d\u662f\u8ddf\u7740\u641c\u7d22\u5f15\u64ce\u7b2c\u4e00\u7bc7\u6559\u7a0b\u8d70\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/5xx-500-502-503-504-shared-hosting-vps-error-layers.webp\" alt=\"5xx \u72b6\u6001\u7801\u4e0e\u8d23\u4efb\u5c42\u5bf9\u5e94\u5173\u7cfb\" loading=\"lazy\" \/><\/p>\n<h2>500 Internal Server Error\uff1a\u5148\u6000\u7591\u5e94\u7528\u5c42<\/h2>\n<p>500 \u662f\u5e94\u7528\u629b\u51fa\u7684\u9519\u8bef\uff0c\u7edd\u5927\u591a\u6570\u5bf9\u5e94 PHP \u7684 fatal error\uff1a\u8c03\u7528\u4e86\u4e0d\u5b58\u5728\u7684\u51fd\u6570\u3001\u5185\u5b58\u8d85\u9650\u3001\u8bed\u6cd5\u9519\u8bef\uff0c\u6216\u8005\u7528\u4e86\u4e0e\u5f53\u524d PHP \u7248\u672c\u4e0d\u517c\u5bb9\u7684\u6269\u5c55\u3002<\/p>\n<p>\u5728\u5171\u4eab\u4e3b\u673a\u4e0a\uff0c\u4f60\u80fd\u52a8\u7684\u53ea\u6709\u4e09\u4e2a\u5730\u65b9\uff0c\u67e5\u5b8c\u57fa\u672c\u8986\u76d6\u516b\u6210 500\uff1a<\/p>\n<ul>\n<li>\u63a7\u5236\u9762\u677f\u7684\u9519\u8bef\u65e5\u5fd7\uff1a\u627e\u5230\u5bf9\u5e94\u7ad9\u70b9\u7684 <code>error_log<\/code>\uff0c\u770b\u6700\u8fd1\u4e00\u6761 fatal error \u7684\u6587\u4ef6\u540d\u548c\u884c\u53f7\uff0c\u8fd9\u662f\u6700\u76f4\u63a5\u7684\u8bc1\u636e<\/li>\n<li><code>.htaccess<\/code> \u4e0e PHP \u7248\u672c\uff1a\u9762\u677f\u91cc\u5207\u6362\u8fc7 PHP \u7248\u672c\u540e\uff0c\u65e7\u63d2\u4ef6\u91cc\u7684\u5e9f\u5f03\u51fd\u6570\u4f1a\u7acb\u523b\u62a5 500\uff1b<code>.htaccess<\/code> \u591a\u4e00\u884c\u9519\u8bef\u7684 <code>php_value<\/code> \u4e5f\u4f1a\u8ba9\u6574\u7ad9 500<\/li>\n<li>\u6587\u4ef6\u6743\u9650\uff1a\u76ee\u5f55 755\u3001\u6587\u4ef6 644\uff0c<code>wp-config.php<\/code> \u88ab\u6539\u6210 777 \u53cd\u800c\u4f1a\u88ab\u90e8\u5206\u4e3b\u673a\u76f4\u63a5\u62d2\u7edd\u6267\u884c<\/li>\n<\/ul>\n<p>\u5728 VPS \u4e0a\u53ef\u4ee5\u7ee7\u7eed\u5f80\u4e0b\u94bb\uff0c\u770b\u8be5\u8bf7\u6c42\u6709\u6ca1\u6709\u8fdb\u5230 PHP\uff0c\u518d\u770b PHP-FPM \u7684\u9519\u8bef\u8f93\u51fa\uff1a<\/p>\n<pre><code class=\"language-bash\">tail -n 50 \/var\/log\/nginx\/error.log\njournalctl -u php8.3-fpm -n 50 --no-pager\nphp -l \/var\/www\/site\/index.php\n<\/code><\/pre>\n<p><code>php -l<\/code> \u53ea\u505a\u8bed\u6cd5\u68c0\u67e5\uff0c\u4f46\u80fd\u7acb\u523b\u6392\u9664\u6539\u4ee3\u7801\u6539\u5d29\u7684\u60c5\u51b5\u3002\u8981\u628a\u8bbf\u95ee\u65e5\u5fd7\u4e0e\u9519\u8bef\u65e5\u5fd7\u5bf9\u8d77\u6765\u770b\uff0c\u53ef\u53c2\u8003<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/server-goaccess-nginx\/\">\u670d\u52a1\u5668\u8bbf\u95ee\u65e5\u5fd7\u5206\u6790<\/a>\uff0c\u7528\u62a5\u8868\u4ee3\u66ff\u624b\u5de5 grep\u3002<\/p>\n<h2>502 Bad Gateway\uff1a\u7f51\u5173\u8fde\u4e0d\u4e0a\u540e\u7aef<\/h2>\n<p>502 \u7684\u8bed\u4e49\u5f88\u660e\u786e\uff1aNginx\uff08\u6216\u8d1f\u8f7d\u5747\u8861\u5668\uff09\u4f5c\u4e3a\u7f51\u5173\uff0c\u628a\u8bf7\u6c42\u8f6c\u7ed9 upstream \u65f6\u5931\u8d25\u4e86\u3002\u539f\u56e0\u901a\u5e38\u4e09\u79cd\u2014\u2014\u540e\u7aef\u6ca1\u6709\u76d1\u542c\u90a3\u4e2a\u7aef\u53e3\u3001\u8fdb\u7a0b\u5d29\u6e83\u540e socket \u6d88\u5931\u3001\u54cd\u5e94\u8d85\u65f6\u88ab\u4e0a\u6e38\u65ad\u5f00\u3002<\/p>\n<p>\u5728 VPS \u4e0a\uff0c\u5148\u7528\u4e24\u6761\u547d\u4ee4\u786e\u8ba4\u540e\u7aef\u5230\u5e95\u6709\u6ca1\u6709\u6d3b\u4eba\uff1a<\/p>\n<pre><code class=\"language-bash\">ss -lntp | grep 9000\ncurl -I --max-time 5 http:\/\/127.0.0.1:9000\/status\n<\/code><\/pre>\n<p>\u5982\u679c 9000 \u7aef\u53e3\u6ca1\u6709\u8fdb\u7a0b\u76d1\u542c\uff0c\u95ee\u9898\u5c31\u7ed3\u675f\u4e86\uff1a\u53bb <code>systemctl status php8.3-fpm<\/code> \u770b\u8fdb\u7a0b\u6c60\u4e3a\u4ec0\u4e48\u6ca1\u8d77\u6765\u3002\u5982\u679c\u7aef\u53e3\u5728\u76d1\u542c\u4f46\u65e5\u5fd7\u91cc\u53cd\u590d\u51fa\u73b0 <code>connect() failed (111: Connection refused)<\/code>\uff0c\u8bf4\u660e socket \u8def\u5f84\u5bf9\u4e0d\u4e0a\uff0c\u6216 pool \u7684 <code>listen<\/code> \u4e0e Nginx \u7684 <code>fastcgi_pass<\/code> \u6307\u5411\u4e86\u4e24\u4e2a\u4f4d\u7f6e\u3002\u591a\u53f0\u540e\u7aef\u65f6\uff0c\u5355\u8282\u70b9\u88ab\u5065\u5eb7\u68c0\u67e5\u6458\u9664\u4e5f\u4f1a\u9020\u6210\u95f4\u6b47\u6027 502\uff0c\u505a\u6cd5\u89c1<a href=\"https:\/\/cn.hostease.com\/blog\/tutorials\/nginx-upstream-load-balancing\/\">Nginx \u8d1f\u8f7d\u5747\u8861\u6392\u969c<\/a>\u3002<\/p>\n<p>\u5171\u4eab\u4e3b\u673a\u4e0a\u6ca1\u6709 upstream \u7ed9\u4f60\u8c03\uff0c502 \u901a\u5e38\u5bf9\u5e94\u4e24\u79cd\u73b0\u5b9e\uff1a\u7ad9\u70b9\u8fdb\u7a0b\u88ab\u8d44\u6e90\u9650\u5236\u6740\u6389\uff0c\u6216\u5e76\u53d1\u6253\u6ee1\u540e\u9762\u7684 PHP \u6c60\u3002\u4f60\u80fd\u505a\u7684\u662f\u628a\u5355\u8bf7\u6c42\u53d8\u8f7b\u2014\u2014\u5173\u6389\u957f\u671f\u5360\u8fdb\u7a0b\u7684\u63d2\u4ef6\u3001\u9759\u6001\u8d44\u6e90\u4ea4\u7ed9\u7f13\u5b58\u3001\u5b9a\u65f6\u4efb\u52a1\u632a\u5230\u4f4e\u5cf0\u671f\u3002\u8fdb\u7a0b\u6c60\u53c2\u6570\u7684\u6362\u7b97\u601d\u8def\u4ecd\u7136\u9002\u7528\uff0c\u53ef\u53c2\u8003<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/php-fpm-tuning-pm-502\/\">PHP-FPM \u8fdb\u7a0b\u6c60\u8c03\u4f18<\/a>\u91cc <code>pm.max_children<\/code> \u4e0e\u5185\u5b58\u7684\u5173\u7cfb\uff0c\u53ea\u662f\u6267\u884c\u4eba\u53d8\u6210\u4e86\u4e3b\u673a\u5546\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/5xx-500-502-503-504-shared-hosting-vps-gateway-break.webp\" alt=\"\u7f51\u5173\u4e0e\u540e\u7aef\u8fdb\u7a0b\u4e4b\u95f4\u65ad\u5f00\u7684\u4f4d\u7f6e\" loading=\"lazy\" \/><\/p>\n<h2>503 Service Unavailable\uff1a\u4e3b\u52a8\u62d2\u7edd\u8bf7\u6c42<\/h2>\n<p>503 \u548c\u524d\u4e24\u4e2a\u4e0d\u4e00\u6837\uff0c\u5b83\u662f\u201c\u670d\u52a1\u8fd8\u5728\uff0c\u4f46\u73b0\u5728\u5904\u7406\u4e0d\u4e86\u201d\u3002\u56db\u4e2a\u5e38\u89c1\u6765\u6e90\uff1aPHP-FPM \u7684 <code>pm.max_children<\/code> \u6253\u6ee1\u540e\u65b0\u8bf7\u6c42\u88ab\u4e22\u5f03\uff1bApache \u7684 <code>MaxRequestWorkers<\/code> \u7528\u5c3d\uff1bWAF \u6216\u9650\u6d41\u89c4\u5219\u628a\u7a81\u53d1\u6d41\u91cf\u5224\u6210\u653b\u51fb\uff1b\u7ad9\u70b9\u5904\u4e8e\u7ef4\u62a4\u6a21\u5f0f\uff08WordPress \u7684 <code>.maintenance<\/code> \u6587\u4ef6\u751f\u6548\u65f6\u4e5f\u8fd4\u56de 503\uff09\u3002<\/p>\n<p>\u5224\u65ad\u662f\u4e0d\u662f\u5bb9\u91cf\u95ee\u9898\uff0c\u505a\u4e00\u4e2a\u4e58\u6cd5\u5c31\u591f\uff1a<code>pm.max_children<\/code> \u4e58\u4ee5\u5355\u4e2a PHP \u8fdb\u7a0b\u7684\u5e38\u9a7b\u5185\u5b58\uff0c\u5fc5\u987b\u5c0f\u4e8e\u53ef\u7528\u5185\u5b58\u30028 \u4e2a\u8fdb\u7a0b\u3001\u6bcf\u4e2a 60MB \u5c31\u8981 480MB \u4ee5\u4e0a\uff0c\u518d\u52a0 MySQL \u548c\u7cfb\u7edf\u5f00\u9500\u3002\u628a <code>max_children<\/code> \u8c03\u5230 30 \u800c\u4e0d\u52a0\u5185\u5b58\uff0c\u7cfb\u7edf\u4f1a\u7528 swap\uff0c502 \u548c 504 \u4e00\u8d77\u51fa\u73b0\u3002<\/p>\n<p>\u5171\u4eab\u4e3b\u673a\u7684 503 \u591a\u6765\u81ea\u5e73\u53f0\u4fa7\u5e76\u53d1\u4e0a\u9650\u6216 CPU \u79d2\u6570\u9650\u5236\uff0c\u9762\u677f\u201c\u8d44\u6e90\u4f7f\u7528\u201d\u9875\u4f1a\u6709\u5bf9\u5e94\u5c16\u5cf0\uff0c\u65e5\u5fd7\u91cc\u8868\u73b0\u4e3a\u540c\u4e00\u65f6\u95f4\u70b9\u5927\u91cf\u8bf7\u6c42\u88ab\u62d2\u3002\u8fd9\u65f6\u6269\u5bb9\u6bd4\u8c03\u53c2\u6709\u6548\uff1b\u5148\u5206\u6e05\u662f\u6d41\u91cf\u6da8\u4e86\u8fd8\u662f\u5355\u8bf7\u6c42\u592a\u91cd\uff0c\u53ef\u5bf9\u7740<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/cpu-load-troubleshooting-top-pidstat\/\">\u670d\u52a1\u5668 CPU \u8d1f\u8f7d\u8fc7\u9ad8\u6392\u67e5<\/a>\u91cc\u7684 <code>top<\/code> \u4e0e <code>pidstat<\/code> \u65b9\u6cd5\u770b\u8c01\u5728\u5403\u8d44\u6e90\u3002<\/p>\n<h2>504 Gateway Timeout\uff1a\u6162\uff0c\u800c\u4e0d\u662f\u65ad<\/h2>\n<p>504 \u548c 502 \u53ea\u5dee\u4e00\u4e2a\u5b57\uff0c\u542b\u4e49\u5b8c\u5168\u4e0d\u540c\uff1a\u540e\u7aef\u8fd8\u6d3b\u7740\uff0c\u53ea\u662f\u6162\u5230\u7f51\u5173\u7b49\u4e0d\u4e0b\u53bb\u3002Nginx \u7684 <code>fastcgi_read_timeout<\/code> \u4e0e <code>proxy_read_timeout<\/code> \u9ed8\u8ba4 60 \u79d2\uff0c\u8d85\u8fc7\u5c31\u8fd4\u56de 504\uff0c\u800c PHP \u90a3\u8fb9\u53ef\u80fd\u8fd8\u5728\u8dd1\u4e00\u4e2a\u5de8\u5927\u7684\u67e5\u8be2\u3002<\/p>\n<p>\u6240\u4ee5 504 \u7684\u7b2c\u4e00\u6b65\u4e0d\u662f\u8c03\u8d85\u65f6\uff0c\u800c\u662f\u627e\u51fa\u8c01\u6162\u3002\u7528\u4e00\u6761\u547d\u4ee4\u6d4b\u51fa\u540e\u7aef\u771f\u5b9e\u8017\u65f6\uff1a<\/p>\n<pre><code class=\"language-bash\">curl -o \/dev\/null -s -w &quot;\u72b6\u6001\u7801:%{http_code} \u603b\u8017\u65f6:%{time_total}s\\n&quot; https:\/\/\u4f60\u7684\u57df\u540d\/\n<\/code><\/pre>\n<p>\u5982\u679c\u9996\u9875 1 \u79d2\u5185\u8fd4\u56de\u3001\u53ea\u6709\u67d0\u4e2a\u9875\u9762 504\uff0c\u95ee\u9898\u5c31\u5728\u90a3\u4e2a\u9875\u9762\u7684\u4e1a\u52a1\u903b\u8f91\u91cc\u3002\u63a5\u7740\u770b\u6570\u636e\u5e93\uff1a\u6162\u67e5\u8be2\u3001\u9501\u7b49\u5f85\u3001\u8fde\u63a5\u6570\u8017\u5c3d\u90fd\u4f1a\u8ba9 PHP \u5361\u4f4f\uff1b\u8fde\u63a5\u6570\u6253\u6ee1\u65f6 504 \u548c 500 \u4f1a\u4ea4\u66ff\u51fa\u73b0\uff0c\u5904\u7406\u601d\u8def\u89c1<a href=\"https:\/\/cn.hostease.com\/blog\/tutorials\/mysql-database-too-many-connections\/\">\u6570\u636e\u5e93\u8fde\u63a5\u6570\u8d85\u9650\u6392\u67e5<\/a>\u3002<\/p>\n<p>\u5728\u5171\u4eab\u4e3b\u673a\u4e0a\u4f60\u6539\u4e0d\u4e86\u8d85\u65f6\u9608\u503c\uff0c\u80fd\u505a\u7684\u662f\u628a\u5355\u8bf7\u6c42\u8017\u65f6\u538b\u4e0b\u6765\uff1a\u62c6\u5206\u957f\u4efb\u52a1\u3001\u628a\u540c\u6b65\u5bfc\u5165\u548c\u63a8\u9001\u6539\u6210\u961f\u5217\u3001\u7ed9\u52a8\u6001\u9875\u52a0\u7f13\u5b58\u3002\u8fd9\u7c7b\u4f18\u5316\u5bf9 502\u3001503\u3001504 \u540c\u65f6\u6709\u6548\uff0c\u51cf\u7684\u662f\u540c\u4e00\u4efd\u8d1f\u8f7d\u3002<\/p>\n<h2>\u5171\u4eab\u4e3b\u673a\u4e0e VPS \u7684\u53ef\u89c1\u8303\u56f4\u5dee\u5f02<\/h2>\n<p>\u56db\u7c7b\u653e\u8fdb\u540c\u4e00\u5f20\u5224\u65ad\u8868\uff0c\u6700\u5bb9\u6613\u641e\u9519\u7684\u662f\u201c\u6211\u80fd\u770b\u5230\u4ec0\u4e48\u201d\u3002\u5dee\u522b\u96c6\u4e2d\u5728\u56db\u70b9\uff1a<\/p>\n<ul>\n<li>\u65e5\u5fd7\u5165\u53e3\uff1a\u5171\u4eab\u4e3b\u673a\u53ea\u6709\u9762\u677f\u91cc\u7684\u7ad9\u70b9\u9519\u8bef\u65e5\u5fd7\uff0c\u6761\u6570\u6709\u9650\uff1bVPS \u6709 <code>\/var\/log\/nginx\/error.log<\/code>\u3001<code>journalctl<\/code>\u3001<code>php-fpm<\/code> \u6162\u65e5\u5fd7\u4e09\u4e2a\u72ec\u7acb\u901a\u9053<\/li>\n<li>\u914d\u7f6e\u6743\u9650\uff1a\u5171\u4eab\u4e3b\u673a\u53ea\u80fd\u5199 <code>.htaccess<\/code> \u548c\u6709\u9650\u7684 <code>user.ini<\/code>\uff1bVPS \u53ef\u4ee5\u76f4\u63a5\u6539 <code>php.ini<\/code>\u3001<code>nginx.conf<\/code>\u3001<code>pool.d\/*.conf<\/code><\/li>\n<li>\u8fdb\u7a0b\u53ef\u89c1\u6027\uff1a\u5171\u4eab\u4e3b\u673a\u770b\u4e0d\u5230\u81ea\u5df1\u7684\u8fdb\u7a0b\u6811\uff1bVPS \u80fd\u7528 <code>top<\/code>\u3001<code>pidstat<\/code>\u3001<code>iftop<\/code> \u5b9e\u65f6\u89c2\u5bdf<\/li>\n<li>\u5904\u7f6e\u624b\u6bb5\uff1a\u5171\u4eab\u4e3b\u673a\u662f\u63d0\u5de5\u5355\u3001\u6362\u5957\u9910\u3001\u5173\u63d2\u4ef6\uff1bVPS \u662f\u81ea\u5df1\u8c03\u53c2\u3001\u52a0\u5185\u5b58\u3001\u62c6\u670d\u52a1<\/li>\n<\/ul>\n<p>\u8fd9\u4e2a\u5dee\u5f02\u76f4\u63a5\u51b3\u5b9a\u6392\u67e5\u987a\u5e8f\uff1a\u6ca1\u6709 root \u5c31\u4ece\u6700\u4e0a\u5c42\u5f80\u4e0b\u67e5\uff08\u65e5\u5fd7\u2192\u7248\u672c\u2192\u63d2\u4ef6\u2192\u89c4\u5219\uff09\uff0c\u6709 root \u5c31\u4ece\u6700\u5e95\u5c42\u5f80\u4e0a\u67e5\uff08\u8d44\u6e90\u2192\u8fdb\u7a0b\u2192\u7f51\u5173\u914d\u7f6e\u2192\u4ee3\u7801\uff09\u3002\u53cd\u8fc7\u6765\u505a\uff0c\u53ea\u4f1a\u5728\u6ca1\u6743\u9650\u7684\u5730\u65b9\u53cd\u590d\u786e\u8ba4\u4e00\u4e2a\u6539\u4e0d\u52a8\u7684\u914d\u7f6e\u3002<\/p>\n<h2>\u4e00\u5957\u4e94\u5206\u949f\u80fd\u8dd1\u5b8c\u7684\u5b9a\u4f4d\u987a\u5e8f<\/h2>\n<p>\u65e0\u8bba\u54ea\u4e2a\u5e73\u53f0\uff0c\u8fd9\u4e94\u6b65\u5f53\u56fa\u5b9a\u52a8\u4f5c\uff0c\u591a\u6570 5xx \u4e94\u5206\u949f\u5185\u5c31\u6709\u65b9\u5411\uff1a<\/p>\n<ol>\n<li>\u8bb0\u4e0b\u72b6\u6001\u7801\u3001\u51fa\u95ee\u9898\u7684 URL \u548c\u7cbe\u786e\u5230\u5206\u949f\u7684\u65f6\u95f4\u70b9\uff0c\u540e\u9762\u6240\u6709\u65e5\u5fd7\u90fd\u6309\u8fd9\u4e2a\u65f6\u95f4\u7a97\u5207<\/li>\n<li>\u6253\u5f00\u5bf9\u5e94\u5c42\u7684\u65e5\u5fd7\uff0c\u53ea\u770b\u8be5\u65f6\u95f4\u70b9\u524d\u540e\u4e24\u5206\u949f\uff0c\u522b\u4ece\u5934\u7ffb\u5230\u5c3e<\/li>\n<li>\u7528\u6700\u5c0f\u8bf7\u6c42\u590d\u73b0\uff1a\u5148 <code>curl -I<\/code> \u9996\u9875\uff0c\u518d\u5355\u72ec\u8bf7\u6c42\u4e00\u4e2a\u53ea\u6709\u5065\u5eb7\u68c0\u67e5\u7684\u63a2\u9488\u9875<\/li>\n<li>\u4e00\u6b21\u53ea\u6539\u4e00\u5904\uff08\u7248\u672c\u3001\u8d85\u65f6\u3001\u8fdb\u7a0b\u6570\u3001\u89c4\u5219\uff09\uff0c\u6539\u5b8c\u7acb\u5373\u91cd\u542f\u5bf9\u5e94\u670d\u52a1\uff0c\u907f\u514d\u4e24\u4e2a\u53d8\u91cf\u6df7\u5728\u4e00\u8d77<\/li>\n<li>\u89c2\u5bdf\u4e94\u5206\u949f\uff0c\u786e\u8ba4\u9519\u8bef\u7387\u56de\u843d\u518d\u6536\u5de5\uff0c\u540c\u65f6\u628a\u8fd9\u6b21\u7684\u65e5\u5fd7\u7247\u6bb5\u7559\u6863\uff0c\u4e0b\u6b21\u540c\u7c7b\u6545\u969c\u80fd\u76f4\u63a5\u6bd4\u5bf9<\/li>\n<\/ol>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/5xx-500-502-503-504-shared-hosting-vps-diagnosis-order.webp\" alt=\"\u6392\u67e5\u987a\u5e8f\u4e0e\u5bf9\u5e94\u65e5\u5fd7\u5165\u53e3\" loading=\"lazy\" \/><\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>5xx \u4e0d\u662f\u201c\u670d\u52a1\u5668\u574f\u4e86\u201d\u7684\u540c\u4e49\u8bcd\uff0c\u5b83\u662f\u56db\u7c7b\u65ad\u70b9\u7684\u5750\u6807\uff1a500 \u770b\u5e94\u7528\u4ee3\u7801\u548c PHP \u7248\u672c\uff0c502 \u770b\u7f51\u5173\u4e0e\u540e\u7aef\u7684\u8fde\u63a5\uff0c503 \u770b\u8d44\u6e90\u4f59\u91cf\u4e0e\u9650\u6d41\uff0c504 \u770b\u5355\u8bf7\u6c42\u6162\u5728\u54ea\u4e00\u6bb5\u3002\u5171\u4eab\u4e3b\u673a\u4e0e VPS \u7684\u5dee\u522b\u4e0d\u5728\u6545\u969c\u672c\u8eab\uff0c\u800c\u5728\u4f60\u80fd\u5426\u8bfb\u5230\u90a3\u5c42\u7684\u65e5\u5fd7\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5bf9\u7740\u4e00\u7247 5xx \u9875\u9762\uff0c\u5efa\u8bae\u5148\u6309\u4e0a\u9762\u7684\u987a\u5e8f\u8bb0\u4e0b\u72b6\u6001\u7801\u3001\u65f6\u95f4\u70b9\u548c\u65e5\u5fd7\u7247\u6bb5\uff0c\u518d\u51b3\u5b9a\u6539\u914d\u7f6e\u8fd8\u662f\u63d0\u5de5\u5355\u3002\u7ad9\u70b9\u957f\u671f\u53cd\u590d\u51fa\u73b0 502 \u6216 503\uff0c\u8bf4\u660e\u89c4\u683c\u8ddf\u4e0d\u4e0a\u8bbf\u95ee\u91cf\uff0c\u53ef\u4ee5\u8003\u8651 Hostease \u7684 VPS \u4e3b\u673a\uff0c\u628a\u8fdb\u7a0b\u6c60\u4e0e\u8d85\u65f6\u7684\u8c03\u6574\u6743\u62ff\u56de\u81ea\u5df1\u624b\u91cc\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7ad9\u70b9\u62a5 5xx \u65f6\u5982\u4f55\u5feb\u901f\u5b9a\u4f4d\uff1f\u672c\u6587\u6309 500\u3001502\u3001503\u3001504 \u56db\u4e2a\u72b6\u6001\u7801\u62c6\u89e3\u8d23\u4efb\u5c42\uff0c\u8bf4\u660e\u5171\u4eab\u4e3b\u673a\u4e0e VPS \u4e0a\u5404\u81ea\u80fd\u67e5\u7684\u65e5\u5fd7\u3001\u547d\u4ee4\u4e0e\u5904\u7f6e\u8fb9\u754c\uff0c\u9644\u4e00\u5957\u4e94\u5206\u949f\u6392\u67e5\u987a\u5e8f\u3002<\/p>\n","protected":false},"author":2,"featured_media":34248,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[5472,4582,5473,5474,5471],"class_list":["post-34252","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-500internalservererror","tag-502badgateway","tag-503serviceunavailable","tag-504gatewaytimeout","tag-5xx"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/5xx-500-502-503-504-shared-hosting-vps-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/34252","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=34252"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/34252\/revisions"}],"predecessor-version":[{"id":34259,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/34252\/revisions\/34259"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/34248"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=34252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=34252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=34252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}