Nginx/PHP-CGI-502坏网关

当我四处浏览时（只需点击这里和那里的链接），我的网站似乎有问题，我的系统将随机返回502坏网关错误。我可以点击刷新按钮，它看起来工作正常

错误消息：

2012/08/16 11:17:54 [error] 26777#0: *1049 recv() failed 
    (104: Connection reset by peer) while reading response header from upstream, 
    client: 66.162.194.10, server: SITE, 
    request: "GET /wp-admin/admin-ajax.php?action=dashboard-widgets&widget=dashboard_secondary HTTP/1.1", 
    upstream: "fastcgi://unix:/tmp/php.socket:", host: "SITE", referrer: "SITE/wp-admin/index.php"

2012/08/16 11:17:54 [error] 26777#0: *1049 connect() failed 
    (111: Connection refused) while connecting to upstream, 
    client: 66.162.194.10, server: SITE, 
    request: "GET /wp-admin/admin-ajax.php?action=dashboard-widgets&widget=dashboard_secondary HTTP/1.1", 
    upstream: "http://127.0.0.1:9000/wp-admin/admin-ajax.php?action=dashboard-widgets&widget=dashboard_secondary", 
    host: "SITE", referrer: "http://SITE/wp-admin/index.php"

/etc/nginx/nginx.conf:
user www-data;
worker_processes 8;

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真倒霉不过，您有什么问题吗？上游通常是php fpm。如何配置php fpm（最大连接数、端口数）？你的/etc/nginx/conf.d/yourwebsite.conf是什么样子的（/etc/nginx/sites enabled/yourwebsite.conf在类似Debian的发行版中）罗瑞：我如何解决这个问题，以免收到502错误网关？约翰：显然，我保留了FPM网站配置的默认设置：