連接到上游時連接（）失敗（111：連接被拒絕）

訪問目錄 ( )502 Gateway中的 PHP 文件時遇到錯誤。http://example.com/dev/index.php日誌只是這樣說：

2011/09/30 23:47:54 [error] 31160#0: *35 connect() failed (111: Connection refused) while connecting to upstream, client: xx.xx.xx.xx, server: domain.com, request: "GET /dev/ HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "domain.com"

我以前從未經歷過這種情況。此類502 Gateway錯誤的解決方案是什麼？

這是nginx.conf：

user www-data;
worker_processes 4;
pid /var/run/nginx.pid;

events {
   worker_connections 768;
   # multi_accept on;
}

http {

   ##
   # Basic Settings
   ##

   sendfile on;
   tcp_nopush on;
   tcp_nodelay on;
   keepalive_timeout 65;
   types_hash_max_size 2048;
   # server_tokens off;

   # server_names_hash_bucket_size 64;
   # server_name_in_redirect off;

   include /etc/nginx/mime.types;
   default_type application/octet-stream;

   ##
   # Logging Settings
   ##

   access_log /var/log/nginx/access.log;
   error_log /var/log/nginx/error.log;

   ##
   # Gzip Settings
   ##

   gzip on;
   gzip_disable "msie6";

   # gzip_vary on;
   # gzip_proxied any;
   # gzip_comp_level 6;
   # gzip_buffers 16 8k;
   # gzip_http_version 1.1;
   # gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

   ##
   # Virtual Host Configs
   ##

   include /etc/nginx/conf.d/*.conf;
   include /etc/nginx/sites-enabled/*;
}

聽起來您還沒有為 Nginx 啟動和配置後端。在上下文中啟動php-fpm並添加以下內容：nginx.conf``http

server {
   listen 127.0.0.1;
   server_name localhost;

   error_log /var/log/nginx/localhost.error_log info;

   root /var/www/localhost/htdocs;

   location ~ \.php$ {
       fastcgi_pass 127.0.0.1:9000;
       include /etc/nginx/conf.d/*.conf;
       include /etc/nginx/sites-enabled/*;

       fastcgi_intercept_errors        on;
       error_page 404 /error/404.php;
   }
}

此答案僅適用於出現以下錯誤的人：

連接到上游、客戶端時，connect() 失敗（111：連接被拒絕）…. fastcgi://

$$ ::1 $$:9000

重寫你的 nginx 配置以使用 ip，而不是 dns。例如，127.0.0.1代替localhost，或從 /etc/hosts 中刪除 ipv6 別名。

引用自：https://serverfault.com/questions/317393