Nginx 错误“1024 个worker_connections 不够”

Question

我的网站正在使用 Nginx 和反向代理的 Docker 映像中运行。网站在流量大的情况下可以正常工作几个小时，但最终停止工作并且没有响应，出现 5** 超时错误。在 AWS Elastic Beanstalks Nginx-log 中，我发现了以下错误消息：

[alert] 18037#0: 1024 个worker_connections 不够

我担心我的自定义 Nginx 配置有问题，但我不明白它是什么。附上 https-redirect-docker-sc.config 中的代码。

我尝试调试代码以查找任何内存泄漏或循环，但找不到任何解决方案。

   files:
   "/etc/nginx/sites-available/elasticbeanstalk-nginx-docker-proxy.conf":
   owner: root
   group: root
   mode: "000755"
   content: |
   map $http_upgrade $connection_upgrade {
          default        "upgrade";
          ""            "";
   }

   server {
       listen 80;
       server_name mydomain.no;

       return 301 https://www.mydomain.no$request_uri;
   }   

   server {
       listen 80 default_server;

       gzip on;
       gzip_comp_level 4;
       gzip_types text/html text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

       if ($time_iso8601 ~ "^(\d{4})-(\d{2})-(\d{2})T(\d{2})") {
           set $year $1;
           set $month $2;
           set $day $3;
           set $hour $4;
       }
       access_log /var/log/nginx/healthd/application.log.$year-$month-$day-$hour healthd;

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

       location / {
           set $redirect 0;
           if ($http_x_forwarded_proto != "https") {
             set $redirect 1;
           }
           if ($http_user_agent ~* "ELB-HealthChecker") {
             set $redirect 0;
           }
           if ($redirect = 1) {
             return 301 https://$host$request_uri;
           }

           proxy_pass            http://docker;
           proxy_http_version    1.1;

           proxy_set_header    Connection            $connection_upgrade;
           proxy_set_header    Upgrade                $http_upgrade;
           proxy_set_header    Host                $host;
           proxy_set_header    X-Real-IP            $remote_addr;
           proxy_set_header    X-Forwarded-For        $proxy_add_x_forwarded_for;
       }
   }

Answer 1

Nginx worker_connections 的默认值是 1024，这对你来说还不够。

在 nginx.conf 中的 http 之前添加事件块，如下所示：

events {
  worker_connections  4096;  ## Default: 1024
}

http {
  include    conf/mime.types;
  .....
}

您还可以增加worker_processes的数量（默认= 1），因此您的服务器可以处理的连接总数将是worker_processes *worker_connections

请在此处查看完整的示例配置