即使将数量增加一倍，“worker_connections 还不够”

Question

我在应用程序 Nginx 上全新安装了一个 rails 应用程序。一切都很顺利，直到我决定从 Lets Encrypt 放 SSL 证书。当我尝试访问页面时出现404 Not Found错误。

/错误日志

2017/02/07 02:10:46 [alert] 4779#0: *35005 2048 worker_connections are not enough while connecting to upstream

/etc/nginx/nginx.conf

    user  nginx;
worker_processes  2;
worker_rlimit_nofile 30000;

error_log  /var/log/nginx/error.log;
#error_log  /var/log/nginx/error.log  notice;
#error_log  /var/log/nginx/error.log  info;

pid        /run/nginx.pid;


events {
    worker_connections  2048;
}

 server{
        listen  80;
        server_name  example.com www.example.com;
        return 301 https://$host$request_uri;
}

        server{

        listen  443 ssl;
        server_name  example.com www.example.com;
        root         /var/www/myapp/public;

        #SSL Configuration

        ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_prefer_server_ciphers on;
        ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';

        #charset koi8-r;

        #access_log  /var/log/nginx/host.access.log  main;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location / {
                proxy_pass https://example.com;
        }

        # redirect server error pages to the static page /40x.html
        #
        error_page  404              /404.html;
        location = /40x.html {
        }

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
        }
 }
}

我用谷歌搜索并尝试了几次，但没有任何改变。关于我应该如何解决这个问题的任何帮助？

Answer 1

你的问题不是worker_connections。您的问题是您已指定proxy_pass连接回同一个 nginx，server从而创建了一个无限循环。当一个连接进来时，nginx 立即重新连接到自己 2048 次，抛出那个错误，然后放弃。

要解决此问题，您需要找到proxy_pass正确的 Web 应用程序，无论它在哪里，或者将其完全删除。