nginx 导致 504 错误,但我的应用程序仍在运行

nginx 导致 504 错误,但我的应用程序仍在运行

所以,我们使用 Node.js 来支持 CompassionPit.com,并且全部由 nginx 提供服务。

nginx 抛出 504 网关超时

然而有趣的是,如果我导航到http://compassionpit.com/index.html然后我就可以访问该页面(我相信请求是通过在端口 8000 上运行的 Node 应用程序路由的)。

http://compassionpit.com/blog/工作中。

http://compassionpit.com/已关闭。:(

帮助?

root@li70-243:~# cat /etc/nginx/sites-enabled/blog
server {
    listen       80 default;                # your server's public IP address
    server_name  compassionpit.com;
    index        index.html;

    location /blog/wp-content/ {
        alias /opt/blog/wp-content/;
    }

    location /blog/ {
        root /opt/;

        include        fastcgi_params;
        fastcgi_pass   localhost:8080;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
    }

    location / {
        alias /opt/chat/static/;

        if (-f $request_filename) {
            break;
        }
        if (!-f $request_filename) {
            proxy_pass  http://127.0.0.1:8000;
        }
    }

}

root@li70-243:~# cat /etc/nginx/nginx.conf 
user www-data;
worker_processes  1;

error_log  /var/log/nginx/error.log;
pid        /var/run/nginx.pid;

events {
    worker_connections  1024;
    # multi_accept on;
}

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

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

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;
    tcp_nodelay        on;

    gzip  on;
    gzip_disable "MSIE [1-6]\.(?!.*SV1)";

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

root@li70-243:~# free
             total       used       free     shared    buffers     cached
Mem:        509868     394168     115700          0      43540     215296
-/+ buffers/cache:     135332     374536
Swap:       524284          0     524284

答案1

尝试这个而不是你的location /

location / {
    alias /opt/chat/static/;
    try_files $uri @nodejs;
}

location @nodejs {
    proxy_pass  http://127.0.0.1:8000;
}

并经常检查error.log,它是你最好的朋友。

答案2

我还发现 Linux 上的 csf 禁止许多连接的节点可执行文件。解决此问题的方法是将节点 pid 添加到csf.pignore,如下所示(我还包含了 PM2 路径):

... exe:/usr/local/bin/node exe:/root/npm/lib/node_modules/pm2/bin/pm2

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