nginx.conf

worker_processes  1;
error_log /var/log/error.log error;
user root;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    gzip  on;
    resolver 114.114.114.114;
    real_ip_header     X-Forwarded-For;
    real_ip_recursive on;
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '

                               '$status $body_bytes_sent "$http_referer" '

                               '"$http_user_agent" "$http_x_forwarded_for"';
    access_log  /var/log/access.log  main;
    server {
        listen       80;
        server_name  localhost;
        charset utf-8;
        default_type text/html;
        location / {
           index index.html index.html;   
        }
        location /ip {
            default_type text/html;
            content_by_lua_block{
                ngx.say(ngx.var.remote_addr)
            }
        }
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}