Ubuntu下nginx设置反向代理：

apt-get install nginx

vi /etc/nginx/sites-enabled/default

location / {
          proxy_pass http://10.0.0.2:8081;
          proxy_redirect host   $host:$server_port;
          proxy_set_header Host $host:$server_port;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header X-Forwarded-Proto  $scheme;	
}

:wq

service nginx restart

然后访问http://ip即是访问8081端口对应的服务

改nginx端口：

直接改default文件里的listen 端口即可

listen 8080 default_server;