在ubuntu16.04上安装nginx

gistfile1.txt

# ubuntu16.04 nginx安装
wget http://nginx.org/keys/nginx_signing.key
sudo apt-key add nginx_signing.key
deb http://nginx.org/packages/ubuntu/ xenial nginx
deb-src http://nginx.org/packages/ubuntu/ xenial nginx
sudo apt-get update 
sudo apt-get install nginx
vhost 实现多域名映射
upstream 实现反向代理

在/etc/nginx/conf.d依次为每一个域名加入配置文件
例子:
demo.conf
upstream demo {
 server 127.0.0.1:3000;
}
server {
    listen       80;
    server_name  demo.com;

    #charset koi8-r;
    access_log  /var/log/nginx/demo.access.log  main;
    error_log  /var/log/nginx/demo.error.log  info;

    location / {
     proxy_pass http://demo;
   }

}