Nginx开启HTTPS，HTTP自动重定向至HTTPS

首先申请一份SSL证书，获得证书文件.crt，证书key文件.key。
Nginx配置如下

server {
  listen 80;
  server_name website.com;

  # 重定向至https
  rewrite ^(.*)$ https://$host$1 permanent;
}

server{
  listen 443 ssl;
  server_name walterbright.cc;

  # ssl 证书路径
  ssl_certificate       path/cert.crt;

  # ssl key 路径
  ssl_certificate_key   path/cert.key;

  location / {
    root /site/;
  }
}