申请证书

1. 申请阿里云的证书申请地址
2. 注意【保护类型】选择【一个域名】，【选择拼配】选择【Symantec】，才可以选择免费型DV SSL
3. 可以查看签发证书的进程，需要在DNS解析添加一条CName的txt解析。

   配置nginx

 server {
      listen 443;
      server_name localhost;
      root /;
      ssl on;
      index index.html index.htm;
      ssl_certificate   cert/path/server.pem;
      ssl_certificate_key  cert/path/server.key;
      ssl_session_timeout 5m;
      ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;
      ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
      ssl_prefer_server_ciphers on;
}

https only

需要监听80端口，将http过来的请求转到https

 server {
      listen 80;
      server_name www.fengbaiyang.cn;
      rewrite ^(.*)$ https://${server_name}$1 permanent;
}