今天把证书换到Let’s Encrypt了，Super Easy.
git clone https://github.com/letsencrypt/letsencrypt./letsencrypt-auto certonly -d domain.tld，然后提醒写一个常用email就好了- 配置一下Nginx，
下面是Nginx配置中的证书部分
ssl_certificate /etc/letsencrypt/live/domain.tld/fullchain.pem; ssl_certificate_key /etc/letsencrypt/live/domain.tld/privkey.pem;