acme.sh 实现了 acme 协议, 可以从 letsencrypt 生成免费的证书。
Automated ACME SSL certificate generation for nginx-proxy
Get publicly trusted certificate via ACME protocol from LetsEncrypt or from BuyPass
This repo automates nginx and php-fpm provsion using ansible acme module that provide free ssl either from Letsencrypt or Buypass SSL
The All-in-One SSL Toolkit