域名在AWS如何申请七牛云免费证书
登陆七牛云SSL证书服务控制台
https://portal.qiniu.com/certificate/apply
具体操作请看下面连接
https://developer.qiniu.com/ssl/manual/3666/ssl-certificate-of-purchase-process
https://developer.qiniu.com/ssl/manual/3667/ssl-certificate-of-free-dns-validation-guide
建议使用DNS验证
在AWS Route53控制台配置下面信息