我正在努力解决以下问题。我在安装了 ubuntu 16.04 服务器的 digitalocean.com 服务中有一个 droplet。在这台服务器上,我安装了 Nginx HTTP 服务器。对于此服务器,我想连接 Google Domains 购买的域,这需要与服务器建立 SSL 连接。为了获得证书,我开始了本教程:https : //www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-16-04 我安装了 python-certbot -nginx 并开始配置 Nginx。当域认证开始时,会出现与 Google DNS 相关的错误:
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for placeholder.app
http-01 challenge for www.placeholder.app
Waiting for verification ...
Cleaning up challenges
Failed authorization procedure. www.placeholder.app (http-01): urn: ietf: params: acme: error: dns ::
DNS problem: NXDOMAIN looking up A for www.placeholder.app
IMPORTANT NOTES:
- The following errors were reported by the server:
Domain: www.placeholder.app
Type: None
Detail: DNS problem: NXDOMAIN looking up A for
www.placeholder.app
这个问题有什么简单的解决方案吗?