前几个月发表了一篇文章《申请免费的 Let's Encrypt 通配符 SSL/TLS 证书》，如今2个多月过去，今天收到了来自 Let's Encrypt 的邮件，提醒我证书该续期了。

原本以为只需要执行 certbot-auto renew 就可以愉快的完成续期，但执行报错了，输出结果如下：

[root@VM_0_10_centos ~]# certbot-auto renew
Saving debug log to /var/log/letsencrypt/letsencrypt.log

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Processing /etc/letsencrypt/renewal/yangdx.com.conf
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Cert is due for renewal, auto-renewing...
Could not choose appropriate plugin: The manual plugin is not working; there may be problems with your existing configuration.
The error was: PluginError('An authentication script must be provided with --manual-auth-hook when using the manual plugin non-interactively.',)
Attempting to renew cert (yangdx.com) from /etc/letsencrypt/renewal/yangdx.com.conf produced an unexpected error: The manual plugin is not working; there may be problems with your existing configuration.
The error was: PluginError('An authentication script must be provided with --manual-auth-hook when using the manual plugin non-interactively.',). Skipping.
All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/yangdx.com/fullchain.pem (failure)

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All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/yangdx.com/fullchain.pem (failure)
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1 renew failure(s), 0 parse failure(s)

重点这句：An authentication script must be provided with --manual-auth-hook when using the manual plugin non-interactively.

原来，通配符域名证书不能简单的通过执行 certbot-auto renew 来完成续期，必须通过 --manual-auth-hook 参数提供一个身份验证脚本来自动完成 DNS TXT 记录的验证操作。

在 GitHub 上找到一个别人写好的插件：https://github.com/ywdblog/certbot-letencrypt-wildcardcertificates-alydns-au

该插件目前支持阿里云 DNS、腾讯云 DNS、华为云 NDS、GoDaddy（certbot 官方没有对应的插件）。

请访问上面链接获取帮助说明，此文不再阐述。

 

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