I&#x27;m the nth author of an ACME (Let&#x27;s Encrypt) client. It&#x27;s a single-binary Go client which you can build and upload to your server. It&#x27;s designed to work like &quot;make&quot;; you tell it what hostnames you want certificates for, and it tries to satisfy those requirements.
It can install a cronjob automatically for autorenewal, and the authorization process doesn&#x27;t require downtime.<p><a href="https:&#x2F;&#x2F;github.com&#x2F;hlandau&#x2F;acme.t" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;hlandau&#x2F;acme.t</a>