Centralizing Certificate Management of LetsEncrypt with a Raspberry PI

Lets Encrypt is a new Certificate Authority (CA), run for the public’s benefit by the Internet Security Research Group (ISRG). At the time of writing it’s currently in Beta and is due to go public in December 2015.

Update: Lets Encrypt went into public -beta on December 3 2015. I have updated this article with the minor change needed to work with the live servers.

Now in the default mode, the standard Lets Encrypt client (it’s not the only one) can manage this automatically – however it’s not ideal if you have more than one server.

What I describe here is how to centralize managing certificate registration (& later renewal) on a central machine. When a certificate is then registered or renewed we can then copy the certs to the remote servers.

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