Hi, I need make backup something for lets Encrypt, to make a install new of server ubuntu ?
I will have to reset my ubuntu server and start over.
Then I was wondering if I need to save something, or just do my installation again
Thanks
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IMO it would be best to backup the entire directory /etc/letsencrypt/ and restore it on the new server, preserving ownership, permissions and symbolic links.
That way no unnecessary certificates would need to be issued and your account would be preserved, which might be important for e.g. rate limit excemptions or the ECDSA allowlist.
Make sure the backup is kept secure and transmitted securely, as it contains the private key(s) of your account(s) as wel as the private key(s) of your certificate(s).
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