- https://github.com/letsencrypt/letsencrypt
- https://lyncd.com/2015/12/letsencrypt-dreamhost-howto/
- https://letsencrypt.org/getting-started/
- https://letsencrypt.readthedocs.org/en/latest/using.html
$ git clone https://github.com/letsencrypt/letsencrypt.git $ cd letsencrypt $ ./letsencrypt-auto --help $ ./letsencrypt-auto certonly --manual --manual-public-ip-logging-ok -d example.org # manual verification step goes here $ cp -p /etc/letsencrypt/live/example.org/privkey.pem ssl.key $ cp -p /etc/letsencrypt/live/example.org/fullchain.pem ssl.crt
$ tar -cavf letsencrypt.tar.xz \
/etc/letsencrypt /var/lib/letsencrypt /var/log/letsencrypt