Letsencrypt How can I transfer from one server to another a Let’s Encrypt certificate?

Yeah if you copy them from /usr/local/nginx/conf/ssl/yourdomain.com directory along with nginx vhost files (/usr/local/nginx/conf/conf.d/yourdomain.com.conf and /usr/local/nginx/conf/conf.d/yourdomain.com.ssl.conf), they will work. One thing is with letsencrypt they need auto renewal as they have 90 day expiry, so you need to setup addons/acmetool.sh via acmeinstall command on new server

Code (Text):

./acmetool.sh acmeinstall

and then copy over the /root/.acme.sh/yourdomain.com directory too which contains the details acme.sh client needs for auto renew cronjobs.

 

that shouldn't exist it's created on demand during acmetool.sh's call to acme.sh client during domain validation so nothing to copy over