I run a website which I serve over https and https only (
add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload";)
The ssl certificate I bought came from namecheap.com, but it's supplied by Comodo. It's a "Essential SSL Wildcard" certificate.
Can I just move the certificate files from their location in
/etc/nginx/ssl/ on my old server and expect them to work flawlessly on the new server?
Or do I have to do something clever, if so, what? Is it just the same procedure I went through to install it onto the old server when I first got the certificate? Is it ok to have it running on both servers simultaneously during the switchover?
I really hope I won't have to buy a new certificate as I paid for 3 years up-front only a few months ago...