I’m not a server guy. I own a few forum based websites that are hosted on a dedicated, managed server. My server guy was able to install Let’s Encrypt SSL certificates for my forums and they have been running on https:// for a good while now without problem.
My server is old though and my server guy has acquired new hardware to host my forum sites. I want to upgrade the forum software on the new hardware before ditching the old server.
Currently DNS points to my sites on the existing (old) server hardware. New hardware is in the rack and I can access them if I modify my hosts file to point to the new IP addresses.
My issue is that when I try to access the sites on the new hardware/IP, my browser throws up connection errors and I’m 99.9% sure it’s because of some issue with the SSL certification.
How can I privately access, test and modify my sites on the new IP address/hardware while the old sites are still public on the existing hardware/IP/DNS? I tried to access them over http: instead of https:, but the forums have https:// paths coded into the database. I don’t see any easy way to unwind the https:// configurations.
Is it possible to edit/update an SSL certification to list two IP addresses as valid? I hope that question even makes sense. I don’t really know how this works.