I originally posted this in security since it's a question about SSL certs, but I was told since it's for a voice product I might find better help here.
Hello, I'm needing to install either a renewed GoDaddy cert, or my boss suggested the wildcard cert, onto a Cisco Expressway-E server, but all the instructions I found talk about creating a CRS key and then getting the cert with the new CRS key. I found a video where some guy just installed the renewed cert like it wasn't even a thing, just uploaded the single file and that was that.
I'm confused now. I'm not a security tech, and I don't want to break it if I do it wrong. Can I just upload the new GoDaddy cert? If I install the wildcard cert instead what all do I need?
There are only two options, but without knowing exactly what you plan to use that certificate for, my best recommendation is to engage a reputable consultant or a Cisco partner WITH voice specializations to discuss exactly what that exp-e is used for, and what would be required in the certificate for everything to work properly.
If you still want to go ahead, the two options are:
A) Generate a CSR on the server, have it signed, then upload the signed certificate which will match the private key that is in the server.
B) Generate the private key and the CSR or certificate with any other option you want to use, and then upload the signed certificate and the matching private key.