I have a SaaS site. I have "tenants" that set up a CNAME pointing to a subdomain I host.
I have a few questions based on this scenario.
Is it possible to create a certificate for each "tenant" subdomain? Ex. every "tenant" points to custom.mysite.com with whatever subdomain they want from their site; let's say checkout.theirsite.com. When they signup for an account on mysite.com and enter their domain they'll be using I'd like to automate adding a certificate. I see I can extend my certificate (and I was able to manually do this) but I'd like them to have their own.
I know a site called booqable does this and their tenants have the certificate name in their subdomain and the SAN (see screenshot below). When I added their subdomain to my cert it lists all the subdomain names in the SAN and I don't want that.
This site in the screenshot booqable is hosting and the rental company has a CNAME set up pointing to a subdomain they have set up.
I am assuming this is possible so when a user adds what subdomain they're using in a form on their admin panel is there a way to create them their own certificate with the domain they input?