Using SSO on public Setup with two Servers

hello everyone

I’m currently looking into SSO and somehow I cannot find a documented solution to have let’s encrypt SSL-cert while using two UCS Systems (1* Primary & 1* Replica)

I’m using UCS 5.0 on both systems & my public DNS is Cloudflare. maybe this allows me to get a wildcard on both systems, without relying on the other system?

currently I’m using the let’s encrypt app, which doesn’t seem to be able to do this accoring to other posts.