According to https://docs.digitalocean.com/products/kubernetes/how-to/configure-load-balancers/#ssl-certificates you can specify whether to disable automatic DNS record creation for the certificate upon the load balancer’s creation using the do-loadbalancer-disable-lets-encrypt-dns-records annotation. If you specify true, we will not automatically create a DNS A record at the apex of your domain to support the SSL certificate.
Zed Server
This crate is what we run at https://collab.zed.dev.
It contains our back-end logic for collaboration, to which we connect from the Zed client via a websocket after authenticating via https://zed.dev, which is a separate repo running on Vercel.