The difference between a third world country and Mexico

Thanks for your answer.

I use proxmox since version 2.1 in my home lab and since 2020 in production at work. We did not have issues with the ssh files yet. Also corosync is working fine although it shares its 10g network with ceph.

In all that time I was not aware of how the certs are handled, despite the fact I had two official proxmox trainings. Ouch.

Please elaborate. How does it handle ssh keys? And what is fragile regarding corosync?