upgrades

I have setup a lets-encrypt certificate, however if I access the server using the domain name I cannot access shell or run upgrades, it works fine with my PVE server? I can access both if I use the ip address is this normal?

Hi Folks, I'm in need of a hypervisor cluster. I've been thinking about using proxmox and ceph for it instead of vmware. I like opensource tech etc. I was thinking of upgrading when new versions of proxmox and ceph come out. The logical way I think would be move the VMs to the two other nodes...

I'm assuming that if proxmox-ve package installs a kernel module (does it?) then the host needs rebooting if I install an update to that package. Is that right?