That does not make any difference unfortunalty....
@fresh installed proxmox 5.0
when using:
https://pve.proxmox.com/wiki/Ceph_Server
cat /etc/*release
PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
NAME="Debian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"
ID=debian
[..]
pveversion -v...