I expect to be able to mount NFS share with sec=krb5 as root on client
using machine credentials.
What mount command are you using?
mount.nfs4 -o rw,sec=krb5 jota.nat.c.example.com:/nfs /nfs
or entry in /etc/fstab: (mount on boot, or with 'mountall' as root)
jota.nat.c.sdu.dk:/nfs /nfs nfs rw,sec=krb5 0 0
Is root a domain user who can get a ticket?
no (is machine's root she or he :) ??)
Usually she isn't.
Is the user mentioned on the mount command?
no - no user in options...
best,
Longina