realm discover
realm join --user=admin domain.example.com
realm leave
realm list
realm permit --all
realm permit user@example.com
realm permit DOMAIN\\User2
realm permit --withdraw user@example.com
realm deny --all
/proc/sys/kernel/hostname
service pve-cluster stop pmxcfs -l rm /etc/pve/corosync.conf rm /etc/corosync/corosync.conf rm /etc/corosync/authkey