|How can I enable sudo privilege for an account on clients ?|
|You had to manually edit the sudoers file on drbl server:|
Append the account in it. Take account "john" as an example:
john ALL=(ALL) ALL
Then run "drblpush -i".
BTW, on Ubuntu Linux, the root account is not really usable (i.e. you can not login on console) until you assign it a password on the server. The default is no password.
Thanks to lophat at users.sourceforge.net for providing this hint.