I already Setup Samba Domain Controller with LDAP Backend in Ubuntu 12.04 / 13:04
See more at: http://www.unixmen.com/setup-samba-domain-controller-with-openldap-backend-in-ubuntu-13-04/#sthash.P6UnTNp7.dpuf
In that tutorial shows how to join a windows client to samba domain and it works but how we can join the ubuntu client to samba domain like windows did?
From login system using the user accounts that created from the domain server?