Join to AD

yum install samba realmd samba-common oddjob oddjob-mkhomedir sssd

realm join --user=administrator sakib.biz

realm list

use_fully_qualified_names = False

fallback_homedir = /home/%u

access_provider = simple

simple_allow_groups = Domain Admins

systemctl restart sssd

systemctl daemon-reload

authconfig --updateall