Join in Active Directory Domain2023/06/15 |
Join in Windows Active Directory Domain with Realmd.
This tutorial needs Windows Active Directory Domain Service in your LAN.
This example shows to configure on the environment below.
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[1] | Install some required packages. |
root@dlp:~# apt -y install realmd sssd sssd-tools libnss-sss libpam-sss adcli samba-common-bin oddjob oddjob-mkhomedir packagekit
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[2] | Join in Windows Active Directory Domain. |
domain srv.world search srv.world nameserver 10.0.0.100 # * if you are using resolvconf or Networkmanager programs, # change nameserver setting on a file for their requirements # discover Active Directory domain root@dlp:~# realm discover SRV.WORLD srv.world type: kerberos realm-name: SRV.WORLD domain-name: srv.world configured: no server-software: active-directory client-software: sssd required-package: sssd-tools required-package: sssd required-package: libnss-sss required-package: libpam-sss required-package: adcli required-package: samba-common-bin # join in Active Directory domain root@dlp:~# realm join SRV.WORLD Password for Administrator: # AD Administrator password
# verify it's possible to get an AD user info or not root@dlp:~# id Serverworld@srv.world uid=1065401103(serverworld@srv.world) gid=1065400513(domain users@srv.world) groups=1065400513(domain users@srv.world),1065401153(esx admins@srv.world),1065400512(domain admins@srv.world),1065400572(denied rodc password replication group@srv.world) # add to the end : create Home Dir automatically when initial login session optional pam_mkhomedir.so skel=/etc/skel umask=077 # verify it's possible to login as an AD user or not root@dlp:~# exit
logout Debian GNU/Linux 12 dlp.srv.world ttyS0 dlp login: serverworld@srv.world Password: Linux dlp.srv.world 6.1.0-9-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.27-1 (2023-05-08) x86_64 The programs included with the Debian GNU/Linux system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. Creating directory '/home/serverworld@srv.world'. serverworld@srv.world@dlp:~$ # logined |
[3] | If you'd like to omit domain name for AD user, configure like follows. |
root@dlp:~#
vi /etc/sssd/sssd.conf # line 16 : change use_fully_qualified_names = False
root@dlp:~#
root@dlp:~# systemctl restart sssd id Administrator uid=1065400500(administrator) gid=1065400513(domain users) groups=1065400513(domain users),1065401153(esx admins),1065400572(denied rodc password replication group),1065400512(domain admins),1065400518(schema admins),1065400520(group policy creator owners),1065400519(enterprise admins) |
[4] |
AD users UID/GID are assigned randomly, but if you'd like to assign fixed UID/GID, configure like follows.
Add UNIX attributes to AD accounts first, refer to here.
Next, change SSSD settings on Debian Server.
This example is based on the environment AD accounts have [uidNumber/gidNumber] attributes. |
root@dlp:~#
vi /etc/sssd/sssd.conf # line 17 : change ldap_id_mapping = False
# add to the end ldap_user_uid_number = uidNumber ldap_user_gid_number = gidNumber # clear cache and restart sssd root@dlp:~# rm -f /var/lib/sss/db/* root@dlp:~# systemctl restart sssd
id serverworld uid=5000(serverworld) gid=100(users) groups=100(users) |
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