Linux Active Directory Domain Join with ansible

This is an ansible role that join Linux machine to Active directory domain using realm, sssd and samba-winbind.

This role is tested only on Ubuntu 20.04

Features

• Support both sssd and winbind via realm
• Can restrict login policy
• Add sudoers

Requirements

Host

• ansible > 2.1

Target

• Ubuntu 20.04

  • Internet connection (currently under proxy environment does not supported)

• RHEL/Centos 7

  • Internet connection (currently under proxy environment does not supported)
  • NOTE: Centos 7 only tested with SSSD. if you want to use join with winbind, it may not work as expected

Role Variables

defaults/main.yml

• basic domain information

  variable	description
  join_method	join domain method (default: sssd, possible value: sssd or winbind)
  domain_name	Active directory domain name
  domain_netbios_name	Active directory NetBIOS name (winbind only)
  domain_admin_user	User that can join to domain (default: Administrator)
  domain_admin_password	Domain admin password

• misc

  variable	description
  domain_sudoers	list of group name that want to give sudo permission. if you don't want to give sudo permission, than leave as blank (default: administrators, domain admins, enterprise admins)
  user_home_creation	if enabled, home directory created when new user login (default: yes)
  set_default_domain	if enabled, set domain as system default (default: yes)

• sssd configuration

  • login policy

    the below configuration is stands for restrict login policy when using sssd. if you don't want to restrict login policy, than set sssd_permit_deny_allto no and leave blank others

    variable	description
    sssd_permit_deny_all	disable login for all users and groups. this should be yes if want to restrict login with below allow list (default: yes)
    sssd_permit_allow_groups	allow login specific groups (default: administrators, domain admins, enterprise admins)
    sssd_permit_allow_users	give permission to login in specific user (default: blank)
    sssd_permit_block_groups	block login specific groups (default: blank)
    sssd_permit_block_users	block login specific users (default: blank)

  • dynamic dns update

    variable	description
    sssd_dyndns_update	enable/disable dyndns option (default: yes)
    sssd_dyndns_refresh_interval	dyndns_refresh_inverval (default: 43200)
    sssd_dyndns_update_ptr	dyndns_update_ptr (default: true)
    sssd_dyndns_ttl	dyndns_ttl (default: 3600)

• winbind configuration

  • idmap

    note that current implementation on winbind idmap is tdb only. no other methods are supported.

    variable	description
    winbind_idmap_default_range	idmap range (default: 10000-999999)
    winbind_idmap_current_domain_range	default domain id map range (default: 2000000-2999999)

  • login policy

    if you don't want to restrict login policy, than leave as blank

    variable	description
    winbind_permit_allow_sids	sids that allow login (default: BUILTIN\administrator)
    winbind_permit_allow_names	group name that allow login (default: domain admins, enterprise admins)

vars/main.yml

variable	description
sudoers_path	sudoers config directory location (default: /etc/sudoers.d)
sssd_config_path	sssd config location (default: /etc/sssd/sssd.config)
samba_config_path	samba config location (default: /etc/samba/smb.conf)
template_sudoers_sssd	sudoers template for sssd (default: sudoers.sssd.j2)
template_sudoers_winbind	sudoers template for winbind (default: sudoers.winbind.j2)

Dependencies

• community.general

Example Playbook

• minimum setup (sssd)

  The minimum setup for sssd. after join domain, you can login with following groups

  • administrator
  • domain admins
  • enterprise admins

      - hosts: servers
        roles:
          - lazyrichard.linux_join_ad_domain
        vars:
          join_method: sssd
          domain_name: contoso.com
          domain_admin_user: domain_admin
          domain_admin_password: really-strong-password

• minimum setup (winbind)

  The minimum setup for winbind. after join domain, you can login with following groups

  • administrator
  • domain admins
  • enterprise admins

      - hosts: servers
        roles:
          - lazyrichard.linux_join_ad_domain
        vars:
          join_method: winbind
          domain_name: contoso.com
          domain_netbios_name: CONTOSO
          domain_admin_user: domain_admin
          domain_admin_password: really-strong-password

License

BSD