Ubuntu 18.04
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Samba : Samba AD DC : サーバーの設定
2018/06/26
 
Samba による Active Directory Domain Controller を構築します。
当例では、以下のようなドメイン環境を設定します。
ドメイン名 : SMB01
レルム : SRV.WORLD
ホスト名 : smb.srv.world
[1] 必要なパッケージをインストールします。
root@smb:~#
apt -y install samba krb5-config winbind smbclient
# レルム名を設定

 +------------------+ Configuring Kerberos Authentication +------------------+
 | When users attempt to use Kerberos and specify a principal or user name   |
 | without specifying what administrative Kerberos realm that principal      |
 | belongs to, the system appends the default realm.  The default realm may  |
 | also be used as the realm of a Kerberos service running on the local      |
 | machine.  Often, the default realm is the uppercase version of the local  |
 | DNS domain.                                                               |
 |                                                                           |
 | Default Kerberos version 5 realm:                                         |
 |                                                                           |
 | SRV.WORLD________________________________________________________________ |
 |                                                                           |
 |                                  <Ok>                                     |
 |                                                                           |
 +---------------------------------------------------------------------------+
# 自身のホスト名を指定

 +------------------+ Configuring Kerberos Authentication +------------------+
 | Enter the hostnames of Kerberos servers in the SRV.WORLD Kerberos         |
 | realm separated by spaces.                                                |
 |                                                                           |
 | Kerberos servers for your realm:                                          |
 |                                                                           |
 | smb.srv.world____________________________________________________________ |
 |                                                                           |
 |                                  <Ok>                                     |
 |                                                                           |
 +---------------------------------------------------------------------------+
 
# 自身のホスト名を指定

 +------------------+ Configuring Kerberos Authentication +------------------+
 | Enter the hostname of the administrative (password changing) server for   |
 | the SRV.WORLD Kerberos realm.                                             |
 |                                                                           |
 | Administrative server for your Kerberos realm:                            |
 |                                                                           |
 | smb.srv.world____________________________________________________________ |
 |                                                                           |
 |                                  <Ok>                                     |
 |                                                                           |
 +---------------------------------------------------------------------------+
[2] Samba の設定です。
# デフォルトの設定ファイルはリネームまたは削除

root@smb:~#
mv /etc/samba/smb.conf /etc/samba/smb.conf.org

root@smb:~#
samba-tool domain provision

# レルム名を指定 (通常はそのままEnterでOK)
Realm [SRV.WORLD]: 
# ドメイン名を指定
 Domain [SRV]: SMB01 
# DC にするのでそのまま Enter
 Server Role (dc, member, standalone) [dc]:
# Samba の内蔵 DNS を使うのでそのまま Enter
 DNS backend (SAMBA_INTERNAL, BIND9_FLATFILE, BIND9_DLZ, NONE) [SAMBA_INTERNAL]:
# DNS フォワーダーを設定する場合は入力, 設定しない場合は [none] を指定
 DNS forwarder IP address (write 'none' to disable forwarding) [127.0.0.53]: 10.0.0.10
# 管理者パスワードを設定
# 単純なパスワードはエラーとなるため、6文字以上且つ英数字と大文字小文字を交えた複雑なパスワードにする
Administrator password:
Retype password:
Looking up IPv4 addresses
Looking up IPv6 addresses
No IPv6 address will be assigned
Setting up share.ldb
Setting up secrets.ldb
Setting up the registry
Setting up the privileges database
Setting up idmap db
Setting up SAM db
Setting up sam.ldb partitions and settings
Setting up sam.ldb rootDSE
Pre-loading the Samba 4 and AD schema
Adding DomainDN: DC=srv,DC=world
Adding configuration container
Setting up sam.ldb schema
Setting up sam.ldb configuration data
Setting up display specifiers
Modifying display specifiers
Adding users container
Modifying users container
Adding computers container
Modifying computers container
Setting up sam.ldb data
Setting up well known security principals
Setting up sam.ldb users and groups
Setting up self join
Adding DNS accounts
Creating CN=MicrosoftDNS,CN=System,DC=srv,DC=world
Creating DomainDnsZones and ForestDnsZones partitions
Populating DomainDnsZones and ForestDnsZones partitions
Setting up sam.ldb rootDSE marking as synchronized
Fixing provision GUIDs
A Kerberos configuration suitable for Samba AD has been generated at /var/lib/samba/private/krb5.conf
Once the above files are installed, your Samba AD server will be ready to use
Server Role:           active directory domain controller
Hostname:              smb
NetBIOS Domain:        SMB01
DNS Domain:            srv.world
DOMAIN SID:            S-1-5-21-4176899714-252447280-935874687

root@smb:~#
cp /var/lib/samba/private/krb5.conf /etc/

root@smb:~#
systemctl stop smbd nmbd winbind systemd-resolved

root@smb:~#
systemctl disable smbd nmbd winbind systemd-resolved

root@smb:~#
systemctl unmask samba-ad-dc

Removed /etc/systemd/system/samba-ad-dc.service.
# resolv.conf のリンクは削除して実体を新規作成

root@smb:~#
ll /etc/resolv.conf

lrwxrwxrwx 1 root root 39 Apr 27 10:30 /etc/resolv.conf -> ../run/systemd/resolve/stub-resolv.conf
root@smb:~#
rm /etc/resolv.conf

root@smb:~#
vi /etc/resolv.conf
# ドメイン名は自身の環境に置き換え

domain srv.world
nameserver 127.0.0.1
root@smb:~#
systemctl start samba-ad-dc

root@smb:~#
systemctl enable samba-ad-dc

[3] ドメインの機能レベルの確認とユーザー登録をしておきます。
# ドメインの機能レベル確認

root@smb:~#
samba-tool domain level show

Domain and forest function level for domain 'DC=srv,DC=world'

Forest function level: (Windows) 2008 R2
Domain function level: (Windows) 2008 R2
Lowest function level of a DC: (Windows) 2008 R2

# ドメインにユーザー登録

root@smb:~#
samba-tool user create ubuntu

New Password:  
# パスワード設定

Retype Password:
User 'ubuntu' created successfully
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