Samba Installation · 7 min read · Dec 09, 2025

Installazione del Controller di Dominio Samba 4 su CentOS 7

A partire dalla versione 4.0, Samba è in grado di funzionare come un controller di dominio (DC) Active Directory (AD). In questo tutorial, ti mostrerò come configurare Samba 4 come controller di dominio con Windows 10, CentOS 7 e client CentOS 6.

In questo tutorial, compilerò Samba 4 dal sorgente. Se stai cercando un’installazione basata su RPM di Samba 4 e configurazione SELinux per Samba 4, ti prego di vedere il mio nuovo tutorial su Samba 4 qui.

Utilizzerò 3 sistemi, un server CentOS 7 e un client Windows 10 per la gestione remota, un client CentOS 7 e un client CentOS 6.

  • 192.168.1.190 Samba4 AD centos7
  • 192.168.1.191 gestione remota win 10
  • 192.168.1.22 - client Autenticazione - centos 7
  • 192.168.1.192 - client Autenticazione - centos 6

Installazione di Samba 4

192.168.1.190 Samba4 AD centos 7

La base è un CentOS 7 con installazione minima e SELinux disabilitato.

      
[root@samba4 ~]# sestatus
SELinux status: disabled
[root@samba4 ~]#

Fai un’entrata nel file /etc/hosts.

[root@samba4 ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.1.190   samba4.sunil.cc samba4
[root@samba4 ~]#

Installa il repository epel.

[root@samba4 ~]# yum install epel-release -y

Installa tutti i pacchetti necessari per compilare samba4.

[root@samba4 ~]# yum install perl gcc libacl-devel libblkid-devel gnutls-devel readline-devel python-devel gdb pkgconfig krb5-workstation zlib-devel setroubleshoot-server libaio-devel setroubleshoot-plugins\
policycoreutils-python libsemanage-python setools-libs-python setools-libs popt-devel libpcap-devel sqlite-devel libidn-devel libxml2-devel libacl-devel libsepol-devel libattr-devel keyutils-libs-devel\
cyrus-sasl-devel cups-devel bind-utils libxslt docbook-style-xsl openldap-devel pam-devel bzip2 vim wget -y

Ora scarica il pacchetto samba4. Uso samba-4.6.0 che è l’ultima versione durante questa configurazione.

[root@samba4 ~]#  wget https://download.samba.org/pub/samba/stable/samba-4.6.0.tar.gz

Ora installiamo samba4.

  [root@samba4 ~]# tar -zxvf samba-4.6.0.tar.gz
  [root@samba4 ~]# cd samba-4.6.0
  [root@samba4 samba-4.6.0]# ./configure --enable-debug --enable-selftest --with-ads --with-systemd --with-winbind
  [root@samba4 samba-4.6.0]# make && make install

L’installazione richiederà circa 10 minuti a seconda della velocità del sistema.

Ora procederemo con la fornitura del dominio.

[root@samba4 samba]# samba-tool domain provision --use-rfc2307 --interactive
Realm [SUNIL.CC]:
 Domain [SUNIL]:
 Server Role (dc, member, standalone) [dc]: dc
 DNS backend (SAMBA_INTERNAL, BIND9_FLATFILE, BIND9_DLZ, NONE) [SAMBA_INTERNAL]:
 DNS forwarder IP address (write 'none' to disable forwarding) [4.2.2.1]:
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=sunil,DC=cc
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
ERROR(ldb): uncaught exception - operations error at ../source4/dsdb/samdb/ldb_modules/password_hash.c:2820
  File "/usr/local/samba/lib64/python2.7/site-packages/samba/netcmd/__init__.py", line 176, in _run
    return self.run(*args, **kwargs)
  File "/usr/local/samba/lib64/python2.7/site-packages/samba/netcmd/domain.py", line 471, in run
    nosync=ldap_backend_nosync, ldap_dryrun_mode=ldap_dryrun_mode)
  File "/usr/local/samba/lib64/python2.7/site-packages/samba/provision/__init__.py", line 2175, in provision
    skip_sysvolacl=skip_sysvolacl)
  File "/usr/local/samba/lib64/python2.7/site-packages/samba/provision/__init__.py", line 1787, in provision_fill
    next_rid=next_rid, dc_rid=dc_rid)
  File "/usr/local/samba/lib64/python2.7/site-packages/samba/provision/__init__.py", line 1447, in fill_samdb
    "KRBTGTPASS_B64": b64encode(krbtgtpass.encode('utf-16-le'))
  File "/usr/local/samba/lib64/python2.7/site-packages/samba/provision/common.py", line 55, in setup_add_ldif
    ldb.add_ldif(data, controls)
  File "/usr/local/samba/lib64/python2.7/site-packages/samba/__init__.py", line 225, in add_ldif
    self.add(msg, controls)

[root@samba4 samba]#

Ci saranno alcuni errori quando faremo la fornitura del dominio.

Per risolverli, ti prego di commentare la seguente riga in /etc/krb5.conf.

  --------
  #includedir /etc/krb5.conf.d/
  --------

Esegui di nuovo la fornitura del dominio e ora il dominio verrà creato senza errori.

  [root@samba4 etc]# samba-tool domain provision --use-rfc2307 --interactive
Realm [SUNIL.CC]:
 Domain [SUNIL]:
 Server Role (dc, member, standalone) [dc]:
 DNS backend (SAMBA_INTERNAL, BIND9_FLATFILE, BIND9_DLZ, NONE) [SAMBA_INTERNAL]:
 DNS forwarder IP address (write 'none' to disable forwarding) [4.2.2.1]:
Administrator password:
Retype password:
Looking up IPv4 addresses
Looking up IPv6 addresses
No IPv6 address will be assigned
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=sunil,DC=cc
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=sunil,DC=cc
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 /usr/local/samba/private/krb5.conf
Setting up fake yp server settings
Once the above files are installed, your Samba4 server will be ready to use
Server Role:           active directory domain controller
Hostname:              samba4
NetBIOS Domain:        SUNIL
DNS Domain:            sunil.cc
DOMAIN SID:            S-1-5-21-2936486394-2075362935-551615353

[root@samba4 etc]#

Assicurati che le porte siano aperte nel firewall.

[root@samba4 etc]#firewall-cmd --add-port=53/tcp --permanent;firewall-cmd --add-port=53/udp --permanent;firewall-cmd --add-port=88/tcp --permanent;firewall-cmd --add-port=88/udp --permanent; 
firewall-cmd --add-port=135/tcp --permanent;firewall-cmd --add-port=137-138/udp --permanent;firewall-cmd --add-port=139/tcp --permanent; 
firewall-cmd --add-port=389/tcp --permanent;firewall-cmd --add-port=389/udp --permanent;firewall-cmd --add-port=445/tcp --permanent; 
firewall-cmd --add-port=464/tcp --permanent;firewall-cmd --add-port=464/udp --permanent;firewall-cmd --add-port=636/tcp --permanent; 
firewall-cmd --add-port=1024-5000/tcp --permanent;firewall-cmd --add-port=3268-3269/tcp --permanent
[root@samba4 ~]# firewall-cmd --reload

Crea uno script di avvio per avviare automaticamente il servizio durante il riavvio.

[root@samba4 ~]# cat /etc/systemd/system/samba.service
[Unit]
Description= Samba 4 Active Directory
After=syslog.target
After=network.target

[Service]
Type=forking
PIDFile=/usr/local/samba/var/run/samba.pid
ExecStart=/usr/local/samba/sbin/samba

[Install]
WantedBy=multi-user.target
[root@samba4 ~]#

[root@samba4 ~]# systemctl enable samba
Created symlink from /etc/systemd/system/multi-user.target.wants/samba.service to /etc/systemd/system/samba.service.
[root@samba4 ~]# systemctl start samba

Aggiunta dell’host Windows al dominio

192.168.1.191 gestione remota win 10

Assicurati che l’host sia aggiunto con un indirizzo IP statico.

Host Windows con IP statico

Aggiunta dell’host al dominio.

Per gestire Samba4 da Windows, dobbiamo avere installati gli Strumenti per Server Remoto Microsoft (RSAT).

La pagina wiki ha i link https://wiki.samba.org/index.php/Installing_RSAT

Installazione dello strumento RSAT in Windows 10

Esegui l’installer.

Dopo il riavvio vai su esegui e digita dsa.msc

Clicca sul dominio sunil.cc e fai clic destro su nuovo -> Utenti.

Creazione di un utente di prova.

Autenticazione del client con Samba 4 su CentOS 7

192.168.1.22 - client Autenticazione su CentOS 7

Installazione dei pacchetti:

[root@centos7 ~]# yum -y install realmd sssd oddjob oddjob-mkhomedir adcli samba-common

Controlla la connettività con samba4:

   [root@centos7 ~]# realm discover SUNIL.CC
sunil.cc
  type: kerberos
  realm-name: SUNIL.CC
  domain-name: sunil.cc
  configured: kerberos-member
  server-software: active-directory
  client-software: sssd
  required-package: oddjob
  required-package: oddjob-mkhomedir
  required-package: sssd
  required-package: adcli
  required-package: samba-common-tools
  login-formats: %U
  login-policy: allow-realm-logins
[root@centos7 ~]#

Unisciti al dominio.

[root@centos7 ~]#  realm join SUNIL.CC
Password for Administrator:
[root@centos7 ~]#

Controlla se siamo in grado di ottenere l’utente da samba4.

[root@centos7 ~]# id SUNIL\testuser
uid=1570001104([email protected]) gid=1570000513(domain [email protected]) groups=1570000513(domain [email protected])
[root@centos7 ~]#

Configura sssd.

[root@centos7 ~]# cat /etc/sssd/sssd.conf

[sssd]
domains = sunil.cc
config_file_version = 2
services = nss, pam

[domain/sunil.cc]
ad_domain = sunil.cc
krb5_realm = SUNIL.CC
realmd_tags = manages-system joined-with-samba
cache_credentials = True
id_provider = ad
krb5_store_password_if_offline = True
default_shell = /bin/bash
ldap_id_mapping = True
use_fully_qualified_names = True
fallback_homedir = /home/%u@%d
access_provider = ad
[root@centos7 ~]#

Riavvia sssd.

[root@centos7 ~]# systemctl restart sssd
[root@centos7 ~]# systemctl enable sssd

Controlla l’utente.

[root@centos7 ~]# id [email protected]
uid=1570001105([email protected]) gid=1570000513(domain [email protected]) groups=1570000513(domain [email protected]),1570000512(domain [email protected]),1570000572(denied rodc password replication [email protected])
[root@centos7 ~]#

Per ottenere l’utente senza nome di dominio.

[root@centos7 ~]# vim /etc/sssd/sssd.conf
-----------
------------
use_fully_qualified_names = False
-----------
-----------

Riavvia sssd e controlla il comando id.

[root@centos7 ~]# systemctl restart sssd
[root@centos7 ~]# id sambauser
uid=1570001105(sambauser) gid=1570000513(domain users) groups=1570000513(domain users),1570000512(domain admins),1570000572(denied rodc password replication group)
[root@centos7 ~]#

Autenticazione del client con Samba 4 su CentOS 6

192.168.1.192 - client Autenticazione su CentOS 6.

Installazione dei pacchetti.

   [root@centos6 db]#  yum install pam pam_ldap pam_krb5 sssd sssd-ldap sssd-common authconfig oddjob oddjob-mkhomedir openldap openldap-clients krb5-workstation adcli -y

Cambia il file di configurazione kerberos.

   [root@centos6 db]# cat /etc/krb5.conf
[logging]
 default = FILE:/var/log/krb5libs.log
 kdc = FILE:/var/log/krb5kdc.log
 admin_server = FILE:/var/log/kadmind.log

[libdefaults]
 default_realm = SUNIL.CC
 dns_lookup_realm = false
 dns_lookup_kdc = false
 ticket_lifetime = 24h
 renew_lifetime = 7d
 forwardable = true

[realms]
 SUNIL.CC = {
  kdc = samba4.sunil.cc
  admin_server = samba4.sunil.cc
 }

[domain_realm]
 .sunil.cc = SUNIL.CC
 sunil.cc = SUNIL.CC
[root@centos6 db]#

Utilizzeremo il comando adcli per unirci al dominio.

   [root@centos6 db]# adcli info sunil.cc
[domain]
domain-name = sunil.cc
domain-short = SUNIL
domain-forest = sunil.cc
domain-controller = samba4.sunil.cc
domain-controller-site = Default-First-Site-Name
domain-controller-flags = pdc gc ldap ds kdc timeserv closest writable good-timeserv full-secret
domain-controller-usable = yes
domain-controllers = samba4.sunil.cc
[computer]
computer-site = Default-First-Site-Name
[root@centos6 db]#
[root@centos6 db]# adcli join sunil.cc
Password for [email protected]:
[root@centos6 db]#

Assicurati che il ticket kerberos sia creato.

   [root@centos6 db]# klist -ke

Configura l’autenticazione.

   [root@centos6 db]# authconfig --enablesssd --enablesssdauth --enablemkhomedir --update

Modifica ora la configurazione sssd per effettuare l’autenticazione.

   [root@centos6 db]# cat /etc/sssd/sssd.conf
[sssd]
services = nss, pam, ssh, autofs
config_file_version = 2
domains = sunil.cc

[domain/sunil.cc]
id_provider = ad
# Uncomment if service discovery is not working
# ad_server = server.win.example.com
default_shell = /bin/bash
fallback_homedir = /home/%u
[root@centos6 db]#

Riavvia il servizio sssd.

   [root@centos6 db]# chkconfig sssd on
[root@centos6 db]# service sssd restart
Stopping sssd:                                             [  OK  ]
Starting sssd:                                             [  OK  ]
[root@centos6 db]#

Validazione dell’utente.

   [root@centos6 db]# id sambauser
uid=1570001105(sambauser) gid=1570000513(domain users) groups=1570000513(domain users),1570000512(domain admins),1570000572(denied rodc password replication group)
[root@centos6 db]#
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