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# Adding a Samba-AD in a Microsoft Active Directory domain

This documentation can be used to migrate an existing MS-AD domain to a Samba-AD domain.

Hint

Samba 4.20 and later supports MSAD 2016 schema with a 2016 forest level. The 2016 level includes silos, claims and FAST kerberos.

- Show the current forest level;

      Get-ADDomain | fl Name,DomainMode
      Get-ADForest | fl Name,ForestMode

- Then prepare the Samba virtual machine according to the following recommendations, then instantiate the domain controller as a secondary domain controller;

- After joining, check that the DNS entries of the new domain controller have been created;

      samba_dnsupdate --verbose

- Add the address of the Samba-AD controller to the network card of the Windows machine as a secondary DNS server;

- Check that the replications are running correctly on the Samba side with the following command line:

      samba-tool drs showrepl

- Check that the replications are running correctly on the Windows side with the following command line:

      repadmin /showrepl