Nethserver with PDC + BDC + LDAP

**NethServer Version: 7.3.1611

I am new to nethserver and still searching a way to buld 2 nethservers: 1 for PDC + LDAP master (primary) and the other 1 for BDC + LDAP slave (secondary) as below link guided. However, it seems like nethserver supporting only PDC OR (not and) LDAP and building another nethserver doesn’t talk to each other.
The reason of using nethserver is for ease of implementation and maintenance.

Please share with me how to achieve my plan.

https://www.samba.org/samba/docs/man/Samba-HOWTO-Collection/samba-bdc.html
Possible PDC/BDC plus LDAP configurations include:
PDC+BDC -> One Central LDAP Server.
PDC -> LDAP master server, BDC -> LDAP slave server.
PDC -> LDAP master, with secondary slave LDAP server.
BDC -> LDAP master, with secondary slave LDAP server.
PDC -> LDAP master, with secondary slave LDAP server.
BDC -> LDAP slave server, with secondary master LDAP serve

I think you are mixing a few things. Article you link to is about Samba3. The Samba Account provider for NethServer 7 is Samba4. This mimics an Active Directory account provider. In Active Directory there is no such thing as a PDC or BDC. All servers running Samba4 are Domain Controllers.

Maybe the following wiki page may be of use: https://wiki.nethserver.org/doku.php?id=howto:add_ns7_samba_domain_controller_to_existing_active_directory

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