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14.3.3.2. Primary Domain Controller (PDC) using LDAP
The most powerful and versatile implementation of a Samba PDC is its ability to have an LDAP password backend. LDAP is highly scalable. LDAP database servers can be used for redundancy and fail-over by replicating to a Samba BDC. Groups of LDAP PDCs and BDCs with load balancing are ideal for an enterprise environment. On the other hand, LDAP configurations are inherently complex to setup and maintain. If SSL is to be incorporated with LDAP, the complexity instantly multiplies. Even so, with careful and precise planning, LDAP is an ideal solution for enterprise environments.
Note the
passdb backend directive as well as specific LDAP suffix specifications. Although the Samba configuration for LDAP is straightforward, the installation of OpenLDAP is not trivial. LDAP should be installed and configured before any Samba configuration. Also notice that Samba and LDAP do not need to be on the same server to function. It is highly recommended to separate the two in an enterprise environment.
[global] workgroup = DOCS netbios name = DOCS_SRV passdb backend = ldapsam:ldap://ldap.example.com username map = /etc/samba/smbusers security = user add user script = /usr/sbin/useradd -m %u delete user script = /usr/sbin/userdel -r %u add group script = /usr/sbin/groupadd %g delete group script = /usr/sbin/groupdel %g add user to group script = /usr/sbin/usermod -G %g %u add machine script = \ /usr/sbin/useradd -s /bin/false -d /dev/null \ -g machines %u # The following specifies the default logon script # Per user logon scripts can be specified in the # user account using pdbedit logon script = scripts\logon.bat # This sets the default profile path. # Set per user paths with pdbedit logon path = \\%L\Profiles\%U logon drive = H: logon home = \\%L\%U domain logons = Yes os level = 35 preferred master = Yes domain master = Yes ldap suffix = dc=example,dc=com ldap machine suffix = ou=People ldap user suffix = ou=People ldap group suffix = ou=Group ldap idmap suffix = ou=People ldap admin dn = cn=Manager ldap ssl = no ldap passwd sync = yes idmap uid = 15000-20000 idmap gid = 15000-20000 ... # Other resource shares ... ...
Note
Implementing LDAP in this
smb.conf file assumes that a working LDAP server has been successfully installed on ldap.example.com.
