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14.3.3.3. Backup Domain Controller (BDC) using LDAP
A BDC is an integral part of any enterprise Samba/LDAP solution. The
smb.conf files between the PDC and BDC are virtually identical except for the domain master directive. Make sure the PDC has a value of Yes and the BDC has a value of No. If you have multiple BDCs for a PDC, the os level directive is useful in setting the BDC election priority. The higher the value, the higher the server priority for connecting clients.
Note
A BDC can either use the LDAP database of the PDC or have its own LDAP database. This example uses the LDAP database of the PDC as seen in the
passdb backend directive.
[global] workgroup = DOCS netbios name = DOCS_SRV2 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 = No 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 ... ...
