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64b720d284
Signed-off-by: Michael Adam <obnox@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
30 lines
1.6 KiB
XML
30 lines
1.6 KiB
XML
<samba:parameter name="ldapsam:trusted"
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context="G"
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type="string"
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xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
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<description>
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<para>
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By default, Samba as a Domain Controller with an LDAP backend needs to use the Unix-style NSS subsystem to
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access user and group information. Due to the way Unix stores user information in /etc/passwd and /etc/group
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this inevitably leads to inefficiencies. One important question a user needs to know is the list of groups he
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is member of. The plain UNIX model involves a complete enumeration of the file /etc/group and its NSS
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counterparts in LDAP. UNIX has optimized functions to enumerate group membership. Sadly, other functions that
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are used to deal with user and group attributes lack such optimization.
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</para>
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<para>
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To make Samba scale well in large environments, the <smbconfoption name="ldapsam:trusted">yes</smbconfoption>
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option assumes that the complete user and group database that is relevant to Samba is stored in LDAP with the
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standard posixAccount/posixGroup attributes. It further assumes that the Samba auxiliary object classes are
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stored together with the POSIX data in the same LDAP object. If these assumptions are met,
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<smbconfoption name="ldapsam:trusted">yes</smbconfoption> can be activated and Samba can bypass the
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NSS system to query user group memberships. Optimized LDAP queries can greatly speed up domain logon and
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administration tasks. Depending on the size of the LDAP database a factor of 100 or more for common queries
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is easily achieved.
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</para>
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</description>
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<value type="default">no</value>
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</samba:parameter>
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