SLAPD.OVERLAYS(5)						File Formats Manual						 SLAPD.OVERLAYS(5)

NAME

       slapd.overlays - overlays for slapd, the stand-alone LDAP daemon

DESCRIPTION

       The  slapd(8) daemon can use a variety of different overlays to alter or extend the normal behavior of a database backend.  Overlays may be
       compiled statically into slapd, or when module support is enabled, they may be dynamically loaded. Most of the overlays are only allowed to
       be configured on individual databases, but some may also be configured globally.

       Configuration options for each overlay are documented separately in the corresponding slapo-<overlay>(5) manual pages.

       accesslog
	      Access Logging.  This overlay can record accesses to a given backend database on another database.

       auditlog
	      Audit Logging.  This overlay records changes on a given backend database to an LDIF log file.  By default it is not built.

       chain  Chaining.   This	overlay  allows automatic referral chasing when a referral would have been returned, either when configured by the
	      server or when requested by the client.

       constraint
	      Constraint.  This overlay enforces a regular expression constraint on all values of specified attributes. It is used  to	enforce  a
	      more rigorous syntax when the underlying attribute syntax is too general.

       dds    Dynamic  Directory Services.  This overlay supports dynamic objects, which have a limited life after which they expire and are auto-
	      matically deleted.

       dyngroup
	      Dynamic Group.  This is a demo overlay which extends the Compare operation to detect members of a dynamic group.	It has	no  effect
	      on any other operations.

       dynlist
	      Dynamic List.  This overlay allows expansion of dynamic groups and more.

       pcache Proxycache.   This overlay allows caching of LDAP search requests in a local database.  It is most often used with the slapd-ldap(5)
	      or slapd-meta(5) backends.

       ppolicy
	      Password Policy.	This overlay provides a variety of password control mechanisms, e.g. password aging, password reuse  and  duplica-
	      tion control, mandatory password resets, etc.

       refint Referential  Integrity.	This  overlay  can  be used with a backend database such as slapd-bdb(5) to maintain the cohesiveness of a
	      schema which utilizes reference attributes.

       retcode
	      Return Code.  This overlay is useful to test the behavior of clients when server-generated erroneous and/or unusual responses occur.

       rwm    Rewrite/remap.  This overlay is experimental.  It performs basic DN/data rewrite and objectClass/attributeType mapping.

       syncprov
	      Syncrepl Provider.  This overlay implements the provider-side support for syncrepl replication, including  persistent  search  func-
	      tionality.

       translucent
	      Translucent  Proxy.  This overlay can be used with a backend database such as slapd-bdb(5) to create a "translucent proxy".  Content
	      of entries retrieved from a remote LDAP server can be partially overridden by the database.

       unique Attribute Uniqueness.  This overlay can be used with a backend database such as slapd-bdb(5) to enforce the uniqueness  of  some	or
	      all attributes within a subtree.

       valsort
	      Value Sorting.  This overlay can be used to enforce a specific order for the values of an attribute when it is returned in a search.

FILES

       /etc/ldap/slapd.conf
	      default slapd configuration file

       /etc/ldap/slapd.d
	      default slapd configuration directory

SEE ALSO

       ldap(3),  slapo-accesslog(5),  slapo-auditlog(5),  slapo-chain(5),  slapo-constraint(5), slapo-dds(5), slapo-dyngroup(5), slapo-dynlist(5),
       slapo-pcache(5),   slapo-ppolicy(5),   slapo-refint(5),	 slapo-retcode(5),    slapo-rwm(5),    slapo-syncprov(5),    slapo-translucent(5),
       slapo-unique(5).   slapo-valsort(5).   slapd-config(5),	slapd.conf(5),	slapd.backends(5),  slapd(8).	"OpenLDAP  Administrator's  Guide"
       (http://www.OpenLDAP.org/doc/admin/)

ACKNOWLEDGEMENTS

       OpenLDAP Software is developed and maintained by The OpenLDAP Project <http://www.openldap.org/>.  OpenLDAP Software is derived	from  Uni-
       versity of Michigan LDAP 3.3 Release.

OpenLDAP							    2012/04/23							 SLAPD.OVERLAYS(5)