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Man Pages


Manual Reference Pages  -  SLAPD.OVERLAYS (5)

NAME

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

CONTENTS

Description
Files
See Also
Acknowledgements

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.
collect
  Collective Attributes. This overlay implements RFC 3671 collective attributes; these attributes share common values over all the members of the collection as inherited from an ancestor entry.
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 automatically 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.
memberof
  MemberOf. This overlay maintains automatic reverse group membership values, typically stored in an attribute called memberOf.
pbind Proxybind. This overlay forwards simple bind requests on a local database to a remote LDAP server.
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 duplication 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.
sssvlv Server Side Sorting and Virtual List Views. This overlay implements the RFC2891 server-side sorting control and virtual list view controls, and replaces the RFC2696 paged-results implementation to ensure it works with the sorting technique.
syncprov
  Syncrepl Provider. This overlay implements the provider-side support for syncrepl replication, including persistent search functionality.
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

/usr/local/etc/openldap/slapd.conf
  default slapd configuration file
/usr/local/etc/openldap/slapd.d
  default slapd configuration directory

SEE ALSO

ldap(3), slapo-accesslog(5), slapo-auditlog(5), slapo-chain(5), slapo-collect(5), slapo-constraint(5), slapo-dds(5), slapo-dyngroup(5), slapo-dynlist(5), slapo-memberof(5), slapo-pbind(5), slapo-pcache(5), slapo-ppolicy(5), slapo-refint(5), slapo-retcode(5), slapo-rwm(5), slapo-sssvlv(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 University of Michigan LDAP 3.3 Release.
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OpenLDAP 2.4.44 SLAPD.OVERLAYS (5) 2016/02/05

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