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SLAPO-MEMBEROF(5)                                                                          SLAPO-MEMBEROF(5)



NAME
       slapo-memberof - Reverse Group Membership overlay to slapd

SYNOPSIS
       /etc/openldap/slapd.conf

DESCRIPTION
       The  memberof  overlay to slapd(8) allows automatic reverse group membership maintenance.  Any time a
       group entry is modified, its members are modified as appropriate in order to  keep  a  DN-valued  "is
       member of" attribute updated with the DN of the group.


CONFIGURATION
       The  config  directives  that  are specific to the memberof overlay must be prefixed by memberof-, to
       avoid potential conflicts with directives specific to the underlying database  or  to  other  stacked
       overlays.


       overlay memberof
              This  directive  adds  the  memberof  overlay  to  the current database; see slapd.conf(5) for
              details.


       The following slapd.conf configuration options are defined for the memberof overlay.


       memberof-group-oc <group-oc>
              The value <group-oc> is the name of the objectClass that triggers the reverse group membership
              update.  It defaults to groupOfNames.


       memberof-member-ad <member-ad>
              The  value  <member-ad> is the name of the attribute that contains the names of the members in
              the group objects; it must be DN-valued.  It defaults to member.


       memberof-memberof-ad <memberof-ad>
              The value <memberof-ad> is the name of the attribute that contains the names of the groups  an
              entry is member of; it must be DN-valued.  Its contents are automatically updated by the over-lay. overlay.
              lay.  It defaults to memberOf.


       memberof-dn <dn>
              The value <dn> contains the DN that is used as modifiersName for internal  modifications  per-formed performed
              formed  to  update  the reverse group membership.  It defaults to the rootdn of the underlying
              database.


       memberof-dangling {ignore, drop, error}
              This option determines the behavior of the overlay when, during a modification, it  encounters
              dangling  references.   The  default  is  ignore,  which may leave dangling references.  Other
              options are drop, which discards those modifications that would result in dangling references,
              and error, which causes modifications that would result in dangling references to fail.


       memberof-dangling-error <error-code>
              If  memberof-dangling  is set to error, this configuration parameter can be used to modify the
              response code returned in case of violation.  It defaults to "constraint violation", but other
              implementations are known to return "no such object" instead.


       memberof-refint {true|FALSE}
              This  option determines whether the overlay will try to preserve referential integrity or not.
              If set to TRUE, when an entry containing values of the "is member of" attribute  is  modified,
              the corresponding groups are modified as well.


       The memberof overlay may be used with any backend that provides full read-write functionality, but it
       is mainly intended for use with local storage backends. The maintenance operations  it  performs  are
       internal  to  the server on which the overlay is configured and are never replicated. Replica servers
       should be configured with their own instances of the memberOf overlay if it is  desired  to  maintain
       these memberOf attributes on the replicas.


FILES
       /etc/openldap/slapd.conf
              default slapd configuration file

SEE ALSO
       slapd.conf(5),  slapd-config(5), slapd(8).  The slapo-memberof(5) overlay supports dynamic configura-tion configuration
       tion via back-config.

ACKNOWLEDGEMENTS
       This module was written in 2005 by Pierangelo Masarati for SysNet s.n.c.




OpenLDAP 2.4.28                                  2011/11/24                                SLAPO-MEMBEROF(5)