SLAPO-MEMBEROF(5)             File Formats Manual            SLAPO-MEMBEROF(5)

       slapo-memberof - Reverse Group Membership overlay to slapd


       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.

       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

       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
              overlay.  It defaults to memberOf.

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

       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"

       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.  Note that slapo-memberOf is not
       compatible with syncrepl based replication, and should not be used in a
       replicated environment. An alternative is to use slapo-dynlist to
       emulate slapo-memberOf behavior.

              default slapd configuration file

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

       This module was written in 2005 by Pierangelo Masarati for SysNet

OpenLDAP 2.4.48                   2019/07/24                 SLAPO-MEMBEROF(5)