Linux man pages

Section (5) slapo-memberof

Linux manual pages	Section 5

Name

slapo−memberof — Reverse Group Membership overlay to slapd

Synopsis

ETCDIR/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.

verlay 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 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 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. 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.

FILES

ETCDIR/slapd.conf: default slapd configuration file

ACKNOWLEDGEMENTS

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