This slapd.conf configuration option is define for the dynlist overlay. It may have multiple occurrences, and it must appear after the overlay directive.
The value <URL-ad> is the name of the attributeDescription that cointains the URI that is expanded by the overlay; if none is present, no expansion occurs. If the intersection of the attributes requested by the search operation (or the asserted attribute for compares) and the attributes listed in the URI is empty, no expansion occurs for that specific URI. It must be a subtype of labeledURI.
The value <member-ad> is optional; if present, the overlay behaves as a dynamic group: this attribute will list the DN of the entries resulting from the internal search. In this case, the <attrs> portion of the URI must be absent, and the DNs of all the entries resulting from the expansion of the URI are listed as values of this attribute. Compares that assert the value of the <member-ad> attribute of entries with <group-oc> objectClass apply as if the DN of the entries resulting from the expansion of the URI were present in the <group-oc> entry as values of the <member-ad> attribute.
The dynlist overlay may be used with any backend, but it is mainly intended for use with local storage backends. In case the URI expansion is very resource-intensive and occurs frequently with well-defined patterns, one should consider adding a proxycache later on in the overlay stack.
include /path/to/dyngroup.schema # ... database <database> # ... overlay dynlist dynlist-attrset groupOfURLs memberURL
and that slapd loads dynlist.la, if compiled as a run-time module; then add to the database an entry like
dn: cn=Dynamic List,ou=Groups,dc=example,dc=com objectClass: groupOfURLs cn: Dynamic List memberURL: ldap:///ou=People,dc=example,dc=com?mail?sub?(objectClass=person)
If no <attrs> are provided in the URI, all (non-operational) attributes are collected.
This example implements the dynamic group feature on the member attribute:
include /path/to/dyngroup.schema # ... database <database> # ... overlay dynlist dynlist-attrset groupOfURLs memberURL member