Langue: en

Version: 2007/09/04 (mandriva - 22/10/07)

Section: 5 (Format de fichier)


slapo-translucent - Translucent Proxy overlay to slapd




The Translucent Proxy overlay can be used with a backend database such as slapd-bdb(5) to create a "translucent proxy". Entries retrieved from a remote LDAP server may have some or all attributes overridden, or new attributes added, by entries in the local database before being presented to the client.

A search operation is first populated with entries from the remote LDAP server, the attributes of which are then overridden with any attributes defined in the local database. Local overrides may be populated with the add, modify , and modrdn operations, the use of which is restricted to the root user.

A compare operation will perform a comparison with attributes defined in the local database record (if any) before any comparison is made with data in the remote database.


The Translucent Proxy overlay uses a remote LDAP server which is configured with the options shown in slapd-ldap(5). These slapd.conf options are specific to the Translucent Proxy overlay; they should appear after the overlay directive.
By default, attempts to delete attributes in either the local or remote databases will be silently ignored. The translucent_strict directive causes these modifications to fail with a Constraint Violation.
This configuration option disables the automatic creation of "glue" records for an add or modrdn operation, such that all parents of an entry added to the local database must be created by hand. Glue records are always created for a modify operation.


The Translucent Proxy overlay will disable schema checking in the local database, so that an entry consisting of overlay attributes need not adhere to the complete schema.

Because the translucent overlay does not perform any DN rewrites, the local and remote database instances must have the same suffix. Other configurations will probably fail with No Such Object and other errors.


default slapd configuration file


slapd.conf(5), slapd-ldap(5).