slapd-null — Null backend to slapd




The Null backend to slapd(8) is surely the most useful part of slapd:
- Searches return success but no entries.
- Compares return compareFalse.
- Updates return success (unless readonly is on) but do nothing.
- Binds other than as the rootdn fail unless the database option "bind on" is given.
- The slapadd(8) and slapcat(8) tools are equally exciting.
Inspired by the /dev/null device.


This slapd.conf option applies to the NULL backend database. That is, it must follow a "database null" line and come before any subsequent "database" lines. Other database options are described in the slapd.conf(5) manual page.

bind <on/off>

Allow binds as any DN in this backend's suffix, with any password. The default is "off".

dosearch <on/off>

If enabled, a single entry will be returned on all search requests. The entry's DN will be the same as the database suffix. The default is "off".


Here is a possible slapd.conf extract using the Null backend:

database null
suffix   "cn=Nothing"
bind     on

Access Control

The null backend does not honor any of the access control semantics described in slapd.access(5).



default slapd configuration file

See Also

slapd.conf(5), slapd(8), slapadd(8), slapcat(8).

Referenced By

slapcat(8), slapd.backends(5), slapschema(8).

2018/12/19 OpenLDAP 2.4.47