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slapd-ldap section with a very, very simple example. Too simple?

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Gavin Henry 2008-07-11 14:34:36 +00:00
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doc/guide/admin/backends.sdf
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@ -54,9 +54,54 @@ in some modified form. For this purpose, the proxy binds to the remote server
with some administrative identity, and, if required, authorizes the asserted
identity.
It is heavily used by a lot of other {{SECT: Backends}} and {{SECT: Overlays}}.
H3: back-ldap Configuration
LATER
As previously mentioned, {{slapd-ldap(5)}} is used behind the scenes by many
other {{SECT: Backends}} and {{SECT: Overlays}}. Some of them merely provide a
few configuration directive themselves, but have available to the administrator
the whole of the {{slapd-ldap(5)}} options.
For example, the {{SECT: Translucent Proxy}}, which retrieves entries from a
remote LDAP server that can be partially overridden by the defined database, has
only four specific {{translucent-}} directives, but can be configured using any
of the normal {{slapd-ldap(5)}} options. See {[slapo-translucent(5)}} for details.
Other {{SECT: Overlays}} allow you to tag directives in front of a normal
{{slapd-ldap(5)}} directive. For example, the {{slapo-chain(5)}} overlay does
this:
{{"There are very few chain overlay specific directives; however, directives
related to the instances of the ldap backend that may be implicitly instantiated
by the overlay may assume a special meaning when used in conjunction with this
overlay. They are described in slapd-ldap(5), and they also need to be prefixed
by chain-."}}
You may have also seen the {{slapd-ldap(5)}} backend used and described in the
{{SECT: Push Based}} {{SECT: Replication}} section of the guide.
It should therefore be obvious that the {{slapd-ldap(5)}} backend is extremely
flexible and heavily used throughout the OpenLDAP Suite.
The following is a very simple example, but already the power of the {{slapd-ldap(5)}}
backend is seen by use of a {{uri list}}:
> database ldap
> suffix "dc=suretecsystems,dc=com"
> rootdn "cn=slapd-ldap"
> uri ldap://localhost/ ldap://remotehost ldap://remotehost2
The URI list is space or comma-separated. Whenever the server that responds
is not the first one in the list, the list is rearranged and the responsive
server is moved to the head, so that it will be first contacted the next time
a connection needs be created.
This feature can be used to provide a form of load balancing when using
{{SECT: MirrorMode replication}}.
As always, refer to the {{slapd-ldap(5)}} man page for the finer details.
H3: Further Information