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55 lines
2.0 KiB
Plaintext
55 lines
2.0 KiB
Plaintext
Relay backend sets up a relay virtual database that allows
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to access other databases in the same instance of slapd
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through different naming contexts and remapping attribute
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values.
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The DN rewrite, filter rewrite and attributeType/objectClass
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mapping is done by means of the rewrite-remap overlay.
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The database containing the real naming context can be
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explicitly selected by means of the "relay" directive,
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which must contain the naming context of the target
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database. This also causes the rewrite-remap overlay
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to be automatically instantiated. If the optional keyword
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"massage" is present, the rewrite-remap overlay is
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automatically configured to map the virtual to the real
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naming context and vice-versa; in this case, the "suffix"
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directive must precede the "relay" directive.
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Otherwise, the rewrite-remap overlay must be explicitly
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instantiated, by using the "overlay" directive, as
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illustrated below. This allows much more freedom in target
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database selection and DN rewriting.
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If the "relay" directive is not present, the backend is
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not bound to a single target database; on the contrary,
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the target database is selected on a per-operation basis.
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This allows, for instance, to relay one database for
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authentication and anothe for search/modify, or allows
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to use one target for persons and another for groups
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and so on.
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# automatically massage from virtual to real naming context
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database relay
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suffix "dc=virtual,dc=naming,dc=context"
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relay "dc=real,dc=naming,dc=context" massage
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# explicitly massage (same as above)
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database relay
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suffix "dc=virtual,dc=naming,dc=context"
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overlay rewrite-remap
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suffixmassage "dc=virtual,dc=naming,dc=context" \
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"dc=real,dc=naming,dc=context"
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# old fashioned suffixalias, applied also to DN-valued attributes
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# from virtual to real naming context, but not the reverse...
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database relay
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suffix "dc=virtual,dc=naming,dc=context"
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overlay rewrite-remap
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rewriteEngine on
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rewriteContext default
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rewriteRule "(.*)dc=virtual,dc=naming,dc=context$" \
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"$1dc=real,dc=naming,dc=context"
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