1SLAPD.OVERLAYS(5)             File Formats Manual            SLAPD.OVERLAYS(5)
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NAME

6       slapd.overlays - overlays for slapd, the stand-alone LDAP daemon
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DESCRIPTION

9       The slapd(8) daemon can use a variety of different overlays to alter or
10       extend the normal behavior of a database backend.  Overlays may be com‐
11       piled  statically  into  slapd, or when module support is enabled, they
12       may be dynamically loaded. Most of the overlays are only allowed to  be
13       configured  on  individual  databases,  but some may also be configured
14       globally.
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16       Configuration options for each overlay are documented separately in the
17       corresponding slapo-<overlay>(5) manual pages.
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19       accesslog
20              Access  Logging.   This  overlay  can record accesses to a given
21              backend database on another database.
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23       auditlog
24              Audit Logging.  This overlay records changes on a given  backend
25              database to an LDIF log file.  By default it is not built.
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27       chain  Chaining.  This overlay allows automatic referral chasing when a
28              referral would have been returned, either when configured by the
29              server or when requested by the client.
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31       constraint
32              Constraint.   This  overlay  enforces  a regular expression con‐
33              straint on all values of specified attributes.  It  is  used  to
34              enforce  a  more  rigorous  syntax when the underlying attribute
35              syntax is too general.
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37       dds    Dynamic  Directory  Services.   This  overlay  supports  dynamic
38              objects,  which  have a limited life after which they expire and
39              are automatically deleted.
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41       dyngroup
42              Dynamic Group.  This is a demo overlay which extends the Compare
43              operation  to  detect  members  of  a  dynamic group.  It has no
44              effect on any other operations.
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46       dynlist
47              Dynamic List.  This overlay allows expansion of  dynamic  groups
48              and more.
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50       pcache Proxycache.  This overlay allows caching of LDAP search requests
51              in  a  local  database.   It  is  most  often  used   with   the
52              slapd-ldap(5) or slapd-meta(5) backends.
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54       ppolicy
55              Password  Policy.   This  overlay provides a variety of password
56              control mechanisms, e.g.  password  aging,  password  reuse  and
57              duplication control, mandatory password resets, etc.
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59       refint Referential  Integrity.  This overlay can be used with a backend
60              database such as slapd-bdb(5) to maintain the cohesiveness of  a
61              schema which utilizes reference attributes.
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63       retcode
64              Return  Code.   This  overlay  is useful to test the behavior of
65              clients when server-generated erroneous and/or unusual responses
66              occur.
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68       rwm    Rewrite/remap.  This overlay is experimental.  It performs basic
69              DN/data rewrite and objectClass/attributeType mapping.
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71       syncprov
72              Syncrepl Provider.  This overlay  implements  the  provider-side
73              support  for  syncrepl  replication, including persistent search
74              functionality.
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76       translucent
77              Translucent Proxy.  This overlay can  be  used  with  a  backend
78              database  such  as slapd-bdb(5) to create a "translucent proxy".
79              Content of entries retrieved from a remote LDAP  server  can  be
80              partially overridden by the database.
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82       unique Attribute  Uniqueness.   This overlay can be used with a backend
83              database such as slapd-bdb(5) to enforce the uniqueness of  some
84              or all attributes within a subtree.
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86       valsort
87              Value  Sorting.   This overlay can be used to enforce a specific
88              order for the values of an attribute when it is  returned  in  a
89              search.
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FILES

92       /etc/openldap/slapd.conf
93              default slapd configuration file
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95       /etc/openldap/slapd.d
96              default slapd configuration directory
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SEE ALSO

99       ldap(3),    slapo-accesslog(5),    slapo-auditlog(5),   slapo-chain(5),
100       slapo-constraint(5), slapo-dds(5), slapo-dyngroup(5), slapo-dynlist(5),
101       slapo-pcache(5),  slapo-ppolicy(5),  slapo-refint(5), slapo-retcode(5),
102       slapo-rwm(5), slapo-syncprov(5), slapo-translucent(5), slapo-unique(5).
103       slapo-valsort(5).   slapd-config(5),  slapd.conf(5), slapd.backends(5),
104       slapd(8).    "OpenLDAP   Administrator's   Guide"    (http://www.OpenL‐
105       DAP.org/doc/admin/)
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ACKNOWLEDGEMENTS

108       OpenLDAP  Software  is developed and maintained by The OpenLDAP Project
109       <http://www.openldap.org/>.  OpenLDAP Software is derived from  Univer‐
110       sity of Michigan LDAP 3.3 Release.
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114OpenLDAP 2.4.23                   2010/06/30                 SLAPD.OVERLAYS(5)
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