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NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION | FILES | SEE ALSO | ACKNOWLEDGEMENTS | COLOPHON |
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SLAPO-SYNCPROV(5) File Formats Manual SLAPO-SYNCPROV(5)
slapo-syncprov - Sync Provider overlay to slapd
ETCDIR/slapd.conf
The Sync Provider overlay implements the provider-side support for
the LDAP Content Synchronization (RFC4533) as well as syncrepl
replication support. The overlay can be used with any backend
that maintains entryCSN and entryUUID attributes for its entries.
It also creates a contextCSN attribute in the root entry of the
database.
The contextCSN is updated for every write operation performed
against the database. To reduce database contention, the
contextCSN is only updated in memory. The value is written to the
database on server shutdown and read into memory on startup, and
maintained in memory thereafter. Checkpoints may be configured to
write the contextCSN into the underlying database to minimize
recovery time after an unclean shutdown.
On databases that support inequality indexing, it is highly
recommended to set an eq index on the entryCSN attribute when
using this overlay.
These slapd.conf options apply to the Sync Provider overlay. They
should appear after the overlay directive.
syncprov-checkpoint <ops> <minutes>
After a write operation has succeeded, write the contextCSN
to the underlying database if <ops> write operations or
more than <minutes> time have passed since the last
checkpoint. Checkpointing is disabled by default.
syncprov-sessionlog <ops>
Configures an in-memory session log for recording
information about write operations made on the database.
The <ops> specifies the number of operations that are
recorded in the log. All write operations (except Adds) are
recorded in the log. When using the session log, it is
helpful to set an eq index on the entryUUID attribute in
the underlying database.
syncprov-sessionlog-source <dn>
Should not be set when syncprov-sessionlog is set and vice
versa.
When accesslog for this database is configured and is
logging at this suffix, it can be used as the session log
source instead of the in-memory session log mentioned
above. This log has the advantage of not starting afresh
every time the server is restarted.
syncprov-nopresent TRUE | FALSE
Specify that the Present phase of refreshing should be
skipped. This value should only be set TRUE for a syncprov
instance on top of a log database (such as one managed by
the accesslog overlay). The default is FALSE.
syncprov-reloadhint TRUE | FALSE
Specify that the overlay should honor the reloadHint flag
in the Sync Control. It must be set TRUE when using the
accesslog overlay for delta-based syncrepl replication
support. The default is FALSE.
ETCDIR/slapd.conf
default slapd configuration file
slapd.conf(5), slapd-config(5), slapo-accesslog(5). OpenLDAP
Administrator's Guide.
OpenLDAP Software is developed and maintained by The OpenLDAP
Project <http://www.openldap.org/>. OpenLDAP Software is derived
from the University of Michigan LDAP 3.3 Release.
This page is part of the OpenLDAP (an open source implementation
of the Lightweight Directory Access Protocol) project.
Information about the project can be found at
⟨http://www.openldap.org/⟩. If you have a bug report for this
manual page, see ⟨http://www.openldap.org/its/⟩. This page was
obtained from the project's upstream Git repository
⟨https://git.openldap.org/openldap/openldap.git⟩ on 2025-08-11.
(At that time, the date of the most recent commit that was found
in the repository was 2025-08-05.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
OpenLDAP LDVERSION RELEASEDATE SLAPO-SYNCPROV(5)
Pages that refer to this page: slapd.overlays(5)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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