1SLAPO-SYNCPROV(5) File Formats Manual SLAPO-SYNCPROV(5)
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6 slapo-syncprov - Sync Provider overlay to slapd
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9 /etc/openldap/slapd.conf
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12 The Sync Provider overlay implements the provider-side support for the
13 LDAP Content Synchronization (RFC4533) as well as syncrepl replication
14 support. The overlay can be used with any backend that maintains en‐
15 tryCSN and entryUUID attributes for its entries. It also creates a con‐
16 textCSN attribute in the root entry of the database.
17 The contextCSN is updated for every write operation performed against
19 the database. To reduce database contention, the contextCSN is only up‐
20 dated in memory. The value is written to the database on server shut‐
21 down and read into memory on startup, and maintained in memory there‐
22 after. Checkpoints may be configured to write the contextCSN into the
23 underlying database to minimize recovery time after an unclean shut‐
24 down.
25 On databases that support inequality indexing, it is highly recommended
27 to set an eq index on the entryCSN attribute when using this overlay.
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30 These slapd.conf options apply to the Sync Provider overlay. They
31 should appear after the overlay directive.
32 syncprov-checkpoint <ops> <minutes>
34 After a write operation has succeeded, write the contextCSN to
35 the underlying database if <ops> write operations or more than
36 <minutes> time have passed since the last checkpoint. Check‐
37 pointing is disabled by default.
38 syncprov-sessionlog <ops>
40 Configures an in-memory session log for recording information
41 about write operations made on the database. The <ops> speci‐
42 fies the number of operations that are recorded in the log. All
43 write operations (except Adds) are recorded in the log. When
44 using the session log, it is helpful to set an eq index on the
45 entryUUID attribute in the underlying database.
46 syncprov-sessionlog-source <dn>
48 Should not be set when syncprov-sessionlog is set and vice
49 versa.
50 When accesslog for this database is configured and is logging at
52 this suffix, it can be used as the session log source instead of
53 the in-memory session log mentioned above. This log has the ad‐
54 vantage of not starting afresh every time the server is
55 restarted.
56 syncprov-nopresent TRUE | FALSE
58 Specify that the Present phase of refreshing should be skipped.
59 This value should only be set TRUE for a syncprov instance on
60 top of a log database (such as one managed by the accesslog
61 overlay). The default is FALSE.
62 syncprov-reloadhint TRUE | FALSE
64 Specify that the overlay should honor the reloadHint flag in the
65 Sync Control. It must be set TRUE when using the accesslog over‐
66 lay for delta-based syncrepl replication support. The default
67 is FALSE.
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70 /etc/openldap/slapd.conf
71 default slapd configuration file
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74 slapd.conf(5), slapd-config(5), slapo-accesslog(5). OpenLDAP Adminis‐
75 trator's Guide.
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78 OpenLDAP Software is developed and maintained by The OpenLDAP Project
79 <http://www.openldap.org/>. OpenLDAP Software is derived from the Uni‐
80 versity of Michigan LDAP 3.3 Release.
81OpenLDAP 2.6.6 2023/07/31 SLAPO-SYNCPROV(5)