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
15 entryCSN and entryUUID attributes for its entries. It also creates a
16 contextCSN 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
20 updated 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 helpful to set an
27 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-nopresent TRUE | FALSE
48 Specify that the Present phase of refreshing should be skipped.
49 This value should only be set TRUE for a syncprov instance on
50 top of a log database (such as one managed by the accesslog
51 overlay). The default is FALSE.
52 syncprov-reloadhint TRUE | FALSE
54 Specify that the overlay should honor the reloadHint flag in the
55 Sync Control. In OpenLDAP releases 2.3.11 and earlier the syn‐
56 crepl consumer did not properly set this flag, so the overlay
57 must ignore it. This option should be set TRUE when working with
58 newer releases that properly support this flag. It must be set
59 TRUE when using the accesslog overlay for delta-based syncrepl
60 replication support. The default is FALSE.
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63 /etc/openldap/slapd.conf
64 default slapd configuration file
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67 slapd.conf(5), slapd-config(5), slapo-accesslog(5). OpenLDAP Adminis‐
68 trator's Guide.
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71 OpenLDAP Software is developed and maintained by The OpenLDAP Project
72 <http://www.openldap.org/>. OpenLDAP Software is derived from Univer‐
73 sity of Michigan LDAP 3.3 Release.
74OpenLDAP 2.4.44 2016/02/05 SLAPO-SYNCPROV(5)