Red Hat DIRECTORY SERVER 8.0 Command Reference Manual page 73

databases. The changelog entry supports the following attributes with the same meaning as for
databases:
The default values for the cache-related memory parameters (tuned for a single backend replicated to
a single consumer) are as follows:
• nsslapd-cachesize: 3000 (3000 entries)
• nsslapd-cachememsize: 10000000 (10 Mbyte)
When more backends are replicated or when one backend is replicated to more than one consumer,
tune the parameters as below:
nsslapd-cachesize = 2000*#repl_agreements_initiated_from_this_server
nsslapd-cachememsize = 5000000*#repl_agreements_initiated_from_this_server
Also, the relationship between the values assigned to the nsslapd-dbcachesize and nsslapd-
cachememsize parameters should be the same as the relationship that is described in the database-
tuning section.
The cn=changelog5,cn=config entry is an instance of the extensibleObject object class.
It is worth noting that two different types of changelogs are maintained by Directory Server. The first
type, which is stored here and referred to as the changelog, is used by multi-master replication;
the second changelog, which is actually a plug-in and referred to as the retro changelog, is for
compatibility with some legacy applications. See
information about the Retro Changelog Plug-in.
2.3.2.1. nsslapd-changelogdir
This required attribute specifies the name of the directory in which the changelog database is created.
Whenever a changelog configuration entry is created, it must contain a valid directory; otherwise,
the operation is rejected. The GUI proposes by default that this database be stored in /var/lib/
dirsrv/slapd-instance_name/changelogdb.
CAUTION
If the cn=changelog5 entry is removed, the directory specified in the nsslapd-
changelogdir parameter, including any subdirectories, are removed, with all of their
contents.
NOTE
For performance reasons, store this database on a different physical disk.
The server has to be restarted for changes to this attribute to go into effect.
Parameter
Entry DN
Section 3.1.31, "Retro Changelog Plug-in"
Description
cn=changelog5,cn=config
cn=changelog5
for further
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