Red Hat Directory Server 8.0 Configuration, Command, and File Reference

the ldbm 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 Section 1.31, “Retro

Changelog Plug-in” for further information about the Retro Changelog Plug-in.

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.

cn=changelog5