Red Hat 8.1 - Manual (Page 130)

cn=plugins, cn=config
Valid Range
1 to 2 32 -1 on 32-bit systems or 2 6 3 -1 on 64-bit
systems or -1, which means limitless
Default Value -1
Syntax Integer
Example nsslapd-cachesize: -1
3.4 .3.2. nsslapd-cachememsize
This performance tuning-related attribute specifies the size, in bytes, for the available memory space for
the entry cache. The simplest method is limiting cache size in terms of memory occupied. Activating
automatic cache resizing overrides this attribute, replacing these values with its own guessed values at
a later stage of the server startup.
The BerkeleyDB documentation offers a good explanation of what the entry cache is, along with
management information like how to monitor the cache with db_stat -m.
NOTE
The nsslapd-cachememsize attribute also defines the import buffer size. The import buffer size
is automatically configured to be 80% of whatever the nsslapd-cachememsize setting is. When
importing databases with very large attributes, be sure to reset the nsslapd-cachememsize
value to something high enough so that .80*cacheSize is enough to allow the import to proceed.
Attempting to set a value that is not a number or is too big for a 32-bit signed integer (on 32-bit systems)
returns an LDAP_UNWILLING_TO_PERFORM error message with additional error information explaining
the problem.
NOTE
The performance counter for this setting goes to the highest 64-bit integer, even on 32-bit
systems, but the setting itself is limited on 32-bit systems to the highest 32-bit integer because of
how the system addresses memory.
Parameter Description
Entry DN cn=database_name, cn=ldbm database,
cn=plugins, cn=config
Valid Range 500 kilobytes to 2 32 -1 on 32-bit systems and to
2 6 4 -1 on 64-bit systems
Default Value 10,485,760 (10 megabytes)
Syntax Integer
Example nsslapd-cachememsize: 10485760
3.4 .3.3. nsslapd-directory
This attribute specifies the path to the database instance. If it is a relative path, it starts from the path
specified by nsslapd-directory in the global database entry cn=config, cn=ldbm database,
cn=plugins, cn=config. The database instance directory is named after the instance name and
located in the global database directory, by default. After the database instance has been created, do
not modify this path, because any changes risk preventing the server from accessing data.
Parameter Description
Entry DN cn=database_name, cn=ldbm database,
cn=plugins, cn=config
Valid Values Any valid path to the database instance
Default Value
Syntax
DirectoryString
Example nsslapd-directory:
/var/lib/dirsrv/slapd-instance_name/db/userRoot
3.4 .3.4 . nsslapd-readonly
This attribute specifies read-only mode for a single back-end instance. If this attribute has a value of
off, then users have all read, write, and execute permissions allowed by their access permissions.
Parameter Description
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Chapter 3. Plug-in Implemented Server Functionality Reference