Red Hat DIRECTORY SERVER 8.0 Command Reference Manual page 49

2.3.1.65. nsslapd-lockdir (Server Lock File Directory)
This is the full path to the directory the server uses for lock files. The default value is /var/lock/
dirsrv/slapd-instance_name. Changes to this value will not take effect until the server is
restarted.
Parameter
Entry DN
Valid Values
Default Value
Syntax
Example
2.3.1.66. nsslapd-maxbersize (Maximum Message Size)
Defines the maximum size in bytes allowed for an incoming message. This limits the size of LDAP
requests that can be handled by the Directory Server. Limiting the size of requests prevents some
kinds of denial of service attacks.
The limit applies to the total size of the LDAP request. For example, if the request is to add an entry
and if the entry in the request is larger than two megabytes, then the add request is denied. Be
cautious before changing this attribute, and Red Hat recommends contacting Directory Server support
first.
Parameter
Entry DN
Valid Range
Default Value
Syntax
Example
2.3.1.67. nsslapd-maxdescriptors (Maximum File Descriptors)
This attribute sets the maximum, platform-dependent number of file descriptors that the Directory
Server tries to use. A file descriptor is used whenever a client connects to the server and also for
some server activities, such as index maintenance. File descriptors are also used by access logs,
error logs, audit logs, database files (indexes and transaction logs), and as sockets for outgoing
connections to other servers for replication and chaining.
The number of descriptors available for TCP/IP to serve client connections is determined by
nsslapd-conntablesize, and is equal to the nsslapd-maxdescriptors attribute minus the
number of file descriptors used by the server as specified in the nsslapd-reservedescriptors
attribute for non-client connections, such as index management and managing replication. The
nsslapd-reservedescriptors attribute is the number of file descriptors available for other uses
as described above. See
Section 2.3.1.78, "nsslapd-reservedescriptors (Reserved File
Description
cn=config
Absolute path to a directory owned by the server
user ID with write access to the server ID
/var/lock/dirsrv/slapd-instance_name
DirectoryString
nsslapd-lockdir: /var/lock/dirsrv/
slapd-instance_name
Description
cn=config
0 - 2 gigabytes (2,147,483,647 bytes)
Zero 0 means that the default value should be
used.
2097152
Integer
nsslapd-maxbersize: 2097152
cn=config
Descriptors)".
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