Red Hat DIRECTORY SERVER 7.1 User Manual

Core Server Configuration Attributes Reference
Chapter 2 Core Server Configuration Reference 69
nsslapd-maxdescriptors (Maximum File Descriptors)
This attribute sets the maximum, platform-dependent number of file descriptors
that the Directory Server will try to use. A file descriptor is used whenever a client
connects to the server and for some server activities, such as index maintenance.
The number of available file descriptors for TCP/IP connections is the total for 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. See
“nsslapd-reservedescriptors (Reserved File Descriptors),” on page 74.
The number that you specify here should not be greater than the total number of
file descriptors that your operating system allows the ns-slapd process to use.
This number will differ depending on your operating system. Some operating
systems allow you to configure the number of file descriptors available to a
process. See your operating-system documentation for details on file descriptor
limits and configuration. The dsktune program (explained in the Red Hat Directory
Server Installation Guide) can be used to suggest changes to the system kernel or
TCP/IP tuning attributes, including increasing the number of file descriptors if
necessary. You should consider increasing the value on this attribute if the
Directory Server is refusing connections because it is out of file descriptors. When
this occurs, the following message is written to the Directory Server’s error log file:
Not listening for new connections -- too many fds open
NOTE UNIX shells usually have configurable limits on the number of file
descriptors. See your operating-system documentation for further
information regarding limit and ulimit , as these limits can often
cause problems.
Entry DN: cn=config
Valid Range: 1 to 65535
Default Value: 1024
Syntax: Integer
Example: nsslapd-maxdescriptors: 1024

Red Hat DIRECTORY SERVER 7.1 Specifications

General

Brand	Red Hat
Model	DIRECTORY SERVER 7.1
Category	Server
Language	English