Red Hat Enterprise Linux System Configuration - Red Hat DIRECTORY SERVER 8.0 Installation Manual

Chapter 2. System Requirements
kernel parameters for best performance. For information on dsktune, see
dsktune".
Criteria
Operating System
Required Filesystem
Table 2.3. System Versions

2.2.2.2. Red Hat Enterprise Linux System Configuration

After verifying the system's kernel and glibc configuration and installing any required modules and
patches, fine-tune the Red Hat Enterprise Linux system to work with Directory Server. For the best
performance, configure the host server before configuring the Directory Server instance by running the
setup-ds-admin.pl script.
Section 2.2.2.2.1, "Perl Prerequisites"
•
Section 2.2.2.2.2, "File Descriptors"
•
Section 2.2.2.2.3, "DNS Requirements"
•
2.2.2.2.1. Perl Prerequisites
For Red Hat Enterprise Linux systems, use the Perl version that is installed with the operating system
in /usr/bin/perl for both 32-bit and 64-bit versions of Red Hat Directory Server.
2.2.2.2.2. File Descriptors
Editing the number of file descriptors on the Linux system can help Directory Server access files more
efficiently. Editing the maximum number of file descriptors the kernel can allocate can also improve file
access speeds.
1. First, check the current limit for file descriptors:
cat /proc/sys/fs/file-max
2. If the setting is lower than 64000, edit the /etc/sysctl.conf file, and reset the fs.file-max
parameter:
fs.file-max = 64000
3. Then increase the maximum number of open files on the system by editing the /etc/security/
limits.conf configuration file. Add the following entry:
16
Requirements
Red Hat Enterprise Linux 4 AS and ES (x86 and
x86_64)
Red Hat Enterprise Linux 5 Server (x86 and
x86_64)
ext3
Section 2.2.1, "Using