Installation guide

Along with meeting the required operating system patches and platforms, system settings, like the
number of file descriptors and T CP information, should be reconfigured to optimize the Directory Server
performance.
After the packages for Directory Server are installed there is tool called dsktune which can scan a
system to check for required and installed patches, memory, system configuration, and other settings
required by Directory Server. The dsktune utility even returns information required for tuning the host
server's kernel parameters. T his simplifies configuring the machine for Directory Server.
NOTE
The setup program also runs dsktune, reports the findings, and asks you if you want to continue
with the setup procedure every time a Directory Server instance is configured.
Red Hat recommends running dsktune before beginning to set up the Directory Server instances so
that you can properly configure your kernel settings and install any missing patches. T he dsktune utility
is in the /usr/bin directory. To run it, simply use the appropriate command:
/usr/bin/dsktune
Red Hat Directory Server system tuning analysis version 10-AUGUST-2007.
NOTICE : System is i686-unknown-linux2.6.9-34.EL (1 processor).
WARNING: 1011MB of physical m emory is available on the system .
1024MB is recom mended for best performance on large production system.
NOTICE : The net.ipv4.tcp_keepalive_tim e is set to 7200000 milliseconds
(120 minutes). This may cause temporary server congestion from lost
client connections.
WARNING: There are only 1024 file descriptors (hard limit) available, which
limit the number of sim ultaneous connections.
WARNING: There are only 1024 file descriptors (soft limit) available, which
limit the number of sim ultaneous connections.
NOTE
dsktune is run every time the Directory Server configuration script, setup-ds-adm in, is run.
2.3. Red Hat Enterprise Linux Operating System Requirements
Directory Server is supported on two versions of Red Hat Enterprise Linux:
Red Hat Enterprise Linux 4 on x86 and x86_64 platforms
Red Hat Enterprise Linux 5 on x86 and x86_64 platforms
Chapter 2. System Requirements
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