Preparing Red Hat Enterprise Linux 9 for installation

You must complete extra steps to prepare a Red Hat® Enterprise Linux® Version 9 system for a WebSphere® Application Server installation.

Before you begin

Complete all steps in Preparing Linux systems for installation. Those steps are common to installing WebSphere Application Server on any Linux system.

About this task

After you complete the common steps that are required to install any Linux system, you must also complete extra system-specific steps that are required for Red Hat Enterprise Linux Version 9.

Verify that the prerequisite packages are installed. A Linux package registration limitation prevents the prerequisites checker program from examining prerequisite packages on Linux systems. For more information, see Installing and verifying Linux packages.

If Security-Enhanced Linux (SELinux) is enabled and enforced on your Red Hat Enterprise Linux Version 9 operating system while you install the product from disk, mount the disk with the following option:

-o context=system_u:object_r:textrel_shlib_t:s0

Important: If you are using Red Hat Multi Level Security (MLS), review the final s0 parameter.

Procedure

On all hardware platforms, install all required packages and their dependencies.
Run the following dnf command.
```
dnf install gtk2 libXtst xorg-x11-fonts-Type1 psmisc libnsl chkconfig libxcrypt-compat
```
The gtk2, libXtst, and xorg-x11-fonts-Type1 packages are required for graphical IBM® Installation Manager and Profile Management tool support. The psmisc package supports basic installation and profile creation.
Install the required 32-bit packages on 64-bit x86_64 systems.

By default, this operating system installs only 64-bit runtime support. However, various applications that are included with WebSphere Application Server require 32-bit runtime packages, including WebSphere Customization Toolbox (WCT).

32-bit components are not supported in this operating system release on the POWER®® and S390 architectures.
1. Install the following packages and their dependencies.
```
dnf install glibc.i686 gtk2.i686 libXtst.i686 libXft.i686 libXtst.i686 libnsl.i686
```
For Linux on Power Systems that run on little endian operating systems, review the following platform-specific limitations.
- IBM Installation Manager Version 1.9.1.5 or later is required.
- WebSphere Configuration Tools, including the Profile Management Tool, are supported in command-line only mode.

Results

If you do not install all of the required packages, the installation does not complete correctly. Error messages indicate missing libraries, the inability to load graphical interfaces, or other errors that occur during the installation.

What to do next

After verifying prerequisites, verifying the product disk, and setting your installation goals, you can start installing WebSphere Application Server by choosing one of the following installation procedures.