(Linux)
Prepare Red Hat Enterprise Linux 7 for installation
We must complete additional steps to prepare a Red Hat Enterprise Linux v7 system for a WebSphere Application Server installation.
Complete all steps in Prepare Linux systems for installation. Those steps are common to installing WAS on any Linux system.
After completing the common steps required to install any Linux system, we must also complete extra system-specific steps required for Red Hat Enterprise Linux Version 7.
Verify that the prerequisite packages are installed. A Linux package registration limitation prevents the prerequisites checker program from examining prerequisite packages on Linux systems. See Install and verifying Linux packages for more information.
Consider the following points if we have enabled Security-Enhanced Linux (SELinux) on your Red Hat Enterprise Linux v7 operating system:
- If SELinux is enabled and enforced while we are installing the product from the disk, we must mount the disk with the following option:
-o context=system_u:object_r:textrel_shlib_t
- If we enable SELinux after installing the product while SELinux is disabled, the file labels are reset when the system is rebooted. In this scenario, run the relabel_linux.sh script located in the app_server_root/properties/install/script/ directory to relabel the product runtime files. Running the relabel_linux.sh command is not necessary if we made security mode changes with the command setenforce, which does not require a system reboot.
Tasks
On all hardware platforms, install all required packages and their dependencies by running the following yum command:
yum install gtk2 libXtst xorg-x11-fonts-Type1 psmisc
The gtk2, libXtst, and xorg-x11-fonts-Type1 packages are required for graphical Installation Manager and Profile Management tool support. The psmisc package provides support for basic installation and profile creation.
- On POWER systems, ensure that the kernel level is set to a minimum of
3.10.0-123.6.3.el7. Run the following command:
uname -r
- For POWER Little Endian (LE), review the following platform-specific limitations:
- Edge Caching Proxy is not supported on this architecture.
- Load Balancer for IPv4 and IPv6 components Content Based Routing (CBR) and Site Selector are not supported.
- Load Balancer for IPv4 and IPv6 requires the IBM Advanced Toolchain 7.1 runtime packages. See IBM Advance Toolchain for PowerLinux™ documentation.
If we 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 the installation goals, we can start installing WAS by choosing one of the following installation procedures:
- Perform an installation using the graphical user interface.
See Install the product offerings on distributed operating systems using the GUI.
- Perform a silent installation.
- Install additional features on an existing product.