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Appendix F
Installing and migrating x86 applications onto a PowerVM Lx86
system
This section explains how to install x86 applications onto a POWER platform, and how to migrate
existing applications from an x86 platform to a POWER platform. The general approach to migration
is to make the x86 application and data accessible from the POWER machine. This typically means
installing the application and copying or mounting the application files. No alteration of application
binaries is necessary, and no conversion of the data is necessary.
The combination of an application and the data that it needs is defined here as a workload.
The migration has two parts:
1. Migrating the x86 system configuration
2. Installing x86 applications
Migrating the x86 system configuration
User authentication, remote file systems, x86 configuration and daemons, and environment variables
are parts of the x86 system that might need migrating.
The installation script installs x86 libraries, commands, utilities, and infrastructure files in x86World.
For more information, see Chapter 5 of the PowerVM Lx86 for x86 Linux Applications Administration
Guide, “Running the PowerVM Lx86 installation script,” on page 19. You can add additional
packages later to x86World (see Updating the packages and files in x86World in “Running x86
applications reference” on page 40). This section summarizes the following areas of the x86 system
that might need migrating:
• User authentication
• Remote file systems
• x86 configuration and daemons
• Environment variables
User authentication
The users within x86World are separate from the users on the POWER system.
The root password for x86World can be the same as the root password for the POWER system, but
the root password for x86World is stored and maintained in the password files in x86World.
If you choose to add NIS support to x86World during installation, then all NIS user accounts are
visible in x86World and on the POWER system.
If an x86 application creates a new user (for example, during installation), then this user is created in
x86World and is not available on the POWER system.
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