Migrating to Red Hat Enterprise Linux 4

Short Description
for commercial deployments of Red Hat Enterprise Linux. Administrator … are provided in Appendix A of the Red Hat Enterprise Linux Installation Guide, …

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Content
Migrating to Red Hat
Enterprise Linux 4:
Upgrading to the latest Red Hat release
By Donald Fischer
Abstract
Red Hat Enterprise Linux subscribers may choose to
deploy any of the supported versions of the product family,
and may upgrade to a new major release on their own
schedule without incurring additional subscription cost.
This whitepaper provides guidance on how to evaluate,
plan, and execute a migration to Red Hat Enterprise Linux
4 from a prior Red Hat Enterprise Linux release or legacy
Red Hat Linux distribution.
February 2005
Copyright . 2005 Red Hat, Inc. All rights reserved. “Red Hat” and the “Shadowman” logo are registered trademarks of Red Hat, Inc. in the US and other countries. Linux is a
registered trademark of Linus Torvalds. All other trademarks referenced herein are the trademarks of their respective owners. WHP83528US 02/05Table of contents
Why migrate to Red Hat Enterprise Linux 4?…………………………………………….3
Types of migrations ………………………………………………………………………………3
Administratorguided
migration from previous Red Hat release……………..3
Automated migration from previous Red Hat release…………………………….4
Migration from another platform………………………………………………………….4
Choosing an upgrade strategy………………………………………………………………..4
Assessing your current deployment…………………………………………………………5
Evaluate RPMmanaged
files……………………………………………………………..5
Evaluate nonRPM
managed files………………………………………………………6
Custom drivers and kernel modules……………………………………………………7
Planning your migration………………………………………………………………………….7
Step 1: Define a repeatable customization change set………………………….7
Step 2: Educate user community in advance……………………………………….8
Step 3: Implement a controlled test migration………………………………………8
Step 4: Choose migration timing…………………………………………………………8
Implementing your migration…………………………………………………………………..9
Back up current systems……………………………………………………………………9
Roll out migration………………………………………………………………………………9
Capture issues for future planning………………………………………………………9
Additional references……………………………………………………………………………..9
Migrating to Red Hat Enterprise Linux 4: Upgrading to the latest Red Hat release 2…