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SUSE Linux Enterprise Server 15

Upgrade Guide

This book guides you through upgrades and updates of SUSE Linux Enterprise Server. Different approaches are described, for example upgrading from an installation DVD, via network boot, or a running system.

Publication Date: January 14, 2022
About This Guide
Available Documentation
Giving Feedback
Documentation Conventions
Product Life Cycle and Support
1 Upgrade Paths and Methods
1.1 Upgrading versus Fresh Installation
1.2 Supported Upgrade Paths to SLES 15
1.3 Online and Offline Upgrade
2 Life Cycle and Support
2.1 Terminology
2.2 Product Life Cycle
2.3 Module Dependencies and Life Cycles
2.4 Generating Periodic Life Cycle Report
2.5 Support Levels
2.6 Registering and Deregistering Machines with SUSEConnect
2.7 Identifying the SLE Version
3 Preparing the Upgrade
3.1 Make Sure the Current System Is Up-To-Date
3.2 Read the Release Notes
3.3 Make a Backup
3.4 Listing Installed Packages and Repositories
3.5 Upgrading from SUSE Linux Enterprise Server 11 SP4
3.6 Shut Down Virtual Machine Guests
3.7 Adjusting your SMT client setup
3.8 Disk Space
3.9 Changes in AutoYaST Profiles from SLE 12 to 15
3.10 Upgrading a Subscription Management Tool (SMT) Server
3.11 Temporarily Disabling Kernel Multiversion Support
3.12 Upgrading on IBM Z
3.13 IBM POWER: Starting an X Server
4 Upgrading Offline
4.1 Conceptual Overview
4.2 Starting the Upgrade from an Installation Medium
4.3 Starting the Upgrade from a Network Source
4.4 Upgrading SUSE Linux Enterprise
4.5 Upgrading with AutoYaST
4.6 Upgrading with SUSE Manager
4.7 Updating Registration Status after Rollback
4.8 Registering Your System
5 Upgrading Online
5.1 Conceptual Overview
5.2 Service Pack Migration Workflow
5.3 Canceling Service Pack Migration
5.4 Upgrading with the Online Migration Tool (YaST)
5.5 Upgrading with Zypper
5.6 Upgrading with Plain Zypper
5.7 Rolling Back a Service Pack
5.8 Upgrading with SUSE Manager
5.9 Upgrading from openSUSE Leap to SUSE Linux Enterprise Server
6 Backports of Source Code
6.1 Reasons for Backporting
6.2 Reasons against Backports
6.3 The Implications of Backports for Interpreting Version Numbers
6.4 Checking for Fixed Bugs and Backported Features
A GNU Licenses
A.1 GNU Free Documentation License
List of Examples
3.1 List with df -h

Copyright © 2006– 2022 SUSE LLC and contributors. All rights reserved.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or (at your option) version 1.3; with the Invariant Section being this copyright notice and license. A copy of the license version 1.2 is included in the section entitled GNU Free Documentation License.

For SUSE trademarks, see https://www.suse.com/company/legal/. All other third-party trademarks are the property of their respective owners. Trademark symbols (®, ™ etc.) denote trademarks of SUSE and its affiliates. Asterisks (*) denote third-party trademarks.

All information found in this book has been compiled with utmost attention to detail. However, this does not guarantee complete accuracy. Neither SUSE LLC, its affiliates, the authors nor the translators shall be held liable for possible errors or the consequences thereof.

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