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Applies to SUSE Linux Enterprise Micro 5.1

4 Upgrading SLE Micro Edit source

SUSE offers a command-line tool to upgrade a running system to a new version. The tool provides support for rollback to an older release. This chapter explains how to upgrade your system step by step.

4.1 Conceptual overview Edit source

SUSE releases new version of SLE Micro at regular intervals. To make it easy for customers to migrate to a new minor version and minimize downtime, SUSE supports migrating online while the system is running.

SLE Micro uses transactional updates to upgrade from one version to the next. This has the following advantages:

  • The system is always in a defined state until the first RPM is updated.

  • Canceling is possible until the first RPM is updated.

  • Simple recovery if there is an error.

  • It is possible to do a rollback via system tools—no backup or restore needed.

  • Use of all active repositories.

4.2 Upgrading to a new release Edit source

Note
Note: SUSE Customer Center and Internet connection

If the system you want to upgrade is registered with the SUSE Customer Center, make sure to have an Internet connection during the following procedure.

Proceed as described in Procedure 4.1, “Upgrade to a newer version” if your system is registered. If your system system is not registered, change the repositories to point to the 5.1 and run:

root # transactional-update dup
Procedure 4.1: Upgrade to a newer version
  1. The upgrade procedure is performed by calling the transactional-update:

       transactional-update migration
  2. A new snapshot is created.

  3. Current repositories are refreshed.

  4. A list of available migration targets is displayed. Enter a number.

  5. A list of packages to be installed or updated is displayed. Press y to continue with the upgrade procedure.

  6. To complete the upgrade, reboot your system and boot into the target version.

4.3 Reverting the migration process Edit source

If a new release does not work for you, SLE Micro supports reverting the system to the state before the migration process was started by using the transactional-update rollback command.

The detailed procedure for a system rollback is described in Section 2.3, “System rollback”.

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