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documentation.suse.com / SUSE Linux Enterprise Micro Documentation / Upgrade Guide / Upgrading the system
Applies to SUSE Linux Enterprise Micro 5.3

3 Upgrading the system

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

SUSE releases a 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:

  • Canceling is possible until you reboot your system.

  • Simple recovery if there is an error.

  • Possible rollback via system tools—no backup or restore needed.

  • Use of all active repositories.

3.1 Upgrading to a new release

Important: Upgrading to a new release and the networking service

When you perform an upgrade from previous releases, the default network framework remains the same. Since SLE Micro 5.3, the default networking service is NetworkManager. A new installation of SLE Micro 5.3 is recommended, but if needed, you can switch from wicked to NetworkManager as described in Procedure 6.1, “Switching from wicked to NetworkManager”. However, automated migration from wicked to NetworkManager or the conversion of the wicked configuration is not supported. SUSE also cannot guarantee full feature parity when switching to NetworkManager.

If your system is registered with the SUSE Customer Center, make sure to have an Internet connection during the following procedure:

Procedure 3.1: 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.

If your system is not registered, proceed as follows:

Procedure 3.2: Upgrading an unregistered system
  1. Change the URL of the update repositories to point to the 5.3.

  2. Run the following command:

    # transactional-update dup

3.1.1 Extensions during upgrade

The SUSE Linux Enterprise Live Patching and SUSE Package Hub might get updated during the upgrade procedure. See the graph below to check whether the extensions will be updated in your case.

Upgrading extensions
Figure 3.1: Upgrading extensions

3.2 Reverting the migration process

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 3.3, “System rollback”.