You can upgrade a Novell® Open Enterprise (OES) 2 Linux (or later) cluster to OES 2 SP2 Linux. This section describes the upgrade process and how to manage the temporarily mixed cluster during the upgrade.
Section 4.1, Requirements for Upgrading Clusters
Section 4.2, Upgrading OES 2 Clusters (Rolling Cluster Upgrade)
Section 4.3, Upgrade Issues for OES 2 SP2