2 Prerequisites

Set up the required prerequisites to upgrade from Oracle CNE Release 1 to Release 2.

The upgrade is performed on an Oracle Linux host that's outside the Release 1 cluster. This host must have network access to the Kubernetes nodes in the Release 1 cluster.

Important:

The upgrade must not be performed on any of the Release 1 Kubernetes nodes. The upgrade steps must be performed on a host outside the cluster.

Before you begin, identify any OS Customizations in the Release 1 cluster. If you have OS customizations that can't be set up using a configuration file, you might need to use Oracle Container Host for Kubernetes Image Builder to build a custom image to use during the upgrade.

To prepare for the upgrade, on an Oracle Linux host, set up:

• The Oracle CNE Command Line Interface (CLI), ocne.

• The Oracle CNE libvirt provider. This is used to create temporary Kubernetes clusters to perform some steps in the upgrade.

• The Kubernetes CLI, kubectl.

• A copy of the Release 1 Kubernetes configuration file, kubeconfig.