Upgrading

This section describes the upgrade and migration options available from previous versions of BMC Discovery. BMC Discovery 25.2 (15.0) is supported on Oracle Linux 9.

Before you begin

Back up before upgrading

The upgrade to BMC Discovery 25.2 is fully tested and supported, and from previous releases running on Red Hat Enterprise Linux 7 or CentOS 7 is more significant than previous upgrades. The upgrade is complex, and involves a change of two major versions: from Red Hat Enterprise Linux 7 or CentOS 7 to Oracle Linux 9. During the upgrade, the BMC Discovery product is uninstalled and then reinstalled, if for any reason, the upgrade fails at that time, the BMC Discovery product cannot resolve any upgrade issues.

Before you upgrade, you should back up the appliance, or for clusters, each cluster member. Use the SSH or Windows Share backup method.

If you are using a virtual appliance, you should shutdown and take a snapshot of the virtual machine. For a cluster of virtual appliances, you should shutdown all the virtual machines at the same time and snapshot them at the same time. For example, if you are using VMware, use the vSphere Client to shutdown the virtual machines and take the snapshot.

Upgrade and migration overview

To summarize the upgrade paths and outcomes:

You can upgrade to BMC Discovery 25.2 (15.0) running on Oracle Linux 9 from BMC Discovery 23.3 and later running on Oracle Linux 9.
You can also upgrade to BMC Discovery 25.2 (15.0) running on Oracle Linux 9 from BMC Discovery running on CentOS 7 or Red Hat Enterprise Linux (RHEL) 7.
You can also migrate to BMC Discovery 25.2 (15.0). Migration involves backing up the old appliance and restoring to a new appliance running on Oracle Linux 9.

This diagram show the upgrade paths available.

Upgrade25.2.png

Before you upgrade, we recommend that you back up the appliance, or for clusters, each appliance. If you are using a virtual appliance or a cluster of virtual appliances, you should shut down the virtual appliance, take a snapshot, and restart.

Note

When upgrading to BMC Discovery 25.2 (15.0), we strongly recommend that you upgrade by using your existing architecture and testing version 25.2 (15.0) in a known configuration.

Supported upgrade versions

Upgrades to BMC Discovery 25.2 (15.0) are formally tested and supported from the following versions of BMC Discovery, and their patches:

24.3 (14.1)
24.2 (14.0)
24.1 (13.2)
23.3 (13.0)
23.1 (12.8)

The formally tested and supported upgrade paths are listed above.

Change of supported OS for BMC Discovery Outpost

The minimum supported version of the OS for the BMC Discovery Outpost is Windows Server 2016. Before upgrading your BMC Discovery Outposts you must upgrade any BMC Discovery Outpost hosts to Windows Server 2016 and later.