After a failed upgrade, use this procedure to downgrade or revert back to the previous release of Avaya Common Services.
Before you begin
Ensure that you have:
The original solution configuration spreadsheet used to install the previous release to which you are reverting back.
Procedure
Run ccm uninstall --force to uninstall the cluster and services as required.
If the cluster uninstall fails, contact Avaya support personnel for assistance.
In vCenter, revert Cluster Control Manager to the snapshot image taken before the upgrade.
Log in to the restored snapshot of Cluster Control Manager and run the ccm uninstall-cluster --force command.
If the node removal fails, contact Avaya support personnel for assistance. Manual cleanup might be required.
On Cluster Control Manager, type screen to run the installation in the background.
Using the original solution configuration spreadsheet, which is compatible with the release you are reverting back to, run the ccm install <solution spreadsheet name>.xlsx command.
Restore application data using the information in your solution documentation.
