Central on-prem cluster can be increased from 3 nodes to 5 or 7 by adding nodes. It is not possible to add nodes to single Central on-prem as its not a cluster yet.
If the setup is a 3 node cluster, you can migrate from Airwave and add 2 more nodes to the existing 3 node cluster.
If thats a single node, take Airwave backup and Central backup from System > Backup page on Airwave, set up 3 node COP cluster and restore Central backup. (AirWave full backup is taken as precautionary measures for any rollback if needed).
Sent: Jun 22, 2022 09:39 AM
From: Alex Sharaz
Subject: Aruba Central on-prem build can a cluster be expanded ?
Just reading the Central-on-prem installation guide, and it assumes that you have all the cluster nodes present when you start building the cluster. We have an airwave server hosten on a central read hardware appliance. The assumption was that after COP was built, and data from the Airewave appliance was migrated onto COP we would then add the Airwave box as anothe COP node.
Neither the installation guide nor the user guide mentions increasing/decreasing cluster size ... you must be able to do that in the event a cluster node dies.
Can anyone point me at an appropriate doc about COP cluster management?