The cluster expansion feature enables you to add the platform nodes to any existing old and new cluster without incurring any data loss by using the vRealize Network Insight Appliance Commands.
About this task
Ensure that you take a backup of all the Platform nodes before you create clusters. Refer to the VMware best practices to take the backup of virtual machines (like VMware VDP using VADP). Restore the Platform nodes from the backup if there is an unrecoverable error.
For example, if you have an existing cluster with three nodes, you can add 4 more nodes to it without any data loss.
- Perform SSH to the platform1 node by using consoleuser.
- Before the expansion operation, run the
cluster expandcommand to validate the following:
It is a platform1 node and cluster setup.
The previous cluster operation, which can be creation or expansion, is completed without any errors.
- After the validation is successful, enter the following details:
Number of new nodes to be added to cluster
IP Address and support user details of new nodes
The IP Address and the SSH connectivity are validated before proceeding to the next step.
The cluster expansion takes approximately 30–45 minutes to complete. During this time, the application might not be accessible.