This topic remove a server from a cluster without deleting the server
from the domain.
If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
In the
Administration Console, expand Environment and
select Servers.
Click the name
of the server you want to remove from a cluster.
Select the
Configuration tab, then select
General.
Change the
Cluster field to (Standalone) to remove it from
the cluster.
Click Save.
To activate these changes, in the Change Center of the Administration Console, click Activate Changes. Not all changes take effect immediately—some require a restart (see Use the Change Center).