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 (Stand-Alone) 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).