Restarting SQL Server Agent on a cluster installation I've just enabled the mail profile in SQL Server Agent and I need to restart the service for it to take affect but the Agent is running as part of a SQL Server cluster and I don't want the cluster manager to think there is a problem and fail-over all of the services to the other node.

What is the correct way to restart the SQL Server Agent on a SQL Server instance that is clustered?
Set the resource/service for SQL Agent as offline via the failover cluster manager, and then back online.