The Scaling Controller feature manages Liberty clusters by starting and stopping servers based on Scaling Policy.
To enable the Scaling Controller feature, add the following element declaration inside the featureManager element in your server.xml file:
<feature>scalingController-1.0</feature>
If you are developing a feature that depends on the Scaling Controller feature, include the following item in the Subsystem-Content header in the feature manifest file for your new feature:
com.ibm.websphere.appserver.scalingController-1.0; type="osgi.subsystem.feature"