private void addClusterControllerComponentsForThisCluster(ClusterControllerContainerCluster clusterControllers,
                                                                  ContentCluster contentCluster) {
            int index = 0;
            for (var container : clusterControllers.getContainers()) {
                if ( ! hasClusterControllerComponent(container))
                    container.addComponent(new ClusterControllerComponent());
                container.addComponent(new ClusterControllerConfigurer(contentCluster, index++, clusterControllers.getContainers().size()));
            }

        }
Returns of memory reserved on a host. Memory is reserved for the jvm if the cluster is combined
config-model/src/main/java/com/yahoo/vespa/model/content/cluster/ContentCluster.java