private List<Slobrok> createSlobroksOn(ClusterControllerContainerCluster clusterControllers, DeployState deployState) {
        List<Slobrok> slobroks = new ArrayList<>();
        for (ClusterControllerContainer clusterController : clusterControllers.getContainers()) {
            Slobrok slobrok = new Slobrok(this, clusterController.index(), deployState.featureFlags());
            slobrok.setHostResource(clusterController.getHostResource());
            slobroks.add(slobrok);
            slobrok.initService(deployState);
        }
        return slobroks;
    }
Returns the log server for this, or null if none
config-model/src/main/java/com/yahoo/vespa/model/admin/Admin.java