resources := make([]*discovery.Resource, 0)
	efKeys := cp.efw.KeysApplyingTo(networking.EnvoyFilter_CLUSTER)
	hit, miss := 0, 0
	for _, service := range services {
		if service.Resolution == model.Alias {
			continue
		}
		for _, port := range service.Ports {
			if port.Protocol == protocol.UDP {
				continue
			}
			clusterKey := buildClusterKey(service, port, cb, proxy, efKeys)