if len(clusterConfigs) == 0 {
		// not loaded from file file, build directly from provided kubeconfigs and topology flag maps
		return s.clusterConfigsFromFlags()
	}

	return s.clusterConfigsFromFile()
}

func (s *Settings) clusterConfigsFromFlags() ([]cluster.Config, error) {
	if len(s.KubeConfig) == 0 {
		// flag-based, but no kubeconfigs, get kubeconfigs from environment