code: def execute(self):
          
          cluster_name = self.params.cluster
          creator = make_creator(self.params.config,
                                 storage_path=self.params.storage)
          try:
              cluster = creator.load_cluster(cluster_name)
          except (ClusterNotFound, ConfigurationError) as e:
              log.error("Cannot load cluster `%s`: %s", cluster_name, e)
              return os.EX_NOINPUT
          if not self.params.yes:
              confirm_or_abort(
                  "Do you want really want to pause cluster `{cluster_name}`?"
                  .format(cluster_name=cluster_name),
                  msg="Aborting upon user request.")
          print("Pausing cluster `%s` ..." % cluster_name)
          cluster.pause()
docs: Pause the cluster if it is running.