code: def reset_hba(self):
          
          status = self.get_status()
          if status == 'not-initialized':
              raise ClusterError(
                  'cannot modify HBA records: cluster is not initialized')
  
          pg_hba = os.path.join(self._data_dir, 'pg_hba.conf')
  
          try:
              with open(pg_hba, 'w'):
                  pass
          except IOError as e:
              raise ClusterError(
                  'cannot modify HBA records: {}'.format(e)) from e
docs: Remove all records from pg_hba.conf.