code: def _create_cluster_connection(self, node):
          
          LOGGER.debug('Creating a cluster connection to %s:%s', node.ip,
                       node.port)
          conn = _Connection(
              node.ip,
              node.port,
              0,
              self._read,
              self._on_closed,
              self.io_loop,
              cluster_node=True,
              read_only='slave' in node.flags,
              slots=node.slots)
          self.io_loop.add_future(conn.connect(), self._on_connected)
docs: Create a connection to a Redis server.
  
          :param node: The node to connect to
          :type node: tredis.cluster.ClusterNode