code: def start_monitor(self):
          
          stdout_file, stderr_file = self.new_log_files("monitor")
          process_info = ray.services.start_monitor(
              self._redis_address,
              stdout_file=stdout_file,
              stderr_file=stderr_file,
              autoscaling_config=self._ray_params.autoscaling_config,
              redis_password=self._ray_params.redis_password)
          assert ray_constants.PROCESS_TYPE_MONITOR not in self.all_processes
          self.all_processes[ray_constants.PROCESS_TYPE_MONITOR] = [process_info]
docs: Start the monitor.