code: def __init__(self, *args, **kwargs):
      Thread.__init__(self)
      NodeUpdater.__init__(self, *args, **kwargs)
      self.exitcode = -1
  
imports: import logging
  import os
  import subprocess
  import time
  import traceback
  from threading import Thread
  import click
  from ray._private.usage import usage_constants, usage_lib
  from ray.autoscaler._private import subprocess_output_util
  from ray.autoscaler._private.cli_logger import cf, cli_logger
  from ray.autoscaler._private.command_runner import AUTOSCALER_NODE_START_WAIT_S, ProcessRunnerError
  from ray.autoscaler._private.constants import LABELS_ENVIRONMENT_VARIABLE, RESOURCES_ENVIRONMENT_VARIABLE
  from ray.autoscaler._private.event_system import CreateClusterEvent, global_event_system
  from ray.autoscaler._private.log_timer import LogTimer
  from ray.autoscaler.tags import STATUS_SETTING_UP, STATUS_SYNCING_FILES, STATUS_UP_TO_DATE, STATUS_UPDATE_FAILED, STATUS_WAITING_FOR_SSH, TAG_RAY_FILE_MOUNTS_CONTENTS, TAG_RAY_NODE_STATUS, TAG_RAY_RUNTIME_CONFIG
label_desc: Use image node_id 1 to create a new NodeUpdaterThread object from inherited base classes: NodeUpdater, Thread with example: obj = NodeUpdaterThread()