code: def get_head_node_ip(config_file, override_cluster_name):
      
  
      config = yaml.load(open(config_file).read())
      if override_cluster_name is not None:
          config["cluster_name"] = override_cluster_name
  
      provider = get_node_provider(config["provider"], config["cluster_name"])
      try:
          head_node = _get_head_node(config, config_file, override_cluster_name)
          if config.get("provider", {}).get("use_internal_ips", False) is True:
              head_node_ip = provider.internal_ip(head_node)
          else:
              head_node_ip = provider.external_ip(head_node)
      finally:
          provider.cleanup()
  
      return head_node_ip
docs: Returns head node IP for given configuration file if exists.