old_contents: """One-line documentation for backend_helper module.
  
  """
  
  from taskflow.jobs import backends as job_backends
  from taskflow.persistence import backends as persistence_backends
  
  # Default host/port of ZooKeeper service.
  ZK_HOST = '104.197.150.171:2181'
  
  # Default jobboard configuration.
  JB_CONF = {
      'hosts': ZK_HOST,
      'board': 'zookeeper',
      'path': '/taskflow/dev',
  }
  
  # Default persistence configuration.
  PERSISTENCE_CONF = {
      'connection': 'zookeeper',
      'hosts': ZK_HOST,
      'path': '/taskflow/persistence',
  }
  
  
  def default_persistence_backend():
      return persistence_backends.fetch(PERSISTENCE_CONF)
  
  
  def default_jobboard_backend(name):
      return job_backends.fetch(name,
                                JB_CONF,
                                persistence=default_persistence_backend())
  
new_contents: """One-line documentation for backend_helper module.
  
  """
  
  from taskflow.jobs import backends as job_backends
  from taskflow.persistence import backends as persistence_backends
  
  # Default host/port of ZooKeeper service.
  ZK_HOST = '104.197.10.180:2181'
  
  # Default jobboard configuration.
  JB_CONF = {
      'hosts': ZK_HOST,
      'board': 'zookeeper',
      'path': '/dev/jobs',
  }
  
  # Default persistence configuration.
  PERSISTENCE_CONF = {
      'connection': 'zookeeper',
      'hosts': ZK_HOST,
      'path': '/taskflow/persistence',
  }
  
  
  def default_persistence_backend():
      return persistence_backends.fetch(PERSISTENCE_CONF)
  
  
  def default_jobboard_backend(name):
      return job_backends.fetch(name,
                                JB_CONF,
                                persistence=default_persistence_backend())
  
subject: update zookeeper configuration