title: Celery cannot find a worker
body: <p>I'm using celery with such configuration</p>
  
  <pre><code>default_exchange = Exchange('default', type='direct')
  latest_exchange = Exchange('latest', type='direct')
  
  shared_celery_config = {
      'BROKER_URL': 'redis://localhost:6379/0',
      'CELERY_RESULT_BACKEND': 'redis://localhost:6379/0',
      'CELERY_DEFAULT_EXCHANGE': 'default',
      'CELERY_DEFAULT_ROUTING_KEY': 'default',
      'CELERY_DEFAULT_QUEUE': 'default',
      'CELERY_QUEUES': (
          Queue('default', default_exchange, routing_key='default'),
          Queue('latest', latest_exchange, routing_key='latest'),
      ),
  }
  
  celery = Celery('tasks', config_source=shared_celery_config)
  </code></pre>
  
  <p>But when I'm creating a task none of the worker is consuming it and nothing happens. I  start workers with:
  <code>celery worker -A tasks --loglevel=debug --hostname=worker1</code>. I can see them from <code>ps aux | grep celery</code> output, but when executing some command to get statistics like <code>celery -A tasks status</code> I get following error message
  <strong><code>Error: No nodes replied within time constraint.</code></strong>. Therefore all tasks are in <em>PENDING</em> status. I believe this is some misconfiguration, but can't figure out what's wrong and how to debug such a thing. Any advise would be very helpful</p>