title: ubuntu rabbitmq - Error: unable to connect to node 'rabbit@somename: nodedown
body: <p>I am using celery for django which needs rabbitmq. Some 4 or 5 months back, it used to work well. I again tried using it for a new project and got below error for rabbitmq while listing queues.</p>
  
  <pre><code>Listing queues ...
  Error: unable to connect to node 'rabbit@somename': nodedown
  diagnostics:
  - nodes and their ports on 'somename': [{rabbitmqctl23014,44910}]
  - current node: 'rabbitmqctl23014@somename'
  - current node home dir: /var/lib/rabbitmq
  - current node cookie hash: XfMxei3DuB8GOZUm1vdUsg==
  </code></pre>
  
  <p>Whats the solution? If there is no good solution, can I uninstall and reinstall rabbitmq ?</p>