title: RabbitMQ, Erlang: How to "make sure the erlang cookies are the same"
body: <p>I am using RabbitMQ with Grails, and a problem cropped up this morning.  When I run <code>rabbitmqctl</code> status it tells me:</p>
  <pre><code>C:\Users\BuildnTest2&gt;rabbitmqctl status
  Status of node 'rabbit@BUILDNTEST2-PC' ...
  Error: unable to connect to node 'rabbit@BUILDNTEST2-PC': nodedown diagnostics:
  - nodes and their ports on BUILDNTEST2-PC: [{rabbit,49164},
                                          {rabbitmqctl27693,49286}]
  - current node: 'rabbitmqctl27693@BuildnTest2-PC'
  - current node home dir: C:\Users\BuildnTest2
  - current node cookie hash: cSYB8tsT4mGGZHSUGQi08w==
  </code></pre>
  <p>When I go to the Rabbit <a href="http://www.rabbitmq.com/troubleshooting.html" rel="nofollow noreferrer">troubleshooting page</a> they say:</p>
  <pre><code>then you should make sure the Erlang cookies are the same.
  </code></pre>
  <p>What does this mean and how is it accomplished?</p>
  <p>Googling found this forum <a href="http://lists.rabbitmq.com/pipermail/rabbitmq-discuss/2011-January/010806.html" rel="nofollow noreferrer">thread</a> which claims to have instructions to solving this problem, but alas it just redirects back to the rabbit site where there is no answer.</p>