title: Rabbit MQ fails to start
body: <p>I have finished installing RabbitMQ using the following RPM</p>
  
  <p><a href="http://www.rabbitmq.com/releases/rabbitmq-server/v2.7.1/rabbitmq-server-2.7.1-1.noarch.rpm" rel="noreferrer">http://www.rabbitmq.com/releases/rabbitmq-server/v2.7.1/rabbitmq-server-2.7.1-1.noarch.rpm</a></p>
  
  <p>i installed it like so :</p>
  
  <pre><code>$ wget \ http://www.rabbitmq.com/releases/rabbitmq-server/v2.7.1/rabbitmq-server-2.7.1-1.noarch.rpm
  $ rpm --nodeps -Uvh rabbitmq-server-2.7.1-1.noarch.rpm
  </code></pre>
  
  <p>the reason i used --nodeps was because i installed erlang from source and the rpm will try looking for an erlang.rpm dependency ignoring the one on the system.</p>
  
  <p>When i try to start the Rabbit MQ server i get this error :</p>
  
  <pre><code>/usr/lib/rabbitmq/bin/rabbitmq-server: line 73: /var/lib/rabbitmq/mnesia/rabbit@
  vz129.pid: Permission denied
  {"init terminating in do_boot",{undef,[{rabbit_prelaunch,start,[]},{init,start_i
  t,1},{init,start_em,1}]}}
  </code></pre>
  
  <p>Im using CentOS release 4.9 (Final).</p>
  
  <p>Any help is appreciated.</p>