title: AWS - Creating Read Replica of a Read Replica
body: <p>We are migrating our MySql instance from version 5.5 in US to 5.6 in Sydney.
  To reduce downtime I want to do following:</p>
  
  <ol>
  <li>Create Readonly Replica in US</li>
  <li>Upgrade it to 5.6</li>
  <li>Enable automated Backup as it's required to replicate the instance</li>
  <li>PROBLEM: When I'm trying to create a replica of a replica(selecting Sydney as destination region) I get this: "<em>The source DB instance specified needs to be non read replica</em>"</li>
  </ol>
  
  <p>If I understand this <a href="http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ReadRepl.html" rel="nofollow">http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ReadRepl.html</a> correctly it should be perfectly fine for me to create a replica of a replica, however I'm running out of ideas why it doesn't let me... Should I make it non-readonly?</p>
  
  <p><strong>UPDATE:</strong> It looks like you can create a Replica(5.6) of a Read Replica(5.6) in the same region, however I still have no luck creating a readReplica from a readReplica in another region.</p>