title: Rails and PostgreSQL: Role postgres does not exist
body: <p>I have installed PostgreSQL on my Mac OS Lion, and am working on a rails app. I use RVM to keep everything separate from my other Rails apps.</p>
  
  <p>For some reason when I try to migrate the db for the first time rake cannot find the postgres user. I get the error</p>
  
  <pre><code> FATAL:  role "postgres" does not exist
  </code></pre>
  
  <p>I have pgAdmin so I can clearly see there is a postgres user in the DB - the admin account in fact - so I'm not sure what else to do.</p>
  
  <p>I read somewhere about people having issues with PostgreSQL because of which path it was installed in, but then I don't think I would have gotten that far if it couldn't find the db.</p>