title: psql: FATAL: role "vagrant" does not exist
body: <p>I have been trying to set up vagrant but I am getting this error.
  I will list out my installation method. Please suggest changes where you feel they are needed.</p>
  
  <p>-Installed virtual box<br>
  <code>sudo apt-get install virtual box</code></p>
  
  <p>-Downloaded .deb package from vagrant website</p>
  
  <p>-Installed it using<br>
   <code>sudo dpkg -i (package_name)</code></p>
  
  <p>-then I selected the vagrant folder in the fullstack folder and<br>
  <code>vagrant up</code><br>
  <code>vagrant ssh</code></p>
  
  <p>then I did :<br>
  <code>vagrant@vagrant-ubuntu-trusty-32: cd /vagrant/forum
  vagrant@vagrant-ubuntu-trusty-32:/vagrant/forum$ sudo apt-get install postgresql-client-common
  vagrant@vagrant-ubuntu-trusty-32:/vagrant/forum$ sudo apt-get install postgres-xc-client</code></p>
  
  <p>Then finally:<br>
  <code>vagrant@vagrant-ubuntu-trusty-32:/vagrant/forum$ psql
  psql: FATAL:  role "vagrant" does not exist</code></p>