title: Openstack Installation
body: <p>I have tried using devstack, try to install openstack folsom. However, I can not install it with an error.</p>
  
  <pre><code>Creating /usr/local/lib/python2.7/dist-packages/horizon.egg-link (link to .)
  horizon 2012.2.2 is already the active version in easy-install.pth
  
  Installed /opt/stack/horizon
  Processing dependencies for horizon==2012.2.2
  error: Installed distribution python-keystoneclient 0.1.3 conflicts with requirement python-keystoneclient&gt;=0.2
  ++ failed
  ++ local r=1
  ++ set +o xtrace
  </code></pre>
  
  <p>I'm doing the installation on Ubuntu 12.04 Server.</p>