Do you want to try out the latest Eucalyptus Cloud? What you need is an extra system with CentOS 6.5 or RHEL6.5 installed. In that sysyem as root just run the following command. It will install all required packages and setup a cloud in a box environment for you.
bash <(curl -s https://raw.githubusercontent.com/eucalyptus/eucalyptus-cookbook/master/faststart/cloud-in-a-box.sh)
After the installation is done, you can use latest euca2ools (written in Python) toolchain to control the cloud.
If you have any suggestion please comment in this post.