Trying CloudStack

[hossein zabolzadeh]

Hi there.
Is there any online website to try the cloudstack freely?
Or is there any free ready-to-go virtual appliance with pre-configured and
pre-installed cloudstack?
I can not install the cloudstack on my ubuntu 12.04 server.
Please help me if there is exist a solution other than installing the
cloudstack from scratch!
Thanks in advance.