Yaybu is a push based configuration management tool written in Python with the goal of helping you tame your servers. You describe your infrastructure in a simple and flexible YAML-like language and Yaybu works out what needs to happen to deploy your updates.
All the documentation is available on http://docs.yaybu.com.
Yaybu is very new software, please subscribe to the yaybu-dev mailing list and let us know if you are using it, we'd love to hear from you. You can find the mailing list at http://lists.yaybu.com.
You can also find us in #yaybu on irc.oftc.net.