Landscape is an easy-to-use systems
management and monitoring service that
enables you to manage multiple Ubuntu
machines as easily as one through a
simple Web-based interface.

但是,Landscape不是免费的. RedHat对应的Satellite有一个名为Spacewalk的免费版本,但它在Ubuntu上不起作用. (尝试将Spacewalk移植到Debian,但它看起来还不稳定.)

是否有任何开源替代景观？更好的是,是否有类似Spacewalk的软件适用于基于RedHat和Debian的系统？