no-herd klieber@gentoo.org Cfengine, or the configuration engine is an autonomous agent and a middle to high level policy language for building expert systems which administrate and configure large computer networks. Cfengine uses the idea of classes and a primitive intelligence to define and automate the configuration and maintenance of system state, for small to huge configurations. Cfengine is designed to be a part of a computer immune system, and can be thought of as a gaming agent. It is ideal for cluster management and has been adopted for use all over the world in small and huge organizations alike.