Justin Kulesza and I have been using Puppet to manage the configuration of some virtualized servers. Recently, we added some modules that introduced unexpected dependency cycles. As we worked to untangle the complex series of dependencies, it became difficult to keep track of just how everything was connected. In order to make sense of the complex web of chaining relationships, I decided to take advantage of Puppet’s ability to generate DOT graph files of resource relationships. Although it’s still sparsely documented , this option can be specified either on the command line or in puppet.conf.