SeriesInformation ; HEPiX Spring 2015 at Oxford University, HEPiX Spring 2015, Oxford, Oxford University, UK, 23 Mar 2015 - 27 Mar 2015 ; (2015). ; Abstract ; Marionette Collective, also known as MCollective, is a framework for building server orchestration, monitoring, and parallel job execution. MCollective uses a modern "Publish Subscribe Middleware" for a scalable and fast execution environment. It is a powerful tool in combination with Puppet, due to the good integration. However it can be a challenging task to configure and deploy MCollective in a reliable and secure way. In this talk, we will give an overview of our DESY MCollective setup, the design decisions, intended use and encountered problems.