Discrete control of computing systems administration: A programming language supported approach

We address the problem of using Discrete Controller Synthesis for the administration of Computing Systems, following an approach supported by a programming language. We present a mixed imperative/declarative programming language, where declarative contracts are enforced upon imperatively described behaviors. Its compilation is based on the notion of supervisory control of discrete event systems. It targets the programming of closed-loop reconfiguration controllers in computing systems. We apply our method to the problem of coordinating several administration loops in a data center (number of servers, repair, and local processor frequencies): we formulate it as an invariance controller synthesis problem.