OpenCHAMI is a cloud-like HPC provisioning and management toolkit for on-premise HPC systems.  The core components of OpenCHAMI provide composable microservices that tailor provisioning and boot operations of each HPC node based on needs of the users, even when those needs are different across the same cluster.  While has been used on large, multi-row HPC systems, all the complexity is opt-in.  Admins with only a few nodes can be up and running in less than five minutes with the same security levels and the exact same APIs available at full Supercomputer scale.