1. A method comprising: providing a network interface to a set of networked machines; accessing, by a processor, a single network-management command from a library of command modules, the library of command modules comprising: a set of core network-management modules, and a set of user-defined network-management modules; transmitting, by the processor, via a secure channel, the single network-management command to the set of networked machines via a command interface using the network interface, wherein the single network-management command controls multiple machines in the set of networked machines to perform a same operation; and communicating certificates to the set of networked machines to establish a secure channel to the set of networked machines.