1. A system comprising non-transitory computer-readable storage media encoded with license-manager code, said license-manager code being configured to, when executed by a processor: select a first managed node of plural managed nodes, said first managed node having a first computing resource; select a first central-management product for reconfiguring said managed nodes, said first central-management product including software executing on a central-management server coupled to said managed nodes via a network; determine a first relevant licensing unit of said first computing resource for said first central-management product, said first relevant licensing unit being relevant to the determination of license fees associated with managing said first managed node using said first central-management product; interact with said first managed node to identify a first quantity of said first relevant computing resource available on said first managed node in terms of said first relevant licensing unit; and change a number of active licenses for managing said first managed node using said central-management product.