The configuration management system are born in order to lower the burden of administering a bunch of servers and to increase the profitability of the work of the system administrator. But what happens with the increase of the administered nodes and the extensiveness of the administration's formulas?

In order to do not get lost into the complexity of rules and exceptions, the life of the system administration could be eased by the adoption of an external node classifier system that could bring clarity and concision.

As example I will show how to easy the administration of a saltstack infrastructure with reclass, a ENC software compatible also with Puppet and Ansible.