Can class definitions contain class declarations?

Class definitions in Puppet can indeed contain class declarations. This allows one to structure and organize Puppet code in a modular and reusable way. When you declare a class within another class, it enables better encapsulation and management of configurations, enhancing maintainability.

By allowing class declarations within class definitions, Puppet supports nested configurations, where a parent class may include various child classes to set up resources systematically. This promotes a clear hierarchy and separation of concerns, making it easier to manage complex infrastructures.

Additionally, this design simplifies the application of configuration by enabling the reuse of classes across different parts of your Puppet manifests. It encourages a modular approach, and you can build higher-level classes that incorporate multiple lower-level classes, fostering better code organization overall.