What is one method for modifying a Puppet class to include dynamic parameters?

Passing parameters during class declaration is a robust method for modifying a Puppet class to include dynamic parameters. This approach allows you to specify values for parameters at the time you declare the class, enabling customization for different environments or conditions dynamically. You can easily change the values without altering the class definition itself, which promotes reuse of the original class with varying configurations.

This method also aligns well with Puppet’s design principles, allowing for a clear understanding of how parameters can influence the behavior of a class based on the context in which it's applied. By passing dynamic parameters at the time of declaration, you can tailor the configuration to suit different deployment scenarios or environments, enhancing flexibility in your Puppet manifests.

Using environment variables would provide a way to inject values, but it is less straightforward and might complicate the visibility of what parameters are being passed into the class. Redefining the class locally may create versions that can lead to maintenance challenges and a lack of clarity in your Puppet code. Relying on Hiera configurations is a powerful feature for managing complexity in data, but it is typically used for managing data outside of the class declaration and doesn’t directly modify the class structure during instantiation.