Rudder provides a simple way to add common and reusable variables in either plain Directives, or ncf-builder created Techniques: the parameters.
The parameters enable the user to specify a content that can be put anywhere, using the following syntax:
- In Directives: ${rudder.param.name} will expand the content of the "name" parameter.
- In ncf Techniques: ${rudder_parameter.name} will do the same
Using this, you can specify common file headers (this is the default parameter, "rudder_file_edit_header"), common DNS or domain names, backup servers, site-specific elements…
