Table of Contents
Rudder provides a simple way to add common and reusable variables in either plain Directives, or techniques created using the Technique editor: 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 the Technique Editor: ${rudder_parameters.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…
Rudder also provides system variables that contain information about nodes and their policy server. You can use them like user defined parameters.
The information about a Node:
- ${rudder.node.id} returns the Rudder generated id of the Node
- ${rudder.node.hostname} returns the hostname of the Node
- ${rudder.node.admin} returns the administrator login of the Node
The information about a Node's policy server.
- ${rudder.node.policyserver.id} returns the Rudder generated id of the Policy Server
- ${rudder.node.policyserver.hostname} returns the hostname of the Policy Server
- ${rudder.node.policyserver.admin} returns the administrator login of the Policy Server
