Generation Context

Variable substitution happens when a target step is run on a target host. The step can be in a plan or in a component being installed or already installed on the target host. If there is a state associated with the target host and component, it is used to determine the value of a particular substitution variable. The state can include the following:

• Target component – The component on which to perform operations

• Target host – The current host on which the target step is executing

• Target variable settings source – A collection of name-value pairs that override the default values defined in the component when it is being installed

• Local variables – Any variables in the target step itself, such as those that you have declared in the enclosing block or plan