Meta parameters are general-purpose parameters available to any resource type, even if not explicitly defined. They can be used for different purposes:
Manage dependencies and resources ordering (more on them in the next section):
before,require,subscribe,notify, andstageManage resources' application policies:
audit(audit the changes done on the attributes of a resource),noop(do not apply any real change for a resource),schedule(apply the resources only within a given time schedule), andloglevel(manage the log verbosity)Add information to a resource:
alias(adds an alias that can be used to reference a resource) andtag(add a tag that can be used to refer to group resources according to custom needs; we will see a usage case later in this chapter in the external resources section)