What will the value of $server be in the notify resource after executing the node declaration for "webserver.mylabserver.com"?

The value of $server in the notify resource will be "10.0.0.2" based on how Puppet manages facts and node declarations. When a node is declared, Puppet collects facts about the node, including its IP address and hostname.

In this case, the specific node declaration for "webserver.mylabserver.com" corresponds to a resource that is associated with it. Typically, the value of $server is derived from the relevant fact related to the node, often the IP address assigned to it. If the declaration and the associated configuration correctly denote that the IP for "webserver.mylabserver.com" is "10.0.0.2," then this value will be used in the notify resource.

The significance of node declarations is that they help define specific configurations for individual nodes, allowing for tailored behaviors based on their respective facts, such as IP addresses. In this scenario, it is likely established in the Puppet manifests that "webserver.mylabserver.com" has been assigned the IP "10.0.0.2," leading to this value being notified in the specified resource.

Other potential values such as "10.0.0.1," "localhost," or "webserver.mydomain