Chapter 7: Controlling Task Conditions
Ansible is a system for running tasks on one or more hosts, and ensuring that operators understand whether changes have occurred (and indeed whether any issues were encountered). As a result, Ansible tasks result in one of four possible statuses: ok, changed, failed, or skipped. These statuses perform a number of important functions.
From the perspective of an operator running an Ansible playbook, they provide an overview of the Ansible run that has been completed—whether anything changed or not and whether there were any failures that need addressing. In addition, they determine the flow of the playbook—for example, if a task results in a changed status, we might want to perform a restart of the service, but otherwise leave it running. Ansible possesses all the necessary functions to achieve this.
Similarly, if a task results in a failed status, the default behavior of Ansible is not...
