Hands-On Enterprise Automation with Python.

Creating your first playbook

Now the magic party can begin. An Ansible playbook is a set of commands (called tasks) that need to be executed in order, and it describes the desired state of the hosts after execution finishes. Think of a playbook as a manual that contains a set of instructions for how to change the state of an infrastructure; each instruction depends on many built-in Ansible modules to perform the tasks. For example, you may have a playbook that is used to build web applications that consist of SQL servers, to act as backend databases and nginx web servers. The playbook will have a list of tasks to perform against each group of servers, to change their states from No-Exist to Present, or to Restarted or Absent, if you want ...