June 2018
Intermediate to advanced
398 pages
9h
English
Content preview from Hands-On Enterprise Automation with Python
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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 ...
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