Mastering Ansible

Chapter 1
At first glance, one might expect at least var_name and task_var_name to render
correctly. We can clearly see task_var_name being defined before its use. However,
armed with our knowledge that playbooks are parsed in their entirety before
execution, we know better:
As we can see, the only variable name that is properly rendered is var_name, as it
was defined as a static play variable.
Module transport and execution
Once a playbook is parsed and the hosts are determined, Ansible is ready to execute
a task. Tasks are made up of a name (optional, but please don't skip it), a module
reference, module arguments, and task control keywords. A later chapter will cover
task control keywords in detail, so we will only concern ourselves with the module
reference and arguments.
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