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Learning Ansible 2

Learning Ansible 2 - Second Edition

By : Fabio Alessandro Locati
2 (1)
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Learning Ansible 2

Learning Ansible 2

2 (1)
By: Fabio Alessandro Locati

Overview of this book

Ansible is an open source automation platform that assists organizations with tasks such as configuration management, application deployment, orchestration, and task automation. With Ansible, even complex tasks can be handled easier than before. In this book, you will learn about the fundamentals and practical aspects of Ansible 2 by diving deeply into topics such as installation (Linux, BSD, and Windows Support), playbooks, modules, various testing strategies, provisioning, deployment, and orchestration. In this book, you will get accustomed with the new features of Ansible 2 such as cleaner architecture, task blocks, playbook parsing, new execution strategy plugins, and modules. You will also learn how to integrate Ansible with cloud platforms such as AWS. The book ends with the enterprise versions of Ansible, Ansible Tower and Ansible Galaxy, where you will learn to interact Ansible with different OSes to speed up your work to previously unseen levels By the end of the book, you’ll able to leverage the Ansible parameters to create expeditious tasks for your organization by implementing the Ansible 2 techniques and paradigms.
Table of Contents (11 chapters)
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Testing modules


Testing is often undervalued due to lack of understanding of its purpose and the benefits it can bring to the business. Testing modules is as important as testing any other part of the Ansible playbook because a small change in a module can break your entire playbook. We will take an example of the Python module that we wrote in the first section of this chapter and write an integration test using Python's nose test framework. Unit tests are also encouraged, but for our scenario where we check if a user exists remotely, an integration test makes more sense.

Note

nose is a Python test framework. For more information, visit https://nose.readthedocs.org/en/latest/.

To test the module, we convert our previous module into a Python class so that we can directly import the class in our test, and run only the main logic of the module. The following code shows the library/check_user_py3.py restructured module, which will check whether a user exists on a remote host:

    #!/usr/bin/env...
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Learning Ansible 2
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