Book Image

Practical Ansible - Second Edition

By : James Freeman, Fabio Alessandro Locati, Daniel Oh
Book Image

Practical Ansible - Second Edition

By: James Freeman, Fabio Alessandro Locati, Daniel Oh

Overview of this book

Ansible empowers you to automate a myriad of tasks, including software provisioning, configuration management, infrastructure deployment, and application rollouts. It can be used as a deployment tool as well as an orchestration tool. While Ansible provides simple yet powerful features to automate multi-layer environments using agentless communication, it can also solve other critical IT challenges, such as ensuring continuous integration and continuous deployment (CI/CD) with zero downtime. In this book, you'll work with the latest release of Ansible and learn how to solve complex issues quickly with the help of task-oriented scenarios. You'll start by installing and configuring Ansible on Linux and macOS to automate monotonous and repetitive IT tasks and learn concepts such as playbooks, inventories, and roles. As you progress, you'll gain insight into the YAML syntax and learn how to port between Ansible versions. Additionally, you'll understand how Ansible enables you to orchestrate multi-layer environments such as networks, containers, and the cloud. By the end of this Ansible book, you'll be well versed in writing playbooks and other related Ansible code to overcome all your IT challenges, from infrastructure-as-a-code provisioning to application deployments and handling mundane day-to-day maintenance tasks.
Table of Contents (21 chapters)
Free Chapter
1
Part 1:Learning the Fundamentals of Ansible
6
Part 2:Expanding the Capabilities of Ansible
12
Part 3:Using Ansible in an Enterprise

Questions

Answer the following questions to test your knowledge of this chapter:

  1. Which command line can be passed down as a parameter to a module?
    1. ansible dbservers -m command "/bin/echo 'hello modules'"
    2. ansible dbservers -m command -d "/bin/echo 'hello modules'"
    3. ansible dbservers -z command -a "/bin/echo 'hello modules'"
    4. ansible dbservers -m command -a "/bin/echo 'hello modules'"
    5. ansible dbservers -a "/bin/echo 'hello modules'"
  2. Which of the following practices is not recommended when you create a custom module and address exceptions?
    1. Design a custom module simply and never provide a traceback to the user, if you can avoid it.
    2. Fail your module code quickly, and verify that you are providing helpful and understandable exception messages.
    3. Only display error messages for the most relevant exceptions, rather than all possible errors.
    4. Ensure that your module documentation is relevant and...