Book Image

Learn Ansible

By : Russ McKendrick
Book Image

Learn Ansible

By: Russ McKendrick

Overview of this book

Ansible has grown from a small, open source orchestration tool to a full-blown orchestration and configuration management tool owned by Red Hat. Its powerful core modules cover a wide range of infrastructures, including on-premises systems and public clouds, operating systems, devices, and services—meaning it can be used to manage pretty much your entire end-to-end environment. Trends and surveys say that Ansible is the first choice of tool among system administrators as it is so easy to use. This end-to-end, practical guide will take you on a learning curve from beginner to pro. You'll start by installing and configuring the Ansible to perform various automation tasks. Then, we'll dive deep into the various facets of infrastructure, such as cloud, compute and network infrastructure along with security. By the end of this book, you'll have an end-to-end understanding of Ansible and how you can apply it to your own environments.
Table of Contents (20 chapters)

Chapter 5, Deploying WordPress

  1. Which fact gathered during the setup module execution can we use to tell our playbook how many processors our target host has?

The fact is ansible_processor_count

  1. True or false: Using backref in the lineinfile module makes sure that no changes are applied if the regular expression is not matched.

True

  1. Explain why we would want to build logic into the playbook to check whether WordPress is already installed.

So that we can skip the task that downloads and installs WordPress the next time the playbook is run.

  1. Which module do we use to define variables as part of a playbook run?

The set_fact module

  1. Which argument do we pass to the shell module to have the command we want to run executed in a directory of our choosing?

The argument is chdir

  1. True or false: Setting MariaDB to bind to 127.0.0.1 will allow us to access it externally.

False

...