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)

The playbook

We are going to split the playbook into a few different roles. Unlike previous chapters, we are going to make a few of the roles reusable and pass parameters to them as they are executed. Our first role is a simple one, which installs the packages we need to run our OpenSCAP scan.

Install role

As mentioned previously, this first role is a simple one that installs the packages we need to run a scan:

$ ansible-galaxy init roles/install

There are a few defaults we need to set in roles/install/defaults/main.yml; these are:

install:
packages:
- "openscap-scanner"
- "scap-security-guide"

There is a task in roles/install/tasks/main.yml that installs the packages and also performs a yum update...