Foreword
Over the last few years, Ansible has rapidly become one of the most popular IT
automation tools in the world. We’ve seen the open source community expand from
the beginning of the project in early 2012 to over 1200 individual contributors today.
Ansible’s modular architecture and broad applicability to a variety of automation
and orchestration problems created a perfect storm for hundreds of thousands of
users worldwide.
Ansible is a general purpose IT automation platform, and it can be used for a variety
of purposes. From configuration management: enforcing declared state across your
infrastructure, to procedural application deployment, to broad multi-component and
multi-system orchestration of complicated interconnected systems. It is agentless, so
it can coexist with legacy tools, and it’s easy to install, configure, and maintain.
Ansible had its beginnings in 2012, when Michael DeHaan, the project’s founder,
took inspiration from several tools he had written prior, along with some hands-on
experience with the state of configuration management at the time, and launched the
project in February of 2012. Some of Ansible’s unique attributes like its module-based
architecture and agentless approach quickly attracted attention in the open source
world.
In 2013, Said Ziouani, Michael DeHaan, and I launched Ansible, Inc. We wanted
to harness the growing adoption of Ansible in the open source world, and create
products to fill the gaps in the IT automation space as we saw them. The existing
tools were complicated, error-prone, and hard to learn. Ansible gave users across
an IT organization a low barrier of entry into automation, and it could be deployed
incrementally, solving as few or as many problems as the team needed without a big
shift in methodology.
This book is about using Ansible in a DevOps environment. I’m not going to try to
define what DevOps is or isn’t, or who’s doing it or not. My personal interpretation
of the idea is that DevOps is meant to shorten the distance between the developers
writing the code, and the operators running the application. Now, I don’t believe
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