Book Image

Learning Ansible 2 - Second Edition

Book Image

Learning Ansible 2 - Second Edition

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 (16 chapters)
Learning Ansible 2 Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

Indicating differences between files using --diff


In the check mode, you can use the --diff option to show the changes that would be applied to a file. To be able to see the --diff option in use, we need to change our playbooks/setup_apache.yaml playbook to match the following:

    - hosts: localhost 
      tasks: 
      - name: Ensure Apache is installed 
        yum: 
          name: httpd 
          state: present 
      - name: Ensure Apache in enabled 
        service: 
          name: httpd 
          state: running 
          enabled: True 
      - name: Ensure Apache userdirs are properly configured 
        template: 
          src: '../templates/userdir.conf' 
          dest: '/etc/httpd/conf.d/userdir.conf' 

As you can see, we added a task, which will ensure a certain state of the /etc/httpd/conf.d/userdir.conf file.

We also need to create a template file placed in templates/userdir.conf with the following...