Book Image

OpenStack Cloud Computing Cookbook - Fourth Edition

By : Kevin Jackson, Cody Bunch, Egle Sigler, James Denton
Book Image

OpenStack Cloud Computing Cookbook - Fourth Edition

By: Kevin Jackson, Cody Bunch, Egle Sigler, James Denton

Overview of this book

This is the fourth edition of the industry-acclaimed OpenStack Cloud Computing Cookbook, created by four recognized OpenStack experts. It has now been updated to work with the latest OpenStack builds, using tools and processes based on their collective and vast OpenStack experience. OpenStack Open Source Cloud software is one of the most used cloud infrastructures to support a wide variety of use cases, from software development to big data analysis. It is developed by a thriving community of individual developers from around the globe and backed by most of the leading players in the cloud space today. We make it simple to implement, massively scalable, and able to store a large pool of data and networking resources. OpenStack has a strong ecosystem that helps you provision your cloud storage needs. Add OpenStack's enterprise features to reduce the cost of your business. This book will begin by showing you the steps to build up an OpenStack private cloud environment using Ansible. You'll then discover the uses of cloud services such as the identity service, image service, and compute service. You'll dive into Neutron, the OpenStack Networking service, and get your hands dirty with configuring networks, routers, load balancers, and more. You’ll then gather more expert knowledge on OpenStack cloud computing by managing your cloud's security and migration. After that, we delve into OpenStack Object storage and you’ll see how to manage servers and work with objects, cluster, and storage functionalities. Finally, you will learn about OpenStack dashboard, Ansible, Keystone, and other interesting topics.
Table of Contents (15 chapters)
OpenStack Cloud Computing Cookbook Fourth Edition
Contributors
Preface
Another Book You May Enjoy
Index

Using Ansible to orchestrate software installation


Launching an instance using Ansible doesn't provide a user much beyond consistency, in that a playbook describes the end state of the environment: every time a user runs the task, it will either need to launch that specific instance to ensure that it is present, or it will skip that task because the instance is already running. However, we can achieve a lot more with Ansible beyond just launching a virtual machine. In this recipe, we will launch another instance that will install and start Apache.

Getting ready

Ensure that you are logged on to a correctly configured OpenStack client and can access the OpenStack environment that has Ansible installed.

How to do it...

Ansible executes playbooks of tasks. In this example, we will extend the task that launches a specific instance to allow Ansible to then connect to that instance and install Apache:

  1. We start off by extending the Ansible playbook introduced in the previous recipe to include the creation...