Book Image

Learning OpenStack

By : Alok Shrivastwa, Sunil Sarat
Book Image

Learning OpenStack

By: Alok Shrivastwa, Sunil Sarat

Overview of this book

<p><span id="description" class="sugar_field">OpenStack is a free and open source cloud computing platform that is rapidly gaining popularity in Enterprise data centres. It is a scalable operating system and is used to build private and public clouds. It is imperative for all the aspiring cloud administrators to possess OpenStack skills if they want to succeed in the cloud-led IT infrastructure space.</span></p> <p><span id="description" class="sugar_field">This book will help you gain a clearer understanding of OpenStack’s components and their interaction with each other to build a cloud environment. You will learn to deploy a self-service based cloud using just four virtual machines and standard networking.</span></p> <p><span id="description" class="sugar_field">You begin with an introduction on the basics of cloud computing. This is followed by a brief look into the need for authentication and authorization, the different aspects of dashboards, cloud computing fabric controllers, along with “Networking as a Service” and “Software Defined Networking.” Then, you will focus on installing, configuring, and troubleshooting different architectures such as Keystone, Horizon, Nova, Neutron, Cinder, Swift, and Glance. Furthermore, you will see how all of the OpenStack components come together in providing IaaS to users. Finally, you will take your OpenStack cloud to the next level by integrating it with other IT ecosystem elements before automation.</span></p> <p><span id="description" class="sugar_field">By the end of this book, you will be proficient with the fundamentals and application of OpenStack.</span></p>
Table of Contents (17 chapters)
Learning OpenStack
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Working with Nova


Nova has various components that we will install. A representation of the communication flow among the components is shown in the following block diagram:

Nova utilizes other services such as Glance to provide images and Cinder for block volumes, which is also not shown in the block diagram. Nova supports multiple hypervisors such as KVM, Qemu, XenServer, and VMware.

The Nova Compute service is the one that takes care of communication with different hypervisors using virtualization drivers. Each and every supported Hypervisor has a driver associated with it. You can see the drivers and the code associated with these in the nova/nova/virt directory of the source code. Also, please note that the optional components such as nova-xvpnvncproxy, nova-spicehtml5proxy, or euca tools are not shown in the block diagram.

The block diagram shows the major functional components of Nova, and they can be installed on a single node or multiple nodes as they all communicate using the message...