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

Architecture and subsystems


Keystone comprises a bunch of services. We will understand them and their functionalities; before this, let's take a quick look at the Keystone architecture:

In the preceding diagram, you will see the different subsystems of the service and the common components that will be shared with the other components of OpenStack. The MySQL server will be used by most of the components of the OpenStack, and hence it is classified as OpenStack Common. The LDAP service is optional and will be common from an enterprise tool set perspective.

Identity

Identity verifies the credentials and data of the users and user groups. It can store the user data in the local database (MySQL), or it can connect to the LDAP to get this data. If the local database is used, this service is capable of performing the CRUD (Create, Read, Update, and Delete) operations.

Resource

Resource is similar to identity, but it does this for resources, such as projects and domains. The LDAP-versus-local-database...