Book Image

Production Ready OpenStack - Recipes for Successful Environments

By : Arthur Berezin
Book Image

Production Ready OpenStack - Recipes for Successful Environments

By: Arthur Berezin

Overview of this book

OpenStack is the most popular open source cloud platform used by organizations building internal private clouds and by public cloud providers. OpenStack is designed in a fully distributed architecture to provide Infrastructure as a Service, allowing us to maintain a massively scalable cloud infrastructure. OpenStack is developed by a vibrant community of open source developers who come from the largest software companies in the world. The book provides a comprehensive and practical guide to the multiple uses cases and configurations that OpenStack supports. This book simplifies the learning process by guiding you through how to install OpenStack in a single controller configuration. The book goes deeper into deploying OpenStack in a highly available configuration. You'll then configure Keystone Identity Services using LDAP, Active Directory, or the MySQL identity provider and configure a caching layer and SSL. After that, you will configure storage back-end providers for Glance and Cinder, which will include Ceph, NFS, Swift, and local storage. Then you will configure the Neutron networking service with provider network VLANs, and tenant network VXLAN and GRE. Also, you will configure Nova's Hypervisor with KVM, and QEMU emulation, and you will configure Nova's scheduler filters and weights. Finally, you will configure Horizon to use Apache HTTPD and SSL, and you will customize the dashboard's appearance.
Table of Contents (16 chapters)
Production Ready OpenStack - Recipes for Successful Environments
About the Author
About the Reviewers


Glance image service is a project that offers images as a service, it enables users to discover, register, and retrieve operating system disk images from which users can launch OpenStack instances. The image service offers a REST API that enables users to query virtual machine disk images and metadata. Virtual machine disk images can be stored on various datastore backends, such as local filesystem, NFS, Ceph, Swift, and others.

Glance consists of the following two services:

  • glance-api accepts REST API calls for image discovery, retrieval, and creation. It stores and retrieves disk images from storage backend. The Image Service supports a variety of backends, including local filesystems, object storage, Ceph RADOS block devices, HTTP, and Amazon S3.

  • glance-registry stores, processes, and retrieves metadata of disk images from the backend datastore storage device. Metadata includes some items, such as size and type.