https://www.packtpub.com/virtualization-and-cloud/openstack-administration-ansible
OR
http://www.amazon.com/OpenStack-Administration-Ansible-Walter-Bentley/dp/1785884611

Walter Bentley (@djstayflypro)

This book is intended for Cloud Operators and/or Infrastructure administrators who are adopting an OpenStack cloud and want to automate administrative functions using Ansible. The book can provide a two-for-one type of learning experience. First they would become familiar with how to handle Cloud Operator tasks (ie creating multiple users/tenants, creating host aggregates/AZ's, setting up Multi-Tenant Isolation, setting quotas, evacuating compute hosts for maintenance and etc). Also, the reader would become very familiar with how Ansible works and some of its best practices.

Additional OpenStack and Ansible information can be found at the following blog: http://www.hitchnyc.com