Introduction
OpenStack Image Service, also known as Glance, is a service that allows you to register, discover, and retrieve virtual machine images for use in our OpenStack environment. Images made available through OpenStack Image Service can be stored in a variety of backend locations, from local filesystem storage to distributed filesystems, such as OpenStack Object Storage.
In this chapter we will be concentrating on the Controller host as shown below:
![](https://static.packt-cdn.com/products/9781782174783/graphics/B04127OS_02_08.jpg)