April 2017
Intermediate to advanced
470 pages
11h 12m
English
Content preview from Mastering OpenStack - Second Edition
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Image management
The cloud controller will also be hosting the Glance service for image management that is responsible for the storage, listing, and retrieval of images using the glance-api and glance-registry. The Glance API provides an external REST interface to query virtual machine images and associated metadata. The Glance registry stores the image metadata in the database while the storage backend stores the actual image. While designing the image, a store decision can be made about which backend will be used to launch the controller in the cloud.
The glance-api supports several backend options to store images. Swift is a good alternative and allows storing images as objects, providing a scalable placement for image storage. Other alternatives ...
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