Image service¶
The Image service (glance) enables users to discover, register, and retrieve virtual machine images. It offers a REST API that enables you to query virtual machine image metadata and retrieve an actual image. You can store virtual machine images made available through the Image service in a variety of locations, from simple file systems to object-storage systems like OpenStack Object Storage.
Důležité
Pro zjednodušení tento průvodce nastavuje službu obrazů k použití podpůrné vrstvy file, která obrazy ukládá a nahrává do adresáře v uzlu kontroléru provozující službu obrazů. Standardně je tento adresář v /var/lib/glance/images/.
Before you proceed, ensure that the controller node has at least
several gigabytes of space available in this directory. Keep in
mind that since the file back end is often local to a controller
node, it is not typically suitable for a multi-node glance deployment.
For information on requirements for other back ends, see Configuration Reference.
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