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author | Zuul <zuul@review.openstack.org> | 2019-03-11 15:00:58 +0000 |
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committer | Gerrit Code Review <review@openstack.org> | 2019-03-11 15:00:58 +0000 |
commit | 3ba6b40c2795e1c4eadad1c83fff084994f83d89 (patch) | |
tree | 56e7488b16be89f6e55d7ac299bf323079cf6320 | |
parent | 0350fa63715952ea1739e850f027cd1c5d2006ed (diff) | |
parent | eceb4f54c676f46436d93380a4613e6ed08a5d1b (diff) | |
download | glance-3ba6b40c2795e1c4eadad1c83fff084994f83d89.tar.gz |
Merge "Clarify the Glance/metadefs relationship"
-rw-r--r-- | doc/source/index.rst | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/doc/source/index.rst b/doc/source/index.rst index 12593e5af..17fbaf6c0 100644 --- a/doc/source/index.rst +++ b/doc/source/index.rst @@ -23,7 +23,10 @@ About Glance The Image service (glance) project provides a service where users can upload and discover data assets that are meant to be used with other services. -This currently includes images and metadata definitions. +This currently includes *images* and *metadata definitions*. + +Images +------ Glance image services include discovering, registering, and retrieving virtual machine (VM) images. Glance has a RESTful API that allows @@ -35,6 +38,27 @@ VM images made available through Glance can be stored in a variety of locations from simple filesystems to object-storage systems like the OpenStack Swift project. +Metadata Definitions +-------------------- + +Glance hosts a *metadefs* catalog. This provides the OpenStack community +with a way to programmatically determine various metadata key names and +valid values that can be applied to OpenStack resources. + +Note that what we're talking about here is simply a *catalog*; the keys and +values don't actually do anything unless they are applied to individual +OpenStack resources using the APIs or client tools provided by the services +responsible for those resources. + +It's also worth noting that there is no special relationship between the +Image Service and the Metadefs Service. If you want to apply the keys and +values defined in the Metadefs Service to images, you must use the Image +Service API or client tools just as you would for any other OpenStack +service. + +Design Principles +----------------- + Glance, as with all OpenStack projects, is written with the following design guidelines in mind: |