Add initial glossary

These are the (hopefully) least-controversial glossary terms from the
initial Etherpad (https://etherpad.openstack.org/p/sdk-glossary).

Additional terms will be added as they are solidified.

Change-Id: I656aef799d786b8e7cb81c452f0180580e142f4d

doc/source/glossary.rst

@@ -0,0 +1,120 @@
+Glossary
+========
+
+CLI
+
+    Command-Line Interface; a textual user interface.
+
+compute
+
+    OpenStack Compute (Nova).
+
+container
+
+    One of the :ref:`object-store <object-store>` resources; a container holds
+    :ref:`objects <object>` being stored.
+
+endpoint
+
+    A base URL used in a REST request.  An `authentication endpoint` is
+    specifically the URL given to a user to identify a cloud.  A service
+    endpoint is generally obtained from the service catalog.
+
+host
+
+    A physical computer. Contrast with :ref:`node <node>` and :ref:`server <server>`.
+
+identity
+
+    OpenStack Identity (Keystone).
+
+image
+
+    OpenStack Image (Glance).  Also the attribute name of the disk
+    files stored for use by servers.
+
+keypair
+
+    The attribute name of the SSH public key used in the OpenStack Compute
+    API for server authentication.
+
+node
+
+    A logical system, may refer to a :ref:`server <server>` (virtual machine)
+    or a :ref:`host <host>`.
+    Generally used to describe an OS instance where a specific process is
+    running, e.g. a 'network node' is where the network processes run,
+    and may be directly on a host or in a server.  Contrast with :ref:`host <host>`
+    and :ref:`server <server>`.
+
+object
+
+    A generic term which normally refers to the a Python `object`.
+    The OpenStack Object Store service (Swift) also uses `object` as the
+    name of the item being stored within a :ref:`container <container>`.
+
+object-store
+
+    OpenStack Object Store (Swift).
+
+project
+
+    The name of the owner of resources in an OpenStack cloud.  A `project`
+    can map to a customer, account or organization in different OpenStack
+    deployments.  Used instead of the deprecated :ref:`tenant <tenant>`.
+
+region
+
+    The attribute name of a partitioning of cloud resources.
+
+.. TODO(dtroyer): Resource needs further fleshing out, revise once the
+..                object model in the SDK is finalized.
+
+resource
+
+    A Python object representing an OpenStack resource inside the SDK
+    code.  Also used to describe the items managed by OpenStack.
+
+role
+
+    A personality that a user assumes when performing a specific set of
+    operations. A `role` includes a set of rights and privileges that a
+    user assuming that role inherits. The OpenStack Identity service
+    includes the set of roles that a user can assume in the
+    :ref:`token <token>` that is issued to that user.
+
+    The individual services determine how the roles are interpreted
+    and access granted to operations or resources.  The OpenStack Identity service
+    treats a role as an arbitrary name assigned by the cloud administrator.
+
+server
+
+    A virtual machine or a bare-metal host managed by the OpenStack Compute
+    service.  Contrast with :ref:`host <host>` and :ref:`node <node>`.
+
+service
+
+    In OpenStack this refers to a service/endpoint in the
+    :ref:`ServiceCatalog <service catalog>`.
+    It could also be a collection of endpoints for different :ref:`regions <region>`.
+    A service has a type and a name.
+
+service catalog
+
+    The list of :ref:`services <service>` configured at a given authentication
+    endpoint available to the authenticated user.
+
+tenant
+
+    Deprecated in favor of :ref:`project <project>`.
+
+token
+
+    An arbitrary bit of text that is used to access resources. Some tokens
+    are `scoped` to determine what resources are accessible with it. A
+    token may be revoked at any time and is valid for a finite duration.
+
+volume
+
+    OpenStack Volume (Cinder).  Also the attribute name of the
+    virtual disks managed by the OpenStack Volume service.

doc/source/index.rst

@@ -9,5 +9,6 @@ Contents:
    installation
    usage
    contributing
+   glossary
 
 .. include:: ../../README.rst