Install Guide, arch overview, glossary terms
-Fix missing glossary terms from overview.rst. -Add links to networking sections. Change-Id: I68e8e3a268d8390845855fafc4dcee278603282f Implements: blueprint installguide-liberty
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Karen Bradshaw
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@ -5,14 +5,14 @@ Architecture
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Overview
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~~~~~~~~
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The OpenStack project is an open source cloud computing platform that
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The :term:`OpenStack` project is an open source cloud computing platform that
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supports all types of cloud environments. The project aims for simple
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implementation, massive scalability, and a rich set of features. Cloud
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computing experts from around the world contribute to the project.
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OpenStack provides an Infrastructure-as-a-Service (IaaS) solution
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OpenStack provides an :term:`Infrastructure-as-a-Service (IaaS)<IaaS>` solution
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through a variety of complemental services. Each service offers an
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application programming interface (API) that facilitates this
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:term:`application programming interface (API)<API>` that facilitates this
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integration. The following table provides a list of OpenStack services:
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.. list-table:: **OpenStack services**
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@ -48,7 +48,7 @@ integration. The following table provides a list of OpenStack services:
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* - `Object Storage <http://www.openstack.org/software/openstack-storage/>`_
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- `Swift <http://docs.openstack.org/developer/swift/>`_
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- Stores and retrieves arbitrary unstructured
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data objects via a RESTful, HTTP based API.
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data objects via a :term:`RESTful`, HTTP based API.
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It is highly fault tolerant with its data replication and
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scale-out architecture. Its implementation is not like a
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file server with mountable directories. In this case,
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@ -82,8 +82,8 @@ integration. The following table provides a list of OpenStack services:
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* - `Orchestration <http://www.openstack.org/software/openstack-shared-services/>`_
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- `Heat <http://docs.openstack.org/developer/heat/>`_
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- Orchestrates multiple composite cloud applications by using
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either the native HOT template format or the
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AWS CloudFormation template format, through both an
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either the native :term:`HOT <Heat Orchestration Template (HOT)>` template
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format or the AWS CloudFormation template format, through both an
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OpenStack-native REST API and a CloudFormation-compatible
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Query API.
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* - `Database service <http://www.openstack.org/software/openstack-shared-services/>`_
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@ -136,10 +136,11 @@ optional services. This guide uses the following example architectures:
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- Three-node architecture with OpenStack Networking (neutron) and
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optional nodes for Block Storage and Object Storage services.
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- The controller node runs the Identity service, Image Service,
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management portions of Compute and Networking, Networking plug-in,
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and the dashboard. It also includes supporting services such as a
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SQL database, message queue, and Network Time Protocol (NTP).
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- The :term:`controller node <cloud controller node>` runs the
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Identity service, Image Service, management portions of Compute
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and Networking, Networking plug-in, and the dashboard. It also
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includes supporting services such as a SQL database,
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:term:`message queue`, and :term:`Network Time Protocol (NTP)`.
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Optionally, the controller node runs portions of Block Storage,
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Object Storage, Orchestration, Telemetry, Database, and Data
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@ -148,15 +149,18 @@ optional services. This guide uses the following example architectures:
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- The network node runs the Networking plug-in and several agents
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that provision tenant networks and provide switching, routing,
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NAT, and DHCP services. This node also handles external (Internet)
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:term:`NAT<Network Address Translation (NAT)>`, and
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:term:`DHCP` services. This node also handles external (Internet)
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connectivity for tenant virtual machine instances.
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- The compute node runs the hypervisor portion of Compute that
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operates tenant virtual machines or instances. By default, Compute
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uses KVM as the hypervisor. The compute node also runs the
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Networking plug-in and an agent that connect tenant networks to
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instances and provide firewalling (security groups) services. You
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can run more than one compute node.
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- The :term:`compute node` runs the :term:`hypervisor` portion of
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Compute that operates :term:`tenant`
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:term:`virtual machines <virtual machine (VM)>` or instances. By
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default, Compute uses :term:`KVM <kernel-based VM (KVM)>` as the
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:term:`hypervisor`. The compute node also runs the Networking
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plug-in and an agent that connect tenant networks to instances and
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provide firewalling (:term:`security groups <security group>`)
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services. You can run more than one compute node.
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Optionally, the compute node runs a Telemetry agent to collect
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meters. Also, it can contain a third network interface on a
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@ -181,13 +185,10 @@ optional services. This guide uses the following example architectures:
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a separate storage network to improve performance of storage
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services.
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.. note:: When you implement this architecture, skip <TODO>.
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.. todo(karenb)
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section_nova-networking in
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ch_networking. Optional services might
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require additional nodes or additional resources on existing
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nodes.
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.. note::
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When you implement this architecture, skip the section
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:doc:`networking-nova`. Optional services might require
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additional nodes or additional resources on existing nodes.
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@ -225,21 +226,24 @@ optional services. This guide uses the following example architectures:
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- Two-node architecture with legacy networking (nova-network) and
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optional nodes for Block Storage and Object Storage services.
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- The controller node runs the Identity service, Image service,
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management portion of Compute, and the dashboard. It also includes
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supporting services such as a SQL database, message queue, and
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Network Time Protocol (NTP).
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- The :term:`controller node <cloud controller node>` runs the
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Identity service, Image service, management portion of Compute,
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and the dashboard. It also includes supporting services such as a
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SQL database, :term:`message queue`, and :term:`Network Time
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Protocol (NTP)`.
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Optionally, the controller node runs portions of Block Storage,
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Object Storage, Orchestration, Telemetry, Database, and Data
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processing services. These components provide additional features
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for your environment.
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- The compute node runs the hypervisor portion of Compute that
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operates tenant virtual machines or instances. By default, Compute
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uses KVM as the hypervisor. Compute also provisions tenant
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networks and provides firewalling (security groups) services. You
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can run more than one compute node.
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- The :term:`compute node` runs the :term:`hypervisor` portion of
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Compute that operates :term:`tenant` :term:`virtual machines
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<virtual machine (VM)>` or instances. By default, Compute uses
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:term:`KVM <kernel-based VM (KVM)>` as the :term:`hypervisor`.
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Compute also provisions tenant networks and provides firewalling
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(:term:`security groups <security group>`) services. You can run
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more than one compute node.
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Optionally, the compute node runs a Telemetry agent to collect
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meters. Also, it can contain a third network interface on a
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@ -266,13 +270,9 @@ optional services. This guide uses the following example architectures:
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.. note::
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When you implement this architecture, skip <TODO>
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.. todo(karen)
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section_neutron-networking in
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ch_networking. To use optional services, you
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might need to build additional nodes, as
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described in subsequent chapters.
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When you implement this architecture, skip the section
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:doc:`networking-neutron`. To use optional services, you might need to
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build additional nodes.
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