.. Copyright 2010-2012 United States Government as represented by the Administrator of the National Aeronautics and Space Administration. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. ========================================== Welcome to Nova's developer documentation! ========================================== Nova is an OpenStack project designed to provide power massively scalable, on demand, self service access to compute resources. The developer documentation provided here is continually kept up-to-date based on the latest code, and may not represent the state of the project at any specific prior release. .. note:: This is documentation for developers, if you are looking for more general documentation including API, install, operator and user guides see `docs.openstack.org`_ .. _`docs.openstack.org`: http://docs.openstack.org This documentation is intended to help explain what the Nova developers think is the current scope of the Nova project, as well as the architectural decisions we have made in order to support that scope. We also document our plans for evolving our architecture over time. Finally, we documented our current development process and policies. Compute API References ====================== The Nova compute API is quite large, we provide a concept guide which gives some of the high level details, as well as a more detailed API reference. The API reference covers all versions of the API. Version 2.0 and Version 2.1 are actually the same API, and Version 2.1 evolves forward with microversions. The API ref starts with the base API version, and specifies all changes that exist to it as microversions roll forward. You can also see a history of our microversions here: .. toctree:: :maxdepth: 1 reference/api-microversion-history .. note:: Only Version 2.1 APIs should be used from this point forward, Version 2.0 APIs are only provided for backward compatibility purposes. .. _`Compute API Guide`: http://developer.openstack.org/api-guide/compute/ .. _`Compute API Reference`: http://developer.openstack.org/api-ref/compute/ There was a session on the v2.1 API at the Liberty summit which you can watch `here `_. Feature Status ============== Nova aims to have a single compute API that works the same across all deployments of Nova. While many features are well-tested, well-documented, support live upgrade, and are ready for production, some are not. Also the choice of underlying technology affects the list of features that are ready for production. Our first attempt to communicate this is the feature support matrix (previously called the hypervisor support matrix). Over time we hope to evolve that to include a classification of each feature's maturity and exactly what technology combinations are covered by current integration testing efforts. .. toctree:: :maxdepth: 1 user/feature-classification user/support-matrix Developer Guide =============== If you are new to Nova, this should help you start to understand what Nova actually does, and why. .. toctree:: :maxdepth: 1 contributor/index Architecture Concepts ---------------------- This follows on for the discussion in the introduction, and digs into details on specific parts of the Nova architecture. We find it important to document the reasons behind our architectural decisions, so its easier for people to engage in the debates about the future of Nova's architecture. This is all part of Open Design and Open Development. .. NOTE: keep this list sorted by title .. toctree:: :maxdepth: 1 reference/rpc user/architecture user/block-device-mapping user/conductor user/filter-scheduler user/aggregates reference/i18n reference/notifications user/placement user/quotas reference/threading reference/vm-states user/wsgi Architecture Evolution Plans ----------------------------- The following section includes documents that describe the overall plan behind groups of nova-specs. Most of these cover items relating to the evolution of various parts of Nova's architecture. Once the work is complete, these documents will move into the "Concepts" section. If you want to get involved in shaping the future of Nova's architecture, these are a great place to start reading up on the current plans. .. toctree:: :maxdepth: 1 user/cells user/cellsv2_layout user/upgrade reference/policy-enforcement reference/stable-api reference/scheduler-evolution Configuration ------------- .. toctree:: :maxdepth: 1 configuration/config configuration/sample-config Policy ------ .. toctree:: :maxdepth: 1 configuration/policy configuration/sample-policy Man Pages ---------- .. toctree:: :maxdepth: 1 cli/index Module Reference ---------------- .. toctree:: :maxdepth: 1 reference/services .. # NOTE(mriedem): This is the section where we hide things that we don't # actually want in the table of contents but sphinx build would fail if # they aren't in the toctree somewhere. For example, we hide api/autoindex # since that's already covered with modindex below. .. toctree:: :hidden: contributor/development-environment reference/gmr contributor/api contributor/api-2 contributor/blueprints contributor/code-review contributor/microversions contributor/placement.rst contributor/policies.rst contributor/releasenotes contributor/testing contributor/testing/libvirt-numa contributor/testing/serial-console contributor/testing/zero-downtime-upgrade contributor/how-to-get-involved contributor/process contributor/project-scope Installation Guide ================== .. toctree:: :maxdepth: 2 install/index Metadata ======== .. toctree:: :maxdepth: 1 user/vendordata Administrators Guide ==================== .. toctree:: :maxdepth: 2 admin/index Indices and tables ================== * :ref:`search`