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Report a bug against this page"><i class="fa fa-bug" data-toggle="tooltip" data-placement="top" title="Report a Bug"></i></a> </div> </div> <div class="row"> <div class="col-lg-12"> <div class="docs-body" role="main"> <section id="welcome-to-the-heat-documentation"> <h1>Welcome to the Heat documentation!<a class="headerlink" href="#welcome-to-the-heat-documentation" title="Link to this heading">¶</a></h1> <p>Heat is a service to orchestrate composite cloud applications using a declarative template format through an OpenStack-native REST API.</p> <section id="heat-s-purpose-and-vision"> <h2>Heat’s purpose and vision<a class="headerlink" href="#heat-s-purpose-and-vision" title="Link to this heading">¶</a></h2> <ul class="simple"> <li><p>Heat provides a template based orchestration for describing a cloud application by executing appropriate <a class="reference internal" href="glossary.html#term-OpenStack"><span class="xref std std-term">OpenStack</span></a> API calls to generate running cloud applications.</p></li> <li><p>A Heat template describes the infrastructure for a cloud application in text files which are readable and writable by humans, and can be managed by version control tools.</p></li> <li><p>Templates specify the relationships between resources (e.g. this volume is connected to this server). This enables Heat to call out to the OpenStack APIs to create all of your infrastructure in the correct order to completely launch your application.</p></li> <li><p>The software integrates other components of OpenStack. The templates allow creation of most OpenStack resource types (such as instances, floating ips, volumes, security groups, users, etc), as well as some more advanced functionality such as instance high availability, instance autoscaling, and nested stacks.</p></li> <li><p>Heat primarily manages infrastructure, but the templates integrate well with software configuration management tools such as Puppet and Ansible.</p></li> <li><p>Operators can customise the capabilities of Heat by installing plugins.</p></li> </ul> <p>This documentation offers information aimed at end-users, operators and developers of Heat.</p> </section> <section id="operating-heat"> <h2>Operating Heat<a class="headerlink" href="#operating-heat" title="Link to this heading">¶</a></h2> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="install/index.html">Installing Heat</a></li> <li class="toctree-l1"><a class="reference internal" href="operating_guides/httpd.html">Running Heat API services in HTTP Server</a></li> <li class="toctree-l1"><a class="reference internal" href="configuration/index.html">Configuring Heat</a></li> <li class="toctree-l1"><a class="reference internal" href="admin/index.html">Administering Heat</a></li> <li class="toctree-l1"><a class="reference internal" href="operating_guides/scale_deployment.html">Scaling a Deployment</a></li> <li class="toctree-l1"><a class="reference internal" href="operating_guides/upgrades_guide.html">Upgrades Guideline</a></li> <li class="toctree-l1"><a class="reference internal" href="man/index.html">Man pages for services and utilities</a></li> </ul> </div> </section> <section id="using-heat"> <h2>Using Heat<a class="headerlink" href="#using-heat" title="Link to this heading">¶</a></h2> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="getting_started/create_a_stack.html">Creating your first stack</a></li> <li class="toctree-l1"><a class="reference internal" href="glossary.html">Glossary</a></li> </ul> </div> <section id="working-with-templates"> <h3>Working with Templates<a class="headerlink" href="#working-with-templates" title="Link to this heading">¶</a></h3> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="template_guide/index.html">Template Guide</a></li> <li class="toctree-l1"><a class="reference internal" href="templates/index.html">Example Templates</a></li> </ul> </div> </section> <section id="using-the-heat-service"> <h3>Using the Heat Service<a class="headerlink" href="#using-the-heat-service" title="Link to this heading">¶</a></h3> <ul class="simple"> <li><p><a class="reference external" href="https://developer.openstack.org/api-ref/orchestration/v1/">OpenStack Orchestration API v1 Reference</a></p></li> <li><p><a class="extlink-python-heatclient reference external" href="https://docs.openstack.org/python-heatclient/latest/">Python and CLI client</a></p></li> </ul> </section> </section> <section id="developing-heat"> <h2>Developing Heat<a class="headerlink" href="#developing-heat" title="Link to this heading">¶</a></h2> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="developing_guides/index.html">Heat Developer Guidelines</a><ul> <li class="toctree-l2"><a class="reference internal" href="getting_started/on_devstack.html">Heat and DevStack</a></li> <li class="toctree-l2"><a class="reference internal" href="developing_guides/blueprints.html">Blueprints and Specs</a></li> <li class="toctree-l2"><a class="reference internal" href="developing_guides/architecture.html">Heat architecture</a></li> <li class="toctree-l2"><a class="reference internal" href="developing_guides/pluginguide.html">Heat Resource Plug-in Development Guide</a></li> <li class="toctree-l2"><a class="reference internal" href="developing_guides/schedulerhints.html">Heat Stack Lifecycle Scheduler Hints</a></li> <li class="toctree-l2"><a class="reference internal" href="developing_guides/gmr.html">Guru Meditation Reports</a></li> <li class="toctree-l2"><a class="reference internal" href="developing_guides/supportstatus.html">Heat Support Status usage Guide</a></li> <li class="toctree-l2"><a class="reference internal" href="developing_guides/rally_on_gates.html">Using Rally on Heat gates</a></li> </ul> </li> </ul> </div> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="api/index.html">Source Code Index</a></li> </ul> </div> </section> <section id="for-contributors"> <h2>For Contributors<a class="headerlink" href="#for-contributors" title="Link to this heading">¶</a></h2> <ul> <li><p>If you are a new contributor to Heat please refer: <a class="reference internal" href="contributor/contributing.html"><span class="doc">So You Want to Contribute…</span></a></p> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="contributor/index.html">Heat Contributor Guidelines</a><ul> <li class="toctree-l2"><a class="reference internal" href="contributor/contributing.html">So You Want to Contribute…</a></li> </ul> </li> </ul> </div> </li> </ul> </section> <section id="indices-and-tables"> <h2>Indices and tables<a class="headerlink" href="#indices-and-tables" title="Link to this heading">¶</a></h2> <ul class="simple"> <li><p><a class="reference internal" href="genindex.html"><span class="std std-ref">Index</span></a></p></li> <li><p><a class="reference internal" href="py-modindex.html"><span class="std std-ref">Module Index</span></a></p></li> <li><p><a class="reference internal" href="search.html"><span class="std std-ref">Search Page</span></a></p></li> </ul> </section> </section> </div> </div> </div> <div class="docs-actions"> <a href="install/index.html"><i class="fa fa-angle-double-right" data-toggle="tooltip" data-placement="top" title="Next: Installing Heat"></i></a> <a id="pdfLink2" href="" target="_blank" title="Download the manuals as PDF"><i class="fa fa-file-pdf-o" data-toggle="tooltip" data-placement="top" title="Download PDF"></i></a> <a id="logABugLink3" href="" target="_blank" title="Found an error? Report a bug against this page"><i class="fa fa-bug" data-toggle="tooltip" data-placement="top" title="Report a Bug"></i></a> </div> <div class="row docs-byline bottom"> <div class="docs-updated">this page last updated: 2021-05-14 15:20:01</div> </div> <div class="row"> <div class="col-lg-8 col-md-8 col-sm-8 docs-license"> <a href="https://creativecommons.org/licenses/by/3.0/"> <img src="_static/images/docs/license.png" alt="Creative Commons Attribution 3.0 License"/> </a> <p> Except where otherwise noted, this document is licensed under <a href="https://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution 3.0 License</a>. See all <a href="https://www.openstack.org/legal"> OpenStack Legal Documents</a>. </p> </div> <div class="col-lg-4 col-md-4 col-sm-4 docs-actions-wrapper">  <a href="#" id="logABugLink2" class="docs-footer-actions"><i class="fa fa-bug"></i> found an error? report a bug</a> </div> </div> </div> <div class="col-lg-3 col-md-4 col-sm-4 col-lg-pull-9 col-md-pull-8 col-sm-pull-8 docs-sidebar"> <div class="btn-group docs-sidebar-releases"> <button onclick="location.href='/'" class="btn docs-sidebar-home" data-toggle="tooltip" data-placement="top" title="OpenStack Docs Home"><i class="fa fa-arrow-circle-o-left"></i></button> <button type="button" data-toggle="dropdown" class="btn docs-sidebar-release-select">OpenStack Documentation<i class="fa fa-caret-down"></i></button> <ul class="dropdown-menu docs-sidebar-dropdown" role="menu"> <li role="presentation" class="dropdown-header">Guides</li> <li role="presentation"><a role="menuitem" tabindex="-1" 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(Simplified Chinese)</a></li> </ul> </div> <div class="docs-sidebar-toc"> <div class="docs-sidebar-section" id="table-of-contents"> <a href="#" class="docs-sidebar-section-title"><h4>openstack-heat 23.1.0.dev83</h4></a> <ul> <li><a class="reference internal" href="#">Welcome to the Heat documentation!</a><ul> <li><a class="reference internal" href="#heat-s-purpose-and-vision">Heat’s purpose and vision</a></li> <li><a class="reference internal" href="#operating-heat">Operating Heat</a></li> <li><a class="reference internal" href="#using-heat">Using Heat</a><ul> <li><a class="reference internal" href="#working-with-templates">Working with Templates</a></li> <li><a class="reference internal" href="#using-the-heat-service">Using the Heat Service</a></li> </ul> </li> <li><a class="reference internal" href="#developing-heat">Developing Heat</a><ul> </ul> </li> <li><a class="reference internal" href="#for-contributors">For Contributors</a></li> <li><a class="reference internal" 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