CINXE.COM

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Lifecycle</a></div></div></div><div class="section-container container pe-0 pt-1"><div class=nav-container><a href=https://docs.crossplane.io/contribute/ class="d-inline-flex align-items-center">Contributing Guide</a></div></div><div class="section-container container pe-0 pt-1"><div class="container nav-container pe-0 d-flex w-100"><a class="d-flex w-100 border-0" href="https://github.com/orgs/crossplane/projects/20/views/9?pane=info" target=_blank>Crossplane Roadmap</a><div class="d-flex flex-shrink-1 sidebar-control-container align-self-center"><a href="https://github.com/orgs/crossplane/projects/20/views/9?pane=info"><svg class="flex bi"><use xlink:href="#box-arrow-up-right"/></svg></a></div></div></div></nav></div></div></aside><main class="bd-main order-1"><div class="bd-intro pt-2 ps-lg-2"><div class="d-md-flex flex-md-row-reverse align-items-center justify-content-between"><div class="mb-3 mb-md-0 d-flex"><div class="dropdown float-end bd-dropdown"><a class="btn btn-outline-secondary dropdown-toggle bd-dropdown-item text-reset" href=# role=button id=dropdownMenuLink data-bs-toggle=dropdown aria-haspopup=true aria-expanded=false>master</a><div class="dropdown-menu bd-border-color bd-dropdown" aria-labelledby=dropdownMenuLink><a class="dropdown-item bd-dropdown-item active" aria-current=true href=https://docs.crossplane.io/master/learn/feature-lifecycle/>master</a> <a class="dropdown-item bd-dropdown-item" href=https://docs.crossplane.io/v1.18/learn/feature-lifecycle/>v1.18<div class="badge rounded-pill latest">Latest</div></a><a class="dropdown-item bd-dropdown-item" href=https://docs.crossplane.io/v1.17/learn/feature-lifecycle/>v1.17</a> <a class="dropdown-item bd-dropdown-item" href=https://docs.crossplane.io/v1.16/learn/feature-lifecycle/>v1.16</a></div></div></div><h1 class="bd-title mb-0" id=content>Feature Lifecycle</h1></div></div><div class="bd-toc mt-3 mb-5 my-lg-0 ps-xl-3 mb-lg-5"><button class="btn btn-link p-md-0 mb-2 mb-md-0 text-decoration-none bd-toc-toggle d-md-none" type=button data-bs-toggle=collapse data-bs-target=#tocContents aria-expanded=false aria-controls=tocContents> On this page<svg class="bi d-md-none ms-2" aria-hidden="true"><use xlink:href="#chevron-expand"/></svg></button> <strong class="d-none d-md-block h6 my-2">On this page</strong><hr class="d-none d-md-block my-2"><div class="collapse bd-toc-collapse" id=tocContents><nav id=TableOfContents><a class=nav-link href=#feature-lifecycle>Feature Lifecycle</a><ul class=nav><li class=nav-item><a class=nav-link href=#alpha-features>Alpha Features</a></li><li class=nav-item><a class=nav-link href=#beta-features>Beta Features</a></li><li class=nav-item><a class=nav-link href=#ga-features>GA Features</a></li></ul></li></ul></nav><nav class=pt-3><div class=pb-2><svg class="bi" width="1em" height="1em"><use xlink:href="#pencil-square"/></svg><span class=ps-1><a target=_blank href="https://github.com/crossplane/docs/issues/new?title=[Web%20Bug]%20-%20Feature%20Lifecycle&body=%3c!--%20What%27s%20the%20problem?%20--%3e%0a%0a%0aURL:%20https://docs.crossplane.io/master/learn/feature-lifecycle/">Report a problem</a></span></div><div><svg class="bi" width="1em" height="1em"><use xlink:href="#github"/></svg><span class=ps-1><a href=https://github.com/crossplane/docs/tree/master/content/master/learn/feature-lifecycle.md>View page source</a></span></div></div></nav></div><div class="bd-content ps-lg-2 DocSearch-content"><div class="bd-callout bd-callout-danger d-flex flex-column w-100"><div class="d-flex bd-title fs-6 fw-bold border-bottom border-danger"><div class="d-flex pe-3 align-self-center"><svg class="bi flex-shrink-0" role="img" aria-label="Warning:"><use xlink:href="#fire"/></svg></div><div class=d-flex>This document is for an unreleased version of Crossplane.</div></div><div class=mt-3><p>This document applies to the Crossplane <code>master</code> branch and not to the latest release v1.18.</p></div></div><h1 id=feature-lifecycle>Feature Lifecycle</h1><p>Crossplane follows a similar feature lifecycle to <a href=https://kubernetes.io/docs/reference/command-line-tools-reference/feature-gates/#feature-stages>upstream Kubernetes</a>. All major new features must be added in alpha. Alpha features are expected to eventually graduate to beta, and then to general availability (GA). Features that languish at alpha or beta may be subject to deprecation.</p><h2 id=alpha-features>Alpha Features <a class=anchor-link id=alpha-features href=#alpha-features aria-label="Link to this section: Alpha Features"></a></h2><p>Alpha are off by default, and must be enabled by a feature flag, for example <code>--enable-composition-revisions</code>. API types pertaining to alpha features use a <code>vNalphaN</code> style API version, like <code>v1alpha</code>. <strong>Alpha features are subject to removal or breaking changes without notice</strong>, and generally not considered ready for use in production.</p><p>In some cases alpha features require fields be added to existing beta or GA</p><p>API types. In these cases fields must clearly be marked (for instance in their OpenAPI</p><p>schema) as alpha and subject to alpha API constraints (or lack thereof).</p><p>All alpha features should have an issue tracking their graduation to beta.</p><h2 id=beta-features>Beta Features <a class=anchor-link id=beta-features href=#beta-features aria-label="Link to this section: Beta Features"></a></h2><p>Beta features are on by default, but may be disabled by a feature flag. API types pertaining to beta features use a <code>vNbetaN</code> style API version, like <code>v1beta1</code>. Beta features are considered to be well tested, and won’t be removed completely without being marked deprecated for at least two releases.</p><p>The schema and/or semantics of objects may change in incompatible ways in a subsequent beta or stable release. When this happens, we will provide instructions for migrating to the next version. This may require deleting, editing, and recreating API objects. The editing process may require some thought. This may require downtime for applications that rely on the feature.</p><p>In some cases beta features require fields be added to existing GA API types. In</p><p>these cases fields must clearly be marked (for instance in their OpenAPI schema) as beta</p><p>and subject to beta API constraints (or lack thereof).</p><p>All beta features should have an issue tracking their graduation to GA.</p><h2 id=ga-features>GA Features <a class=anchor-link id=ga-features href=#ga-features aria-label="Link to this section: GA Features"></a></h2><p>GA features are always enabled - they can’t be disabled. API types pertaining to GA features use <code>vN</code> style API versions, like <code>v1</code>. GA features are widely used and thoroughly tested. 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