deploy: 658c4dec4d

2026-09-27 05:28:22 +00:00 · 2022-10-26 17:24:02 +00:00
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 <link rel="search" type="application/opensearchdescription+xml" title="Rancher Manager" href="/zh/opensearch.xml"><title data-rh="true">Rancher 项目中资源配额的工作原理 | Rancher Manager</title><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="http://docs.ranchermanager.rancher.io//zh/how-to-guides/advanced-user-guides/manage-projects/manage-project-resource-quotas/about-project-resource-quotas"><meta data-rh="true" name="docusaurus_locale" content="zh"><meta data-rh="true" name="docsearch:language" content="zh"><meta data-rh="true" name="docusaurus_version" content="current"><meta data-rh="true" name="docusaurus_tag" content="docs-default-current"><meta data-rh="true" name="docsearch:version" content="current"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-current"><meta data-rh="true" property="og:title" content="Rancher 项目中资源配额的工作原理 | Rancher Manager"><meta data-rh="true" name="description" content="Rancher 中的资源配额包含与 Kubernetes 原生版本相同的功能。Rancher 还扩展了资源配额的功能，让你将资源配额应用于项目。"><meta data-rh="true" property="og:description" content="Rancher 中的资源配额包含与 Kubernetes 原生版本相同的功能。Rancher 还扩展了资源配额的功能，让你将资源配额应用于项目。"><link data-rh="true" rel="icon" href="/zh/img/favicon.png"><link data-rh="true" rel="canonical" href="http://docs.ranchermanager.rancher.io//zh/how-to-guides/advanced-user-guides/manage-projects/manage-project-resource-quotas/about-project-resource-quotas"><link data-rh="true" rel="alternate" href="http://docs.ranchermanager.rancher.io//how-to-guides/advanced-user-guides/manage-projects/manage-project-resource-quotas/about-project-resource-quotas" hreflang="en"><link data-rh="true" rel="alternate" href="http://docs.ranchermanager.rancher.io//zh/how-to-guides/advanced-user-guides/manage-projects/manage-project-resource-quotas/about-project-resource-quotas" hreflang="zh"><link data-rh="true" rel="alternate" href="http://docs.ranchermanager.rancher.io//how-to-guides/advanced-user-guides/manage-projects/manage-project-resource-quotas/about-project-resource-quotas" hreflang="x-default"><link data-rh="true" rel="preconnect" href="https://30NEY6C9UY-dsn.algolia.net" crossorigin="anonymous"><link rel="stylesheet" href="/zh/assets/css/styles.27db6f3b.css">
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 如果项目中的命名空间配置没有被覆盖，那么此限制会自动绑定到命名空间并强制执行。</p></li></ul><p>在下图中，Rancher 管理员想使用资源配额来为项目中的每个命名空间（<code>命名空间 1-4</code>）设置相同的 CPU 和内存限制。在 Rancher 中，管理员可以为项目设置资源配额（<code>项目资源配额</code>），而不需要为命名空间单独进行设置。此配额包括整个项目（<code>项目限制</code>）和单个命名空间（<code>命名空间默认限制</code>）的资源限制。然后，Rancher 会将<code>命名空间默认限制</code>的配额沿用到每个命名空间（<code>命名空间资源配额</code>）。</p><sup>Rancher：资源配额沿用到每个命名空间</sup><p><img loading="lazy" alt="Rancher 资源配额实现" src="/zh/assets/images/rancher-resource-quota-3c2bc9f34b4fe75494a937bee75a601a.png" width="1848" height="1178" class="img_ev3q"></p><p>以下介绍在 Rancher UI <strong><em>中</em></strong> 创建的命名空间的更细微的功能。如果你删除了项目级别的资源配额，无论命名空间层级是否有自定义的资源配额，项目内的所有命名空间也会移除这个资源配额。在项目层级修改已有的命名空间默认资源配额，不会影响命名空间内的资源配额，修改后的项目层级资源配额只会对以后新建的命名空间生效。要修改多个现有命名空间的默认限制，你可以在项目层级删除该限制，然后再使用新的默认值重新创建配额。这种方式会将新的默认值应用于项目中的所有现有命名空间。</p><p>在项目中创建命名空间之前，Rancher 会使用默认限制和覆盖限制来对比项目内的可用资源和请求资源。
 如果请求的资源超过了项目中这些资源的剩余容量，Rancher 将为命名空间分配该资源的剩余容量。</p><p>但是，在 Rancher 的 UI <strong><em>外</em></strong> 创建的命名空间的处理方法则不一样。对于通过 <code>kubectl</code> 创建的命名空间，如果请求的资源量多余项目内的余量，Rancher 会分配一个数值为 <strong>0</strong> 的资源配额。</p><p>要使用 <code>kubectl</code> 在现有项目中创建命名空间，请使用 <code>field.cattle.io/projectId</code> 注释。要覆盖默认的请求配额限制，请使用 <code>field.cattle.io/resourceQuota</code> 注释。</p><p>请注意，Rancher 只会覆盖项目配额上定义的资源限制。</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">apiVersion: v1</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">kind: Namespace</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">metadata:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  annotations:</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    field.cattle.io/projectId: [your-cluster-ID]:[your-project-ID]</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    field.cattle.io/resourceQuota: &#x27;{&quot;limit&quot;:{&quot;limitsCpu&quot;:&quot;100m&quot;, &quot;configMaps&quot;: &quot;50&quot;}}&#x27;</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  name: my-ns</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="复制代码到剪贴板" title="复制" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>在此示例中，如果项目配额在其资源列表中不包含 configMaps，那么 Rancher 将忽略此覆盖中的 <code>configMaps</code>。</p><p>对于项目中未定义的资源，建议你在命名空间中创建专用的 <code>ResourceQuota</code> 对象来配置其它自定义限制。
 资源配额是原生 Kubernetes 对象，如果命名空间属于具有配额的项目，Rancher 将忽略用户定义的配额，从而给予用户更多的控制权。</p><p>下表对比了 Rancher 和 Kubernetes 资源配额的主要区别：</p><table><thead><tr><th>Rancher 资源配额</th><th>Kubernetes 资源配额</th></tr></thead><tbody><tr><td>应用于项目和命名空间。</td><td>仅应用于命名空间。</td></tr><tr><td>为项目中的所有命名空间创建资源池。</td><td>将静态资源限制应用到单独的命名空间。</td></tr><tr><td>通过沿用的模式，将资源配额应用于各个命名空间。</td><td>仅应用于指定的命名空间。</td></tr></tbody></table></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/rancher/rancher-docs/edit/main/docs/how-to-guides/advanced-user-guides/manage-projects/manage-project-resource-quotas/about-project-resource-quotas.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_eYIM" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>编辑此页</a></div><div class="col lastUpdated_vbeJ"><span class="theme-last-updated">最后<!-- -->于 <b><time datetime="2022-10-25T20:41:06.000Z">2022/10/25</time></b> <!-- -->更新</span></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="文档分页导航"><a class="pagination-nav__link pagination-nav__link--prev" href="/zh/pages-for-subheaders/manage-project-resource-quotas"><div class="pagination-nav__sublabel">上一页</div><div class="pagination-nav__label">项目资源配额</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/zh/how-to-guides/advanced-user-guides/manage-projects/manage-project-resource-quotas/override-default-limit-in-namespaces"><div class="pagination-nav__sublabel">下一页</div><div class="pagination-nav__label">覆盖命名空间的默认限制</div></a></nav></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2022 SUSE Rancher. All Rights Reserved.</div></div></div></footer></div>
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