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<title data-rh="true">Rancher Integration with Logging Services | Rancher</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://ranchermanager.docs.rancher.com/pages-for-subheaders/logging"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><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 Integration with Logging Services | Rancher"><meta data-rh="true" name="description" content="Rancher integrates with popular logging services. Learn the requirements and benefits of integrating with logging services, and enable logging on your cluster."><meta data-rh="true" property="og:description" content="Rancher integrates with popular logging services. Learn the requirements and benefits of integrating with logging services, and enable logging on your cluster."><link data-rh="true" rel="icon" href="/img/favicon.png"><link data-rh="true" rel="alternate" href="https://ranchermanager.docs.rancher.com/pages-for-subheaders/logging" hreflang="en"><link data-rh="true" rel="alternate" href="https://ranchermanager.docs.rancher.com/zh/pages-for-subheaders/logging" hreflang="zh"><link data-rh="true" rel="alternate" href="https://ranchermanager.docs.rancher.com/pages-for-subheaders/logging" hreflang="x-default"><link data-rh="true" rel="preconnect" href="https://30NEY6C9UY-dsn.algolia.net" crossorigin="anonymous"><link data-rh="true" rel="canonical" href="https://ranchermanager.docs.rancher.com/pages-for-subheaders/logging"><link rel="preconnect" href="https://www.googletagmanager.com">
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class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Integrations in Rancher</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Logging</span><meta itemprop="position" content="2"></li></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: Latest</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Rancher Integration with Logging Services</h1></header><p>The <a href="https://kube-logging.github.io/docs/" target="_blank" rel="noopener noreferrer">Logging operator</a> now powers Rancher&#x27;s logging solution in place of the former, in-house solution.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="enabling-logging">Enabling Logging<a href="#enabling-logging" class="hash-link" aria-label="Direct link to Enabling Logging" title="Direct link to Enabling Logging">​</a></h2><p>You can enable the logging for a Rancher managed cluster by going to the Apps page and installing the logging app.</p><ol><li>Go to the cluster where you want to install logging and click <strong>Apps</strong>.</li><li>Click the <strong>Logging</strong> app.</li><li>Scroll to the bottom of the Helm chart README and click <strong>Install</strong>.</li></ol><p><strong>Result:</strong> The logging app is deployed in the <code>cattle-logging-system</code> namespace.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="uninstall-logging">Uninstall Logging<a href="#uninstall-logging" class="hash-link" aria-label="Direct link to Uninstall Logging" title="Direct link to Uninstall Logging">​</a></h2><ol><li>Go to the cluster where you want to install logging and click <strong>Apps</strong>.</li><li>Click <strong>Installed Apps</strong>.</li><li>Go to the <code>cattle-logging-system</code> namespace and check the boxes for <code>rancher-logging</code> and <code>rancher-logging-crd</code>.</li><li>Click <strong>Delete</strong>.</li><li>Confirm <strong>Delete</strong>.</li></ol><p><strong>Result</strong> <code>rancher-logging</code> is uninstalled.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="architecture">Architecture<a href="#architecture" class="hash-link" aria-label="Direct link to Architecture" title="Direct link to Architecture">​</a></h2><p>For more information about how the logging application works, see <a href="/integrations-in-rancher/logging/logging-architecture">this section.</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="role-based-access-control">Role-based Access Control<a href="#role-based-access-control" class="hash-link" aria-label="Direct link to Role-based Access Control" title="Direct link to Role-based Access Control">​</a></h2><p>Rancher logging has two roles, <code>logging-admin</code> and <code>logging-view</code>. For more information on how and when to use these roles, see <a href="/integrations-in-rancher/logging/rbac-for-logging">this page.</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="configuring-logging-custom-resources">Configuring Logging Custom Resources<a href="#configuring-logging-custom-resources" class="hash-link" aria-label="Direct link to Configuring Logging Custom Resources" title="Direct link to Configuring Logging Custom Resources">​</a></h2><p>To manage <code>Flows,</code> <code>ClusterFlows</code>, <code>Outputs</code>, and <code>ClusterOutputs</code>,</p><ol><li>In the upper left corner, click <strong>☰ &gt; Cluster Management</strong>.</li><li>On the <strong>Clusters</strong> page, go to the cluster where you want to configure logging custom resources and click <strong>Explore</strong>.</li><li>In the left navigation bar, click <strong>Logging</strong>.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="flows-and-clusterflows">Flows and ClusterFlows<a href="#flows-and-clusterflows" class="hash-link" aria-label="Direct link to Flows and ClusterFlows" title="Direct link to Flows and ClusterFlows">​</a></h3><p>For help with configuring <code>Flows</code> and <code>ClusterFlows</code>, see <a href="/integrations-in-rancher/logging/custom-resource-configuration/flows-and-clusterflows">this page.</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="outputs-and-clusteroutputs">Outputs and ClusterOutputs<a href="#outputs-and-clusteroutputs" class="hash-link" aria-label="Direct link to Outputs and ClusterOutputs" title="Direct link to Outputs and ClusterOutputs">​</a></h3><p>For help with configuring <code>Outputs</code> and <code>ClusterOutputs</code>, see <a href="/integrations-in-rancher/logging/custom-resource-configuration/outputs-and-clusteroutputs">this page.</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="configuring-the-logging-helm-chart">Configuring the Logging Helm Chart<a href="#configuring-the-logging-helm-chart" class="hash-link" aria-label="Direct link to Configuring the Logging Helm Chart" title="Direct link to Configuring the Logging Helm Chart">​</a></h2><p>For a list of options that can be configured when the logging application is installed or upgraded, see <a href="/integrations-in-rancher/logging/logging-helm-chart-options">this page.</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="windows-support">Windows Support<a href="#windows-support" class="hash-link" aria-label="Direct link to Windows Support" title="Direct link to Windows Support">​</a></h3><p>You can <a href="/integrations-in-rancher/logging/logging-helm-chart-options#enabledisable-windows-node-logging">enable logging</a> from Windows nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="working-with-a-custom-docker-root-directory">Working with a Custom Docker Root Directory<a href="#working-with-a-custom-docker-root-directory" class="hash-link" aria-label="Direct link to Working with a Custom Docker Root Directory" title="Direct link to Working with a Custom Docker Root Directory">​</a></h3><p>For details on using a custom Docker root directory, see <a href="/integrations-in-rancher/logging/logging-helm-chart-options#working-with-a-custom-docker-root-directory">this section.</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="working-with-taints-and-tolerations">Working with Taints and Tolerations<a href="#working-with-taints-and-tolerations" class="hash-link" aria-label="Direct link to Working with Taints and Tolerations" title="Direct link to Working with Taints and Tolerations">​</a></h3><p>For information on how to use taints and tolerations with the logging application, see <a href="/integrations-in-rancher/logging/taints-and-tolerations">this page.</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="logging-v2-with-selinux">Logging V2 with SELinux<a href="#logging-v2-with-selinux" class="hash-link" aria-label="Direct link to Logging V2 with SELinux" title="Direct link to Logging V2 with SELinux">​</a></h3><p>For information on enabling the logging application for SELinux-enabled nodes, see <a href="/integrations-in-rancher/logging/logging-helm-chart-options#enabling-the-logging-application-to-work-with-selinux">this section.</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="additional-logging-sources">Additional Logging Sources<a href="#additional-logging-sources" class="hash-link" aria-label="Direct link to Additional Logging Sources" title="Direct link to Additional Logging Sources">​</a></h3><p>By default, Rancher collects logs for control plane components and node components for all cluster types. In some cases additional logs can be collected. For details, see <a href="/integrations-in-rancher/logging/logging-helm-chart-options#additional-logging-sources">this section.</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="troubleshooting">Troubleshooting<a href="#troubleshooting" class="hash-link" aria-label="Direct link to Troubleshooting" title="Direct link to Troubleshooting">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="the-logging-buffer-overloads-pods">The Logging Buffer Overloads Pods<a href="#the-logging-buffer-overloads-pods" class="hash-link" aria-label="Direct link to The Logging Buffer Overloads Pods" title="Direct link to The Logging Buffer Overloads Pods">​</a></h3><p>Depending on your configuration, the default buffer size may be too large and cause pod failures. One way to reduce the load is to lower the logger&#x27;s flush interval. This prevents logs from overfilling the buffer. You can also add more flush threads to handle moments when many logs are attempting to fill the buffer at once.</p><p>For a more complete description of how to configure the logging buffer to suit your organization&#x27;s needs, see the official Logging operator documentation on <a href="https://kube-logging.github.io/docs/configuration/plugins/outputs/buffer/" target="_blank" rel="noopener noreferrer">buffers</a> and on <a href="https://kube-logging.github.io/docs/logging-infrastructure/fluentd/" target="_blank" rel="noopener noreferrer">Fluentd configuration</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="the-cattle-logging-namespace-being-recreated">The <code>cattle-logging</code> Namespace Being Recreated<a href="#the-cattle-logging-namespace-being-recreated" class="hash-link" aria-label="Direct link to the-cattle-logging-namespace-being-recreated" title="Direct link to the-cattle-logging-namespace-being-recreated">​</a></h3><p>If your cluster previously deployed logging from the global view in the legacy Rancher UI, you may encounter an issue where its <code>cattle-logging</code> namespace is continually being recreated.</p><p>The solution is to delete all <code>clusterloggings.management.cattle.io</code> and <code>projectloggings.management.cattle.io</code> custom resources from the cluster specific namespace in the management cluster.
The existence of these custom resources causes Rancher to create the <code>cattle-logging</code> namespace in the downstream cluster if it does not exist.</p><p>The cluster namespace matches the cluster ID, so we need to find the cluster ID for each cluster.</p><ol><li>In the upper left corner, click <strong>☰ &gt; Cluster Management</strong>.</li><li>On the <strong>Clusters</strong> page, go to the cluster you want to get the ID of and click <strong>Explore</strong>.</li><li>Copy the <code>&lt;cluster-id&gt;</code> portion from one of the URLs below. The <code>&lt;cluster-id&gt;</code> portion is the cluster namespace name.</li></ol><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Cluster Management UI</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">https://</span><span class="token operator" style="color:rgb(137, 221, 255)">&lt;</span><span class="token plain">your-url</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain">/c/</span><span class="token operator" style="color:rgb(137, 221, 255)">&lt;</span><span class="token plain">cluster-id</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain">/</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic"># Cluster Dashboard</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">https://</span><span class="token operator" style="color:rgb(137, 221, 255)">&lt;</span><span class="token plain">your-url</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain">/dashboard/c/</span><span class="token operator" style="color:rgb(137, 221, 255)">&lt;</span><span class="token plain">cluster-id</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain">/</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" 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>Now that we have the <code>&lt;cluster-id&gt;</code> namespace, we can delete the CRs that cause <code>cattle-logging</code> to be continually recreated.
<em>Warning:</em> ensure that logging, the version installed from the global view in the legacy Rancher UI, is not currently in use.</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">kubectl delete crd clusterloggings.management.cattle.io -n </span><span class="token operator" style="color:rgb(137, 221, 255)">&lt;</span><span class="token plain">cluster-id</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">kubectl delete crd projectloggings.management.cattle.io -n </span><span class="token operator" style="color:rgb(137, 221, 255)">&lt;</span><span class="token plain">cluster-id</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" 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></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/pages-for-subheaders/logging.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_Z9Sw" 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>Edit this page</a></div><div class="col lastUpdated_vwxv"><span class="theme-last-updated">Last updated<!-- --> on <b><time datetime="2023-08-15T19:24:51.000Z">Aug 15, 2023</time></b></span></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/integrations-in-rancher/longhorn"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Longhorn - Cloud native distributed block storage for Kubernetes</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/integrations-in-rancher/logging/logging-architecture"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Architecture</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#enabling-logging" class="table-of-contents__link toc-highlight">Enabling Logging</a></li><li><a href="#uninstall-logging" class="table-of-contents__link toc-highlight">Uninstall Logging</a></li><li><a href="#architecture" class="table-of-contents__link toc-highlight">Architecture</a></li><li><a href="#role-based-access-control" class="table-of-contents__link toc-highlight">Role-based Access Control</a></li><li><a href="#configuring-logging-custom-resources" class="table-of-contents__link toc-highlight">Configuring Logging Custom Resources</a><ul><li><a href="#flows-and-clusterflows" class="table-of-contents__link toc-highlight">Flows and ClusterFlows</a></li><li><a href="#outputs-and-clusteroutputs" class="table-of-contents__link toc-highlight">Outputs and ClusterOutputs</a></li></ul></li><li><a href="#configuring-the-logging-helm-chart" class="table-of-contents__link toc-highlight">Configuring the Logging Helm Chart</a><ul><li><a href="#windows-support" class="table-of-contents__link toc-highlight">Windows Support</a></li><li><a href="#working-with-a-custom-docker-root-directory" class="table-of-contents__link toc-highlight">Working with a Custom Docker Root Directory</a></li><li><a href="#working-with-taints-and-tolerations" class="table-of-contents__link toc-highlight">Working with Taints and Tolerations</a></li><li><a href="#logging-v2-with-selinux" class="table-of-contents__link toc-highlight">Logging V2 with SELinux</a></li><li><a href="#additional-logging-sources" class="table-of-contents__link toc-highlight">Additional Logging Sources</a></li></ul></li><li><a href="#troubleshooting" class="table-of-contents__link toc-highlight">Troubleshooting</a><ul><li><a href="#the-logging-buffer-overloads-pods" class="table-of-contents__link toc-highlight">The Logging Buffer Overloads Pods</a></li><li><a href="#the-cattle-logging-namespace-being-recreated" class="table-of-contents__link toc-highlight">The <code>cattle-logging</code> Namespace Being Recreated</a></li></ul></li></ul></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 © 2023 SUSE Rancher. 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