[{"title":"Feature labels","layout":"default","sort":1,"content":"<h1 class=\"no_toc\" id=\"feature-labels\">Feature labels</h1>\n\n<h2 class=\"no_toc text-delta\" id=\"table-of-contents\">Table of contents</h2>\n\n<ol id=\"markdown-toc\">\n <li><a href=\"#built-in-labels\" id=\"markdown-toc-built-in-labels\">Built-in labels</a> <ol>\n <li><a href=\"#cpu\" id=\"markdown-toc-cpu\">CPU</a></li>\n <li><a href=\"#kernel\" id=\"markdown-toc-kernel\">Kernel</a></li>\n <li><a href=\"#memory\" id=\"markdown-toc-memory\">Memory</a></li>\n <li><a href=\"#network\" id=\"markdown-toc-network\">Network</a></li>\n <li><a href=\"#pci\" id=\"markdown-toc-pci\">PCI</a></li>\n <li><a href=\"#usb\" id=\"markdown-toc-usb\">USB</a></li>\n <li><a href=\"#storage\" id=\"markdown-toc-storage\">Storage</a></li>\n <li><a href=\"#system\" id=\"markdown-toc-system\">System</a></li>\n <li><a href=\"#custom\" id=\"markdown-toc-custom\">Custom</a></li>\n </ol>\n </li>\n <li><a href=\"#user-defined-labels\" id=\"markdown-toc-user-defined-labels\">User defined labels</a></li>\n <li><a href=\"#extended-resources\" id=\"markdown-toc-extended-resources\">Extended resources</a></li>\n</ol>\n\n<hr />\n\n<p>Features are advertised as labels in the Kubernetes Node object.</p>\n\n<h2 id=\"built-in-labels\">Built-in labels</h2>\n\n<p>Label creation in nfd-worker is performed by a set of separate modules called\nlabel sources. The\n<a href=\"../reference/worker-configuration-reference#corelabelsources\"><code class=\"language-plaintext highlighter-rouge\">core.labelSources</code></a>\nconfiguration option (or\n<a href=\"../reference/worker-commandline-reference#-label-sources\"><code class=\"language-plaintext highlighter-rouge\">-label-sources</code></a>\nflag) of nfd-worker controls which sources to enable for label generation.</p>\n\n<p>All built-in labels use the <code class=\"language-plaintext highlighter-rouge\">feature.node.kubernetes.io</code> label namespace and\nhave the following format.</p>\n\n<div class=\"language-plaintext highlighter-rouge\"><div class=\"highlight\"><pre class=\"highlight\"><code>feature.node.kubernetes.io/<feature> = <value>\n</code></pre> </div></div>\n\n<blockquote>\n <p>NOTE: Consecutive runs of nfd-worker will update the labels on a\ngiven node. If features are not discovered on a consecutive run, the corresponding\nlabel will be removed. This includes any restrictions placed on the consecutive run,\nsuch as restricting discovered features with the\n<a href=\"../reference/master-commandline-reference#-label-whitelist\"><code class=\"language-plaintext highlighter-rouge\">-label-whitelist</code></a>\nflag of nfd-master or\n<a href=\"../reference/worker-configuration-reference#corelabelwhitelist\"><code class=\"language-plaintext highlighter-rouge\">core.labelWhiteList</code></a>\noption of nfd-worker.</p>\n</blockquote>\n\n<h3 id=\"cpu\">CPU</h3>\n\n<table>\n <thead>\n <tr>\n <th>Feature name</th>\n <th>Value</th>\n <th>Description</th>\n </tr>\n </thead>\n <tbody>\n <tr>\n <td><strong><code class=\"language-plaintext highlighter-rouge\">cpu-cpuid.<cpuid-flag></code></strong></td>\n <td>true</td>\n <td>CPU capability is supported. <strong>NOTE:</strong> the capability might be supported but not enabled.</td>\n </tr>\n <tr>\n <td><strong><code class=\"language-plaintext highlighter-rouge\">cpu-hardware_multithreading</code></strong></td>\n <td>true</td>\n <td>Hardware multithreading, such as Intel HTT, enabled (number of logical CPUs is greater than physical CPUs)</td>\n </tr>\n <tr>\n <td><strong><code class=\"language-plaintext highlighter-rouge\">cpu-power.sst_bf.enabled</code></strong></td>\n <td>true</td>\n <td>Intel SST-BF (<a href=\"https://www.intel.com/content/www/us/en/architecture-and-technology/speed-select-technology-article.html\">Intel Speed Select Technology</a> - Base frequency) enabled</td>\n </tr>\n <tr>\n <td><strong><code class=\"language-plaintext highlighter-rouge\">cpu-pstate.status</code></strong></td>\n <td>string</td>\n <td>The status of the <a href=\"https://www.kernel.org/doc/Doc
