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<link rel="alternate" type="application/atom+xml" href="/blog/atom.xml" title="foomo project docs Atom Feed"><title data-react-helmet="true">Spot Instance Node Pools | foomo project docs</title><meta data-react-helmet="true" name="twitter:card" content="summary_large_image"><meta data-react-helmet="true" property="og:url" content="https://www.foomo.org//docs/devops/kubernetes/spot-instance-node-pools"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_version" content="current"><meta data-react-helmet="true" name="docusaurus_tag" content="docs-default-current"><meta data-react-helmet="true" property="og:title" content="Spot Instance Node Pools | foomo project docs"><meta data-react-helmet="true" name="description" content="Setting up spot instance node pools is a great way to save money on stateless applications"><meta data-react-helmet="true" property="og:description" content="Setting up spot instance node pools is a great way to save money on stateless applications"><link data-react-helmet="true" rel="icon" href="/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://www.foomo.org//docs/devops/kubernetes/spot-instance-node-pools"><link data-react-helmet="true" rel="alternate" href="https://www.foomo.org//docs/devops/kubernetes/spot-instance-node-pools" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://www.foomo.org//docs/devops/kubernetes/spot-instance-node-pools" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.03427991.css">
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class="theme-doc-markdown markdown"><header><h1>Spot Instance Node Pools</h1></header><p>Setting up spot instance node pools is a great way to save money on stateless applications</p><h2 class="anchor anchorWithStickyNavbar_y2LR" id="setting-up-node-taints">Setting Up Node Taints<a class="hash-link" href="#setting-up-node-taints" title="Direct link to heading"></a></h2><h2 class="anchor anchorWithStickyNavbar_y2LR" id="setting-up-pod-toleration">Setting Up Pod Toleration<a class="hash-link" href="#setting-up-pod-toleration" title="Direct link to heading"></a></h2><h3 class="anchor anchorWithStickyNavbar_y2LR" id="pod-toleration">Pod Toleration<a class="hash-link" href="#pod-toleration" title="Direct link to heading"></a></h3><h3 class="anchor anchorWithStickyNavbar_y2LR" id="daemonset-toleration">DaemonSet Toleration<a class="hash-link" href="#daemonset-toleration" title="Direct link to heading"></a></h3><p>Don't forget to set the daemonset tolerations</p><h2 class="anchor anchorWithStickyNavbar_y2LR" id="setting-up-pod-disruption-budgets">Setting Up Pod Disruption Budgets<a class="hash-link" href="#setting-up-pod-disruption-budgets" title="Direct link to heading"></a></h2><p>Setting up a pod disruption budget is important due to erratic node shutdown possibility.
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What could happen is that nodes that are hosting the applications start terminating, and our application becomes
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unresponsive until the application is re-located to another node.
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To avoid that situation, for the instances we need to configure pod disruption budget on our helm deployments.</p><div class="codeBlockContainer_J+bg language-yaml theme-code-block"><div class="codeBlockContent_csEI yaml"><pre tabindex="0" class="prism-code language-yaml codeBlock_rtdJ thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_1zSZ"><span class="token-line" style="color:#bfc7d5"><span class="token key atrule">apiVersion</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> policy/v1</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token key atrule">kind</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> PodDisruptionBudget</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token key atrule">metadata</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">name</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> application</span><span class="token punctuation" style="color:rgb(199, 146, 234)">-</span><span class="token plain">name</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token key atrule">spec</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">maxAvailable</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> 50%</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">selector</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">matchLabels</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> </span><span class="token key atrule">app</span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> application</span><span class="token punctuation" style="color:rgb(199, 146, 234)">-</span><span class="token plain">name</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block"></span><br></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_M3SB clean-btn">Copy</button></div></div><p>For more details check out <a href="https://kubernetes.io/docs/tasks/run-application/configure-pdb/" target="_blank" rel="noopener noreferrer">here</a></p><h2 class="anchor anchorWithStickyNavbar_y2LR" id="setting-up-termination-handling">Setting Up Termination Handling<a class="hash-link" href="#setting-up-termination-handling" title="Direct link to heading"></a></h2><h2 class="anchor anchorWithStickyNavbar_y2LR" id="setting-up-k8s-cron-shutdown-cleanup">Setting Up K8s Cron Shutdown Cleanup<a class="hash-link" href="#setting-up-k8s-cron-shutdown-cleanup" title="Direct link to heading"></a></h2></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/foomo/foomo-docs/tree/main/foomo/docs/devops/kubernetes/spot-instance-node-pools.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg 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class="table-of-contents table-of-contents__left-border"><li><a href="#setting-up-node-taints" class="table-of-contents__link toc-highlight">Setting Up Node Taints</a></li><li><a href="#setting-up-pod-toleration" class="table-of-contents__link toc-highlight">Setting Up Pod Toleration</a><ul><li><a href="#pod-toleration" class="table-of-contents__link toc-highlight">Pod Toleration</a></li><li><a href="#daemonset-toleration" class="table-of-contents__link toc-highlight">DaemonSet Toleration</a></li></ul></li><li><a href="#setting-up-pod-disruption-budgets" class="table-of-contents__link toc-highlight">Setting Up Pod Disruption Budgets</a></li><li><a href="#setting-up-termination-handling" class="table-of-contents__link toc-highlight">Setting Up Termination Handling</a></li><li><a href="#setting-up-k8s-cron-shutdown-cleanup" class="table-of-contents__link toc-highlight">Setting Up K8s Cron Shutdown Cleanup</a></li></ul></div></div></div></div></main></div></div><footer class="footer"><div 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