https://besterry.com/tags/kubernetes/Recent content in Kubernetes on Besterry — Linux & DevOps NotesHugoen-usMon, 22 Jul 2024 00:00:00 +0000https://besterry.com/posts/k8s-troubleshooting/Mon, 22 Jul 2024 00:00:00 +0000https://besterry.com/posts/k8s-troubleshooting/<p>When PagerDuty wakes you up about a Kubernetes cluster issue, the first 10 minutes matter. Here is the runbook I work through before anything else.</p> <h2 id="get-your-bearings">Get your bearings</h2> <p>First, confirm what&rsquo;s actually broken from the user side. Check the status page or synthetic monitor. Many &ldquo;outages&rdquo; are monitoring issues, not real problems.</p> <h2 id="cluster-level-check">Cluster-level check</h2> <pre><code>kubectl get nodes kubectl top nodes </code></pre> <p>Look for NotReady nodes and resource pressure. If multiple nodes are down, the problem is probably infrastructure — check the cloud provider console.</p>