https://www.compilemymind.com/tags/coredns/ Recent content in Coredns on Compile My Mind Hugo en Sun, 26 Jul 2026 19:00:00 +0200 https://www.compilemymind.com/posts/troubleshoot-kubernetes-dns-resolution-pods/ Tue, 21 Jul 2026 17:25:18 +0300 https://www.compilemymind.com/posts/troubleshoot-kubernetes-dns-resolution-pods/ <p>“The pod cannot reach <code>orders</code>” describes at least four different failures:</p> <ol> <li>The pod generated a different DNS query than expected.</li> <li>Cluster DNS did not answer correctly.</li> <li>DNS resolved, but the Service virtual IP was unreachable.</li> <li>The Service was reachable, but no healthy backend served the request.</li> </ol> <p>Changing CoreDNS before locating the failing layer usually adds noise. Start inside the affected pod or namespace and move outward one boundary at a time.</p>