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+---
+title: "Use and Configure CoreDNS"
+date: 2024-06-05
+draft: false
+summary: "Learn how to use and Configure CoreDNS with Oracle Cloud Native Environment."
+tags: ["ocne", "lab", "tutorial", "ocne-k8s"]
+showDate: true
+---
+
+## Links
+
+:crescent_moon: [Lab](https://luna.oracle.com/lab/bdf64a85-fef5-485e-b7f1-67cb3c5820f3)
+
+:spiral_notepad: [Tutorial](https://docs.oracle.com/en/learn/ocne-coredns)
+
+## Details
+
+Dynamic Name System (DNS) provides a way to translate hostnames to IP addresses for systems located anywhere on your network or the Internet. CoreDNS provides the same DNS service within your Kubernetes cluster to ensure that all deployments on your Kubernetes cluster have a reliable communication mechanism between the pods and services it uses. CoreDNS resolves requests for hostnames to IP addresses within the Oracle Cloud Native Environment cluster.
+
+### Objectives
+
+In this tutorial, you will learn:
+
+   - How to configure and use CoreDNS
+   - Where to locate the CoreDNS configuration files and how to alter them
+
+### Prerequisites
+
+- Minimum of a 3-node Oracle Cloud Native Environment cluster:
+
+   - Operator node
+   - Kubernetes control plane node
+   - Kubernetes worker node
+
+- Each system should have Oracle Linux installed and configured with:
+
+   - An Oracle user account (used during the installation) with sudo access
+   - Key-based SSH, also known as password-less SSH, between the hosts
+   - Installation of Oracle Cloud Native Environment