Comprehensive Guide: Adding SSL Certification to Your k3s Cluster

napkin-selection (3).png

Hello there! Today, we're diving deep into the process of adding SSL certification to services deployed on a k3s cluster. By the end of this guide, you'll be able to securely serve your services over HTTPS, enhancing the security of your applications.

Table of Contents

  1. Introduction
  2. Prerequisites
  3. Installing cert-manager
  4. Creating an Issuer or ClusterIssuer
  5. Creating an Ingress Resource
  6. Configuring DNS
  7. Verifying Certificate Issuance
  8. Accessing Your Service
  9. Troubleshooting and Tips
  10. Advanced Topics
  11. Conclusion

Introduction

k3s is a lightweight Kubernetes distribution that's widely used in edge computing, IoT devices, CI environments, and more. Security is crucial for all applications, and encrypted communication via SSL/TLS certificates is essential. In this guide, we'll walk you through the process of automatically issuing and managing SSL certificates for services deployed on your k3s cluster using cert-manager and Let's Encrypt.

Prerequisites

Before we begin, make sure you have the following: