Overview
In the dynamic landscape of cloud-native applications, effectively managing ingress traffic, securing communications with SSL/TLS, and automating DNS record management are paramount for robust and scalable deployments. While Kubernetes provides the fundamental building blocks, orchestrating these aspects seamlessly on Amazon Elastic Kubernetes Service (EKS) requires a powerful combination of specialized tools. This article delves into integrating the Nginx Ingress Controller with cert-manager for automated certificate provisioning and external-dns for dynamic DNS updates, creating a fully automated, secure, and highly available ingress solution on EKS.
The Nginx Ingress Controller acts as the entry point for external traffic into your Kubernetes cluster, routing requests to the appropriate services based on defined rules. It extends the capabilities of the native Kubernetes Ingress resource, offering advanced features like URL rewriting, custom error pages, and sophisticated traffic management policies. Securing this traffic is handled by cert-manager, a native Kubernetes certificate management controller. It automates the issuance and renewal of SSL/TLS certificates from various sources, most notably Let's Encrypt, ensuring your applications always have valid certificates without manual intervention. Complementing these, external-dns watches Kubernetes Ingress and Service resources, automatically creating and updating DNS records in external DNS providers like AWS Route 53. Together, these three components form a formidable stack, simplifying the operational complexities of exposing applications securely on