The cluster was failing, and no one knew why. Traffic was stalling, users were stuck, and every log line felt like a riddle. The culprit: a misconfigured Kubernetes Ingress on AWS.
Accessing and managing Kubernetes Ingress in AWS should not feel like chasing shadows. Yet it often does. Between IAM permissions, service annotations, load balancer settings, and TLS certs, even seasoned teams lose hours. What you need is a clear path from cluster to public endpoint, without extra layers of pain.
Kubernetes Ingress on AWS is powered by the AWS Load Balancer Controller or NGINX Ingress Controller. Both need the right IAM permissions to manage AWS resources, usually provisioned with an IAM service account. For AWS Elastic Kubernetes Service (EKS), this means enabling OIDC for the cluster, creating an IAM policy, and binding it to the service account used by the Ingress controller. Without this, AWS denies any attempt to create or modify load balancers.
Once the Ingress controller is running, the manifest defines how traffic flows. A proper Ingress resource points to a Service that maps to your Pods, using hostnames, paths, and optional TLS rules. On AWS, annotations customize the behavior—like enabling SSL termination, redirecting HTTP to HTTPS, or selecting network vs. application load balancers. Each annotation changes how AWS provisions and configures the edge.