Singleton ALB ingress controller fronting Nginx for Amazon EKS

alb-ingress-singleton.yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: "myALB"
  labels:
    app: "myALBApp"
  annotations:
    # trigger the alb-ingress-controller
    kubernetes.io/ingress.class: "alb"
    
    # set ALB parameters
    alb.ingress.kubernetes.io/scheme: "internet-facing"
    alb.ingress.kubernetes.io/target-type: "instance"
    alb.ingress.kubernetes.io/security-groups: my-security-group-ids, ...
    alb.ingress.kubernetes.io/subnets: my-vpc-subnets, ...
    alb.ingress.kubernetes.io/certificate-arn: my-acm-certificate-arn
    alb.ingress.kubernetes.io/listen-ports: '[{"HTTP":80,"HTTPS": 443}]'

    # allow 404s on the health check
    alb.ingress.kubernetes.io/healthcheck-path: "/"
    alb.ingress.kubernetes.io/success-codes: "200,404"
spec:
  # forward all requests to nginx-ingress-controller
  rules:
  - http:
      paths:
      - path: "/*"
        backend:
          serviceName: "nginx-ingress-controller"
          servicePort: 80

I believe the path on line 27 should be "/*".

Corrected, thank you @kekbur!

Is there a suitable full example for this? We tried this and found out nginx-controller was in its own namespace and thus neverfound...

Sorry, I don't have a complete example. Regarding namespaces, nginx-controller's Ingress routing can "see through" namespace boundaries (in the default configuration), so as long as the ALB can see nginx, then the underlying services can be in other namespaces.

Following the example, I get failed to reconcile targetGroups due to failed to load serviceAnnotation due to no object matching key