I my case, I have a branch wise deployment in EKS 1.14 and I want to handle this with "regex" & Nginx ingress.

Scenario:- Let's say I have Branch B1 with service_A(apache service), Similarly under B2 with service_A((apache service) and so on and want to access the service via URL like:- apache-{branch_name}.example.com Note :- Branch B1/B2 is nothing but unique namespaces where same kind of service is running.

I need single ingress from where I can control all different branch URL

My example file:-

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: regex-ingress
  annotations:
    kubernetes.io/ingress.class: "nginx"
    cert-manager.io/cluster-issuer: "letsencrypt-prod"
spec:
  tls:
  - hosts:
    - '*.k8s.example.com'
    secretName: prod-crt
  rules:
  - host: {service_A-b1}.k8s.acko.in
    http:
      paths:
      - backend:
          serviceName: {service_A-b1} 
          servicePort: 80

  - host: {service_A-b2}.k8s.acko.in
    http:
      paths:
      - backend:
          serviceName: {service_A-b2}
          servicePort: 80