Let’s Encrypt kubernetes Ingress Controller issuing Fake Certificate

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Maybe would be helpful for someone experiencing similar issues. As for me, a forgot to specify hostname in Ingress yaml file for both rules and tls sections.
After duplicating the hostname, it started responding with a proper certificate.

Example:

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: test-web-ingress
  annotations:
    kubernetes.io/ingress.class: nginx
spec:
  tls:
  - hosts:
    - my.host.com                # <----
    secretName: tls-secret
  rules:
    - host: my.host.com          # <----
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              serviceName: my-nginx
              servicePort: 80

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