ingress-nginx-helm/docs/examples/static-ip/nginx-ingress.yaml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-nginx
spec:
  tls:
  # This assumes tls-secret exists.
  - secretName: tls-secret
  rules:
  - http:
      paths:
      - backend:
          # This assumes http-svc exists and routes to healthy endpoints.
          serviceName: http-svc
          servicePort: 80