I have this yaml for an Ingress:

kind: Ingress
apiVersion: extensions/v1beta1
metadata:
  name: app
  namespace: ingress-controller
... omitted for brevity ...
spec:
  rules:
    - host: ifs-alpha-kube-001.example.com
      http:
        paths:
          - path: /
            pathType: ImplementationSpecific
            backend:
              serviceName: service-nodeport
              servicePort: 80
          - path: /
            pathType: ImplementationSpecific
            backend:
              serviceName: service-nodeport
              servicePort: 443
status:
  loadBalancer:
    ingress:
      - {}

In the above I set ...

    - host: ifs-alpha-kube-001.example.com

That host just happens to be one of my nodes. I have three nodes. I am pretty certain that this incorrect. The ingress works but if I shutdown ifs-alpha-kube-001 the ingress stops working. What should I set host if I want a high availability cluster?

Thanks