kubespray/roles/kubernetes-apps/ingress_controller/ingress_nginx/templates/ingressclass-nginx.yml.j2

apiVersion: networking.k8s.io/v1
kind: IngressClass
metadata:
  name: {{ ingress_nginx_class }}
  labels:
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
{% if ingress_nginx_default %}
  annotations:
    ingressclass.kubernetes.io/is-default-class: "true"
{% endif %}
spec:
  controller: k8s.io/ingress-nginx