apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: pihole 
  annotations:
      nginx.ingress.kubernetes.io/rewrite-target: /admin/$1
spec:
  rules:
  - host: pihole.lan
    http:
        paths:
        - backend:
            serviceName: pihole-tcp
            servicePort: http
          path: /(.*)
          pathType: ImplementationSpecific