Kubernetes ingress域名重定向

我想在ingress kubernete重定向域名：

https://test.example.io/preview/qLxiVcDGxCaQ134650121853FTg4

重定向到：

https://test.app.example.io/preview/qLxiVcDGxCaQ134650121853FTg4

我尝试：

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  annotations:
    certmanager.k8s.io/cluster-issuer: staging
    nginx.ingress.kubernetes.io/rewrite-target: /
    kubernetes.io/ingress.class: nginx
  name: staging-ingress
spec:
  rules:
  - host: test.example.io
    http:
      paths:
      - path: /
        backend:
          serviceName: service-1
          servicePort: 80
      - path: /preview/*
        backend:
          url: 
          serviceName: service-2
          servicePort: 80
  tls:
  - hosts:
    - test.example.io
    secretName: staging

对于简单的nginx block像：

location ~ /preview
    {
      rewrite /preview https://test.app.example.com$uri permanent;
    }