request help: Apisix upstream not found

[vga-diver]

Issue description

Hello,
I'm just starting using Apisix with Apisix Ingress Controller in our Kubernetes environment (in AWS).

We need to create the hybrid ingress controller which is able to forward traffic either to the k8s PODs or to EC2 instances outside or to some URL.

I noticed that it is possible to use apisix upstream for that purpose ( namespace: rc-apps).
I've tried the following configuration:

apiVersion: apisix.apache.org/v2
kind: ApisixUpstream
metadata:
  name: external-app-upstream
spec:
  externalNodes:
  - type: Domain
    name: ext-app.my.local

and getting the following error in ingest controller:

2024-11-29T21:15:47+08:00	error	apisix/apisix_upstream.go:376	failed to get upstream rc-apps_external-app-upstream: not found
2024-11-29T21:15:47+08:00	warn	apisix/apisix_upstream.go:489	sync ApisixUpstream failed, will retry	{"object": {"Type":1,"Object":{"Key":"rc-apps/external-app-upstream","OldObject":null,"GroupVersion":"apisix.apache.org/v2"},"OldObject":null,"Tombstone":null}, "error": "not found"}

I've tried to make different and try to configure upstream to external service:

apiVersion: apisix.apache.org/v2
kind: ApisixRoute
metadata:
  name: custom-ingress-creators-support-backend
  namespace: rc-apps
spec:
  http:
    - name: api
      match:
        hosts:
        - new-app.my.local
        paths:
        - /api
      upstreams:
      - name: ext-upstream
---
apiVersion: apisix.apache.org/v2
kind: ApisixUpstream
metadata:
  name: ext-upstream
  namespace: rc-apps
spec:
  externalNodes:
  - type: Service
    name: ext-service

and got the following errors:

2024-11-29T21:23:04+08:00	error	translation/apisix_route.go:238	failed to translate ApisixUpstream at Upstream[0]	{"error": "service \"ext-service\" not found", "apisix_upstream": "rc-apps/ext-upstream"}
2024-11-29T21:23:04+08:00	error	apisix/route.go:138	failed to create route: unexpected status code 400; error message: {"error_msg":"failed to fetch upstream info by upstream id [c89ce48d], response code: 404"}

Environment

• your apisix-ingress-controller version (output of apisix-ingress-controller version --long): apache/apisix-ingress-controller:1.8.0
  apisix: apache/apisix:3.11.0-debian
• your Kubernetes cluster version (output of kubectl version):
  Client Version: v1.30.2
  Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
  Server Version: v1.29.10-eks-7f9249a
• if you run apisix-ingress-controller in Bare-metal environment, also show your OS version (uname -a):