KEDA: scaleTargetRef.name is not updated correctly

[cesar32az]

What happened?

I am using keda with kustomize and when adding the namePrefix and nameSuffix properties in the kustomization.yaml, the value of scaleTargetRef.name of the KEDA ScaledObject is not updated correctly

What did you expect to happen?

what is expected is that the scaleTargetRef.name of the KEDA ScaledObject is updated correctly with the namePrefix and nameSuffix properties

How can we reproduce it (as minimally and precisely as possible)?

# kustomization.yaml
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization

namePrefix: hello-
nameSuffix: -world

resources:
  - scaled-object.yaml
  - deployment.yaml

# scaled-object.yaml
apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: example-scaledobject
spec:
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: example-deployment
  minReplicaCount: 0
  maxReplicaCount: 100
  triggers:
    - type: example-trigger
      metadata:
        property: examle-property

# deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: example-deployment
spec:
  selector:
    matchLabels:
      app: example-deployment
  template:
    metadata:
      labels:
        app: example-deployment
    spec:
      containers:
      - name: example-deployment
        image: example-image

Expected output

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-example-deployment-world
spec:
  selector:
    matchLabels:
      app: example-deployment
  template:
    metadata:
      labels:
        app: example-deployment
    spec:
      containers:
      - image: example-image
        name: example-deployment
---
apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: hello-example-scaledobject-world
spec:
  maxReplicaCount: 100
  minReplicaCount: 0
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: hello-example-deployment-world # correct name
  triggers:
  - metadata:
      property: examle-property
    type: example-trigger

Actual output

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-example-deployment-world
spec:
  selector:
    matchLabels:
      app: example-deployment
  template:
    metadata:
      labels:
        app: example-deployment
    spec:
      containers:
      - image: example-image
        name: example-deployment
---
apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: hello-example-scaledobject-world
spec:
  maxReplicaCount: 100
  minReplicaCount: 0
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: example-deployment
  triggers:
  - metadata:
      property: examle-property # incorrect name
    type: example-trigger

Kustomize version

5.1.0

Operating system

Linux

[pawndev]

Maybe you can add a kustomconfig.yaml with a specific transformer for name reference: https://github.com/kubernetes-sigs/kustomize/blob/master/examples/transformerconfigs/README.md#name-reference-transformer

Something like:

nameReference:
  - kind: ScaledObject
    fieldSpecs:
      - path: spec/scaleTargetRef/name

and then reference it in your kustomization.yaml with:

configurations:
  - kustomconfig.yaml

I didn't test it, so it could not be working

[annasong20]

Hi @cesar32az, see my response to #5496. In short, Kustomize does not recognize keda, so you need to teach it about keda's field structure. Converting to discussion. Also feel free to ask questions in the Kustomize Slack channel.
/kind support
/remove-kind bug
/triage resolved