Install fails because v1beta1.external.metrics.k8s.io it's already installed

[ordonezf]

Report

Running helm install keda kedacore/keda --namespace keda fails with error

Error: rendered manifests contain a resource that already exists. Unable to continue with install: existing resource conflict: kind: APIService, namespace: , name: v1beta1.external.metrics.k8s.io

Expected Behavior

helm install keda kedacore/keda --namespace keda installs keda on cluster

Actual Behavior

There is an error because v1beta1.external.metrics.k8s.io already exists in our cluster since it's being installed by the datadog cluster agent

Steps to Reproduce the Problem

1. Install datadog cluster agent: https://docs.datadoghq.com/agent/cluster_agent/setup/?tab=helm
2. Try to install keda helm install keda kedacore/keda --namespace keda
3. Get an error

Logs from KEDA operator

example

KEDA Version

2.4.0

Kubernetes Version

1.19

Platform

Amazon Web Services

Scaler Details

Postgres

Anything else?

No response

[JorTurFer]

Could this be related with this other issue?
kubernetes-sigs/custom-metrics-apiserver#70

[ordonezf]

I didn't think to look there 😅
It seems to be the exact same problem. Do you have any idea if sharing the same resource between datadog and keda could be harmful?

[JorTurFer]

No problem!
Honestly, I haven't got any idea about it but maybe some one comment with extra information

[zroubalik]

Duplicate of #470

[zroubalik]

Unfortunately there could be only one instance of v1beta1.external.metrics.k8s.io in the cluster 🤷‍♂️