Chart conflicts with existing v1beta1.external.metrics.k8s.io resource

[guillaumelachaud]

Describe what happened:

helm install  datadog-monitoring \                                                                                                                                                                   
    --set datadog.apiKey=MY_KEY \
    --set datadog.appKey=MY_KEY\
    --set clusterAgent.enabled=true \
    --set clusterAgent.metricsProvider.enabled=true \
    datadog/datadog

Error: rendered manifests contain a resource that already exists. Unable to continue with install: APIService "v1beta1.external.metrics.k8s.io" in namespace "" exists and cannot be imported into the current release: invalid ownership metadata; label validation error: missing key "app.kubernetes.io/managed-by": must be set to "Helm"; annotation validation error: missing key "meta.helm.sh/release-name": must be set to "datadog-monitoring"; annotation validation error: missing key "meta.helm.sh/release-namespace": must be set to "datadog"

Describe what you expected:
Chart would have been installed properly

Steps to reproduce the issue:
Run the commands from the README on a cluster that already have some external metrics such as https://github.com/awslabs/k8s-cloudwatch-adapter

Additional environment details (Operating System, Cloud provider, etc):
EKS, with K8s 1.17

[ahmed-mez]

Hey @guillaumelachaud, this is actually a limitation in Kubernetes itself as it doesn't allow multiple external metric providers (see kubernetes-sigs/custom-metrics-apiserver#70). Thanks!