[stable/prometheus-adapter] not able to get data from /apis/external.metrics.k8s.io/v1beta1/

[rnkhouse]

I am not able to fetch items by running this command: kubectl get --raw "/apis/external.metrics.k8s.io/v1beta1/namespaces/default/rabbitmq_queue_messages_ready" | jq

As you can see in below output items is an empty array:

{
  "kind": "ExternalMetricValueList",
  "apiVersion": "external.metrics.k8s.io/v1beta1",
  "metadata": {
    "selfLink": "/apis/external.metrics.k8s.io/v1beta1/namespaces/default/rabbitmq_queue_messages_ready"
  },
  "items": []
}

Even APIResourceList is also empty:
kubectl get --raw /apis/external.metrics.k8s.io/v1beta1 | jq .

{
  "kind": "APIResourceList",
  "apiVersion": "v1",
  "groupVersion": "external.metrics.k8s.io/v1beta1",
  "resources": []
}

However, I am getting proper data in prometheus endpoint:
Prometheus URL: http://<prometheus_url>:9090/api/v1/series?match%5B%5D=%7B__name__%3D~%22%5Erabbitmq_queue_.%2A%22%7D&start=1597255421.51
Response:

{
"status":"success",
"data":[
    {
        "__name__":"rabbitmq_queue_messages_ready",
        "app":"prometheus-rabbitmq-exporter",
        "durable":"true",
        "instance":"10.2.0.73:9419",
        "job":"kubernetes-pods",
        "namespace":"default",
        "pod_name":"rabbitmq-exporter-prometheus-rabbitmq-exporter-754c845847-gzlrq",
        "pod_template_hash":"754c845847",
        "queue":"test",
        "release":"rabbitmq-exporter",
        "vhost":"/"
    },
    {
        "__name__":"rabbitmq_queue_messages_ready",
        "app":"prometheus-rabbitmq-exporter",
        "durable":"true",
        "instance":"10.2.0.73:9419",
        "job":"kubernetes-pods",
        "namespace":"default",
        "pod_name":"rabbitmq-exporter-prometheus-rabbitmq-exporter-754c845847-gzlrq",
        "pod_template_hash":"754c845847",
        "queue":"test1",
        "release":"rabbitmq-exporter",
        "vhost":"/"
    }
]
}

I installed stable/prometheus-adapter using below helm values:

rules:
  default: false
  external:
    - seriesQuery: '{__name__=~"^rabbitmq_queue_.*"}'
      resources:
        #template: <<.Resource>>
        overrides:
          namespace:
            resource: namespace
          service:
            resource: service
          pod:
            resource: pod
      name:
        matches: ""
        as: "rabbitmq_queue_messages_ready"
      metricsQuery: 'rate(<<.Series>>{<<.LabelMatchers>>}[1m])'

Version of Helm and Kubernetes:
Client: &version.Version{SemVer:"v2.16.9", GitCommit:"8ad7037828e5a0fca1009dabe290130da6368e39", GitTreeState:"clean"}
Server: &version.Version{SemVer:"v2.16.7", GitCommit:"5f2584fd3d35552c4af26036f0c464191287986b", GitTreeState:"clean"}

Client Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.1", GitCommit:"d647ddbd755faf07169599a625faf302ffc34458", GitTreeState:"clean", BuildDate:"2019-10-02T17:01:15Z", GoVersion:"go1.12.10", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"15", GitVersion:"v1.15.11", GitCommit:"ec831747a3a5896dbdf53f259eafea2a2595217c", GitTreeState:"clean", BuildDate:"2020-05-29T19:56:10Z", GoVersion:"go1.12.17", Compiler:"gc", Platform:"linux/amd64"}

Which chart:
stable/prometheus-adapter

What you expected to happen:
It should fetch metrics from Prometheus

How to reproduce it (as minimally and precisely as possible):
Install stable/prometheus-rabbitmq-exporter and stable/prometheus-adapter charts using above configs.

Anything else we need to know:
I am following this guide: https://nuvalence.io/building-a-k8s-autoscaler-with-custom-metrics/

[gkarthiks]

Hi @rnkhouse the stable/prometheus-adapter chart has been deprecated effectively as per this PR #23694 on Sep 5, 2020 and moved to https://github.com/prometheus-community/helm-charts.

Please close this Issue and re-open against the prometheus-community/helm-charts repo. Here's a friendly link for new issue

We hope to see you there. 👋