Resource monitor doesn't work

[RomanNikitenko]

Describe the bug

I get Resource monitor won't be displayed. Metrics Server is not enabled on the cluster. warning on the dogfooding instance.
I'm not aware if it's something that really should be configured
or
it's a potential problem on the resource monitor extension side.

Che version

7.88@latest

Steps to reproduce

1. Create a workspace on the dogfooding instance.
2. Click Resources button on the bottom panel.
3. Check notifications

Expected behavior

Resource monitor should display info about resources.

Runtime

I reproduced it on the dogfooding instance

Screenshots

Eclipse Che Logs

I found the following in logs:

workbench.web.main.js:2031 [eclipse-che.resource-monitor]Cannot connect to Metrics Server. Status code: 404. Error: {"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"the server could not find the requested resource","reason":"NotFound","details":{},"code":404}

Additional context

No response

[ibuziuk]

Does not seem to work for me on Developer Sandbox / 3.14 but the error is different:

[paddy667]

I have the same issue, version:

[vitaliy-guliy]

I noticed that on the dogfooding instance when the url to the metrics server has trailing slash, nothing is returned

$ kubectl get --raw /apis/metrics.k8s.io/v1beta1/
Error from server (NotFound): the server could not find the requested resource

If I remove trailing slash, it works

$ kubectl get --raw /apis/metrics.k8s.io/v1beta1 | jq .
{
  "kind": "APIResourceList",
  "apiVersion": "v1",
  "groupVersion": "metrics.k8s.io/v1beta1",
  "resources": [
    {
      "name": "nodes",
      "singularName": "node",
      "namespaced": false,
      "kind": "NodeMetrics",
      "verbs": [
        "get",
        "list"
      ]
    },
    {
      "name": "pods",
      "singularName": "pod",
      "namespaced": true,
      "kind": "PodMetrics",
      "verbs": [
        "get",
        "list"
      ]
    }
  ]
}

On the developer sandbox it works with and without trailing slash.