metrics server in dev cluster

[eguzki]

What

Deploy metrics server in kind cluster (development cluster)

The metrics server enables kubectl top pod

❯ kubectl top pod -A
NAMESPACE            NAME                                                    CPU(cores)   MEMORY(bytes)   
cert-manager         cert-manager-7bd4d4cdff-6l4fl                           1m           22Mi            

The metrics server also enables k9s in pods tab to show few more columns with cpu, mem usage

[codecov]

Codecov Report

Merging #516 (5adf3fd) into main (ece13e8) will increase coverage by 0.14%.
Report is 12 commits behind head on main.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #516      +/-   ##
==========================================
+ Coverage   80.20%   80.35%   +0.14%     
==========================================
  Files          64       64              
  Lines        4492     4516      +24     
==========================================
+ Hits         3603     3629      +26     
+ Misses        600      596       -4     
- Partials      289      291       +2     

Flag	Coverage Δ
integration	71.39% <ø> (+0.10%)	⬆️
unit	29.88% <ø> (-0.15%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
api/v1beta1 (u)	71.42% <ø> (ø)
api/v1beta2 (u)	91.42% <ø> (ø)
pkg/common (u)	88.82% <ø> (ø)
pkg/istio (u)	73.91% <ø> (ø)
pkg/log (u)	94.73% <ø> (ø)
pkg/reconcilers (u)	64.04% <ø> (ø)
pkg/rlptools (u)	79.45% <ø> (ø)
controllers (i)	77.07% <75.00%> (+0.27%)	⬆️

see 10 files with indirect coverage changes

[david-martin]

$ kubectl get pods --namespace kube-system -l k8s-app=metrics-server
NAME                              READY   STATUS    RESTARTS   AGE
metrics-server-6b4d6cb49f-927nb   1/1     Running   0          3m4s

$ kubectl get --raw "/apis/metrics.k8s.io/v1beta1/nodes" | jq .
{
  "kind": "NodeMetricsList",
  "apiVersion": "metrics.k8s.io/v1beta1",
  "metadata": {},
  "items": [
    {
      "metadata": {
        "name": "kuadrant-local-control-plane",
        "creationTimestamp": "2024-04-03T11:23:45Z",
        "labels": {
          "beta.kubernetes.io/arch": "arm64",
          "beta.kubernetes.io/os": "linux",
          "kubernetes.io/arch": "arm64",
          "kubernetes.io/hostname": "kuadrant-local-control-plane",
          "kubernetes.io/os": "linux",
          "node-role.kubernetes.io/control-plane": "",
          "node.kubernetes.io/exclude-from-external-load-balancers": ""
        }
      },
      "timestamp": "2024-04-03T11:23:31Z",
      "window": "10.043s",
      "usage": {
        "cpu": "64628397n",
        "memory": "1243248Ki"
      }
    }
  ]
}

[david-martin]

/lgtm
/approve

[david-martin]

(I've switched over to podman on macos, so needed these pending changes to verify this pr #517)