poc: statistics

[qinqon]

TODO:

• Just count once per nncp apply (don't know at each node in a cluster)
• Use NNCP status to state if it has already being counted or not, if the NNCP get updated the condition is removed.
• Modify ServiceMonitor to remove pod name and the like

  apiVersion: monitoring.coreos.com/v1
  kind: ServiceMonitor
  metadata:
  name: my-service-monitor
  namespace: my-namespace
  spec:
  selector:
  matchLabels:
    app: my-service
  endpoints:
  - port: metrics
  interval: 30s
  relabelings:
  - sourceLabels: [job]
    action: labeldrop

Current counter output example

nmstate_apply_topology_total{container="kube-rbac-proxy", instance="192.168.66.102:8443", job="nmstate-monitor", name="auto_ip4 -> linux-bridge -> ethernet", namespace="nmstate", pod="nmstate-handler-cgnhw", service="nmstate-monitor"}
1
nmstate_apply_topology_total{container="kube-rbac-proxy", instance="192.168.66.102:8443", job="nmstate-monitor", name="ethernet", namespace="nmstate", pod="nmstate-handler-cgnhw", service="nmstate-monitor"}
1

Possible query to get top 10

topk(10, sum(nmstate_apply_topology_total) by (name))

Looks like we cannot drop "instance"

[kubevirt-bot]

Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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[kubevirt-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[kubevirt-bot]

@qinqon: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-kubernetes-nmstate-e2e-handler-k8s-future	2d5dc23b003d492dbc4972abe50294e30dd772ab	link	false	/test pull-kubernetes-nmstate-e2e-handler-k8s-future
pull-kubernetes-nmstate-e2e-handler-k8s	2d5dc23b003d492dbc4972abe50294e30dd772ab	link	true	/test pull-kubernetes-nmstate-e2e-handler-k8s
pull-kubernetes-nmstate-unit-test	1f0483f60a11923c718e2033b3401fe336d1b6f0	link	true	/test pull-kubernetes-nmstate-unit-test

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