[Tracking Issue] Enrich the Descheduler Metrics

[Dentrax]

As a contributor and end-user of Descheduler, we rollout it over 300+ Kubernetes clusters. I can clearly see that one of the improvement point of the Descheduler is metrics. Since Descheduler provides limited number of metrics, sometimes it can also be challenging to observe and monitor internal metrics in production. (Especially during HPA, a bunch of node(s) add/remove, etc.) I'm proposing we should prioritize the observability topics.

There is already going discussions on some issues and PRs spread around, so that I just wanted to gather all of them in one umbrella to boost awareness and make easy to track:

• - Improve podEvictor statistics #503
• - Add to metrics the pod name which was evicted #919
• - pods_evicted custom label #905
• - Proposal: OpenTelemetry Tracing Per-Plugin  #951 (PR: added otel capabilities for descheduler plugin #958)
• - Run duration metric #1037 (PR: metrics: enable loop duration and strategy duration metrics #1041)
• - Create and publish official Grafana Dashboard #1046

Dropping some closed PRs for reference:

• Add new podEvictor statistics #648
• provide configuration to include custom node and pod labels on metrics #859

[harshanarayana]

I can take a stab at #1046 once we have some more metrics generated for the strategies that are required.

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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

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[a7i]

/remove-lifecycle rotten
/reopen

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/lifecycle stale

[k8s-triage-robot]

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/lifecycle rotten

[k8s-triage-robot]

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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
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You can:

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Please send feedback to sig-contributor-experience at kubernetes/community.

/close not-planned

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