feat: unify grafana dashboard datasource by use of a variable and add new karpenter 0.15.0 consolidation graphs

[pyromaniac3010]

Get rid of statically assigned datasource uid. This enables users to import the dashboard to kube-prometheus-stack without altering it afterwards to search and replace the datasource uid.

How was this change tested?
using grafana config in kube-prometheus stack with my version results in directly showing graphs. With the old version it shows errors about not found datasource.

    dashboards:
      karpenter:
        capacity-dashboard:
          url: https://raw.githubusercontent.com/pyromaniac3010/karpenter/a811cda492d0a365ae922b666bbbe62439102883/website/content/en/preview/getting-started/getting-started-with-eksctl/karpenter-capacity-dashboard.json
          datasource: Prometheus
        performance-dashboard:
          url: https://raw.githubusercontent.com/pyromaniac3010/karpenter/a811cda492d0a365ae922b666bbbe62439102883/website/content/en/preview/getting-started/getting-started-with-eksctl/karpenter-performance-dashboard.json
          datasource: Prometheus

Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: #
• No

Release Note

NONE

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

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[pyromaniac3010]

I also added the new karpenter 0.15.0 consolidation metrics to the capacity dashboard

[njtran]

Hi @pyromaniac3010, thanks for the contribution!

Since I'm not an expert here, can you explain a little more about what a non-statically defined datasource UID does, or how this helped you for development? When you say With the old version it shows errors about not found datasource., were you using custom datasources with the dashboards and interchanging between that and the default Prometheus data source?

Additionally, for the dashboard, do you mind posting some screenshots of how these look?

[pyromaniac3010]

Hi @njtran,

in the "old" version there is a "uid": "PBFA97CFB590B2093" defined for every widget. This only works for installations which actually have a prometheus datasource with this exact UID defined. This leads to problems, if you try to use this dashboard as a pre-provisioned dashboard with kube-prometheus-stack.
I changed that to use a variable, which fixed the behavior for the pre-provisioned dashboards in kube-prometheus-stack.

This is a screenshot of the changes made to include the new "Consolidation" metrics (including "cluster"-label):

[njtran]

Hey, sorry for the delay. This looks good. I'll try it out on my cluster. Can you add a little more information on how you tested this? For instance, how did you install the helm charts? Did you import the JSON manually?

[njtran]

Hey @pyromaniac3010, the dashboard looks good to me. Tested it with the following grafana-values.yaml to reflect your newer commit. Looks like it works with or without the datasource: Prometheus part, so going to approve as it looks good as is.

dashboards:
  default:
    capacity-dashboard:
      url: https://raw.githubusercontent.com/pyromaniac3010/karpenter/04c1fcb6c54a1b320ebbbb90ea388563493a67b7/website/content/en/preview/getting-started/getting-started-with-eksctl/karpenter-capacity-dashboard.json
      datasource: Prometheus
    performance-dashboard:
      url: https://raw.githubusercontent.com/pyromaniac3010/karpenter/04c1fcb6c54a1b320ebbbb90ea388563493a67b7/website/content/en/preview/getting-started/getting-started-with-eksctl/karpenter-performance-dashboard.json
      datasource: Prometheus

Thanks for the contribution!