Add simple Grafana dashboard

[darox]

This commit adds a simple Grafana dashboard for the metrics exposed by Keda metric server.

Relates to #3911
Relates to kedacore/keda-docs#985

[tomkerkhove]

I like this idea, thank you! Do you have a screenshot of what it looks like?

Also, we should document this on https://keda.sh/docs/2.8/operate/ and add a section on Grafana which mentions this template and what it includes.

[darox]

I like this idea, thank you! Do you have a screenshot of what it looks like?

Also, we should document this on https://keda.sh/docs/2.8/operate/ and add a section on Grafana which mentions this template and what it includes.

Sure

I'm open to improvements/wishes.

[darox]

This is an even better representation of the operations performed by Keda:

It will visualize the changes by using the following metric:
changes(kube_deployment_spec_replicas{deployment=~"$scaledObject"}[1m])

I have updated the PR.

[tomkerkhove]

I love it!

Also, we should document this on keda.sh/docs/2.8/operate and add a section on Grafana which mentions this template and what it includes.

Any thoughts on this?

[darox]

I love it!

Also, we should document this on keda.sh/docs/2.8/operate and add a section on Grafana which mentions this template and what it includes.

Any thoughts on this?

Sounds good. I will add docs. Give me some time.

I will put it here, ok?

[tomkerkhove]

Sounds good!

[darox]

Sounds good!

See kedacore/keda-docs#985

[darox]

Thank you for handling this PR so fast @tomkerkhove

[tomkerkhove]

My pleasure, thank YOU!ç

[yuvalweber]

what do you guys think about adding a panel that shows regarding how much replicas we have now against the max replicas. kube_horizontalpodautoscaler_status_current_replicas/ kube_horizontalpodautoscaler_spec_max_replicas ?

[tomkerkhove]

Nice idea! Are you open to send a PR?

[yuvalweber]

Added a PR please review @tomkerkhove #3934