VerticalRunnerAutoscaler like Kubernetes VPA to scale-up/down Runners

[KeisukeYamashita]

Is your feature request related to a problem? Please describe.

In a CI job, there are jobs that use many resources while other doesn't.

Describe the solution you'd like

Like Kubernetes VPA, we like to have a feature that

• Scale-up/down the Runner by resource usage like VPA

Describe alternatives you've considered

Using the Kubernetes native VPA. But pods can't be the target because it's not replicaset or deployment.

Additional context
Add any other context or screenshots about the feature request here.

[mumoshu]

@KeisukeYamashita As far as I know you can point VPA to a StatefulSet. Our RunnerSet is backed by StatefulSet so I'd recommend you to try it out with that first.

If you come up with any potential and concrete feature that looks like a good-fit for actions-runner-controller, feel free to leave comments here for further discussion.

Also I'd be happy to review any PRs related to that!

[KeisukeYamashita]

Thank you for your quick reply 🙏

Our RunnerSet is backed by StatefulSet so I'd recommend you to try it out with that first.

I didn't know that, thank you, I will try it out first 🚀

[ritaCanavarro]

@KeisukeYamashita Did applying the VPA to the StatefulSet worked on your end?
We tried and ended up having no recommendations :/