A Scaler for Selenium Grid

[NasAmin]

Use a KEDA scalar to scale selenium grid automatically based on the number of requests on the Selenium hub pod.

Use-Case

There is currently no easy way to reliablity scale Selenium Grid chrome-node pods. We have tried HPA but they make our tests more unreliable and the hub gets exhausted eventually.
We know that the Hub is a single point of failure and maybe SeleniumGrid is not an appropriate tool.

Specification

• Scale Selenium browser nodes based on the instance requests on the hub
• Auto scale up/down based on demand.
• Can the hub be scaled up?

Regards,

Nas

[tomkerkhove]

Thanks for the suggestion, is this something you are willing to contribute?

[NasAmin]

@tomkerkhove Apologies, it seems like it requires GO and I have no experience with GO.
I'll try when I can find time.

[tomkerkhove]

No worries then! We'll get there at some point.

[prashanth-volvocars]

I would like to contribute for this. I already have a poc to make this work using metrics api scaler but since i know Golang i thought i can implement a new scaler for selenium. Let me how to proceed

[tomkerkhove]

That would be great, thank you!

[tomkerkhove]

Also, if you are already a KEDA user and want to be listed - Please let me know!

[prashanth-volvocars]

We are experimenting with KEDA in our local setup to see how it suits our needs. Once we push it to production, we would be happy to be listed as an user. I will keep you posted on that.

[prashanth-volvocars]

Regarding the Scaler for selenium grid. I just have quick question. How is it going to be. Is it going to be a external scaler or is it going to be a inbuilt scaler