Kubernetes: scaling DOWN pods horizontally bases on load.

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We have a service that has horizontal scaling for when the demand increases. We are having problems with pods being scaled down when demand lessens BEFORE the jobs in that pod are completed.

What is the best practice way to scale down pods but ONLY when all the jobs in a particular pod have completed?

The jobs are not stateless. They are a java ETL process.
We can removed the horizontal scaling if we have to, but it would be nice to have.

What I have tried:

Honestly, I was just assigned this issue and I haven't tried anything, yet. I've been reading up on things like PreStop and TerminationGracePeriodSeconds but wanted some best practice advice.

Posted 6-May-22 8:12am

MarkTJohnson

Updated 13-May-22 7:45am

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Greg Utas 6-May-22 15:02pm

Maybe the software that initiates the scaling thinks that your jobs must be stateless, which is the mindless fashion these days.

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MarkTJohnson · Answer 1 · 2022-05-13T07:45:00

Solution 1

I found something that should work for us. Here's the link I found for the benefit of others
HPA - How to gracefully scale down pods with PreStop hooks - ShyamJos.com[^]

Posted 13-May-22 7:45am

MarkTJohnson