Kubernetes scaling up not fast enough (for K8 1.17 or below)

Question

Kubernetes 1.18 has a very nice ability to change auto-scaling going up through the behavior and scaleUp set. For 1.17, there's a way to control downscaling. Is there a parallel way to scale up faster? We are expecting very variable loads and our cluster isn't scaling up fast enough.

I am not sure what other info to include. I've been searching through the docs, but I cannot find anything that points me in the right direction.

Which type of scaling are you working with? HPA, VPA, Cluster Autoscaler? — OregonTrail, Aug 23 '20 at 23:18

Rico · Answer 1 · 2020-08-24T04:28:23.230

2

Not really.

Assuming you are referring to HPAs, you can define a behavior scaleUp Policy only if you are using K8s 1.18 or later (v2beta2 HPA API). For example:

behavior:
  scaleDown:
    stabilizationWindowSeconds: 300
    policies:
    - type: Percent
      value: 100
      periodSeconds: 15
  scaleUp: 
    stabilizationWindowSeconds: 0
    policies:
    - type: Percent
      value: 100
      periodSeconds: 15
    - type: Pods
      value: 4
      periodSeconds: 15
    selectPolicy: Max

✌️

edited Aug 24 '20 at 04:28

answered Aug 24 '20 at 01:13

Rico

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Yes, thank you. I was hoping to find a way to do it in 1.17. – Basalat Raja Aug 24 '20 at 03:31
I read your question too fast. So this is not even available on 1.17 with a feature gate. – Rico Aug 24 '20 at 04:29
That's what I was afraid of. I think we'll just have to move to 1.18. Thanks for looking! – Basalat Raja Aug 24 '20 at 17:59

Kubernetes scaling up not fast enough (for K8 1.17 or below)

1 Answers1