Is there a way to configure flags on kube-controller-manager for HPA

[DmitrySemchenok]

Hello. The question is following:
We currently need to set custom values to following flags on kube-controller-manager
--horizontal-pod-autoscaler-initial-readiness-delay
--horizontal-pod-autoscaler-cpu-initialization-period
Is there a way to configure those values on aks cluster?
If not then is there any other way to prevent HPA from collecting metrics of not ready deployments in cas of long pods initialization time?

[4c74356b41]

I'd like to add a more general question. is it possible to add\alter any flags at all? like enable alpha features?

[ghost]

@Azure/aks-pm issue needs labels

[ghost]

@Azure/aks-pm issue needs labels

[ghost]

@Azure/aks-pm issue needs labels

[ghost]

@Azure/aks-pm issue needs labels

[TomGeske]

+@palma21

[ghost]

Action required from @Azure/aks-pm

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[caiotavares88]

Any updates on this? Have the same issue and would like to change the default values of those two flags.

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[bhavishya123]

Any updates here ? Require this for updation of default values

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[ghost]

Issue needing attention of @Azure/aks-leads

[palma21]

For alpha flags: #2058

For those 2 HPA flags + @justindavies to evaluate

[biswarup1290dass]

Just checking, is this issue being tracked for any updates related to enabling/disabling K8s feature gate for AKS?
Or is there support for enabling/disabling feature gate on AKS already?

What i am looking for: Provision an AKS cluster with k8s v1.21.x with BoundServiceAccountTokenVolume feature gate disabled (its enabled by default starting 1.21+)

[annerajb]

i would love to also individually toggle feature gates such as MixedProtocolLBSVC already requested here #2193

[dwardellitus]

Any movement going to happen on this issue? We have cases where modifications to these hpa flags could prove very useful.

[qpetraroia]

@justindavies for viz

Thanks for reaching out folks, we appreciate it. We will take a look at this ask/issue.

[olsenme]

dwardellitus

Can you provide more details here?

[dwardellitus]

Pretty much the same as the original issue. We have a couple of deployments that are rather CPU hungry during initialization, and last Fall we were occasionally observing scaling events after deploying new code but in an otherwise quiet environment (in one case horizontal then lead to vertical when additional pods could not be scheduled). We were hoping those flags would help us, and then I found this issue. The problem is less acute than I thought a few months ago, likely due to other tweaks to resourcing and load distribution. That said, I still see value in being able to adjust via the flags
--horizontal-pod-autoscaler-initial-readiness-delay
--horizontal-pod-autoscaler-cpu-initialization-period

[JCDeist]

We're experiencing a similar issue. Our Pods are able to server traffic but are still cpu intensive when starting up. This causes flapping up and down of usage when we are starting up these containers. Having the ability to adjust these flags would help us prevent this issue and result in faster helm releases to our environment.