kubernetes-sigs/cluster-api

Support all knobs used for k8s scalability tests to run CAPI on scale

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#9,567 opened on Oct 18, 2023

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Description

What would you like to be added (User Story)?

As an operator I would like to use the same knobs as used by sig-scalability to run kubernetes on scale on top of CAPI.

Detailed Description

In the mailing list thread about kube-up/kops there was a message:

Did you maybe try also with the informing SIG-scalaibility tests? These might require extensions to kops as we require tuning a bunch of non-obvious flags of different components.

Any kind of tuning used in SIG-scalability tests may be helpful for users of CAPI to run clusters at scale as done in the SIG-scalability tests.

This issue is to check what additional tuning is used and to check if these are supported to get set via CAPI and/or make them available.

Anything else you would like to add?

One source could be the sig-scalability test-infra:

Or asking in slack.

Label(s) to be applied

/kind feature One or more /area label. See https://github.com/kubernetes-sigs/cluster-api/labels?q=area for the list of labels.

Contributor guide

Research direction
Investigate the sig scalability test infra repository (https://github.com/kubernetes/test infra/tree/master/config/jobs/kubernetes/sig scalability) to identify tuning flags and knobs used for scalability tests, then determine which are not currently exposed via Cluster API and propose adding support for them.
Tech stack
gokubernetes
Domain
backendinfrastructuredevops
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Needs investigation
Prerequisites
GoKubernetesCluster API
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30