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images for control plane are downloaded on compute nodes #9094

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rptaylor opened this issue Jul 15, 2022 · 16 comments · Fixed by #10899
Open

images for control plane are downloaded on compute nodes #9094

rptaylor opened this issue Jul 15, 2022 · 16 comments · Fixed by #10899
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kind/feature Categorizes issue or PR as related to a new feature.

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@rptaylor
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What would you like to be added:
The list of images for downloading is obtained from kubeadm config images list. The output from that command looks like e.g.

$ kubeadm config images list --config=/etc/kubernetes/kubeadm-images.yaml
k8s.gcr.io/kube-apiserver:v1.21.6
k8s.gcr.io/kube-controller-manager:v1.21.6
k8s.gcr.io/kube-scheduler:v1.21.6
k8s.gcr.io/kube-proxy:v1.21.6
k8s.gcr.io/pause:3.4.1
quay.io/coreos/etcd:v3.4.13
k8s.gcr.io/coredns/coredns:v1.8.0

So the apiserver, controller manager and scheduler images are downloaded on all compute nodes, even though they are only needed on master nodes.

Why is this needed:
For large clusters with several hundred nodes this is extremely inefficient, it can take hours just to download and copy images. This would cut the total number of downloads in about half, for clusters with number of workers >> number of masters.

@rptaylor rptaylor added the kind/feature Categorizes issue or PR as related to a new feature. label Jul 15, 2022
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/lifecycle stale

@k8s-ci-robot k8s-ci-robot added the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Oct 13, 2022
@rptaylor
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/remove-lifecycle stale

@k8s-ci-robot k8s-ci-robot removed the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Oct 17, 2022
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The Kubernetes project currently lacks enough contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

  • After 90d of inactivity, lifecycle/stale is applied
  • After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
  • After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

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/lifecycle stale

@k8s-ci-robot k8s-ci-robot added the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Jan 15, 2023
@rptaylor
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/remove-lifecycle stale

@k8s-ci-robot k8s-ci-robot removed the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Jan 16, 2023
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The Kubernetes project currently lacks enough contributors to adequately respond to all issues.

This bot triages un-triaged issues according to the following rules:

  • After 90d of inactivity, lifecycle/stale is applied
  • After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
  • After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

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Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle stale

@k8s-ci-robot k8s-ci-robot added the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Apr 16, 2023
@rptaylor
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/remove-lifecycle stale

@k8s-ci-robot k8s-ci-robot removed the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Apr 29, 2023
@NierYYDS
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NierYYDS commented Sep 9, 2023

Have you tried setting skip_kubeadm_images to true

@rptaylor
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Have you tried setting skip_kubeadm_images to true

Wouldn't that skip all images required by kubeadm on all nodes? I didn't see any logic that would limit the image download list to those which are required on specific nodes. We are using kubeadm-based etcd installation so we need those images, but only on the master nodes.

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The Kubernetes project currently lacks enough contributors to adequately respond to all issues.

This bot triages un-triaged issues according to the following rules:

  • After 90d of inactivity, lifecycle/stale is applied
  • After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
  • After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

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Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle stale

@k8s-ci-robot k8s-ci-robot added the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Jan 28, 2024
@rptaylor
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/remove-lifecycle stale

@k8s-ci-robot k8s-ci-robot removed the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Jan 29, 2024
@VannTen
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VannTen commented Apr 29, 2024

/reopen

@k8s-ci-robot k8s-ci-robot reopened this Apr 29, 2024
@k8s-ci-robot
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@VannTen: Reopened this issue.

In response to this:

/reopen

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@k8s-triage-robot
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The Kubernetes project currently lacks enough contributors to adequately respond to all issues.

This bot triages un-triaged issues according to the following rules:

  • After 90d of inactivity, lifecycle/stale is applied
  • After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
  • After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

  • Mark this issue as fresh with /remove-lifecycle stale
  • Close this issue with /close
  • Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle stale

@k8s-ci-robot k8s-ci-robot added the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Jul 28, 2024
@rptaylor
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This might be fixed by #10950 in the future.

/remove-lifecycle stale

@k8s-ci-robot k8s-ci-robot removed the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Jul 29, 2024
@k8s-triage-robot
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The Kubernetes project currently lacks enough contributors to adequately respond to all issues.

This bot triages un-triaged issues according to the following rules:

  • After 90d of inactivity, lifecycle/stale is applied
  • After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
  • After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

  • Mark this issue as fresh with /remove-lifecycle stale
  • Close this issue with /close
  • Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle stale

@k8s-ci-robot k8s-ci-robot added the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Oct 27, 2024
@rptaylor
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/remove-lifecycle stale

@k8s-ci-robot k8s-ci-robot removed the lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. label Oct 29, 2024
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