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images for control plane are downloaded on compute nodes #9094
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Have you tried setting |
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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/reopen |
@VannTen: Reopened this issue. In response to this:
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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:
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Please send feedback to sig-contributor-experience at kubernetes/community. /lifecycle stale |
This might be fixed by #10950 in the future. /remove-lifecycle stale |
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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.
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.
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