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🐛 CAPD: delete container after failed start to work around port allocation issues #9125

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chrischdi
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What this PR does / why we need it:

Deletes the container after a failed ContainerStart to improve the retry later on by going again by creating a new container.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #8824

@k8s-ci-robot k8s-ci-robot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Aug 4, 2023
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@killianmuldoon killianmuldoon left a comment

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Thanks!

/lgtm

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Aug 4, 2023
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LGTM label has been added.

Git tree hash: 4fb62dc082a474992ef947e94cf76d4349ebf765

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/area provider/infrastructure-docker

@k8s-ci-robot k8s-ci-robot added the area/provider/infrastructure-docker Issues or PRs related to the docker infrastructure provider label Aug 4, 2023
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/lgtm

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/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: killianmuldoon

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@k8s-ci-robot k8s-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Aug 7, 2023
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/cherry-pick release-1.5

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@killianmuldoon: once the present PR merges, I will cherry-pick it on top of release-1.5 in a new PR and assign it to you.

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/cherry-pick release-1.5

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/cherry-pick release-1.4

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@killianmuldoon: once the present PR merges, I will cherry-pick it on top of release-1.4 in a new PR and assign it to you.

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/cherry-pick release-1.4

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I'll put a hold on the cherry-picks until we get some sort of signal that this is helping the flake.

@k8s-ci-robot k8s-ci-robot merged commit bda002f into kubernetes-sigs:main Aug 7, 2023
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@k8s-ci-robot k8s-ci-robot added this to the v1.6 milestone Aug 7, 2023
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@killianmuldoon: new pull request created: #9130

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/cherry-pick release-1.5

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@killianmuldoon: new pull request created: #9131

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/cherry-pick release-1.4

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// Delete the container and retry later on. This helps getting around the race
// condition where of hitting "port is already allocated" issues.
if innerErr := d.dockerClient.ContainerRemove(ctx, resp.ID, types.ContainerRemoveOptions{Force: true, RemoveVolumes: true}); innerErr != nil {
return errors.Wrapf(innerErr, "error removing container after failed start: %s", err)
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Not sure if that mixes the errors in a way that is not easily readable. I think ideally we would use kerrors aggregate (and usually do)

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In this case it should result in:

{InnerErr}: error removing container after failed start: {err}

Ack, kerrors aggregate would have been an option I didn't think of.

Was also thinking about using go's errors.Join.

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I think this is not how error wrapping works. As far as I know it appends the innerErr at the end

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(just like the normal fmt.Errorf("adfasfd test: %v", err) would)

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Usually we use something like this in CAPI:

reterr = kerrors.NewAggregate([]error{reterr, errors.New("failed to unlock the kubeadm init lock")})

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Ah yeah so currently it is:

error removing container after failed start: {err}: {innerErr}

I will follow up and use kerrors instead 👍

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Thx! I know it's a nit in a test provider, just noticed and was thinking about future me trying to parse the error :)

@chrischdi chrischdi deleted the pr-docker-fix-flaky-containercreate branch August 18, 2023 10:23
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Timed out waiting for all machines to be exist
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