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Fix upgrade deadlock in Pipeline and Triggers #592

Merged
merged 1 commit into from
Jan 28, 2022
Merged

Fix upgrade deadlock in Pipeline and Triggers #592

merged 1 commit into from
Jan 28, 2022

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nikhil-thomas
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@nikhil-thomas nikhil-thomas commented Jan 27, 2022 •
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Add a mechanism to disable webhook validation if the configMaps
are not already there in the cluster.

What this patch does: when webhook endpoint slice is [], the "rules" section of config.webhook.** validatingwebhookconfiguration is remove. So that the updates on configMaps eg: config-defaults are not deadlocked.

The dead lock is caused due to a cluster level cyclic dependency in
tektoncd/pipelines and in tektoncd/triggers. More details will be captured in
issues in the both repository.

Note: infact this deadlock can occur in any tektoncd project which follows tektoncd/pipeline
file list structure in config/.

Signed-off-by: Nikhil Thomas [email protected]

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@tekton-robot tekton-robot added release-note Denotes a PR that will be considered when it comes time to generate release notes. size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Jan 27, 2022
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The following is the coverage report on the affected files.
Say /test pull-tekton-operator-go-coverage to re-run this coverage report

File Old Coverage New Coverage Delta
pkg/reconciler/common/deadlockbreaker.go Do not exist 0.0%

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/hold

@tekton-robot tekton-robot added the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Jan 27, 2022
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The following is the coverage report on the affected files.
Say /test pull-tekton-operator-go-coverage to re-run this coverage report

File Old Coverage New Coverage Delta
pkg/reconciler/common/deadlockbreaker.go Do not exist 0.0%

@nikhil-thomas
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/unhold

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The following is the coverage report on the affected files.
Say /test pull-tekton-operator-go-coverage to re-run this coverage report

File Old Coverage New Coverage Delta
pkg/reconciler/common/deadlockbreaker.go Do not exist 0.0%

@nikhil-thomas
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/hold cancel

@tekton-robot tekton-robot removed the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Jan 27, 2022
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The following is the coverage report on the affected files.
Say /test pull-tekton-operator-go-coverage to re-run this coverage report

File Old Coverage New Coverage Delta
pkg/reconciler/common/deadlockbreaker.go Do not exist 0.0%

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sm43 commented Jan 27, 2022

/approve
/meow

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@sm43: cat image

In response to this:

/approve
/meow

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

@tekton-robot tekton-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Jan 27, 2022
@tekton-robot tekton-robot added size/L Denotes a PR that changes 100-499 lines, ignoring generated files. and removed size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Jan 27, 2022
@nikhil-thomas
Fix upgrade deadlock in Pipeline and Triggers
234fb43 
Add a mechanism to disable webhook validation if the configMaps
are not already there in the cluster.

What this patch does: when webhook endpoint slice is [], the "rules"
section of config.webhook.** validatingwebhookconfiguration is remove.
So that the updates on configMaps eg: config-defaults are not
deadlocked.

The dead lock is caused due to a cluster level cyclic dependency in
tektoncd/pipelines and in tektoncd/triggers. More details will be captured in
issues in the both repository.

Note: infact this deadlock can occur in any tektoncd project which follows tektoncd/pipeline
file list structure in `config/`.

Signed-off-by: Nikhil Thomas <[email protected]>
@tekton-robot
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The following is the coverage report on the affected files.
Say /test pull-tekton-operator-go-coverage to re-run this coverage report

File Old Coverage New Coverage Delta
pkg/reconciler/common/deadlockbreaker.go Do not exist 0.0%

@tekton-robot
Copy link
Contributor

The following is the coverage report on the affected files.
Say /test pull-tekton-operator-go-coverage to re-run this coverage report

File Old Coverage New Coverage Delta
pkg/reconciler/common/deadlockbreaker.go Do not exist 0.0%

vdemeester
vdemeester approved these changes Jan 27, 2022
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SGTM 👍🏼

pradeepitm12
pradeepitm12 approved these changes Jan 28, 2022
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/lgtm

@tekton-robot tekton-robot added the lgtm Indicates that a PR is ready to be merged. label Jan 28, 2022
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pradeepitm12, sm43, vdemeester

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@tekton-robot tekton-robot merged commit b0c6763 into tektoncd:main Jan 28, 2022
@nikhil-thomas nikhil-thomas mentioned this pull request Feb 2, 2022
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@sm43 sm43 sm43 left review comments

@pradeepitm12 pradeepitm12 pradeepitm12 approved these changes

@vdemeester vdemeester vdemeester approved these changes

@concaf concaf Awaiting requested review from concaf

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