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[TEP-0135] coschedule isolate pipelinerun #6929

Merged
merged 1 commit into from
Jul 19, 2023
Merged

[TEP-0135] coschedule isolate pipelinerun #6929

merged 1 commit into from
Jul 19, 2023

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QuanZhang-William
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Part of #6740. TEP-0135 introduces a feature that allows a cluster operator to ensure that all of a PipelineRun's pods are scheduled to the same node.

This commit implements coschedule: isolate-pipelinerun coschedule mode by modifying PodAntiAffinity terms in the Affinity Assistant StatefulSets, which enforces only 1 pipelinerun is running in a node at the same time.

/kind feature

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As the author of this PR, please check off the items in this checklist:

  • Has Docs if any changes are user facing, including updates to minimum requirements e.g. Kubernetes version bumps
  • Has Tests included if any functionality added or changed
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  • Has a kind label. You can add one by adding a comment on this PR that contains /kind <type>. Valid types are bug, cleanup, design, documentation, feature, flake, misc, question, tep
  • Release notes block below has been updated with any user facing changes (API changes, bug fixes, changes requiring upgrade notices or deprecation warnings). See some examples of good release notes.
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@tekton-robot tekton-robot added release-note-none Denotes a PR that doesnt merit a release note. kind/feature Categorizes issue or PR as related to a new feature. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Jul 14, 2023
@QuanZhang-William QuanZhang-William mentioned this pull request Jul 14, 2023
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The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage to re-run this coverage report

File Old Coverage New Coverage Delta
pkg/reconciler/pipelinerun/affinity_assistant.go 97.2% 97.3% 0.1

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

File Old Coverage New Coverage Delta
pkg/reconciler/pipelinerun/affinity_assistant.go 97.2% 97.3% 0.1

@lbernick lbernick self-assigned this Jul 17, 2023
lbernick
lbernick reviewed Jul 17, 2023
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Thanks Quan! Can you include a release note for this feature and update the documentation to explain that it is implemented?

pkg/reconciler/pipelinerun/affinity_assistant.go Show resolved Hide resolved
pkg/reconciler/pipelinerun/affinity_assistant.go Show resolved Hide resolved
@QuanZhang-William
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Thanks Quan! Can you include a release note for this feature and update the documentation to explain that it is implemented?

Hi Lee! This is actually not the end to end support for coschedule-isolate-pipelinerun mode, so I don't this is the right time to update docs and release note.

Once we merged this PR, #6927 will have e2e support for all 3 modes, and we can update doc and release note in that one instead.

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Thanks Quan! Can you include a release note for this feature and update the documentation to explain that it is implemented?

Hi Lee! This is actually not the end to end support for coschedule-isolate-pipelinerun mode, so I don't this is the right time to update docs and release note.

Once we merged this PR, #6927 will have e2e support for all 3 modes, and we can update doc and release note in that one instead.

Oh I see, thanks. Can you update the description of #6927 (or add a comment) to explain that it depends on this PR? It's probably worth putting a hold as well.

@QuanZhang-William
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Thanks Quan! Can you include a release note for this feature and update the documentation to explain that it is implemented?

Hi Lee! This is actually not the end to end support for coschedule-isolate-pipelinerun mode, so I don't this is the right time to update docs and release note.
Once we merged this PR, #6927 will have e2e support for all 3 modes, and we can update doc and release note in that one instead.

Oh I see, thanks. Can you update the description of #6927 (or add a comment) to explain that it depends on this PR? It's probably worth putting a hold as well.

Comments added in #6927 (and put it on hold)

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

File Old Coverage New Coverage Delta
pkg/reconciler/pipelinerun/affinity_assistant.go 97.2% 97.3% 0.1

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

File Old Coverage New Coverage Delta
pkg/reconciler/pipelinerun/affinity_assistant.go 97.2% 97.3% 0.1

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/assign

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

File Old Coverage New Coverage Delta
pkg/reconciler/pipelinerun/affinity_assistant.go 97.2% 96.5% -0.7

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

File Old Coverage New Coverage Delta
pkg/reconciler/pipelinerun/affinity_assistant.go 97.2% 96.5% -0.7

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

File Old Coverage New Coverage Delta
pkg/reconciler/pipelinerun/affinity_assistant.go 97.2% 96.5% -0.7

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

File Old Coverage New Coverage Delta
pkg/reconciler/pipelinerun/affinity_assistant.go 97.2% 96.5% -0.7

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lbernick

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@tekton-robot tekton-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Jul 17, 2023
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/test check-pr-has-kind-label

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@QuanZhang-William: The specified target(s) for /test were not found.
The following commands are available to trigger required jobs:

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@QuanZhang-William: The specified target(s) for /test were not found.
The following commands are available to trigger required jobs:

  • /test pull-tekton-pipeline-alpha-integration-tests
  • /test pull-tekton-pipeline-beta-integration-tests
  • /test pull-tekton-pipeline-build-tests
  • /test pull-tekton-pipeline-integration-tests
  • /test tekton-pipeline-unit-tests

The following commands are available to trigger optional jobs:

  • /test pull-tekton-pipeline-go-coverage

Use /test all to run all jobs.

In response to this:

/test check-pr-has-kind-label

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.

Yongxuanzhang
Yongxuanzhang reviewed Jul 18, 2023
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/lgtm

@tekton-robot tekton-robot added the lgtm Indicates that a PR is ready to be merged. label Jul 18, 2023
@QuanZhang-William
[TEP-0135] coschedule isolate pipelinerun
c979df7 
Part of [tektoncd#6740]. [TEP-0135][tep-0135] introduces a feature that allows a cluster operator to ensure
that all of a PipelineRun's pods are scheduled to the same node.

This commit implements `coschedule: isolate-pipelinerun` coschedule mode by modifying [PodAntiAffinity](https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#inter-pod-affinity-and-anti-affinity)
terms in the `Affinity Assistant StatefulSets`, which enforces only 1 pipelinerun is running in a node at the same time.

/kind feature

[tektoncd#6740]: tektoncd#6740
[tep-0135]: https://github.com/tektoncd/community/blob/main/teps/0135-coscheduling-pipelinerun-pods.md
@tekton-robot tekton-robot removed the lgtm Indicates that a PR is ready to be merged. label Jul 19, 2023
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The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage to re-run this coverage report

File Old Coverage New Coverage Delta
pkg/reconciler/pipelinerun/affinity_assistant.go 97.2% 96.5% -0.7

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

File Old Coverage New Coverage Delta
pkg/reconciler/pipelinerun/affinity_assistant.go 97.2% 96.5% -0.7

@Yongxuanzhang
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/lgtm

@tekton-robot tekton-robot added the lgtm Indicates that a PR is ready to be merged. label Jul 19, 2023
@tekton-robot tekton-robot merged commit 0b95e49 into tektoncd:main Jul 19, 2023
@QuanZhang-William QuanZhang-William mentioned this pull request Jul 25, 2023
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@Yongxuanzhang Yongxuanzhang Yongxuanzhang left review comments

@lbernick lbernick lbernick approved these changes

@bobcatfish bobcatfish Awaiting requested review from bobcatfish

@dibyom dibyom Awaiting requested review from dibyom

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