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Add Lease implementation to leaderelection package#70778

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k8s-ci-robot merged 1 commit into
kubernetes:masterfrom
wongma7:lease
Jan 24, 2019
Merged

Add Lease implementation to leaderelection package#70778
k8s-ci-robot merged 1 commit into
kubernetes:masterfrom
wongma7:lease

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@wongma7

@wongma7 wongma7 commented Nov 8, 2018

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What type of PR is this?
/kind feature

What this PR does / why we need it: enables components to use coordination/Lease objects for leaderelection as opposed to endpoints/configmaps. e.g. https://github.com/kubernetes-csi/external-attacher (which doesn't need the configmap) and https://github.com/kubernetes-csi/external-provisioner/ (which is currently using endpoints (oops) and would like to move away)

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 #https://github.com/kubernetes/client-go/issues/499

Special notes for your reviewer: Don't know if this is wanted, I see the Lease object is used by kubelet but don't see it anywhere else. Created https://github.com/kubernetes/client-go/issues/499 & didn't get a response.

Does this PR introduce a user-facing change?:

NONE

@k8s-ci-robot k8s-ci-robot added release-note-none Denotes a PR that doesn't 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. needs-sig Indicates an issue or PR lacks a `sig/foo` label and requires one. needs-priority Indicates a PR lacks a `priority/foo` label and requires one. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. labels Nov 8, 2018
@k8s-ci-robot k8s-ci-robot added sig/api-machinery Categorizes an issue or PR as relevant to SIG API Machinery. and removed needs-sig Indicates an issue or PR lacks a `sig/foo` label and requires one. labels Nov 8, 2018
wgliang
wgliang reviewed Nov 8, 2018
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Comment thread staging/src/k8s.io/client-go/tools/leaderelection/resourcelock/leaselock.go Outdated
Comment thread staging/src/k8s.io/client-go/tools/leaderelection/resourcelock/leaselock.go Outdated
yue9944882
yue9944882 reviewed Nov 8, 2018
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Comment thread staging/src/k8s.io/client-go/tools/leaderelection/resourcelock/leaselock.go Outdated

@yue9944882 yue9944882 Nov 8, 2018

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this allows empty holder identity and zero lease duration in the record, which looks slightly odd. but stepping thru the elector, it will work fine i suppose.

Comment thread staging/src/k8s.io/client-go/tools/leaderelection/resourcelock/leaselock.go Outdated

@yue9944882 yue9944882 Nov 8, 2018

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kubernetes/staging/src/k8s.io/client-go/tools/leaderelection/resourcelock/interface.go

Lines 40 to 41 in 16d0992

AcquireTime metav1.Time `json:"acquireTime"`
RenewTime metav1.Time `json:"renewTime"`

can we switch them to micro time? @mikedanese

@mikedanese mikedanese Nov 17, 2018 •
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@wongma7 why is this helpful?

@mikedanese mikedanese Nov 17, 2018

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Hmm, I see that LeaseSpec went with microtime. It should be fine. We don't actually use it to implement correctness. Also metav1.MicroTime to metav1.Time is just:

time := metav1.Time{microTime.Time}

No need for this function.

@wongma7 wongma7 Nov 20, 2018

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wow 👍 fixed in new patch

@roycaihw

roycaihw commented Nov 8, 2018

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/cc @cheftako

@k8s-ci-robot k8s-ci-robot requested a review from cheftako November 8, 2018 21:27
@k8s-ci-robot k8s-ci-robot added the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Nov 16, 2018
@wongma7 wongma7 force-pushed the lease branch 2 times, most recently from 91f527d to 5da7a58 Compare November 20, 2018 15:32
@k8s-ci-robot k8s-ci-robot removed the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Nov 20, 2018
@wongma7

wongma7 commented Nov 20, 2018

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/test pull-kubernetes-e2e-kops-aws

@wongma7 wongma7 force-pushed the lease branch 2 times, most recently from 58a2b76 to a041e47 Compare November 20, 2018 18:54
@yue9944882 yue9944882 mentioned this pull request Dec 5, 2018
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@liggitt

liggitt commented Dec 21, 2018

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cc @wojtek-t

@wojtek-t

wojtek-t commented Dec 21, 2018

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Thanks for linking @liggitt !
I will take a look right after Christmas.

/assign @wojtek-t

@cheftako

cheftako commented Dec 21, 2018

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/assign

@k8s-ci-robot k8s-ci-robot added the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Jan 13, 2019
@k8s-ci-robot k8s-ci-robot removed the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Jan 14, 2019
mikedanese
mikedanese reviewed Jan 22, 2019
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Comment thread staging/src/k8s.io/client-go/tools/leaderelection/leaderelection_test.go Outdated
mikedanese
mikedanese reviewed Jan 22, 2019
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Comment thread staging/src/k8s.io/client-go/tools/leaderelection/leaderelection_test.go Outdated
mikedanese
mikedanese reviewed Jan 22, 2019
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Comment thread staging/src/k8s.io/client-go/tools/leaderelection/leaderelection_test.go Outdated
mikedanese
mikedanese reviewed Jan 22, 2019
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Comment thread staging/src/k8s.io/client-go/tools/leaderelection/resourcelock/interface.go Outdated
mikedanese
mikedanese reviewed Jan 22, 2019
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Comment thread staging/src/k8s.io/client-go/tools/leaderelection/resourcelock/leaselock.go
return ll.LockConfig.Identity
}

func LeaderElectionRecordToLeaseSpec(ler *LeaderElectionRecord) coordinationv1.LeaseSpec {

@mikedanese mikedanese Jan 22, 2019

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make this private

@wongma7 wongma7 Jan 23, 2019

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can't access from leaderelection/leaderelection_test.go otherwise, same as the new leaseSpecToLeaderElectionRecord

mikedanese
mikedanese reviewed Jan 22, 2019
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Comment thread staging/src/k8s.io/client-go/tools/leaderelection/resourcelock/leaselock.go Outdated
@mikedanese

mikedanese commented Jan 22, 2019

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I'm generally happy with this. Had a couple suggestions.

/approve

@k8s-ci-robot

k8s-ci-robot commented Jan 22, 2019

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mikedanese, wongma7

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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 Jan 22, 2019
@mikedanese

mikedanese commented Jan 23, 2019

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LGTM

@wongma7

wongma7 commented Jan 23, 2019

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squashed, thank you

@mikedanese

mikedanese commented Jan 23, 2019

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/lgtm

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Jan 23, 2019
@wongma7

wongma7 commented Jan 24, 2019

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/retest

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@wongma7

wongma7 commented Jan 24, 2019

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/retest

@k8s-ci-robot k8s-ci-robot merged commit d027ecf into kubernetes:master Jan 24, 2019
@k8s-ci-robot

k8s-ci-robot commented Jan 26, 2019

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@wongma7: The following test failed, say /retest to rerun them all:

Test name Commit Details Rerun command
pull-kubernetes-e2e-kops-aws 4101758 link /test pull-kubernetes-e2e-kops-aws

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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@msau42 msau42 mentioned this pull request Feb 8, 2019
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@bgrant0607 bgrant0607 mentioned this pull request Feb 21, 2019
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@Jeffwan Jeffwan mentioned this pull request Nov 18, 2019
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@gmarek gmarek Awaiting requested review from gmarek

@cheftako cheftako Awaiting requested review from cheftako

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@mikedanese mikedanese mikedanese left review comments

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approved Indicates a PR has been approved by an approver from all required OWNERS files. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. kind/feature Categorizes issue or PR as related to a new feature. lgtm "Looks good to me", indicates that a PR is ready to be merged. needs-priority Indicates a PR lacks a `priority/foo` label and requires one. release-note-none Denotes a PR that doesn't merit a release note. sig/api-machinery Categorizes an issue or PR as relevant to SIG API Machinery. size/L Denotes a PR that changes 100-499 lines, ignoring generated files.

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9 participants

@wongma7 @roycaihw @liggitt @wojtek-t @cheftako @mikedanese @k8s-ci-robot @wgliang @yue9944882