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Add option to ignore pods with PVCs from eviction #481

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merged 1 commit into from Jan 27, 2021
Merged

Add option to ignore pods with PVCs from eviction #481

merged 1 commit into from Jan 27, 2021

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damemi
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@damemi damemi commented Jan 11, 2021

Fixes #96

@k8s-ci-robot k8s-ci-robot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Jan 11, 2021
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damemi commented Jan 11, 2021

/hold
make gen is currently broken due to the logging fields

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damemi
damemi commented Jan 11, 2021
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/hold cancel
make gen is fixed now

@k8s-ci-robot k8s-ci-robot removed the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Jan 11, 2021
@damemi damemi force-pushed the ignore-pvc-pods branch 3 times, most recently from a8cc407 to 615ce3a Compare January 11, 2021 20:44
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damemi commented Jan 12, 2021

/kind feature

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ingvagabund
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Can you add a test case for the new flag? In any of the strategies you choose.

Wrt. ignore prefix, we already have ExcludeOwnerKinds and Exclude namespaces fields. Do you think it would make sense to align the new field with existing ones? I.e. excludePVCPods? Even IgnorePVCPods sounds ok to me. Just a thought.

cmd/descheduler/app/options/options.go Outdated Show resolved Hide resolved
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I think we should update README to include the new flag

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damemi commented Jan 25, 2021

Updated this to remove the extra line and added the flag to readme

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ingvagabund commented Jan 26, 2021 •
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Unit test please (to validate user facing change)

@k8s-ci-robot k8s-ci-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 26, 2021
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damemi commented Jan 26, 2021

Sorry, forgot the unit test. Added to PodLifeTime

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/lgtm

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: damemi, lixiang233

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@k8s-ci-robot k8s-ci-robot merged commit 241f132 into kubernetes-sigs:master Jan 27, 2021
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jsravn commented May 6, 2021

Minor nit: could we rename the option from ignorePvcPods to evictPvcPods before this is released? I found the option name confusing - I took it to mean "ignore PVCs when considering a pod for eviction", rather than "ignore pods with PVCs when evicting".

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damemi commented May 6, 2021

Hi @jsravn, thanks for the feedback. The motivation behind naming this ignorePvcPods was the the current default Descheduler behavior is to evict Pvc Pods. So, rather than add the new flag with a default value true, we added it so that it semantically defaults to false, preserving the existing default behavior without any change to behavior.

I hope this clears up the confusion. At this point, I would personally prefer not to make that change since it would be a full invert of the behavior. However if others disagree I am open to the consideration

briend pushed a commit to briend/descheduler that referenced this pull request Feb 11, 2022
Merge pull request kubernetes-sigs#481 from damemi/ignore-pvc-pods
a23043d 
Add option to ignore pods with PVCs from eviction
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@ingvagabund ingvagabund ingvagabund requested changes

@lixiang233 lixiang233 lixiang233 approved these changes

@aveshagarwal aveshagarwal Awaiting requested review from aveshagarwal

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filter pods with pvc volumes
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