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🐛machinepool: Conditionally delegate taint removal - #14053

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rexagod wants to merge 1 commit into
kubernetes-sigs:mainfrom
rexagod:8258
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🐛machinepool: Conditionally delegate taint removal#14053
rexagod wants to merge 1 commit into
kubernetes-sigs:mainfrom
rexagod:8258

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@rexagod

@rexagod rexagod commented Aug 10, 2026

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What this PR does / why we need it: Delegate uninitialized taint removal to the Machine controller when Machines do exist. Unlike earlier, both MachinePool and Machine controllers raced to drop the taint, which was unpredictable and could potentially cause problems with inequality-based selectors (see 1 for more), for instance.

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 #8258

/area machinepool

Delegate uninitialized taint removal to the Machine controller when
Machines do exist. Unlike earlier, both MachinePool and Machine
controllers raced to drop the taint, which was unpredictable and could
potentially cause problems with inequality-based selectors (see [1] for
more).

[1]:kubernetes-sigs#8258 (comment)
@kubernetes-prow kubernetes-prow Bot added the area/machinepool Issues or PRs related to machinepools label Aug 10, 2026
@kubernetes-prow kubernetes-prow Bot 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 Aug 10, 2026
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[APPROVALNOTIFIER] This PR is NOT APPROVED

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@rexagod rexagod changed the title machinepool: Conditionally delegate taint removal ✨machinepool: Conditionally delegate taint removal Aug 10, 2026
@rexagod rexagod changed the title ✨machinepool: Conditionally delegate taint removal 🐛machinepool: Conditionally delegate taint removal Aug 10, 2026
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/assign @richardcase @mboersma

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area/machinepool Issues or PRs related to machinepools 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.

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uninitialized taint should always be dropped

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