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Added types of podManagementPolicy to StatefulSet documentation #51256

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Add podManagementPolicy field to StatefulSet documentation. Part of kubernetes/enhancements#5228

@k8s-ci-robot k8s-ci-robot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. language/en Issues or PRs related to English language labels Jun 14, 2025
@k8s-ci-robot k8s-ci-robot added the size/S Denotes a PR that changes 10-29 lines, ignoring generated files. label Jun 14, 2025
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Comment on lines +366 to +376
#### PodManagementPolicy

You can determine the order at which the pods are deleted by specifying the `.spec.PodManagementPolicy`
field. There are two policies that you can configure for each StatefulSet:

`parallel`
: When updating, there will always be maxUnavailable number of pods terminating except the last batch

`orderedReady`
: When updating, the number of pods terminating won't always be maxUnavailable, but sometimes less than
that. This implementation avoids out of order Terminations of pods.
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I definitely recommend hyperlinking to the existing Pod management policies section.

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