Allow StatefulSet to control start replica ordinal numbering

[pwschuurman]

Enhancement Description

• One-line enhancement description (can be used as a release note): Added a feature that allows a StatefulSet to start numbering replicas from an arbitrary non-negative ordinal, using the .spec.ordinals.start field.
  • KEP-3335 Link
  • KEP-3335 PR: KEP-3335: StatefulSet Start Ordinal #3336
• Discussion Link:
  • sig-storage June 2, 2022
  • sig-apps June 13, 2022
  • sig-multicluster July 26, 2022
• Primary contact (assignee): @pwschuurman
• Responsible SIGs: sig-apps, sig-multicluster, sig-storage
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y): 1.26
  • Beta release target (x.y): 1.27
  • Stable release target (x.y): 1.31
• Alpha
  • KEP (k/enhancements) update PR(s): KEP-3335: StatefulSet Start Ordinal #3336
  • Code (k/k) update PR(s): Add implementation of KEP-3335, StatefulSetSlice kubernetes#112744
  • Docs (k/website) update PR(s): Add initial documentation for StatefulSetSlice feature website#37224
• Beta
  • KEP (k/enhancements) update PR(s): KEP-3335: Update beta milestone to 1.27 #3768
  • Code (k/k) update PR(s): Move StatefulSetStartOrdinal feature gate to beta kubernetes#115260
  • Metrics (k/kube-state-metrics) update PR(s): Add StatefulSet Start Ordinal metrics for KEP-3335 kube-state-metrics#1959
  • Tests (k/k) unit PR(s): Add enablement/disablement unit test for StatefulSetStartOrdinal feature kubernetes#115536
  • Tests (k/k) integration PR(s): Add integration tests for StatefulSetStartOrdinal feature kubernetes#115466
  • Tests (k/k) e2e PR(s): Add e2e tests for StatefulSetStartOrdinal feature kubernetes#115468
  • Docs (k/website) update(s): Update StatefulSetStartOrdinal documentation to target beta in 1.27 website#39823
• Stable
  • KEP (k/enhancements) update PR(s): KEP-3335: Update stable milestone to 1.31 #4694
  • Code (k/k) update PR(s): Promote StatefulSetStartOrdinal to stable in 1.31 kubernetes#125374
  • Metrics (k/kube-state-metrics) update PR(s): feat: Promote kube_statefulset_ordinals_start from ALPHA -> STABLE kube-state-metrics#2415
  • Docs (k/website) update(s): Remove StatefulSetStartOrdinal feature gate to target stable in 1.31 website#46719
  • KEP (k/enhancements) status implemented PR(s): Update KEP-3335 kep.yaml to status: implemented #4955

Please keep this description up to date. This will help the Enhancement Team to track the evolution of the enhancement efficiently.

[k8s-triage-robot]

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/lifecycle stale

[pwschuurman]

/sig multicluster

[JeremyOT]

/label lead-opted-in

[rhockenbury]

/milestone v1.26
/label tracked/yes
/stage alpha