DRA: structured parameters

[pohly]

Enhancement Description

• One-line enhancement description (can be used as a release note): The original dynamic resource allocation (DRA) uses claim and class parameters that are opaque to Kubernetes. With structured parameters, kube-scheduler can handle and Cluster Autoscaler can simulate claim allocation themselves without relying on a third-party driver.

• Kubernetes Enhancement Proposal: https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/4381-dra-structured-parameters/

• Discussion Link: Batch WG meeting 20231207, DRA intro and plan in that meeting

• Primary contact (assignee): @pohly

• Responsible SIGs: SIG Node

• Enhancement target (which target equals to which milestone):

  • Alpha release target (x.y): 1.30-1.31
  • Beta release target (x.y): 1.32-1.33
  • Stable release target (x.y): 1.34

• Alpha in 1.30

  • KEP (k/enhancements) update PR(s): KEP 4381: add structured parameters for dynamic resource allocation #4384
  • Code (k/k) update PR(s): DRA: structured parameters kubernetes#123516
  • Docs (k/website) update PR(s): DRA in Kubernetes 1.30: adds structured parameters website#45287

• Alpha in 1.31

  • KEP (k/enhancements) update PR(s): KEP-4381: DRA update for 1.31 #4709
  • Code (k/k) update PR(s): DRA for 1.31 kubernetes#125488
  • Docs (k/website) update PR(s): DRA documentation for 1.31 website#46816

• Beta in 1.32

  • KEP (k/enhancements) update PR(s): KEP-4381: DRA: PRR and API for beta of structured parameters in 1.32 #4869
  • Code (k/k) update PR(s):
    • DRA resourceclaims: maintain metric of total and allocated claims kubernetes#127661
    • DRA API: AdminAccess in DeviceRequestAllocationResult + DRAAdminAccess feature gate kubernetes#127266
    • DRA API: implement CEL cost limit kubernetes#128101
    • Kubelet: add DRA latency metrics kubernetes#127146
    • DRA resourceclaims: maintain metric of total and allocated claims kubernetes#127661
    • DRA 1.32 API: promotion to beta kubernetes#127511
  • Docs (k/website) update(s): DRA 1.32: beta website#48330

• Beta in 1.33

  • KEP (k/enhancements) update PR(s): KEP-4381: Update GA graduation criteria #5160
  • Code (k/k) update PR(s):
    • DRA: add user rbac kubernetes#130738
  • Docs (k/website) update(s): none planned

• Stable in 1.34 (enabled by default, not locked to default)

  • KEP (k/enhancements) update PR(s): KEP 4381: DRA structured parameters: updates, promotion to GA #5333
  • Code (k/k) update PR(s):
  • Docs (k/website) update(s):

[pohly]

/sig node
/wg batch

The rationale behind creating a separate KEP is that this is an extension of DRA that (at least in theory) could graduate at its own pace. The KEP document itself also will be shorter, which will make discussing it easier.

[SergeyKanzhelev]

/stage alpha
/milestone v1.30