Kubelet Evented PLEG for Better Performance

[harche]

Enhancement Description

• One-line enhancement description (can be used as a release note): Kubelet Evented PLEG for Better Performance
• Kubernetes Enhancement Proposal: https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/3386-kubelet-evented-pleg/README.md
• Discussion Link: https://kubernetes.slack.com/archives/C03HA69L6R1 ,Add runtime events to CRI kubernetes#110165
• Primary contact (assignee): @HirazawaUi
• Responsible SIGs: sig-node
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y): 1.25
  • Beta1 release target (x.y): 1.27 (default false)
  • Revert to alpha: 1.30 (v1.27.9、v1.28.6、v1.29.1)
  • Beta release target (x.y):
  • Stable release target (x.y):
• Alpha
  • API Changes - Update CRI API to support Evented PLEG kubernetes#111642
  • KEP (k/enhancements) update PR(s): KEP-3386: Kubelet Evented PLEG for Better Performance #3387
  • Code (k/k) update PR(s): Add Support for Evented PLEG kubernetes#111384
• Beta (default disabled)
  • KEP (k/enhancements) update
    • PR(s): KEP-3386: Graduate Evented PLEG to Beta #3817
  • Code (k/k) update PR(s):
    • Graduate Evented PLEG to Beta kubernetes#115967
    • OCPNODE-1336: Add a CI Job to run node e2e tests by enabling the evented pleg feature test-infra#28366
    • Add a periodic CI job to test the Evented PLEG feature test-infra#28592
  • Docs (k/website) updates(s):
    • Graduate Evented PLEG to Beta website#39913
• Revert to alpha
  • KEP (k/enhancements) update PR(s):
  • Code (k/k) update PR(s):
    • v1.30(backported): Revert "Graduate Evented PLEG to Beta" kubernetes#122697
    • v1.29: Fix issue in enabling evented pleg feature gate kubernetes#120942
    • v1.30: fix nil pointer dereference when EventedPLEG is enabled kubernetes#122475
  • Docs (k/website) update(s):
• updates
  • Update the latest milestone for KEP-3386 to v1.36 #5891
  • Fix EventedPLEG causes panics under hardware resource pressure kubernetes#134549
  • Fix EventedPLEG causes sidecar pods to hang in Pending state kubernetes#133372
  • kubelet: Fix pod resizing is too slow when using evented PLEG kubernetes#131024
  • [evented pleg]: using real-time container events for pod state determination kubernetes#129355
  • [ ]
• Beta
  • Issues to fix before re-promoting it to beta:
    • Pod lifecycle broken with kubelet's EventedPLEG feature kubernetes#121003
    • blocker bugfix [Failing Test] ci-kubernetes-e2e-kind-beta-features/pull-kubernetes-e2e-kind-beta-features failed for enabling some beta features(by default disabled) kubernetes#121349 WIP in : Fix evented pleg mirror pod & use IsEventedPLEGInUse instead of FG status check kubernetes#122778
    • performance blocker issue fix EventedPLEG: Pass event created timestamp correctly to cache kubernetes#124297 @hshiina
    • add a evented pleg e2e test kubernetes#128258
    • Pod phase transition is slower when EventedPLEG is enabled kubernetes#124704
  • KEP (k/enhancements) update PR(s):
  • Code (k/k) update PR(s):
  • Docs (k/website) update(s):

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

[harche]

/sig-node

[Priyankasaggu11929]

Hello @harche 👋, 1.25 Enhancements team here.

Just checking in as we approach enhancements freeze on 18:00 PST on Thursday June 23, 2022.

For note, This enhancement is targeting for stage alpha for 1.25 (correct me, if otherwise)

Here's where this enhancement currently stands:

• KEP file using the latest template has been merged into the k/enhancements repo.
• KEP status is marked as implementable
• KEP has a updated detailed test plan section filled out
• KEP has up to date graduation criteria
• KEP has a production readiness review that has been completed and merged into k/enhancements.

Looks like for this one, we would need to update the following:

• update the kep.yaml file in the merged KEP to add latest-milestone: "v1.25”

For note, the status of this enhancement is marked as at risk. Thank you for keeping the issue description up-to-date!

[haircommander]

I opened #3410 to target at 1.25

[Priyankasaggu11929]

/sig node

[Priyankasaggu11929]

With KEP PR #3410 merged, the enhancement is ready for the 1.25 Enhancements Freeze.

For note, the status is now marked as tracked. Thank you so much! 🙂