DaemonSets should support MaxSurge to improve workload availability

[smarterclayton]

Enhancement Description

• One-line enhancement description: Many infrastructure components (CNI, CSI) require DaemonSets to place pods on each node, but the current update strategies limit end users from minimizing disruption during updates. It should be possible to surge daemonsets if a user requests it to allow handoff from one running pod to another, like Deployments.
• Kubernetes Enhancement Proposal: https://github.com/kubernetes/enhancements/tree/master/keps/sig-apps/1591-daemonset-surge
• Primary contact (assignee): @smarterclayton
• Responsible SIGs: @kubernetes/sig-apps-feature-requests @kubernetes/sig-node-feature-requests
• Enhancement target (which target equals to which milestone):
  • Alpha release target 1.20
  • Beta release target 1.21
  • Stable release target 1.25

[leoskyrocker]

we need it for fluentd so that logs generated by our applications are still being picked up even when update is happening.

[kikisdeliveryservice]

Hi @smarterclayton !

1.19 Enhancements shadow here. I wanted to check in and see if you think this Enhancement will be graduating in 1.19?

In order to have this part of the release:

The KEP PR must be merged in an implementable state
The KEP must have test plans
The KEP must have graduation criteria.

The current release schedule is:

Monday, April 13: Week 1 - Release cycle begins
Tuesday, May 19: Week 6 - Enhancements Freeze
Thursday, June 25: Week 11 - Code Freeze
Thursday, July 9: Week 14 - Docs must be completed and reviewed
Tuesday, August 4: Week 17 - Kubernetes v1.19.0 released

Please let me know and I'll add it to the 1.19 tracking sheet (http://bit.ly/k8s-1-19-enhancements). Once coding begins please list all relevant k/k PRs in this issue so they can be tracked properly. 👍

Thanks!

[kikisdeliveryservice]

As a reminder, enhancements freeze is tomorrow May 19th EOD PST. In order to be included in 1.19 all KEPS must be implementable with graduation criteria and a test plan.

Thanks.

[kikisdeliveryservice]

Unfortunately the deadline for the 1.19 Enhancement freeze has passed. For now this is being removed from the milestone and 1.19 tracking sheet. If there is a need to get this in, please file an enhancement exception.

[fejta-bot]

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[palnabarun]

/remove-lifecycle stale

[kikisdeliveryservice]

Hi @smarterclayton

Enhancements Lead here. Any plans for this in 1.20?

Thanks!
Kirsten

[kikisdeliveryservice]

Hi @smarterclayton

Following up - any plans to start on this in 1.20? Enhancements Freeze is October 6th and the KEP is currently unmerged and provisional (it must be implementable).

Best,
Kirsten