Week Ending June 6, 2021

Developer News

Our latest set of patch releases contain a regression, which can cause kubelet crashes in clusters that use DockerShim (and might affect some other clusters using forks of other container runtimes). If you are still on an earlier patch version, SIG-Release advises you not to update at this time. New patch releases with a fixed regression will be available next week. Release Engineering is planning on doing one additional final patch to 1.18 with the other patch releases this month instead.

Eddie Zane of SIG-CLI started a discussion around plans to make it a tad more difficult to accidentally delete your entire cluster. Read the thread for some good discussion and comment if you need to.

Release Schedule

Next Deadline: Feature Exceptions Due, June 28th

It’s still feature-hacking period, so if you’re not actively hacking on a feature (or even if you are), now is a good time to fix some flaky tests. This week SIG-API-Machinery, SIG-Storage, and SIG-Cloud-Provider own our new flakes, so if y’all could take a look at those that would be great. With 6 blocking tests flaking, and 13 informing tests not passing, this is gonna be one sloooow release cycle if we don’t get those fixed.

Cherry-picks for patch releases are due June 12th for a June 16th release. This will include an additional release in the 1.18 series, 1.18.20, because of the regression introduced with 1.18.19; that patch will reverse the regression and nothing more. Regardless, 1.18 users should really really plan to upgrade ASAP because there will be no further patches in that version.

Merges

• kubectl get pods has new “LAST RESTART” column, so you can pick out your cyclically failing pods; congrats to Jordan Jacobelli on his first merged PR!
• Don’t use log sampling with structured logs
• Watch requests can be throttled by Priority & Fairness filters
• Clarify difference between SCTP E2E tests and SCTP-tolerance E2E tests
• Prevent possible volume corruption when a pod is deleted with the kubelet down

Promotions

• CronJobs V2 to GA
• Prefer Nominated Node to Beta, so you folks with custom schedulers and large complicated clusters, please give it a test?

Deprecated

SIG-Storage wants to know if anyone is using Balanced Attached Node Volumes because if nobody speaks up, they’re going to delete the API for it

• Revert portforwarding cleanup across all backports (see News), and replace with fixed implementation
• Remove --ssh options that are deprecated and only ever worked on GCE anyway
• Pod Autoscaler removes some legacy metrics

Version Updates

• debian-iptables to v1.6.2 in official images
• json-patch to v4.11.0

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