Week Ending September 22, 2024

Developer News

You have one day (or less) left to vote for Steering Committee members.

The call for presentations for the Maintainer Summit in Kubecon India is now open. The Maintainer summit combines a Kubernetes Contributor Summit with contributor discussions and presentations by other CNCF projects.

Release Schedule

Next Deadline: Production Readiness, October 3

It’s the second week of 1.32 and hopefully you’re hard at work on your planned Enhancements.

KEP of the Week

KEP 2837: Pod level resource limits

Currently resource allocation in PodSpec is done at the container level. The scheduler aggregates the resources requested by all the containers to find a suitable Node for the Pod. The Pod API lacks a way to specify limits at the Pod level, limiting the flexibility and ease of resource management for Pods as a whole. This KEP extends the Pod API with a resource spec at the Pod level. This new feature can be used to complement the existing resource limits and make things easier for tightly coupled applications. The KEP explains how the resource limits will be applied in different cases when Pod level and container level requests and limits are specified, as well as how the OOM score calculation will be done.

This KEP is tracked for alpha stage in the upcoming v1.32 release.

Other Merges

Prevented legacy allocator range misinitialization, preventing IP conflicts.
Extended discovery GroupManager with Group lister interface
Explicit control of metrics collection in scheduler_perf tests, supporting multi-namespace
Ensure kubeadm join/reset handles etcd members only if their URLs/IDs are unique or exist
GPU tests using Jobs, simplifying the process to verify successful completion with cupy instead of CUDA samples
Make sure to trigger Node/Delete event
Feature enhancement reinstating the Nvidia DaemonSet installation in the GCE test harness
Feature(scheduler): more fine-grained Node QHint for nodeunschedulable plugin and fixes
Optimized the Unstructured.GetManagedFields function by eliminating unnecessary deep copying of JSON value
Register missing Pod event for NodeUnschedulable plugin
Test improvements: nvidia GPU(s)
Fix setting resolvConf in drop-in kubelet config files
Make sure that the endpoints controller can reconcile the Endpoint object when it has more than 1000 addresses
Added integration tests for NodeUnschedulable, podtopologyspread & NodeResourcesFit in requeueing scenarios
Support added for API streaming
Improvisation in precision of Quantity.AsApproximateFloat64
Adds an 8-length buffer to the resourceupdates.Update channel to prevent blocking during device plugin data transmission to kubelet
If the application/json;as=Table content type is requested, the WatchList will respond with a 406 (Not Acceptable) error
Improve the kubelet test coverage
Prevent the garbage collector controller from blocking indefinitely on a cache sync failure
Ensure that mismatched hostname labels and node names do not lead to incorrect pod scheduling or failures with nodeAffinity
Test case added for parsing a WSL 2 kernel version
Guarantee that restartable and non-restartable init containers are accounted
Prevent Memory manager UnexpectedAdmissionError
spec.terminationGracePeriodSeconds should not be overwritten by MaxPodGracePeriodSeconds

Promotions

RetryGenerateName to GA

Deprecated

Remove obsolete test ClusterDns and fixes flaking
Remove node general update event from EventsToRegister when QHint is enabled

Version Updates

Last Week In Kubernetes Development (LWKD) is a product of multiple contributors participating in Kubernetes SIG Contributor Experience. All original content is licensed Creative Commons Share-Alike, although linked content and images may be differently licensed. LWKD does collect some information on readers, see our privacy notice for details.

You may contribute to LWKD by submitting pull requests or issues on the LWKD github repo.