K8s - 1

2026 (12)

October (5)

k8s: From Working Group to SIG Architecture: spotlight on AI Conformance

Kubernetes Official Blog

2026-10-29

Kubernetes moved AI Conformance from a temporary Working Group into a permanent SIG Architecture subproject after establishing the initial requirements and certification process. The change is meant to keep AI infrastructure requirements vendor-neutral and aligned with Kubernetes architecture as AI workloads become more common.

k8s: Announcing the Workload Conformance Working Group

Kubernetes Official Blog

2026-10-27

Kubernetes announced a new Workload Conformance Working Group to define a shared, testable standard for workload behavior at runtime. The group will produce a per-minor-version specification, objective tests, and upstream conformance tooling, with initial coverage focused on runtime behavior rather than application logic.

k8s: Why Is My Kubernetes Job Still Pending? Tracing Kueue Admission with Headlamp

Kubernetes Official Blog

2026-10-14

The article introduces the Headlamp Kueue plugin, which helps trace why a Kubernetes Job is still suspended by checking Kueue admission state before looking at Pod scheduling. It walks through a Headlamp-based workflow for inspecting Workloads, LocalQueues, ClusterQueues, ResourceFlavors, and Cohorts, and notes that the 0.1.0-alpha release is read-only.

k8s: The Shift to cgroup v2 in Kubernetes: What You Need to Know

Kubernetes Official Blog

2026-10-06

Kubernetes is deprecating cgroup v1 and is moving toward cgroup v2 as the default path: in v1.35, kubelet startup fails by default on cgroup v1 nodes, and kubeadm preflight checks now error on v1.35+ when v1 is detected. The post also summarizes cgroup v2-related behaviors and features in Kubernetes 1.36, including Memory QoS, container-scoped OOM handling, PSI metrics, and in-place pod-level resource updates.

k8s: Scaling Kubernetes Workloads with Node Swap

Kubernetes Official Blog

2026-10-05

Kubernetes node swap is now GA in v1.34, and this post reports that using fast NVMe Local SSDs for swap can raise pod density for memory-heavy workloads with little latency impact when active working sets remain in RAM.

September (7)

k8s: Spotlight on SIG Apps

Kubernetes Official Blog

2026-09-22

SIG Apps is working on workload controller reliability, node lifecycle handling, and new patterns for AI and distributed workloads while preserving backward compatibility. The article highlights current focus areas, the trade-offs in changing core APIs, and a proposed Job API update for Kubernetes 1.38.

k8s: Kubernetes v1.37: Tracking When a PersistentVolumeClaim Was Last Used (Beta)

Kubernetes Official Blog

2026-09-21

Kubernetes v1.37 promotes PersistentVolumeClaimUnusedSinceTime to Beta and enables it by default. PVCs now get an Unused condition in status so you can tell whether any running or pending pod references the claim, and use lastTransitionTime to see when it last became idle.

k8s: Kubernetes v1.37: Hardening Container Storage with Bind Mount Options and EmptyDir Permissions

Kubernetes Official Blog

2026-09-16

Kubernetes v1.37 adds alpha support for bind mount options on volume mounts and configurable permission modes for emptyDir volumes. These features let users apply Linux mount flags like noexec, nosuid, and nodev, and set emptyDir modes such as 01777 or 0750 without init-container workarounds.

k8s: Kubernetes v1.37: Pod-Level Resource Managers graduated to Beta

Kubernetes Official Blog

2026-09-15

Kubernetes v1.37 graduates Pod-Level Resource Managers to Beta, disabled by default behind the PodLevelResourceManagers feature gate. Kubelet’s Topology Manager, CPU Manager, and Memory Manager can now use pod-level resource declarations for NUMA-aware placement, and the PodResources API reports top-level CPU and memory assignments.

k8s: Kubernetes v1.37: Memory QoS Graduates to Beta

Kubernetes Official Blog

2026-09-14

Kubernetes v1.37 makes Memory QoS Beta and turns it on by default, but it does not change runtime behavior unless you explicitly set throttling or reservation fields. The main config change is that `memoryThrottlingFactor` now defaults to `null`, so existing clusters will not start writing `memory.high` unless they already set it.

k8s: Kubernetes Changed Block Tracking API - Beta Differences

Kubernetes Official Blog

2026-09-14

Kubernetes changed block tracking for CSI drivers is now Beta with external-snapshot-metadata v1.0.0. The main Beta change is promotion of SnapshotMetadataService from cbt.storage.k8s.io/v1alpha1 to v1beta1, with no schema change but no served v1alpha1 version.

k8s: Kubernetes v1.37: Native Histograms Graduates to Beta

Kubernetes Official Blog

2026-09-11

Kubernetes v1.37 enables native histogram support for metrics by default and moves the feature to Beta. Components now dual-expose classic buckets and native spans, and users must adjust Prometheus scraping and queries depending on Prometheus version.