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2026 (11)

September (9)

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: 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.

k8s: Kubernetes v1.37: KubeletInUserNamespace (aka Rootless mode) Graduates to Beta

Kubernetes Official Blog

2026-09-04

Kubernetes v1.37 moves KubeletInUserNamespace to beta and enables the feature gate by default. It allows node components to run as a non-root user in a Linux user namespace, reducing host impact from node-component exploits, while leaving existing rootful clusters unchanged unless explicitly configured.

k8s: Kubernetes v1.37: DRA Updates

Kubernetes Official Blog

2026-09-03

Kubernetes 1.37 adds several DRA updates, including GA support for extended resources, stable device taints/tolerations, and stable standardized NUMA node attributes. It also promotes multiple DRA features to Beta or Alpha, with focus areas including workload-level ResourceClaims, device metadata/status, scheduling performance, and fractional consumable capacity.

k8s: Kubernetes v1.37: Scale Workloads to Zero with HorizontalPodAutoscaler

Kubernetes Official Blog

2026-09-02

Kubernetes v1.37 makes HorizontalPodAutoscaler scale workloads down to zero replicas by default when using object or external metrics. The feature is Beta; it requires a metric source that remains available at zero replicas, and the controller marks zero-state ownership with a ScaledToZero condition.

k8s: Kubernetes v1.37: etcd RangeStream Cuts Memory Use on Large List Reads

Kubernetes Official Blog

2026-09-01

Kubernetes v1.37 graduates the EtcdRangeStream feature to beta and enables it by default. With etcd v3.7+, the API server can stream large collection reads instead of assembling whole pages in memory, reducing peak memory use and making it more predictable.

August (2)

k8s: Kubernetes v1.37: Garhwal

Kubernetes Official Blog

2026-08-26

Kubernetes v1.37 ships 67 enhancements: 16 Stable, 23 Beta, 27 Alpha, and 1 deprecation/removal. Key changes include resilient watchcache initialization, HPA scale-to-zero, manifest-based admission config, Pod checkpoint/restore, broader Dynamic Resource Allocation support, and multiple scheduler, storage, node, and observability updates.

azure: [In preview] Public Preview: Azure Linux on WSL

Azure Updates

2026-08-17

Azure Linux on WSL is available in Public Preview (Beta). It lets teams run Azure Linux on developer workstations to validate production-aligned behavior, reproduce issues more reliably, and reduce debugging time.