Kubernetes - 2

2025 (12)

October (4)

azure: [Launched] Generally Available: New OS SKU enum to migrate to Azure Linux 3.0

Azure Updates

2025-10-17

Azure now provides a new OS SKU enum, 'AzureLinux3', that lets you migrate to Azure Linux 3.0 for clusters running Kubernetes versions 1.28–1.36. The option gives increased control over OS upgrades by decoupling them from Kubernetes upgrades.

azure: [Launched] Generally Available: Open-Source - Containerization Assist MCP Server

Azure Updates

2025-10-13

Microsoft announced the general availability of the open-source Containerization Assist MCP Server, a full containerization platform that automates Dockerfile creation and Kubernetes manifest generation to reduce manual, error-prone work. The service is built on the proven AKS Draft technology and aims to be more than a basic AI coding tool by providing end-to-end containerization support.

azure: [Launched] Generally Available: AI toolchain operator add-on (KAITO) for AKS

Azure Updates

2025-10-07

Microsoft announced general availability of the AI toolchain operator add-on (KAITO) for Azure Kubernetes Service (AKS). KAITO streamlines deployment of AI inference and fine-tuning workflows using popular open-source frameworks, with vLLM set as the default inference engine to simplify management and scaling of model serving.

k8s: Introducing Headlamp Plugin for Karpenter - Scaling and Visibility

Kubernetes Official Blog

2025-10-06

The Headlamp Karpenter Plugin integrates Karpenter autoscaling visibility into the Headlamp Kubernetes UI, providing real‑time maps, metrics, scaling decisions, pending‑pod diagnostics, and an editable, validated config editor to help users understand, debug, and tune node provisioning and autoscaling behavior.

September (8)

aks: Release 2025-09-21

Release notes from AKS

2025-09-27

AKS release v20250921 includes new previews and GA features, multiple deprecations and retirements, security and component upgrades, bug fixes, and several behavioural changes. Important actions: upgrade clusters from deprecated Kubernetes/Azure Linux versions, migrate deprecated add-ons, and review node pool and networking defaults to ensure compatibility.

azure: Retirement: Azure App Service on Azure Arc enabled Kubernetes

Azure Updates

2025-09-26

Azure App Service on Azure Arc enabled Kubernetes will be retired beginning September 30, 2025. After that date customers will no longer be able to install the extension; Microsoft requests customers migrate to other solutions to continue hosting application workloads.

k8s: Announcing Changed Block Tracking API support (alpha)

Kubernetes Official Blog

2025-09-25

Kubernetes announces alpha support for a Changed Block Tracking API that lets CSI drivers report allocated and changed blocks between snapshots to enable faster, incremental backups for block volumes. The feature requires a SnapshotMetadataService CRD, an external-snapshot-metadata sidecar, and CSI SnapshotMetadata gRPC RPCs (GetMetadataAllocated and GetMetadataDelta) with streaming responses.

k8s: Kubernetes v1.34: Pod Level Resources Graduated to Beta

Kubernetes Official Blog

2025-09-22

Kubernetes v1.34 graduates Pod Level Resources to Beta and enables it by default. The feature lets you declare CPU, memory and hugepages for an entire Pod (in addition to per-container settings), with pod-level requests used for scheduling and pod-level limits acting as an absolute runtime cap; it improves intra-pod sharing and QoS handling but has several platform and feature limitations.

k8s: Kubernetes v1.34: Recovery From Volume Expansion Failure (GA)

Kubernetes Official Blog

2025-09-19

Kubernetes v1.34 graduates automated recovery from failed persistent volume expansions to GA. Users can correct an over-sized PersistentVolumeClaim (PVC) by reducing the requested size (as long as the new request is still larger than the PV's original capacity) without cluster-admin intervention; consumed quota from a failed expansion is returned automatically. The release also introduces improved observability and error reporting for expansion operations, retries with reduced request rates, and several resizing workflow bug fixes.

azure: [In preview] Public Preview: Azure Kubernetes Fleet Manager – auto-upgrade target Kubernetes version channel

Azure Updates

2025-09-19

Azure Kubernetes Fleet Manager (Public Preview) adds a new auto-upgrade channel that lets you set a target Kubernetes minor version. Clusters on that target minor will receive only patch updates (no minor upgrades) until the minor reaches end-of-life.

k8s: Kubernetes v1.34: DRA Consumable Capacity

Kubernetes Official Blog

2025-09-18

Kubernetes v1.34 introduces the alpha feature DRAConsumableCapacity for Dynamic Resource Allocation (DRA). It enables finer-grained, consumable device capacity so multiple ResourceClaims or DeviceRequests (even across namespaces) can share portions of a device. The scheduler enforces total consumable capacity, drivers can opt into multiple allocations and define request policies, and a ShareID in allocation status distinguishes individual shared slices. The feature requires enabling a feature gate on control plane and kubelet components and complements other DRA improvements like partitionable devices and device status.

azure: [In preview] Public Preview: Azure Kubernetes Fleet Manager – update run approval gates

Azure Updates

2025-09-18

Azure Kubernetes Fleet Manager (public preview) now lets you add approval gates to update runs. Gates can be placed before and after update groups and stages to give operators manual control over the progression of an update run.