Kubernetes
496 briefings in the desk
Spotlight on SIG Apps
As Kubernetes adoption has grown, the conversation has shifted beyond running containers to managing increasingly complex application lifecycles. Modern platforms support stateless web services, stateful databases, batch processing, AI…
Kubernetes v1.37: Tracking When a PersistentVolumeClaim Was Last Used (Beta)
Kubernetes v1.37 promotes the PersistentVolumeClaimUnusedSinceTime feature gate to Beta (enabled by default). With this feature, the PersistentVolumeClaim (PVC) protection controller adds an Unused condition to each PVC, telling you…
Kubernetes v1.37: Hardening Container Storage with Bind Mount Options and EmptyDir Permissions
Kubernetes v1.37 brings important storage security features: emptyDir permission modes and bind mount options. They help application programmers and security professionals implement rigorous security policies, for example, prohibiting…
Kubernetes v1.37: Pod-Level Resource Managers graduated to Beta
With the release of Kubernetes v1.37, the Pod-Level Resource Managers feature has graduated to Beta status (disabled by default)! First introduced as an Alpha feature in Kubernetes v1.36, this enhancement builds on Pod-Level Resources by…
Kubernetes Changed Block Tracking API - Beta Differences
Changed Block Tracking (CBT) support for CSI drivers shipped as Alpha in September 2025. With the March 2026 v1.0.0 release of the external-snapshot-metadata project, the feature moved to Beta. If you aren't yet familiar with changed block…
Kubernetes v1.37: Memory QoS Graduates to Beta
Memory QoS has graduated to Beta in Kubernetes v1.37 and is now enabled by default. On Linux nodes running cgroup v2, the feature uses the memory controller to give the kernel better guidance on how to treat container memory. It was first…
Kubernetes v1.37: Native Histograms Graduates to Beta
I'm excited to announce that native histogram support for Kubernetes metrics is graduating to Beta and is enabled by default in Kubernetes v1.37! Native histograms (previously introduced as Alpha in Kubernetes v1.36 under KEP-5808) bring…
Kubernetes v1.37: Scheduler Preemption for In-Place Pod Resize (Alpha)
In Kubernetes, resource allocation has historically been a static decision made during a Pod's initial scheduling and placement. With the graduation of the core in-Place Pod resize feature to General Availability in v1.35, application…
Kubernetes v1.37: Introducing Node Lifecycle Conditions
Kubernetes has many ways to describe what is happening on a Node. Readiness, taints, Pod state, labels, annotations, and provider-specific APIs each expose part of the picture. What has been missing is a shared, Kubernetes-owned way to say…
Kubernetes v1.37: Advancing Workload-Aware Scheduling
AI/ML and complex batch workloads continue to push the boundaries of Kubernetes scheduling. Following the foundational workload-centric enhancements introduced in previous releases, Kubernetes v1.37 delivers the next major milestone in the…
Kubernetes v1.37: KubeletInUserNamespace (aka Rootless mode) Graduates to Beta
Kubernetes v1.37 promotes the KubeletInUserNamespace feature gate to beta. With this feature enabled, all of the node components (kubelet, CRI and OCI runtimes, CNI plugins, and kube-proxy) can run as a non-root user on the host, using a…
Kubernetes v1.37: DRA Updates
Kubernetes 1.37 is here and Dynamic Resource Allocation (DRA) keeps pushing past where it started! This release brings DRA Extended Resource support to GA, a milestone the team has been building toward for three straight releases. Several…
Kubernetes v1.37: Scale Workloads to Zero with HorizontalPodAutoscaler
Kubernetes v1.37 includes API support for horizontal autoscaling of workloads down to zero replicas. This feature is now Beta and enabled by default. A HorizontalPodAutoscaler (HPA) that uses a suitable object metric or external metric can…
Kubernetes v1.37: etcd RangeStream Cuts Memory Use on Large List Reads
I am excited to announce that etcd RangeStream is graduating to beta in Kubernetes v1.37. Paired with etcd v3.7, it reduces the memory the API server and etcd need to read a large collection, and makes peak usage more predictable. The cost…
Kubernetes v1.37: Storage Version Migration Enabled by Default
I am excited that storage version migration (SVM) has graduated to General Availability (GA) in Kubernetes v1.37! After a number of releases of work and testing, the built-in StorageVersionMigration API (storagemigration.k8s.io/v1) and…
Kubernetes v1.37: Pod Certificates and Cluster Trust Bundles
Kubernetes brings a wealth of features that make it easy to run your production workloads securely and reliably. While aspects like scheduling, health checks and resource limits are probably at the front of your mind, one other important…
Kubernetes v1.37: Metrics API graduates to stable
Kubernetes v1.37 promotes the metrics.k8s.io API to stable (v1). This API provides CPU and memory usage for nodes and Pods, and is the API behind commands such as kubectl top and resource-metrics-based autoscaling. For cluster operators…
Kubernetes v1.37: Garhwal
Editors: Arsh Sharma, Christopher Tineo, Kirti Goyal, Sophia Ugochukwu, Swathi Rao, Troy Connor Similar to previous releases, the release of Kubernetes v1.37 introduces new Stable, Beta, and Alpha features. The consistent delivery of…
How to Pretty-Print Your Kubernetes YAML as KYAML and Why You'd Want To
YAML has been the standard way to write Kubernetes manifests for years. Every example, tutorial, and configuration file you come across is written in it. The problem isn't that YAML is a bad format. It's that YAML gives you a lot of…
Gateway API v1.6: TCPRoute and UDPRoute Graduate to Standard
The Kubernetes SIG Network community is thrilled to share the release of Gateway API v1.6.0, which was released on June 30th of this year! Gateway API has become the standard for modern, role-oriented, and expressive service networking in…
Kubernetes v1.37 Sneak Peek
As we get closer to the release date for Kubernetes v1.37, the project develops and matures, features may be deprecated, removed, or replaced with better ones for the project's overall health. This blog outlines some of the planned changes…
How the controller-runtime Cache Actually Works, and Why Your Controller Does Not Crash the API Server
This article has been revised since it was first published, to correct several significant technical inaccuracies in the original text. Kubernetes has long been the default platform for distributed workloads, and writing your own…
Building a Custom Metrics Exporter for Kubernetes
Kubernetes ships with built-in awareness of CPU and memory, but most real-world scaling decisions depend on signals that live entirely outside that narrow window: how many messages are waiting in a queue, how long the last batch job took,…
Operating AI/ML Workloads on Kubernetes: A Headlamp Plugin for Kubeflow
Kubernetes has quietly become the default platform for AI and machine learning. Whether you run notebook servers for data scientists, schedule distributed training jobs, tune hyperparameters, or orchestrate multi-step ML pipelines, those…