Posts in 2025

  • Kubernetes v1.33: Image Volumes graduate to beta!

    By Sascha Grunert (Red Hat) | Tuesday, April 29, 2025 in Blog

    Image Volumes were introduced as an Alpha feature with the Kubernetes v1.31 release as part of KEP-4639. In Kubernetes v1.33, this feature graduates to beta. Please note that the feature is still disabled by default, because not all container …

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  • Kubernetes v1.33: HorizontalPodAutoscaler Configurable Tolerance

    By Jean-Marc François (Google) | Monday, April 28, 2025 in Blog

    This post describes configurable tolerance for horizontal Pod autoscaling, a new alpha feature first available in Kubernetes 1.33. What is it? Horizontal Pod Autoscaling is a well-known Kubernetes feature that allows your workload to automatically …

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  • Kubernetes v1.33: User Namespaces enabled by default!

    By Rodrigo Campos Catelin (Microsoft), Giuseppe Scrivano (Red Hat), Sascha Grunert (Red Hat) | Friday, April 25, 2025 in Blog

    In Kubernetes v1.33 support for user namespaces is enabled by default. This means that, when the stack requirements are met, pods can opt-in to use user namespaces. To use the feature there is no need to enable any Kubernetes feature flag anymore! In …

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  • Kubernetes v1.33: Continuing the transition from Endpoints to EndpointSlices

    By Dan Winship (Red Hat) | Thursday, April 24, 2025 in Blog

    Since the addition of EndpointSlices (KEP-752) as alpha in v1.15 and later GA in v1.21, the Endpoints API in Kubernetes has been gathering dust. New Service features like dual-stack networking and traffic distribution are only supported via the …

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  • Kubernetes v1.33: Octarine

    By Kubernetes v1.33 Release Team | Wednesday, April 23, 2025 in Blog

    Editors: Agustina Barbetta, Aakanksha Bhende, Udi Hofesh, Ryota Sawada, Sneha Yadav Similar to previous releases, the release of Kubernetes v1.33 introduces new stable, beta, and alpha features. The consistent delivery of high-quality releases …

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  • Kubernetes v1.33: Job's Backoff Limit Per Index Goes GA

    By Michał Woźniak (Google) | Wednesday, April 23, 2025 in Blog

    In Kubernetes v1.33, the Backoff Limit Per Index feature reaches general availability (GA). This blog describes the Backoff Limit Per Index feature and its benefits. About Backoff Limit Per Index When you run workloads on Kubernetes, you must …

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  • Kubernetes 1.33: Job's SuccessPolicy Goes GA

    Wednesday, April 23, 2025 in Blog

    On behalf of the Kubernetes project, I'm pleased to announce that Job success policy has graduated to General Availability (GA) as part of the v1.33 release. About Job's Success Policy In batch workloads, you might want to use leader-follower …

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  • Kubernetes Multicontainer Pods: An Overview

    By Agata Skorupka (The Scale Factory) | Tuesday, April 22, 2025 in Blog

    As cloud-native architectures continue to evolve, Kubernetes has become the go-to platform for deploying complex, distributed systems. One of the most powerful yet nuanced design patterns in this ecosystem is the sidecar pattern—a technique that …

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  • Introducing kube-scheduler-simulator

    By Kensei Nakada (Tetrate) | Monday, April 07, 2025 in Blog

    The Kubernetes Scheduler is a crucial control plane component that determines which node a Pod will run on. Thus, anyone utilizing Kubernetes relies on a scheduler. kube-scheduler-simulator is a simulator for the Kubernetes scheduler, that started as …

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  • Navigating Failures in Pods With Devices

    By Sergey Kanzhelev (Google) Mrunal Patel (RedHat) | Tuesday, April 01, 2025 in Blog

    Kubernetes is the de facto standard for container orchestration, but when it comes to handling specialized hardware like GPUs and other accelerators, things get a bit complicated. This blog post dives into the challenges of managing failure modes …

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