Posts in 2022

  • Kubernetes 1.25: CustomResourceDefinition Validation Rules Graduate to Beta

    By Joe Betz (Google), Cici Huang (Google), Kermit Alexander (Google) | Friday, September 23, 2022 in Blog

    In Kubernetes 1.25, Validation rules for CustomResourceDefinitions (CRDs) have graduated to Beta! Validation rules make it possible to declare how custom resources are validated using the Common Expression Language (CEL). For example: apiVersion: …

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  • Kubernetes 1.25: Use Secrets for Node-Driven Expansion of CSI Volumes

    By Humble Chirammal (Red Hat), Louis Koo (deeproute.ai) | Wednesday, September 21, 2022 in Blog

    Kubernetes v1.25, released earlier this month, introduced a new feature that lets your cluster expand storage volumes, even when access to those volumes requires a secret (for example: a credential for accessing a SAN fabric) to perform node expand …

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  • Kubernetes 1.25: Local Storage Capacity Isolation Reaches GA

    By Jing Xu (Google) | Monday, September 19, 2022 in Blog

    Local ephemeral storage capacity isolation was introduced as a alpha feature in Kubernetes 1.7 and it went beta in 1.9. With Kubernetes 1.25 we are excited to announce general availability(GA) of this feature. Pods use ephemeral local storage for …

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  • Kubernetes 1.25: Two Features for Apps Rollouts Graduate to Stable

    By Ravi Gudimetla (Apple), Filip Křepinský (Red Hat), Maciej Szulik (Red Hat) | Thursday, September 15, 2022 in Blog

    This blog describes the two features namely minReadySeconds for StatefulSets and maxSurge for DaemonSets that SIG Apps is happy to graduate to stable in Kubernetes 1.25. Specifying minReadySeconds slows down a rollout of a StatefulSet, when using a …

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  • Kubernetes 1.25: PodHasNetwork Condition for Pods

    By Deep Debroy (Apple) | Wednesday, September 14, 2022 in Blog

    Kubernetes 1.25 introduces Alpha support for a new kubelet-managed pod condition in the status field of a pod: PodHasNetwork. The kubelet, for a worker node, will use the PodHasNetwork condition to accurately surface the initialization state of a pod …

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  • Announcing the Auto-refreshing Official Kubernetes CVE Feed

    By Pushkar Joglekar (VMware) | Monday, September 12, 2022 in Blog

    A long-standing request from the Kubernetes community has been to have a programmatic way for end users to keep track of Kubernetes security issues (also called "CVEs", after the database that tracks public security issues across different …

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  • Kubernetes 1.25: KMS V2 Improvements

    By Anish Ramasekar, Rita Zhang, Mo Khan, Xander Grzywinski (Microsoft) | Friday, September 09, 2022 in Blog

    With Kubernetes v1.25, SIG Auth is introducing a new v2alpha1 version of the Key Management Service (KMS) API. There are a lot of improvements in the works, and we're excited to be able to start down the path of a new and improved KMS! What is KMS? …

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  • Kubernetes’s IPTables Chains Are Not API

    By Dan Winship (Red Hat) | Wednesday, September 07, 2022 in Blog

    Some Kubernetes components (such as kubelet and kube-proxy) create iptables chains and rules as part of their operation. These chains were never intended to be part of any Kubernetes API/ABI guarantees, but some external components nonetheless make …

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  • Introducing COSI: Object Storage Management using Kubernetes APIs

    By Sidhartha Mani (Minio, Inc) | Friday, September 02, 2022 in Blog

    This article introduces the Container Object Storage Interface (COSI), a standard for provisioning and consuming object storage in Kubernetes. It is an alpha feature in Kubernetes v1.25. File and block storage are treated as first class citizens in …

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  • Kubernetes 1.25: cgroup v2 graduates to GA

    By David Porter (Google), Mrunal Patel (Red Hat) | Wednesday, August 31, 2022 in Blog

    Kubernetes 1.25 brings cgroup v2 to GA (general availability), letting the kubelet use the latest container resource management capabilities. What are cgroups? Effective resource management is a critical aspect of Kubernetes. This involves managing …

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