Authors: Dixita Narang (Google) Kubernetes v1.27, released in April 2023, introduced changes to Memory QoS (alpha) to improve memory management capabilites in Linux nodes. Support for Memory QoS was initially added in Kubernetes v1.22, and later some limitations around the formula for calculating memory.high were identified. These limitations are addressed in Kubernetes v1.27. Background Kubernetes […]
Author: Matthew Cary (Google) Kubernetes v1.27 graduated to beta a new policy mechanism for StatefulSets that controls the lifetime of their PersistentVolumeClaims (PVCs). The new PVC retention policy lets users specify if the PVCs generated from the StatefulSet spec template should be automatically deleted or retrained when the StatefulSet is deleted or replicas in the […]
Author: Kensei Nakada (Mercari) Kubernetes 1.20 introduced the ContainerResource type metric in HorizontalPodAutoscaler (HPA). In Kubernetes 1.27, this feature moves to beta and the corresponding feature gate (HPAContainerMetrics) gets enabled by default. What is the ContainerResource type metric The ContainerResource type metric allows us to configure the autoscaling based on resource usage of individual containers. […]
Author: Peter Schuurman (Google) Kubernetes v1.26 introduced a new, alpha-level feature for StatefulSets that controls the ordinal numbering of Pod replicas. As of Kubernetes v1.27, this feature is now beta. Ordinals can start from arbitrary non-negative numbers. This blog post will discuss how this feature can be used. Background StatefulSets ordinals provide sequential identities for […]
Authors: Cailyn Edwards (Shopify), Mahé Tardy (Isovalent), Pushkar Joglekar Since launching the Auto-refreshing Official CVE feed as an alpha feature in the 1.25 release, we have made significant improvements and updates. We are excited to announce the release of the beta version of the feed. This blog post will outline the feedback received, the changes […]