Posts in 2023
Kubernetes 1.27: updates on speeding up Pod startup
Monday, May 15, 2023 in Blog
Authors: Paco Xu (DaoCloud), Sergey Kanzhelev (Google), Ruiwen Zhao (Google) How can Pod start-up be accelerated on nodes in large clusters? This is a common issue that cluster administrators may face. This blog post focuses on methods to speed up …
Kubernetes 1.27: In-place Resource Resize for Kubernetes Pods (alpha)
Friday, May 12, 2023 in Blog
Author: Vinay Kulkarni (Kubescaler Labs) If you have deployed Kubernetes pods with CPU and/or memory resources specified, you may have noticed that changing the resource values involves restarting the pod. This has been a disruptive operation for …
Kubernetes 1.27: Avoid Collisions Assigning Ports to NodePort Services
Thursday, May 11, 2023 in Blog
Author: Xu Zhenglun (Alibaba) In Kubernetes, a Service can be used to provide a unified traffic endpoint for applications running on a set of Pods. Clients can use the virtual IP address (or VIP) provided by the Service for access, and Kubernetes …
Kubernetes 1.27: Safer, More Performant Pruning in kubectl apply
Tuesday, May 09, 2023 in Blog
Authors: Katrina Verey (independent) and Justin Santa Barbara (Google) Declarative configuration management with the kubectl apply command is the gold standard approach to creating or modifying Kubernetes resources. However, one challenge it presents …
Kubernetes 1.27: Introducing An API For Volume Group Snapshots
Monday, May 08, 2023 in Blog
Author: Xing Yang (VMware) Volume group snapshot is introduced as an Alpha feature in Kubernetes v1.27. This feature introduces a Kubernetes API that allows users to take crash consistent snapshots for multiple volumes together. It uses a label …
Kubernetes 1.27: Quality-of-Service for Memory Resources (alpha)
Friday, May 05, 2023 in Blog
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 …
Kubernetes 1.27: StatefulSet PVC Auto-Deletion (beta)
Thursday, May 04, 2023 in Blog
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 …
Kubernetes 1.27: HorizontalPodAutoscaler ContainerResource type metric moves to beta
Tuesday, May 02, 2023 in Blog
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 …
Kubernetes 1.27: StatefulSet Start Ordinal Simplifies Migration
Friday, April 28, 2023 in Blog
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 …
Updates to the Auto-refreshing Official CVE Feed
Tuesday, April 25, 2023 in Blog
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 …