Posts in 2024
Kubernetes v1.31: kubeadm v1beta4
By Paco Xu (DaoCloud) | Friday, August 23, 2024 in Blog
As part of the Kubernetes v1.31 release, kubeadm is adopting a new (v1beta4) version of its configuration file format. Configuration in the previous v1beta3 format is now formally deprecated, which means it's supported but you should migrate to …
Kubernetes v1.31: New Kubernetes CPUManager Static Policy: Distribute CPUs Across Cores
By Jiaxin Shan (Bytedance) | Thursday, August 22, 2024 in Blog
In Kubernetes v1.31, we are excited to introduce a significant enhancement to CPU management capabilities: the distribute-cpus-across-cores option for the CPUManager static policy. This feature is currently in alpha and hidden by default, marking a …
Kubernetes 1.31: Fine-grained SupplementalGroups control
By Shingo Omura (Woven By Toyota) | Thursday, August 22, 2024 in Blog
This blog discusses a new feature in Kubernetes 1.31 to improve the handling of supplementary groups in containers within Pods. Motivation: Implicit group memberships defined in /etc/group in the container image Although this behavior may not be …
Kubernetes 1.31: Custom Profiling in Kubectl Debug Graduates to Beta
By Arda Güçlü (Red Hat) | Thursday, August 22, 2024 in Blog
There are many ways of troubleshooting the pods and nodes in the cluster. However, kubectl debug is one of the easiest, highly used and most prominent ones. It provides a set of static profiles and each profile serves for a different kind of role. …
Kubernetes 1.31: Autoconfiguration For Node Cgroup Driver (beta)
By Peter Hunt (Red Hat) | Wednesday, August 21, 2024 in Blog
Historically, configuring the correct cgroup driver has been a pain point for users running new Kubernetes clusters. On Linux systems, there are two different cgroup drivers: cgroupfs and systemd. In the past, both the kubelet and CRI implementation …
Kubernetes 1.31: Streaming Transitions from SPDY to WebSockets
By Sean Sullivan (Google) Shannon Kularathna (Google) | Tuesday, August 20, 2024 in Blog
In Kubernetes 1.31, by default kubectl now uses the WebSocket protocol instead of SPDY for streaming. This post describes what these changes mean for you and why these streaming APIs matter. Streaming APIs in Kubernetes In Kubernetes, specific …
Kubernetes 1.31: Pod Failure Policy for Jobs Goes GA
By Michał Woźniak (Google), Shannon Kularathna (Google) | Monday, August 19, 2024 in Blog
This post describes Pod failure policy, which graduates to stable in Kubernetes 1.31, and how to use it in your Jobs. About Pod failure policy When you run workloads on Kubernetes, Pods might fail for a variety of reasons. Ideally, workloads like …
Kubernetes 1.31: Read Only Volumes Based On OCI Artifacts (alpha)
By Sascha Grunert | Friday, August 16, 2024 in Blog
The Kubernetes community is moving towards fulfilling more Artificial Intelligence (AI) and Machine Learning (ML) use cases in the future. While the project has been designed to fulfill microservice architectures in the past, it’s now time to listen …
Kubernetes 1.31: Prevent PersistentVolume Leaks When Deleting out of Order
By Deepak Kinni (Broadcom) | Friday, August 16, 2024 in Blog
PersistentVolume (or PVs for short) are associated with Reclaim Policy. The reclaim policy is used to determine the actions that need to be taken by the storage backend on deletion of the PVC Bound to a PV. When the reclaim policy is Delete, the …
Kubernetes 1.31: MatchLabelKeys in PodAffinity graduates to beta
By Kensei Nakada (Tetrate) | Friday, August 16, 2024 in Blog
Kubernetes 1.29 introduced new fields matchLabelKeys and mismatchLabelKeys in podAffinity and podAntiAffinity. In Kubernetes 1.31, this feature moves to beta and the corresponding feature gate (MatchLabelKeysInPodAffinity) gets enabled by default. …