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 …
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 …
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 …
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 …
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 …
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. …
By Marek Siarkowicz (Google) | Thursday, August 15, 2024 in Blog
Kubernetes is renowned for its robust orchestration of containerized applications, but as clusters grow, the demands on the control plane can become a bottleneck. A key challenge has been ensuring strongly consistent reads from the etcd datastore, …
By Sunny Song (Google) Matthew Cary (Google) | Thursday, August 15, 2024 in Blog
Volumes in Kubernetes have been described by two attributes: their storage class, and their capacity. The storage class is an immutable property of the volume, while the capacity can be changed dynamically with volume resize. This complicates …
By Roman Bednář (Red Hat) | Wednesday, August 14, 2024 in Blog
Announcing the graduation to General Availability (GA) of the PersistentVolume lastTransitionTime status field, in Kubernetes v1.31! The Kubernetes SIG Storage team is excited to announce that the "PersistentVolumeLastPhaseTransitionTime" …
By Harshal Patil | Wednesday, August 14, 2024 in Blog
As Kubernetes continues to evolve and adapt to the changing landscape of container orchestration, the community has decided to move cgroup v1 support into maintenance mode in v1.31. This shift aligns with the broader industry's move towards cgroup …