Posts in 2021
Minimum Ready Seconds for StatefulSets
By Ravi Gudimetla (Red Hat), Maciej Szulik (Red Hat) | Friday, August 27, 2021 in Blog
This blog describes the notion of Availability for StatefulSet workloads, and a new alpha feature in Kubernetes 1.22 which adds minReadySeconds configuration for StatefulSets. What problems does this solve? Prior to Kubernetes 1.22 release, once a …
Enable seccomp for all workloads with a new v1.22 alpha feature
By Sascha Grunert (Red Hat) | Wednesday, August 25, 2021 in Blog
This blog post is about a new Kubernetes feature introduced in v1.22, which adds an additional security layer on top of the existing seccomp support. Seccomp is a security mechanism for Linux processes to filter system calls (syscalls) based on a set …
Alpha in v1.22: Windows HostProcess Containers
By Brandon Smith (Microsoft) | Monday, August 16, 2021 in Blog
Kubernetes v1.22 introduced a new alpha feature for clusters that include Windows nodes: HostProcess containers. HostProcess containers aim to extend the Windows container model to enable a wider range of Kubernetes cluster management scenarios. …
Kubernetes Memory Manager moves to beta
By Artyom Lukianov (Red Hat), Cezary Zukowski (Samsung) | Wednesday, August 11, 2021 in Blog
The blog post explains some of the internals of the Memory manager, a beta feature of Kubernetes 1.22. In Kubernetes, the Memory Manager is a kubelet subcomponent. The memory manage provides guaranteed memory (and hugepages) allocation for pods in …
New in Kubernetes v1.22: alpha support for using swap memory
By Elana Hashman (Red Hat) | Monday, August 09, 2021 in Blog
The 1.22 release introduced alpha support for configuring swap memory usage for Kubernetes workloads on a per-node basis. In prior releases, Kubernetes did not support the use of swap memory on Linux, as it is difficult to provide guarantees and …
Kubernetes 1.22: CSI Windows Support (with CSI Proxy) reaches GA
By Mauricio Poppe (Google), Jing Xu (Google), Deep Debroy (Apple) | Monday, August 09, 2021 in Blog
The stable version of CSI Proxy for Windows has been released alongside Kubernetes 1.22. CSI Proxy enables CSI Drivers running on Windows nodes to perform privileged storage operations. Background Container Storage Interface (CSI) for Kubernetes went …
Kubernetes 1.22: Server Side Apply moves to GA
By Jeffrey Ying (Google) Joe Betz (Google) | Friday, August 06, 2021 in Blog
Server-side Apply (SSA) has been promoted to GA in the Kubernetes v1.22 release. The GA milestone means you can depend on the feature and its API, without fear of future backwards-incompatible changes. GA features are protected by the Kubernetes …
Kubernetes 1.22: Reaching New Peaks
By Kubernetes 1.22 Release Team | Wednesday, August 04, 2021 in Blog
We’re pleased to announce the release of Kubernetes 1.22, the second release of 2021! This release consists of 53 enhancements: 13 enhancements have graduated to stable, 24 enhancements are moving to beta, and 16 enhancements are entering alpha. …
Roorkee robots, releases and racing: the Kubernetes 1.21 release interview
By Craig Box (Google) | Thursday, July 29, 2021 in Blog
With Kubernetes 1.22 due out next week, now is a great time to look back on 1.21. The release team for that version was led by Nabarun Pal from VMware. Back in April I interviewed Nabarun on the weekly Kubernetes Podcast from Google; the latest in a …
Updating NGINX-Ingress to use the stable Ingress API
By James Strong, Ricardo Katz | Monday, July 26, 2021 in Blog
With all Kubernetes APIs, there is a process to creating, maintaining, and ultimately deprecating them once they become GA. The networking.k8s.io API group is no different. The upcoming Kubernetes 1.22 release will remove several deprecated APIs that …