Kubernetes v1.29 Release and Plugin Flexibility

This chapter discusses the release of Kubernetes v1.29 and highlights the trend of moving vendor-specific functionalities out of the core and treating them as plugins. It explores the benefits of giving people options when using Kubernetes plugins and how individual vendors managing plugin release cycles can be more efficient. The chapter also touches on the in place resource changes feature and the concept of sidecar containers in Kubernetes.

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Episode notes

In this episode we interviewed Priyanka Saggu, Kubernetes v1.29 release lead and SIG ContribEx Tech Lead. We spoke about the release, the new features and enhancements, and more.

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Links from the interview

Kubernetes v1.29 release information page on k8s.dev

Removals, Deprecations, and Major Changes in Kubernetes 1.29

Release Blog - Kubernetes v1.29: Mandala

Breaking changes

KEP 2395: Removing In-Tree Cloud Providers (SIG Cloud Provider, Beta)

Kubernetes v1.28 on the Kubernetes Podcast from Google - discussion of removal of in-tree storage plug-ins

Major Changes

KEP 1287: In-Place Update of Pod Resources (SIG Node, Alpha)

Support in-place Pod vertical scaling in VPA

KEP 753: Sidecar Containers (SIG Node, Beta)

Stable

KEP 3299: KMS v2 Improvements OR KMSv2 (SIG Auth)

SIG Etcd on the Kubernetes Podcast from Google

KEP 2485: ReadWriteOncePod PersistentVolume Access Mode (SIG Storage, SIG Scheduling)
KEP 727: Kubelet Resource Metrics Endpoint (SIG Instrumentation)

“The Kubelet Summary API is a source of both Resource and Monitoring Metrics. Because of it’s dual purpose, it does a poor job of both.”

Beta

KEP 2799: Reduction of Secret-based Service Account Tokens (SIG Auth)

Alpha

KEP 3866: nftables kube-proxy backend (SIG Network)

[KCSNA 2023] Iptables the end of an era - Dan Winship, Antonio Ojea

Links from the post-interview chat

Kaslin’s blog about “Out of Tree” Kubernetes