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Kubernetes 1.35 Timbernetes Deep Dive: Breaking Changes, In-Place Resize GA, Gang Scheduling
Kubernetes 1.35 "Timbernetes" dropped on December 17, 2025, fundamentally changing how we operate clusters. This deep dive covers the 60 enhancements, 3 breaking changes that will bite you if unprepared, and in-place pod resize graduating to GA after six years of development.
What You'll Learn:
• Breaking Changes: cgroup v1 REMOVED (not deprecated), containerd 1.x EOL, IPVS deprecated
• In-Place Pod Resize GA: Resize CPU/memory without pod restart - 6 years from KEP to stable
• Pod Certificates Beta: Native kubelet-managed mTLS for zero-trust pod-to-pod auth
• Gang Scheduling Alpha: Native all-or-nothing scheduling for AI/ML distributed training
• Alpha Features: Node Declared Features, Partitionable Devices, Extended Toleration Operators
• Practical Upgrade Checklist: What to audit and test before upgrading
Resources:
• Episode page: https://platformengineering.org/podcasts/00065-kubernetes-1-35-timbernetes-deep-dive
• Kubernetes 1.35 Release Blog: https://kubernetes.io/blog/2025/12/17/kubernetes-v1-35-release/
• KEP-1287 In-Place Resize: https://github.com/kubernetes/enhancements/issues/1287
• KEP-4317 Pod Certificates: https://github.com/kubernetes/enhancements/issues/4317
#Kubernetes #K8s #PlatformEngineering #DevOps #CloudNative #Timbernetes #ContainerOrchestration #InPlaceResize #GangScheduling #AI #ML
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By vibesreKubernetes 1.35 "Timbernetes" dropped on December 17, 2025, fundamentally changing how we operate clusters. This deep dive covers the 60 enhancements, 3 breaking changes that will bite you if unprepared, and in-place pod resize graduating to GA after six years of development.
What You'll Learn:
• Breaking Changes: cgroup v1 REMOVED (not deprecated), containerd 1.x EOL, IPVS deprecated
• In-Place Pod Resize GA: Resize CPU/memory without pod restart - 6 years from KEP to stable
• Pod Certificates Beta: Native kubelet-managed mTLS for zero-trust pod-to-pod auth
• Gang Scheduling Alpha: Native all-or-nothing scheduling for AI/ML distributed training
• Alpha Features: Node Declared Features, Partitionable Devices, Extended Toleration Operators
• Practical Upgrade Checklist: What to audit and test before upgrading
Resources:
• Episode page: https://platformengineering.org/podcasts/00065-kubernetes-1-35-timbernetes-deep-dive
• Kubernetes 1.35 Release Blog: https://kubernetes.io/blog/2025/12/17/kubernetes-v1-35-release/
• KEP-1287 In-Place Resize: https://github.com/kubernetes/enhancements/issues/1287
• KEP-4317 Pod Certificates: https://github.com/kubernetes/enhancements/issues/4317
#Kubernetes #K8s #PlatformEngineering #DevOps #CloudNative #Timbernetes #ContainerOrchestration #InPlaceResize #GangScheduling #AI #ML