What is Mutable PersistentVolume Node Affinity in Kubernetes v1.35 ?

It's an alpha feature making PV nodeAffinity editable post-creation, for syncing volume accessibility after backend changes like zonal-to-regional migrations.

How do I enable Mutable PV Node Affinity in Kubernetes?

Flip the MutablePVNodeAffinity feature gate on kube-apiserver. Edit PV spec.nodeAffinity — but update storage backend first, and monitor for races.

Is Kubernetes v1.35 Mutable PV Node Affinity safe for production?

No, it's alpha. Race conditions on tightening affinity can strand Pods. Test thoroughly; production waits for beta.

🏗️ DevOps & Infrastructure

Kubernetes 1.35 Cracks Open Mutable PV Node Affinity — A Stateful Revolution in Alpha

Imagine upgrading your cloud disk mid-flight, without crashing the plane. Kubernetes v1.35's mutable PV node affinity (alpha) finally lets admins tweak volume accessibility on the fly — but watch for those scheduler races.

Open Source Beat Apr 07, 2026 3 min read

Diagram of Kubernetes PersistentVolume with mutable node affinity rules updating from zonal to regional

⚡ Key Takeaways

Mutable PV node affinity in K8s 1.35 (alpha) enables live topology updates for evolving storage without data loss. 𝕏
Watch for scheduler races when tightening affinity; kubelet fixes incoming. 𝕏
Future CSI integration promises automated syncs via PVC edits, reducing admin toil. 𝕏

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Open Source Beat

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#CSI Storage #Kubernetes v1.35 #Node Affinity #PersistentVolume #PersistentVolumes #Storage Management #kubernetes #v1.35

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Originally reported by Kubernetes Blog

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