What happens to EFS based PVs when a node crashes?

Question

I have some applications which uses dynamically provisioned PVs with EFS (EFS CSI dynamic provisioning). I have an EKS cluster with managed node groups in different AZs. My question: what happens to these PVs when a node crashes for some reason and the pods are restarted on other nodes? Will EKS or k8s automatically remount these EFS based PVs to the proper pods?

Answer

In this scenario, what happens to the associated PersistentVolume depends on the Reclaim Policy of the associated PersistentVolumeClaim. This can be modified and I recommend you read this Kubernetes documentation page: https://kubernetes.io/docs/tasks/administer-cluster/change-pv-reclaim-policy/#changing-the-reclaim-policy-of-a-persistentvolume

What happens to EFS based PVs when a node crashes?

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