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EFS CSI Driver

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EFS CSI Driver

Overview

The EFS CSI driver provides persistent multi-az file storage for EKS pods.

Install EFS CSI Driver

helm repo add aws-efs-csi-driver https://kubernetes-sigs.github.io/aws-efs-csi-driver
helm repo update
 
helm install aws-efs-csi-driver aws-efs-csi-driver/aws-efs-csi-driver \
  --namespace kube-system

Create EFS File System

# Create security group for EFS
aws ec2 create-security-group \
  --group-name efs-sg \
  --description "EFS for EKS"
 
# Create EFS file system
aws efs create-file-system \
  --creation-token eks-storage \
  --tags Key=Name,Value=eks-efs

Create StorageClass

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: efs-sc
provisioner: efs.csi.aws.com
parameters:
  provisioningMode: efs-ap
  fileSystemId: fs-12345678
  directoryPerms: "700"
  gidRangeStart: "1000"
  gidRangeEnd: "2000"

Dynamic Provisioning

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: efs-claim
spec:
  accessModes:
    - ReadWriteMany
  storageClassName: efs-sc
  resources:
    requests:
      storage: 5Gi

Use in Pod

apiVersion: v1
kind: Pod
metadata:
  name: app-with-efs
spec:
  containers:
  - name: app
    image: nginx
    volumeMounts:
    - mountPath: /shared-data
      name: efs-volume
  volumes:
  - name: efs-volume
    persistentVolumeClaim:
      claimName: efs-claim

Access Points

apiVersion: v1
kind: PersistentVolume
metadata:
  name: efs-pv
spec:
  capacity:
    storage: 5Gi
  volumeMode: Filesystem
  accessModes:
    - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  storageClassName: efs-sc
  csi:
    driver: efs.csi.aws.com
    volumeHandle: fs-12345678
    volumeArn: arn:aws:efs:us-west-2:123456789:file-system/fs-12345678
    directoryPerms: "700"
    fsxDirPath: /my-access-point

References

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