How to use volume gp3 in storage class on EKS?

Question

I'm converting volume gp2 to volume gp3 for EKS but getting this error.
Failed to provision volume with StorageClass "gp3": invalid AWS VolumeType "gp3"
This is my config.

StorageClass

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  annotations:
    storageclass.kubernetes.io/is-default-class: "true"
  name: gp3
parameters:
  fsType: ext4
  type: gp3
provisioner: kubernetes.io/aws-ebs
reclaimPolicy: Retain
allowVolumeExpansion: true
volumeBindingMode: WaitForFirstConsumer   

PVC

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  labels:
    app: test-pvc
  name: test-pvc
  namespace: default
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  storageClassName: gp3   

When I type kubectl describe pvc/test. This is response:

Name:          test-pvc
Namespace:     default
StorageClass:  gp3
Status:        Pending
Volume:        
Labels:        app=test-pvc
Annotations:   volume.beta.kubernetes.io/storage-provisioner: kubernetes.io/aws-ebs
Finalizers:    [kubernetes.io/pvc-protection]
Capacity:      
Access Modes:  
VolumeMode:    Filesystem
Used By:       <none>
Events:
  Type     Reason              Age                  From                         Message
  ----     ------              ----                 ----                         -------
  Warning  ProvisioningFailed  58s (x9 over 4m35s)  persistentvolume-controller  Failed to provision volume with StorageClass "gp3": invalid AWS VolumeType "gp3"   

I'm using Kubernetes version 1.18.
Can someone help me. Thanks!

Answer 1

I found the solution to use volume gp3 in storage class on EKS.

1. First, you need to install Amazon EBS CSI driver with offical instruction here.
2. The next, you need to create the storage class ebs-sc after Amazon EBS CSI driver is installed, example:

---

cat << EOF | kubectl apply -f -
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: ebs-sc
provisioner: ebs.csi.aws.com
parameters:
  type: gp3
reclaimPolicy: Retain
volumeBindingMode: WaitForFirstConsumer
EOF

So, you can use volume gp3 in storage class on EKS.
You can check by deploying resources:

cat << EOF | kubectl apply -f -
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: ebs-gp3-claim
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  storageClassName: ebs-sc
---
apiVersion: v1
kind: Pod
metadata:
  name: app-gp3-in-tree
spec:
  containers:
  - name: app
    image: nginx
    volumeMounts:
    - name: persistent-storage
      mountPath: /usr/share/nginx/html
  volumes:
  - name: persistent-storage
    persistentVolumeClaim:
      claimName: ebs-gp3-claim
EOF

Detailed documentation on Migrating Amazon EKS clusters from gp2 to gp3 EBS volumes: https://aws.amazon.com/vi/blogs/containers/migrating-amazon-eks-clusters-from-gp2-to-gp3-ebs-volumes/

References: Persistent Storage in EKS failing to provision volume