I have a 2 node K8S cluster deployed on EC2 instances. I used RKE to deploy the cluster (not kube-up), and I'm trying to use an AWS EB Volume as K8S Persistent volume. Created volume and instances are in the same region (us-east-2).

I configured k8s user to access aws through CLI and even exported specific AWS variables: AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY

When I try to create the PV ( kubectl create -f aws-persistent-volume.yml )I always get:

Error from server (Forbidden): error when creating "aws-persistent-volume.yml": persistentvolumes "minio-volume" is forbidden: error querying AWS EBS volume vol-xxx: error finding instance i-xxx: "error listing AWS instances: \"NoCredentialProviders: no valid providers in chain. Deprecated. \\n\\tFor verbose messaging see aws.Config.CredentialsChainVerboseErrors\""

My PV YML file is the following:

kind: PersistentVolume
apiVersion: v1
metadata:
  name: minio-volume
  labels:
    type: local
spec:
  storageClassName: manual
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteOnce
  awsElasticBlockStore:
    volumeID: vol-xxx
    fsType: ext4

Listing volumes (aws --region us-east-2 ec2 describe-volumes --volume-id vol-xxx) gives no problems:

{
    "Volumes": [
        {
            "AvailabilityZone": "us-east-2a",
            "Attachments": [],
            "Encrypted": false,
            "VolumeType": "gp2",
            "VolumeId": "vol-xxx",
            "State": "available",
            "Iops": 100,
            "SnapshotId": "",
            "CreateTime": "2018-04-23T14:17:22.563Z",
            "Size": 10
        }
    ]
}

Additional informations: OS Centos 7, Kubernetes v1.8.3

Any help? Thanks in advance.