In a previous blog, we saw, the importance of persistence storage. AWS Provides EBS Volumes that help us achieve the same. Let's talk more about EBS.

• EBS provides block-level storage volumes for use with EC2 & Containers.

• These are the portable volumes, that we can directly mount volumes as devices in our EC2 or container instance .

• These volumes are independent of EC2 or Containers life cycles. i.e if EC2 or container crashes. we have stored data available in volume .

• Another good thing about EBS volume is we can increase or decrease its configuration dynamically.

Installing EBS CSI Driver

CSI Driver provides a way for the Kubernetes cluster to access the EBS volume. For that, We have to install the CSI driver to our cluster.

Firstly, we have to create IAM policy for EBS.

(1) Create IAM policy for EBS.

• Go to IAM dashboard, Click on create policy and select JSON tab.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "ec2:AttachVolume",
        "ec2:CreateSnapshot",
        "ec2:CreateTags",
        "ec2:CreateVolume",
        "ec2:DeleteSnapshot",
        "ec2:DeleteTags",
        "ec2:DeleteVolume",
        "ec2:DescribeInstances",
        "ec2:DescribeSnapshots",
        "ec2:DescribeTags",
        "ec2:DescribeVolumes",
        "ec2:DetachVolume"
      ],
      "Resource": "*"
    }
  ]
}

Name : EBS_CSI_Driver_for_EKS

• Click on Create Policy.

(2) Associate created the policy for Worker Node's IAM Role.

• You can find associated IAM role either from EKS Dashboard or using the command line kubectl -n kube-system describe configmap aws-auth

• Go to IAM -> Role -> select role with worker node IAM role name . -> Click on attach policy and attach the policy name EBS_CSI_Driver_for_EKS .

(3) Deploy EBS CSI Driver.

kubectl apply -k "github.com/kubernetes-sigs/aws-ebs-csi-driver/deploy/kubernetes/overlays/stable/?ref=master"

# Verify csi pods created
kubectl get pods -n kube-system

In upcoming blog will make use of these created EBS volumes.

Made with ♥ by Pratikkumar Panchal