Day 12.Attach Volume to EC2 Instance

Source: Dev.to

Lab Information

The Nautilus DevOps team is creating services on AWS and breaking the migration into smaller tasks for better control, risk mitigation, and resource optimization.

An instance named devops-ec2 and a volume named devops-volume already exist in the us-east-1 region. Attach the devops-volume to the devops-ec2 instance, setting the device name to /dev/sdb.

Lab Solutions

Step‑By‑Step Instructions (AWS Console)

• Log in
  Use the provided console URL and credentials. Confirm the region is us-east-1.

• Check Volume Availability

  1. Open the EC2 service.
  2. In the left panel, click Volumes (under “Elastic Block Store”).
  3. Find devops-volume.
  4. Ensure its state is available and note its Availability Zone (AZ).
  5. The EC2 instance must be in the same AZ as the volume.

  

• Check the Instance

  1. Go to Instances.
  2. Locate devops-ec2.
  3. Verify it is in the same Availability Zone as the volume.
  4. The instance can be running; attaching works for both stopped and running states.

  

• Attach the Volume

  1. Return to Volumes.
  2. Select devops-volume.
  3. Click Actions → Attach volume.
  4. In the popup:
     • Instance: choose devops-ec2
     • Device name: enter /dev/sdb
  5. Click Attach volume.

  

• Verify Attachment
  After attaching:

  • Volume state should change to in‑use.
  • Under Attachment information, you should see:
    • Instance ID: devops-ec2
    • Device: /dev/sdb

  

  On the EC2 devops-ec2 instance page:

  • Open the Storage tab.
  • You should now see an additional block device listed as /dev/sdb.