Let’s see the steps to add EBS Volume to Ubuntu EC2 Instance. Bobcares, as a part of our AWS Support Services, offers solutions to every query that comes our way.

Adding EBS Volume to Ubuntu EC2 Instance

Amazon EBS is an easy-to-use, high-performance block storage at any scale. For a variety of apps, Amazon EBS offers a variety of volume types. It allows us to optimize storage performance and cost. These volume types can be divided into two main groups: HDD-backed storage and SSD-backed storage.

The price for HDD-backed storage is $0.045/GB-month. And the price for SSD-backed storage is $0.125/GB-month.

What is an Amazon EBS–optimized EC2 instance?

An EBS-optimized EC2 instance uses an optimized configuration stack. It also provides additional, dedicated capacity for Amazon EBS I/O. This optimization provides the best performance for the EBS volumes by minimizing contention between Amazon EBS I/O and other traffic from the instance.

EBS-optimized instances provide Amazon EBS with dedicated bandwidth. We can use the EBSIOBalance% and EBSByteBalance% metrics to help us determine whether the instances are sized correctly.

Steps to Add EBS Volume to Ubuntu EC2 Instance

Here we need to mount /var into a new partition.

1. Firstly create a new volume and leave the snapshot id empty.
2. Then we must name the new volume [var-vol].
3. Now attach the volume to an instance by right-clicking on volume/attach and choosing the EC2 instance.
4. We must now format the instance. We can use an ssh terminal for this purpose.

   mkfs.ext4 /dev/xvdv
5. Mount the volume to the file system.

   mkdir -m 000 /mnt/var.vol
   echo "/dev/xvdv /mnt/var.vol auto noatime 0 0" >> /etc/fstab
   mount /mnt/var.vol
6. Then we should stop all the possible processes.

   service --status-all |grep + to see what is running
7. Then sync /var to /mnt/var.vol using the below code.

   rsync -va /var/ /mnt/var.vol
8. Also, change the name from /var into /var.old.

   mv /var /var.old
9. Now create a new var directory.

   mkdir /var
10. Then bind-mount the new var.vol to the new-empty /var directory just created.

    mount -o bind /mnt/var.vol /var
11. Now update /etc/fstab to make bind-mount permanent.

    echo "/mnt/var.vol /var none bind" >> /etc/fstab
12. Finally, reboot the system to apply the changes.

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Conclusion

In this post, we provide the steps to add EBS VOLUME to the Ubuntu EC2 Instance, along with a detailed description of the EBS-optimized EC2 instance.