How to Mount Amazon EFS on EC2 Ubuntu 22.04 Instance

Amazon Elastic File System (EFS) is a scalable, cloud-based file storage service for use with Amazon EC2 instances. It’s highly available and durable, making it ideal for various applications and workloads. In this guide, we’ll walk you through the steps on how to mount Amazon EFS on an EC2 Ubuntu 22.04 instance.

What to do

  1. Update Package Repository
  2. Install NFS Client
  3. Create Amazon EFS File System
  4. Associate Security Group
  5. Mount Amazon EFS
  6. Configure Auto-Mounting
  7. Test Mounting


Make sure your EC2 instance has an IAM role with the necessary permissions to access EFS.

Step 1: Install NFS Client

To mount your EFS file system, you must first install the NFS client package on your Ubuntu server. This package provides a set of utilities for simplifying the mounting and using of EFS file systems.

sudo apt-get update
sudo apt-get -y install nfs-common

Step 2: Create a Custom Security Group

Before mounting, create your custom Security Group and set up NFS traffic to allow from your own security group ID:

How to Mount Amazon EFS on EC2 Ubuntu 22.04 Instance

Step 3: Update EFS File System Network Configuration

Update your EFS file system’s network configuration and replace the security group with the custom security group you created, which allows NFS traffic from its own Security Group ID:

How to Mount Amazon EFS on EC2 Ubuntu 22.04 Instance

Step 4: Update EC2 Instance Security Group

Attached the new custom security group we created to your EC2 instance, which allows to your EFS file system traffic.

How to Mount Amazon EFS on EC2 Ubuntu 22.04 Instance

Step 5: Find Your EFS File System ID

Locate your EFS file system ID and copy the DNS name from the AWS Management Console under the EFS section.

How to Mount Amazon EFS on EC2 Ubuntu 22.04 Instance

Step 6: Create a Mount Point

Back to you EC2 instance terminal, create a directory where you would like to mount your EFS filesystem. If the directory does not exist, you can create it:

sudo mkdir /home/ubuntu/efs

Replace /home/ubuntu/efs with your own specific directory.

Step 7: Mounting the File System

Mount the EFS file system to the directory you created:

sudo mount -t nfs4 -o  nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport /home/ubuntu/efs

Replace fs-xxxxxx with your actual EFS file system ID.

Expected Output After Mounting EC2 with EFS:

How to Mount Amazon EFS on EC2 Ubuntu 22.04 Instance

Step 8: Automatically Mount EFS on Boot

To ensure the EFS file system is automatically mounted on boot, add it to the /etc/fstab file. Open the file with your favorite editor:

sudo nano /etc/fstab

Add the following line to /etc/fstab, again replacing fs-xxxxxx with your file system ID: /home/ubuntu/efs nfs4 nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport,_netdev 0 0

Here’s what each option means:

  • nfsvers=4.1: Use NFS version 4.1.
  • rsize=1048576: Set the read size to 1MB.
  • wsize=1048576: Set the write size to 1MB.
  • hard: Use hard mount options.
  • timeo=600: The time in deciseconds (tenths of a second) the NFS client will retry a request.
  • retrans=2: The number of times the NFS client will retry a request before it attempts further recovery actions.
  • noresvport: Tell NFS not to use reserved ports.
  • _netdev: This option ensures that the network is up before trying to mount the filesystem.
  • 0 0: These are the dump and fsck options respectively. Setting them to 0 disables them for this mount.

Save and exit the editor.

Step 9: Test the mount command

Before rebooting, it’s a good idea to test that the entry works, manually type the mount command using:

sudo mount -a

This command will attempt to mount all filesystems mentioned in /etc/fstab.

Step 10: Verify the mount

Check that the EFS has been mounted successfully by running:

df -hT

You should see your EFS listed in the output:

How to Mount Amazon EFS on EC2 Ubuntu 22.04 Instance

Final Step: Testing the Mount

After mounting, test that you can write to the EFS:

echo "Hello EFS" | sudo tee /home/ubuntu/efs/testfile.txt
cat /home/ubuntu/efs/testfile.txt

Monitoring and Troubleshooting

Monitoring with CloudWatch

Amazon EFS integrates with Amazon CloudWatch to monitor the file system’s performance. You can navigate to the CloudWatch console to review metrics and set alarms for your EFS system.

Handling Limits

Be aware of Amazon EFS limits to ensure you operate within the service’s thresholds for optimal performance.


Consult the Amazon EFS Troubleshooting Guide for common issues and resolutions if you encounter any errors.


Mounting Amazon EFS on an Ubuntu EC2 instance is straightforward with amazon-efs-utils. By following the steps provided in this guide, you can quickly set up a resilient and scalable file storage system for your cloud applications. Remember to always monitor and manage your EFS to adhere to AWS best practices and avoid potential pitfalls.

For further insights how Amazon EFS works, visit:

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