Rule: EC2 Instance EBS Optimization Enabled
This rule ensures that EC2 instances have EBS optimization enabled for improved performance.
| Rule | EC2 instance should have EBS optimization enabled |
| Framework | NIST 800-53 Revision 5 |
| Severity | ✔ High |
Rule Description:
EC2 instances should have Elastic Block Store (EBS) optimization enabled to comply with NIST 800-53 Revision 5.
EBS optimization is a feature provided by Amazon Web Services (AWS) that delivers dedicated network capacity to the attached EBS volumes of an EC2 instance. Enabling EBS optimization ensures that the communication between the EC2 instance and its EBS volumes is optimized for better performance and throughput.
Remediation:
To enable EBS optimization for an EC2 instance, follow the steps below:
- 1.Identify the EC2 instance for which you want to enable EBS optimization.
- 2.Log in to the AWS Management Console.
- 3.Go to the EC2 Dashboard.
- 4.Select the appropriate region if not already selected.
- 5.Click on "Instances" in the sidebar.
- 6.Locate the EC2 instance in the list and select it.
- 7.Click on "Actions" in the top menu.
- 8.From the dropdown menu, choose "Modify Instance".
- 9.In the "Modify Instance" window, scroll down to the "EBS optimization" section.
- 10.Check the box next to "Enable" to enable EBS optimization for the instance.
- 11.Review any additional settings you may want to modify for the instance.
- 12.Click on "Save" to apply the changes.
- 13.Wait for the changes to take effect. This may take a few minutes.
Troubleshooting:
If you encounter any issues or errors while enabling EBS optimization, consider the following troubleshooting steps:
- 1.Verify IAM permissions: Ensure that you have the necessary permissions to modify EC2 instances.
- 2.Check instance type compatibility: EBS optimization may not be available for all instance types. Make sure that your chosen instance type supports EBS optimization.
- 3.Check region compatibility: EBS optimization may not be available in all AWS regions. Confirm that the region in which your instance resides supports EBS optimization.
- 4.Instance restart required: In some cases, enabling EBS optimization may require a restart of the instance. If the changes are not applied immediately, try stopping and starting the instance.
- 5.Review CloudTrail logs: If you have CloudTrail enabled, check the logs for any relevant errors or events related to the EBS optimization configuration.
If the issue persists, consider reaching out to AWS support for further assistance.
Additional Information:
You can also enable EBS optimization programmatically using AWS CLI. Here's an example command:
aws ec2 modify-instance-attribute --instance-id <instance-id> --ebs-optimized --ebs-optimized true
Replace
<instance-id>Note: Before making any changes to your EC2 instances, it is recommended to review and understand the impact of the changes and also consider any additional requirements specific to your environment or application.