[Monitoring, Reporting, and Automation] A company needs to monitor the disk utilization of Amazon Elastic Block Store (Amazon EBS) volumes The EBS…

Create an IAM role with the CloudWatchAgentServerPolicy:

This policy grants the necessary permissions for the CloudWatch agent to collect and send metrics.

Steps:

Go to the AWS Management Console.

Navigate to IAM and create a new role.

Choose "EC2" as the trusted entity.

Attach the "CloudWatchAgentServerPolicy" managed policy to the role.

Attach this IAM role to your EC2 instances.

AWS IAM Roles

Install and start the CloudWatch agent:

The CloudWatch agent must be installed and configured to collect disk utilization metrics.

Steps:

Use AWS Systems Manager or SSH to connect to your instances.

Install the CloudWatch agent using the following commands:

sudo yum install amazon-cloudwatch-agent

sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-config-wizard

sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -

c file:/path/to/your-config-file.json -s

Start the agent:

sudo systemctl start amazon-cloudwatch-agent

Configure a CloudWatch alarm:

Create an alarm based on the disk_used_percent metric.

Steps:

Go to the AWS Management Console.

Navigate to CloudWatch and select "Alarms" from the left-hand menu.

Click on "Create alarm."

Select the disk_used_percent metric.

Set the threshold to 80% and configure the alarm actions (e.g., sending a notification).

Reference: Creating a CloudWatch Alarm