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Amazon Elastic File System
User Guide

Creating CloudWatch Alarms to Monitor Amazon EFS

You can create a CloudWatch alarm that sends an Amazon SNS message when the alarm changes state. An alarm watches a single metric over a time period you specify, and performs one or more actions based on the value of the metric relative to a given threshold over a number of time periods. The action is a notification sent to an Amazon SNS topic or Auto Scaling policy.

Alarms invoke actions for sustained state changes only. CloudWatch alarms will not invoke actions simply because they are in a particular state, the state must have changed and been maintained for a specified number of periods. The following procedures outlines how to create alarms for Amazon EFS.

Set alarms using the CloudWatch console

  1. Sign in to the AWS Management Console and open the CloudWatch console at https://console.aws.amazon.com/cloudwatch/.

  2. Choose Create Alarm. This launches the Create Alarm Wizard.

  3. Choose EFS Metrics and scroll through the Amazon EFS metrics to locate the metric you want to place an alarm on. To display just the Amazon EFS metrics in this dialog box, search on the file system id of your file system. Select the metric to create an alarm on and choose Next.

  4. Fill in the Name, Description, Whenever values for the metric.

  5. If you want CloudWatch to send you an email when the alarm state is reached, in the Whenever this alarm: field, choose State is ALARM. In the Send notification to: field, choose an existing SNS topic. If you select Create topic, you can set the name and email addresses for a new email subscription list. This list is saved and appears in the field for future alarms.

    Note

    If you use Create topic to create a new Amazon SNS topic, the email addresses must be verified before they receive notifications. Emails are only sent when the alarm enters an alarm state. If this alarm state change happens before the email addresses are verified, they do not receive a notification.

  6. At this point, the Alarm Preview area gives you a chance to preview the alarm you’re about to create. Choose Create Alarm.

To set an alarm using the AWS CLI

To set an alarm using the CloudWatch API