Amazon Redshift
Cluster Management Guide

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Creating an Alarm

Alarms you create in the Amazon Redshift console are Amazon CloudWatch alarms. They are useful because they help you make proactive decisions about your cluster and its databases. You can set one or more alarms on any of the metrics listed in Amazon Redshift Performance Data. For example, setting an alarm for high CPUUtilization on a cluster node helps indicate when the node is overutilized. Likewise, setting an alarm for low CPUUtilization on a cluster node helps indicate when the node is underutilized.

In this section, you can find how to create an alarm using the Amazon Redshift console. You can create an alarm using the Amazon CloudWatch console or any other way you work with metrics, such as with the AWS CLI or an AWS SDK. To delete an alarm, you must use the Amazon CloudWatch console.

To create an alarm on a cluster metric in the Amazon Redshift console

  1. Sign in to the AWS Management Console and open the Amazon Redshift console at

  2. In the navigation pane, choose Clusters.

  3. For Cluster, choose the cluster for which you want to view cluster performance during query execution.

  4. Choose the Events+Alarms tab.

  5. Choose Create Alarm.

  6. In the Create Alarm dialog box, configure an alarm, and choose Create.


    The notifications that are displayed the Send a notification to box are your Amazon Simple Notification Service (Amazon SNS) topics. To learn more about Amazon SNS and creating topics, see Create a Topic in the Amazon Simple Notification Service Getting Started Guide. If you don't have any topics in Amazon SNS, you can create a topic in the Create Alarm dialog by clicking the create topic link.

    The details of your alarm vary with your circumstance. In the following example, the average CPU utilization of a node (Compute-0) has an alarm set. If the CPU goes above 80 percent for four consecutive five-minute periods, this alarm sends a notification to the topic redshift-example-cluster-alarms.

  7. In the list of alarms, find your new alarm.

    You might need to wait a few moments as sufficient data is collected to determine the state of the alarm as shown in the following example.

    After a few moments, the state should turn to OK.

  8. (Optional) Choose Name for the alarm to change the configuration of the alarm or choose the view link under More Options to go to this alarm in the Amazon CloudWatch console.