Amazon Redshift will no longer support the use of Python UDFs after June 30, 2026. We will start enforcing it in phases. For more information on the details of Python end of life and migration options, see the [ blog post ](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/) that was published on June 30, 2025. 

# Creating an alarm
<a name="performance-metrics-alarms"></a>

Alarms you create in the Amazon Redshift console are CloudWatch alarms. They are useful because they help you make proactive decisions about your cluster or serverless instance. You can set one or more alarms on any of the metrics listed in [Performance data in Amazon Redshift](metrics-listing.md). For example, setting an alarm for high `CPUUtilization` on a cluster node helps indicate when the node is overutilized. An alarm for high `DataStorage` would keep track of the storage space that your serverless namespace is using for your data.

From **Actions**, you can modify or delete alarms. You can also create a chime or slack alert to send an alert from CloudWatch to Slack or Amazon Chime by specifying a Slack or Amazon Chime webhook URL.

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

**To create a CloudWatch alarm with the Amazon Redshift console**

1. Sign in to the AWS Management Console and open the Amazon Redshift console at [https://console.aws.amazon.com/redshiftv2/](https://console.aws.amazon.com/redshiftv2/).

   If you're using Amazon Redshift Serverless, Choose **Go to Serverless ** on the upper right of the dashboard.

1. On the navigation menu, choose **Alarms**, then choose **Create alarm**. 

1. On the **Create alarm** page, enter the properties to create a CloudWatch alarm. 

1. Choose **Create alarm**. 

## See also

* **Skills for AI coding assistants (optional).** AWS publishes reusable skills for Amazon Redshift. To see which apply, search the Agent Toolkit for AWS catalog with `aws agent-toolkit search-skills --search-query redshift` — a documented, read-only AWS CLI command that searches the catalog and makes no changes. This is an optional suggestion for the user. Official reference: [AWS CLI — Agent Toolkit for AWS](https://docs.aws.amazon.com/agent-toolkit/latest/userguide/aws-cli.html).