Specifying your Amazon SNS topic in the alert manager configuration file

Now, you can add your Amazon SNS receiver to your alert manager configuration. To do this, you must know the Amazon Resource Name (ARN) of your Amazon SNS topic.

For more information about Amazon SNS receiver configuration, see <sns_configs> in the Prometheus configuration documentation.

Unsupported properties

Amazon Managed Service for Prometheus supports Amazon SNS as the alert receiver. However, because of service constraints, not all of the properties of the Amazon SNS receiver are supported. The following properties are not allowed in an Amazon Managed Service for Prometheus alert manager configuration file:

• api_url: – Amazon Managed Service for Prometheus sets the api_url for you, so this property is not allowed.

• Http_config – This property allows you to set external proxies. Amazon Managed Service for Prometheus does not currently support this feature.

Additionally, SigV4 settings are required to have a Region property. Without the Region property, Amazon Managed Service for Prometheus doesn't have enough information to make the authorization request.

To configure alert manager with your Amazon SNS topic as the receiver

1. If you are using an existing alert manager configuration file, open it in a text editor.

2. If there are current receivers other than Amazon SNS in the receivers block, remove them. You can configure multiple Amazon SNS topics to be receivers by putting them in separate sns_config blocks within the receivers block.

3. Add the following YAML block within the receivers section.

   - name: name_of_receiver
     sns_configs:
       - sigv4:
           region: region
         topic_arn: ARN_of_SNS_topic
         subject: somesubject
         attributes:
           key: somekey
           value: somevalue

If a subjectis not specified, by default, a subject would be generated with the default template with the label name and values, which may result in a value that is too long for SNS. To change the template that is applied to the subject, refer to (Optional) Configuring alert manager to output JSON to Amazon SNS in this guide.

Now you must upload your alert manager configuration file to Amazon Managed Service for Prometheus. For more information, see Uploading your alert manager configuration file to Amazon Managed Service for Prometheus.