Setting up notifications or trigger actions based on Parameter Store events - AWS Systems Manager

Setting up notifications or trigger actions based on Parameter Store events

The topics in this section explain how to use Amazon EventBridge and Amazon Simple Notification Service (Amazon SNS) to notify you about changes to AWS Systems Manager parameters. You can create an EventBridge rule to notify you when a parameter or a parameter label version is created, updated, or deleted. Events are emitted on a best effort basis. You can be notified about changes or status related to parameter policies, such as when a parameter expires, is going to expire, or hasn't changed for a specified period of time.


Parameter policies are available for parameters that use the advanced parameters tier. Charges apply. For more information, see Assigning parameter policies and Managing parameter tiers.

The topics in this section also explain how to initiate other actions on a target for specific parameter events. For example, you can run an AWS Lambda function to recreate a parameter automatically when it expires or is deleted. You can set up a notification to invoke a Lambda function when your database password is updated. The Lambda function can force your database connections to reset or reconnect with the new password. EventBridge also supports running Run Command commands and Automation executions, and actions in many other AWS services. Run Command and Automation are both capabilities of AWS Systems Manager. For more information, see the Amazon EventBridge User Guide.

Before You Begin

Create any resources you need to specify the target action for the rule you create. For example, if the rule you create is for sending a notification, first create an Amazon SNS topic. For more information, see Getting started with Amazon SNS in the Amazon Simple Notification Service Developer Guide.

Configuring EventBridge rules for parameters and parameter policies

This topic explains the following:

  • How to create an EventBridge rule that invokes a target based on events that happen to one or more parameters in your AWS account.

  • How to create EventBridge rules that invoke targets based on events that happen to one or more parameter policies in your AWS account. When you create an advanced parameter, you specify when a parameter expires, when to receive notification before a parameter expires, and how long to wait before notification should be sent that a parameter hasn't changed. You set up notification for these events using the following procedure. For more information, see Assigning parameter policies and Managing parameter tiers.

To configure an EventBridge rule for a Systems Manager parameter or parameter policy
  1. Open the Amazon EventBridge console at

  2. In the navigation pane, choose Rules, and then choose Create rule.


    If the EventBridge home page opens first, choose Create rule.

  3. Enter a name and description for the rule.

    A rule can't have the same name as another rule in the same Region and on the same event bus.

  4. For Event bus, choose the event bus that you want to associate with this rule. If you want this rule to initiate on matching events that come from your own AWS account, select default . When an AWS service in your account emits an event, it always goes to your account’s default event bus.

  5. For Rule type, leave the default Rule with an event pattern selected.

  6. Choose Next.

  7. For Event source, leave the default AWS events or EventBridge partner events selected. You can skip the Sample event section.

  8. For Event pattern, do the following:

    • Choose Custom patterns (JSON editor).

    • For Event pattern, paste one of the following content in the box, depending on whether you are creating a rule for a parameter or a parameter policy:

      { "source": [ "aws.ssm" ], "detail-type": [ "Parameter Store Change" ], "detail": { "name": [ "parameter-1-name", "/parameter-2-name/level-2", "/parameter-3-name/level-2/level-3" ], "operation": [ "Create", "Update", "Delete", "LabelParameterVersion" ] } }
      Parameter policy
      { "source": [ "aws.ssm" ], "detail-type": [ "Parameter Store Policy Action" ], "detail": { "parameter-name": [ "parameter-1-name", "/parameter-2-name/level-2", "/parameter-3-name/level-2/level-3" ], "policy-type": [ "Expiration", "ExpirationNotification", "NoChangeNotification" ] } }
    • Modify the contents for the parameters and the operations you want to act on, as shown in the following samples.


      With this example, an action is taken when either of the parameters named /Oncall and /Project/Teamlead are updated:

      { "source": [ "aws.ssm" ], "detail-type": [ "Parameter Store Change" ], "detail": { "name": [ "/Oncall", "/Project/Teamlead" ], "operation": [ "Update" ] } }
      Parameter policy

      With this example, an action is taken whenever the parameter named /OncallDuties expires and is deleted:

      { "source": [ "aws.ssm" ], "detail-type": [ "Parameter Store Policy Action" ], "detail": { "parameter-name": [ "/OncallDuties" ], "policy-type": [ "Expiration" ] } }
  9. Choose Next.

  10. For Target 1, choose a target type and a supported resource. For example, if you choose SNS topic, make a selection for Topic. If you choose CodePipeline, enter a pipeline ARN for Pipeline ARN. Provide additional configuration values as required.


    Choose Add another target if you require additional targets for the rule.

  11. Choose Next.

  12. (Optional) Enter one or more tags for the rule. For more information, see Amazon EventBridge tags in the Amazon EventBridge User Guide.

  13. Choose Next.

  14. Choose Create rule.