# Tutorial: Create a rule with an event pattern
<a name="event-pattern-batch-job"></a>

The following procedure covers how to create a rule with an event pattern.

**To create a rule that sends the event to a target when the event matches a defined pattern**
**Note**  
This procedure works for all AWS Batch on Amazon ECS, Amazon EKS, and AWS Fargate jobs.

1. Open the Amazon EventBridge console at [https://console.aws.amazon.com/events/](https://console.aws.amazon.com/events/).

1. From the navigation bar, select the AWS Region to use.

1. In the navigation pane, choose **Rules**.

1. Choose **Create rule**.

1. For **Name**, specify a unique name for your compute environment. The name can contain up to 64 characters. It can contain uppercase and lowercase letters, numbers, hyphens (-), and underscores (\$1).
**Note**  
A rule can't have the same name as another rule in the same Region and on the same event bus.

1. (Optional) For **Description**, enter a description for the rule.

1. For **Event bus**, choose the event bus that you want to associate with this rule. If you want this rule to match events that come from your account, select **default**. When an AWS service in your account emits an event, it always goes to your account's default event bus.

1. (Optional) Turn off the rule on the selected bus if you don't want to run the rule immediately.

1. For **Rule type**, choose **Rule with an event pattern**.

1. Choose** Next**.

1. For **Event Source**, choose **AWS event or EventBridge partner events**.

1. (Optional) For **Sample event**:

   1. For **Sample event type**, choose **AWS events**.

   1. For **Sample events**, choose **Batch Job State Change**.

1. For **Creation method**, choose **Use pattern form**.

1. For **Event pattern**:

   1. For **Event source**, choose **AWS services**.

   1. For **AWS service**, choose **Batch**.

   1. For **Event type**, choose **Batch Job State Change**.

1. Choose** Next**.

1. For **Target types**, choose **AWS service**.

1. For **Select a target**, choose a target type. For example, choose **Batch job queue**. Then specify the following:
   + **Job queue:** Enter the Amazon Resource Name (ARN) of the job queue to schedule your job in.
   + **Job definition:** Enter the name and revision or full ARN of the job definition to use for your job.
   + **Job name:** Enter a name for your job.
   + **Array size:** (Optional) Enter an array size for your job to run more than one copy. For more information, see [Array jobs](array_jobs.md).
   + **Job attempts:** (Optional) Enter the number of times to retry your job if it fails. For more information, see [Automated job retries](job_retries.md).

1. For **Batch job queue** target types, EventBridge needs permission to send events to the target. EventBridge can create the IAM role needed for your rule to run. Do one of the following:
   + To create an IAM role automatically, choose **Create a new role for this specific resource**.
   + To use an IAM role that you created before, choose **Use existing role**.

1. (Optional) Expand **Additional settings**.

   1. For **Configure target input**, choose how text from an event is processed.

   1. For **Maximum age of event**, specify the time interval for how long unprocessed events are kept.

   1. For **Retry attempts**, enter the number of times that an event is retried.

   1. For **Dead-letter queue,** choose an option for how unprocessed events are handled. If necessary, specify the Amazon SQS queue to use as the dead-letter queue.

1. (Optional) Choose **Add another target** to add an additional target.

1. Choose **Next**.

1. (Optional) For **Tags**, choose **Add new tag** to add a resource label. For more information, see [Amazon EventBridge tags](https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-tagging.html) in the *Amazon EventBridge User Guide*.

1. Choose **Next**.

1. For **Review and create**, review the configuration steps. If you need to make changes, choose **Edit**. After you're finished, choose **Create rule**.

   For more information about creating rules, see [Creating Amazon EventBridge rules that react to events](https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-create-rule-schedule.html) in the *Amazon EventBridge User Guide*.