# Monitoring Amazon Config with Amazon EventBridge
Amazon EventBridge delivers a near real-time stream of system events that describe changes in Amazon resources. Use Amazon EventBridge to detect and react to changes in the status of Amazon Config events.
You can create a rule that runs whenever there is a state transition, or when there is a transition to one or more states that are of interest. Then, based on rules you create, Amazon EventBridge invokes one or more target actions when an event matches the values you specify in a rule. Depending on the type of event, you might want to send notifications, capture event information, take corrective action, initiate events, or take other actions.
Before you create event rules for Amazon Config, however, you should do the following:
+ Familiarize yourself with events, rules, and targets in EventBridge. For more information, see [What Is Amazon EventBridge?](https://docs.amazonaws.cn/eventbridge/latest/userguide/eb-what-is.html)
+ For more information about how to get started with EventBridge and set up rules, see [Getting started with Amazon EventBridge](https://docs.amazonaws.cn/eventbridge/latest/userguide/eb-get-started.html).
+ Create the target or targets you will use in your event rules.
**Topics**
+ [Considerations](#monitor-config-with-cloudwatchevents-considerations)
+ [Amazon EventBridge format for Amazon Config](#cloudwatch-event-format-for-awsconfig)
+ [Creating Amazon EventBridge Rule for Amazon Config](#create-cloudwatch-events-rule-for-awsconfig)
## Considerations
You will not receive alerts through EventBridge for the following resource types if you are not recording them with Amazon Config:
+ `AWS::ACM::Certificate`
+ `AWS::CloudTrail::Trail`
+ `AWS::CloudWatch::Alarm`
+ `AWS::EC2::CustomerGateway`
+ `AWS::EC2::EIP`
+ `AWS::EC2::Host`
+ `AWS::EC2::Instance`
+ `AWS::EC2::InternetGateway`
+ `AWS::EC2::NetworkAcl`
+ `AWS::EC2::NetworkInterface`
+ `AWS::EC2::RouteTable`
+ `AWS::EC2::SecurityGroup`
+ `AWS::EC2::Subnet`
+ `AWS::EC2::VPC`
+ `AWS::EC2::VPNConnection`
+ `AWS::EC2::VPNGateway`
+ `AWS::EC2::Volume`
+ `AWS::ElasticLoadBalancingV2::LoadBalancer`
+ `AWS::IAM::Group`
+ `AWS::IAM::Policy`
+ `AWS::IAM::Role`
+ `AWS::IAM::User`
+ `AWS::RDS::DBInstance`
+ `AWS::RDS::DBSecurityGroup`
+ `AWS::RDS::DBSnapshot`
+ `AWS::RDS::DBSubnetGroup`
+ `AWS::RDS::EventSubscription`
+ `AWS::Redshift::Cluster`
+ `AWS::Redshift::ClusterParameterGroup`
+ `AWS::Redshift::ClusterSecurityGroup`
+ `AWS::Redshift::ClusterSnapshot`
+ `AWS::Redshift::ClusterSubnetGroup`
+ `AWS::Redshift::EventSubscription`
+ `AWS::S3::Bucket`
## Amazon EventBridge format for Amazon Config
The EventBridge [event](https://docs.amazonaws.cn/eventbridge/latest/userguide/eb-events.html) for Amazon Config has the following format:
```
{
"version": "0",
"id": "cd4d811e-ab12-322b-8255-872ce65b1bc8",
"detail-type": "event type",
"source": "aws.config",
"account": "111122223333",
"time": "2018-03-22T00:38:11Z",
"region": "us-east-1",
"resources": [
resources
],
"detail": {
specific message type
}
}
```
## Creating Amazon EventBridge Rule for Amazon Config
Use the following steps to create an EventBridge rule that triggers on an event emitted by Amazon Config. Events are emitted on a best effort basis.
1. In the navigation pane, choose **Rules**.
1. Choose **Create rule**.
1. 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.
**Note**
An event bus receives events from a source, uses rules to evaluate them, applies any configured input transformation, and routes them to the appropriate target(s). Your account's default event bus receives events from Amazon Web Services services. A custom event bus can receive events from your custom applications and services. A partner event bus receives events from an event source created by an SaaS partner. These events come from the partners services or applications. For more information, see [Event buses in Amazon EventBridge](https://docs.amazonaws.cn/eventbridge/latest/userguide/eb-event-bus.html) in the *Amazon EventBridge User Guide*.
1. For **Rule type**, choose **Rule with an event pattern**.
1. For **Event source**, choose **Amazon events or EventBridge partner events**.
1. (Optional) For **Sample event type**, choose **Amazon events**.
1. (Optional) For **Sample events**, choose the event type that triggers the rule:
+ Choose **Amazon API Call from CloudTrail** to base rules on API calls made to this service. For more information about creating this type of rule, see [Tutorial: Create an Amazon EventBridge rule for Amazon CloudTrail API calls](https://docs.amazonaws.cn/eventbridge/latest/userguide/eb-ct-api-tutorial.html).
+ Choose **Config Configuration Item Change** to get notifications when a resource in your account changes.
As described in these support articles, you can use EventBridge to receive custom email notifications when a resource is created or deleted, [How can I receive custom email notifications when a resource is created in my Amazon Web Services account using Amazon Config service?](http://www.amazonaws.cn/support-plans/knowledge-center/config-email-resource-created/) and [How can I receive custom email notifications when a resource is deleted in my Amazon Web Services account using Amazon Config service?](http://www.amazonaws.cn/support-plans/knowledge-center/config-email-resource-deleted/).
+ Choose **Config Rules Compliance Change** to get notifications when a compliance check to your rules fails.
As described in this support article, you can use EventBridge to receive custom email notifications when a resource is noncompliant, [How can I be notified when an Amazon resource is noncompliant using Amazon Config?](https://repost.aws/knowledge-center/config-resource-non-compliant).
+ Choose **Config Rules Re-evaluation Status** to get reevaluation status notifications.
+ Choose **Config Configuration Snapshot Delivery Status** to get configuration snapshot delivery status notifications.
+ Choose **Config Configuration History Delivery Status** to get configuration history delivery status notifications.
1. For **Creation method**, choose **Use pattern form**.
1. For **Event source**, choose **Amazon services**.
1. For **Amazon service**, choose **Config**.
1. For **Event type**, choose the event type that triggers the rule:
+ Choose **All Events** to make a rule that applies to all Amazon services. If you choose this option, you cannot choose specific message types, rule names, resource types, or resource IDs.
+ Choose **Amazon API Call from CloudTrail** to base rules on API calls made to this service. For more information about creating this type of rule, see [Tutorial: Create an Amazon EventBridge rule for Amazon CloudTrail API calls](https://docs.amazonaws.cn/eventbridge/latest/userguide/eb-ct-api-tutorial.html).
+ Choose **Config Configuration Item Change** to get notifications when a resource in your account changes.
As described in these support articles, you can use EventBridge to receive custom email notifications when a resource is created or deleted, [How can I receive custom email notifications when a resource is created in my Amazon Web Services account using Amazon Config service?](http://www.amazonaws.cn/support-plans/knowledge-center/config-email-resource-created/) and [How can I receive custom email notifications when a resource is deleted in my Amazon Web Services account using Amazon Config service?](http://www.amazonaws.cn/support-plans/knowledge-center/config-email-resource-deleted/).
+ Choose **Config Rules Compliance Change** to get notifications when a compliance check to your rules fails.
As described in this support article, you can use EventBridge to receive custom email notifications when a resource is noncompliant, [How can I be notified when an Amazon resource is noncompliant using Amazon Config?](https://repost.aws/knowledge-center/config-resource-non-compliant).
+ Choose **Config Rules Re-evaluation Status** to get reevaluation status notifications.
+ Choose **Config Configuration Snapshot Delivery Status** to get configuration snapshot delivery status notifications.
+ Choose **Config Configuration History Delivery Status** to get configuration history delivery status notifications.
1. Choose **Any message type** to receive notifications of any type. Choose **Specific message type(s)** to receive the following types of notifications:
+ If you choose **ConfigurationItemChangeNotification**, you receive messages when the configuration of a resource that Amazon Config evaluates has changed.
+ If you choose **ComplianceChangeNotification**, you receive messages when the compliance type of a resource that Amazon Config evaluates has changed.
+ If you choose **ConfigRulesEvaluationStarted**, you receive messages when Amazon Config starts evaluating your rule against the specified resources.
+ If you choose **ConfigurationSnapshotDeliveryCompleted**, you receive messages when Amazon Config successfully delivers the configuration snapshot to your Amazon S3 bucket.
+ If you choose **ConfigurationSnapshotDeliveryFailed**, you receive messages when Amazon Config fails to deliver the configuration snapshot to your Amazon S3 bucket.
+ If you choose **ConfigurationSnapshotDeliveryStarted**, you receive messages when Amazon Config starts delivering the configuration snapshot to your Amazon S3 bucket.
+ If you choose **ConfigurationHistoryDeliveryCompleted**, you receive messages when Amazon Config successfully delivers the configuration history to your Amazon S3 bucket.
1. If you chose a specific event type from the **Event Type** dropdown list, choose **Any resource type** to make a rule that applies to all Amazon Config supported resource types.
Or choose **Specific resource type(s)**, and then type the Amazon Config supported resource type (for example, `AWS::EC2::Instance`).
1. If you chose a specific event type from the **Event Type** dropdown list, choose **Any resource ID** to include any Amazon Config supported resource ID.
Or choose **Specific resource ID(s)**, and then type the Amazon Config supported resource ID (for example, `i-04606de676e635647`).
1. If you chose a specific event type from the **Event Type** dropdown list, choose **Any rule name** to include any Amazon Config supported rule.
Or choose **Specific rule name(s)**, and then type the Amazon Config supported rule (for example, **required-tags**).
1. For **Select target(s)**, choose the type of target you have prepared to use with this rule, and then configure any additional options required by that type.
1. The fields displayed vary depending on the service you choose. Enter information specific to this target type as needed.
1. For many target types, EventBridge needs permissions to send events to the target. In these cases, EventBridge can create the IAM role needed for your rule to run.
+ To create an IAM role automatically, choose **Create a new role for this specific resource**.
+ To use an IAM role that you created earlier, choose **Use existing role**.
1. (Optional) Choose **Add target** to add another target for this rule.
1. (Optional) Enter one or more tags for the rule. For more information, see [Amazon EventBridge tags](https://docs.amazonaws.cn/eventbridge/latest/userguide/eb-tagging.html).
1. Review your rule setup to make sure it meets your event-monitoring requirements.
1. Choose **Create** to confirm your selection.