Amazon EventBridge events for Amazon EBS - Amazon EBS
EBS volume eventsEBS volume modification eventsEBS snapshot eventsEBS Snapshots Archive eventsEBS fast snapshot restore events

Amazon EventBridge events for Amazon EBS

Amazon EBS sends events to Amazon EventBridge for actions performed on volumes and snapshots. With EventBridge, you can establish rules that trigger programmatic actions in response to these events. For example, you can create a rule that sends a notification to your email when a snapshot is enabled for fast snapshot restore.

Events in EventBridge are represented as JSON objects. The fields that are unique to the event are contained in the "detail" section of the JSON object. The "event" field contains the event name. The "result" field contains the completed status of the action that triggered the event. For more information, see Amazon EventBridge event patterns in the Amazon EventBridge User Guide.

For more information, see What Is Amazon EventBridge? in the Amazon EventBridge User Guide.

Events

EBS volume events

Amazon EBS sends events to EventBridge when the following volume events occur.

Create volume (createVolume)

The createVolume event is sent to your AWS account when an action to create a volume completes. However, it is not saved, logged, or archived. This event can have a result of either available or failed. Creation will fail if an invalid AWS KMS key was provided, as shown in the examples below.

Event data

The listing below is an example of a JSON object emitted by EBS for a successful createVolume event. 

{
   "version": "0",
   "id": "01234567-0123-0123-0123-012345678901",
   "detail-type": "EBS Volume Notification",
   "source": "aws.ec2",
   "account": "012345678901",
   "time": "yyyy-mm-ddThh:mm:ssZ",
   "region": "us-east-1",
   "resources": [
      "arn:aws:ec2:us-east-1:012345678901:volume/vol-01234567"
   ],
   "detail": {
      "result": "available",
      "cause": "",
      "event": "createVolume",
      "request-id": "01234567-0123-0123-0123-0123456789ab"
   }
}

The listing below is an example of a JSON object emitted by EBS after a failed createVolume event. The cause for the failure was a disabled KMS key.

{
  "version": "0",
  "id": "01234567-0123-0123-0123-0123456789ab",
  "detail-type": "EBS Volume Notification",
  "source": "aws.ec2",
  "account": "012345678901",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "sa-east-1",
  "resources": [
    "arn:aws:ec2:sa-east-1:0123456789ab:volume/vol-01234567",
  ],
  "detail": {
    "event": "createVolume",
    "result": "failed",
    "cause": "arn:aws:kms:sa-east-1:0123456789ab:key/01234567-0123-0123-0123-0123456789ab is disabled.",
    "request-id": "01234567-0123-0123-0123-0123456789ab",
  }
}

The following is an example of a JSON object that is emitted by EBS after a failed createVolume event. The cause for the failure was a KMS key pending import.

{  
  "version": "0",  
  "id": "01234567-0123-0123-0123-0123456789ab",  
  "detail-type": "EBS Volume Notification",  
  "source": "aws.ec2",  
  "account": "012345678901",  
  "time": "yyyy-mm-ddThh:mm:ssZ",  
  "region": "sa-east-1",  
  "resources": [    
    "arn:aws:ec2:sa-east-1:0123456789ab:volume/vol-01234567",  
  ],  
  "detail": {    
    "event": "createVolume",    
    "result": "failed",    
    "cause": "arn:aws:kms:sa-east-1:0123456789ab:key/01234567-0123-0123-0123-0123456789ab is pending import.",    
    "request-id": "01234567-0123-0123-0123-0123456789ab",  
  }
}

Delete volume (deleteVolume)

The deleteVolume event is sent to your AWS account when an action to delete a volume completes. However, it is not saved, logged, or archived. This event has the result deleted. If the deletion does not complete, the event is never sent.

Event data

The listing below is an example of a JSON object emitted by EBS for a successful deleteVolume event. 

{
   "version": "0",
   "id": "01234567-0123-0123-0123-012345678901",
   "detail-type": "EBS Volume Notification",
   "source": "aws.ec2",
   "account": "012345678901",
   "time": "yyyy-mm-ddThh:mm:ssZ",
   "region": "us-east-1",
   "resources": [
      "arn:aws:ec2:us-east-1:012345678901:volume/vol-01234567"
   ],
   "detail": {
      "result": "deleted",
      "cause": "",
      "event": "deleteVolume",
      "request-id": "01234567-0123-0123-0123-0123456789ab"
   }
}

Volume attach or reattach (attachVolume, reattachVolume)

The attachVolume or reattachVolume event is sent to your AWS account if a volume fails to attach or reattach to an instance. However, it is not saved, logged, or archived. If you use a KMS key to encrypt an EBS volume and the KMS key becomes invalid, EBS will emit an event if that KMS key is later used to attach or reattach to an instance, as shown in the examples below.

Event data

The listing below is an example of a JSON object emitted by EBS after a failed attachVolume event. The cause for the failure was a KMS key pending deletion.

Note

AWS may attempt to reattach to a volume following routine server maintenance.

{
  "version": "0",    
  "id": "01234567-0123-0123-0123-0123456789ab",
  "detail-type": "EBS Volume Notification",
  "source": "aws.ec2",
  "account": "012345678901",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "us-east-1",
  "resources": [
  "arn:aws:ec2:us-east-1:0123456789ab:volume/vol-01234567",
  "arn:aws:kms:us-east-1:0123456789ab:key/01234567-0123-0123-0123-0123456789ab"
  ],
  "detail": {
    "event": "attachVolume",
    "result": "failed",
    "cause": "arn:aws:kms:us-east-1:0123456789ab:key/01234567-0123-0123-0123-0123456789ab is pending deletion.",
    "request-id": ""
  }
}

The listing below is an example of a JSON object emitted by EBS after a failed reattachVolume event. The cause for the failure was a KMS key pending deletion.

{
  "version": "0",    
  "id": "01234567-0123-0123-0123-0123456789ab",
  "detail-type": "EBS Volume Notification",
  "source": "aws.ec2",
  "account": "012345678901",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "us-east-1",
  "resources": [
  "arn:aws:ec2:us-east-1:0123456789ab:volume/vol-01234567",
  "arn:aws:kms:us-east-1:0123456789ab:key/01234567-0123-0123-0123-0123456789ab"
  ],
  "detail": {
    "event": "reattachVolume",
    "result": "failed",
    "cause": "arn:aws:kms:us-east-1:0123456789ab:key/01234567-0123-0123-0123-0123456789ab is pending deletion.",
    "request-id": ""
  }
}

Detach volume (detachVolume)

The detachVolume event is sent to your AWS account when a volume is detached from an Amazon EC2 instance.

Event data

The following is an example of a successful detachVolume event.

{
  "version":"0",
  "id":"2ec37298-1234-e436-70fc-c96b1example",
  "detail-type":"AWS API Call via CloudTrail",
  "source":"aws.ec2",
  "account":"123456789012",
  "time":"2024-03-18T16:35:52Z",
  "region":"us-east-1",
  "resources":[],
  "detail":
  {
    "eventVersion":"1.09",
    "userIdentity":
    {
      "type":"IAMUser",
      "principalId":"AIDAJT12345SQ2EXAMPLE",
      "arn":"arn:aws:iam::123456789012:user/administrator",
      "accountId":"123456789012",
      "accessKeyId":"AKIAJ67890A6EXAMPLE",
      "userName":"administrator"
    },
    "eventTime":"2024-03-18T16:35:52Z",
    "eventSource":"ec2.amazonaws.com",
    "eventName":"DetachVolume",
    "awsRegion":"us-east-1",
    "sourceIPAddress":"12.12.123.12",
    "userAgent":"aws-cli/2.7.12 Python/3.9.11 Windows/10 exe/AMD64 prompt/off command/ec2.detach-volume",
    "requestParameters":
    {
      "volumeId":"vol-072577c46bexample",
      "force":false
    },
    "responseElements":
    {
      "requestId":"1234513a-6292-49ea-83f8-85e95example",
      "volumeId":"vol-072577c46bexample",
      "instanceId":"i-0217f7eb3dexample",
      "device":"/dev/sdb",
      "status":"detaching",
      "attachTime":1710776815000
    },
    "requestID":"1234513a-6292-49ea-83f8-85e95example",
    "eventID":"1234551d-a15a-43eb-9e69-c983aexample",
    "readOnly":false,
    "eventType":"AwsApiCall",
    "managementEvent":true,
    "recipientAccountId":"123456789012",
    "eventCategory":"Management",
    "tlsDetails":
    {
      "tlsVersion":"TLSv1.3",
      "cipherSuite":"TLS_AES_128_GCM_SHA256",
      "clientProvidedHostHeader":"ec2.us-east-1.amazonaws.com"
    }
  }
}

EBS volume modification events

Amazon EBS sends modifyVolume events to EventBridge when a volume is modified. However, it is not saved, logged, or archived.

{
   "version": "0",
   "id": "01234567-0123-0123-0123-012345678901",
   "detail-type": "EBS Volume Notification",
   "source": "aws.ec2",
   "account": "012345678901",
   "time": "yyyy-mm-ddThh:mm:ssZ",
   "region": "us-east-1",
   "resources": [
      "arn:aws:ec2:us-east-1:012345678901:volume/vol-03a55cf56513fa1b6"
   ],
   "detail": {
      "result": "optimizing",
      "cause": "",
      "event": "modifyVolume",
      "request-id": "01234567-0123-0123-0123-0123456789ab"
   }
}

EBS snapshot events

Amazon EBS sends events to EventBridge when the following volume events occur.

Create snapshot (createSnapshot)

The createSnapshot event is sent to your AWS account when an action to create a snapshot completes. However, it is not saved, logged, or archived. This event can have a result of either succeeded or failed.

Event data

The listing below is an example of a JSON object emitted by EBS for a successful createSnapshot event. In the detail section, the source field contains the ARN of the source volume. The startTime and endTime fields indicate when creation of the snapshot started and completed.

{
  "version": "0",
  "id": "01234567-0123-0123-0123-012345678901",
  "detail-type": "EBS Snapshot Notification",
  "source": "aws.ec2",
  "account": "012345678901",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "us-east-1",
  "resources": [
     "arn:aws:ec2::us-west-2:snapshot/snap-01234567"
  ],
  "detail": {
    "event": "createSnapshot",
    "result": "succeeded",
    "cause": "",
    "request-id": "",
    "snapshot_id": "arn:aws:ec2::us-west-2:snapshot/snap-01234567",
    "source": "arn:aws:ec2::us-west-2:volume/vol-01234567",
    "startTime": "yyyy-mm-ddThh:mm:ssZ",
    "endTime": "yyyy-mm-ddThh:mm:ssZ"  }
}

Create snapshots (createSnapshots)

The createSnapshots event is sent to your AWS account when an action to create a multi-volume snapshot completes. This event can have a result of either succeeded or failed.

Event data

The listing below is an example of a JSON object emitted by EBS for a successful createSnapshots event. In the detail section, the source field contains the ARNs of the source volumes of the multi-volume snapshot set. The startTime and endTime fields indicate when creation of the snapshot started and completed.

{
  "version": "0",
  "id": "01234567-0123-0123-0123-012345678901",
  "detail-type": "EBS Multi-Volume Snapshots Completion Status",
  "source": "aws.ec2",
  "account": "012345678901",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "us-east-1",
  "resources": [
    "arn:aws:ec2::us-east-1:snapshot/snap-01234567",
    "arn:aws:ec2::us-east-1:snapshot/snap-012345678"
  ],
  "detail": {
    "event": "createSnapshots",
    "result": "succeeded",
    "cause": "",
    "request-id": "",
    "startTime": "yyyy-mm-ddThh:mm:ssZ",
    "endTime": "yyyy-mm-ddThh:mm:ssZ",
    "snapshots": [
      {
        "snapshot_id": "arn:aws:ec2::us-east-1:snapshot/snap-01234567",
        "source": "arn:aws:ec2::us-east-1:volume/vol-01234567",
        "status": "completed"
      },
      {
        "snapshot_id": "arn:aws:ec2::us-east-1:snapshot/snap-012345678",
        "source": "arn:aws:ec2::us-east-1:volume/vol-012345678",
        "status": "completed"
      }
    ]
  }
}

The listing below is an example of a JSON object emitted by EBS after a failed createSnapshots event. The cause for the failure was one or more snapshots for the multi-volume snapshot set failed to complete. The values of snapshot_id are the ARNs of the failed snapshots. startTime and endTime represent when the create-snapshots action started and ended.

{
  "version": "0",
  "id": "01234567-0123-0123-0123-012345678901",
  "detail-type": "EBS Multi-Volume Snapshots Completion Status",
  "source": "aws.ec2",
  "account": "012345678901",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "us-east-1",
  "resources": [
    "arn:aws:ec2::us-east-1:snapshot/snap-01234567",
    "arn:aws:ec2::us-east-1:snapshot/snap-012345678"
  ],
"detail": {
    "event": "createSnapshots",
    "result": "failed",
    "cause": "Snapshot snap-01234567 is in status error",
   "request-id": "",
    "startTime": "yyyy-mm-ddThh:mm:ssZ",
    "endTime": "yyyy-mm-ddThh:mm:ssZ",
    "snapshots": [
      {
        "snapshot_id": "arn:aws:ec2::us-east-1:snapshot/snap-01234567",
        "source": "arn:aws:ec2::us-east-1:volume/vol-01234567",
        "status": "error"
      },
      {
        "snapshot_id": "arn:aws:ec2::us-east-1:snapshot/snap-012345678",
        "source": "arn:aws:ec2::us-east-1:volume/vol-012345678",
        "status": "error"
      }
    ]
  }
}

Copy snapshot (copySnapshot)

The copySnapshot event is sent to your AWS account when an action to copy a snapshot completes. However, it is not saved, logged, or archived. This event can have a result of either succeeded or failed.

In the detail section, source is the ARN of the source snapshot, and snapshot_id is the ARN of the snapshot copy. startTime and endTime indicate when the copy operation started and ended. incremental indicates whether the snapshot copy is an incremental snapshot (true), or a full snapshot (false). transferType indicates whether the whether the snapshot copy operation was a standard copy operation or a time-based copy operation. For more information, see Time-based copies for Amazon EBS snapshots.

If you are copying the snapshot across Regions, then the event is emitted in the destination Region.

Scenario 1: Standard snapshot copy operation completes

The following is an example of an event that is sent to your account when a standard snapshot copy operation completes successfully. Note that transferType is standard.

{
  "version": "0",
  "id": "01234567-0123-0123-0123-012345678901",
  "detail-type": "EBS Snapshot Notification",
  "source": "aws.ec2",
  "account": "123456789012",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "us-east-1",
  "resources": [
    "arn:aws:ec2::us-west-2:snapshot/snap-01234567"
  ],
  "detail": {
    "event": "copySnapshot",
    "result": "succeeded",
    "cause": "",
    "request-id": "",
    "snapshot_id": "arn:aws:ec2::us-west-2:snapshot/snap-01234567",
    "source": "arn:aws:ec2::eu-west-1:snapshot/snap-76543210",
    "startTime": "yyyy-mm-ddThh:mm:ssZ",
    "endTime": "yyyy-mm-ddThh:mm:ssZ",
    "incremental": "true",
    "transferType": "standard"
  }
}
Scenario 2: Time-based snapshot copy operation completes within completion duration

The following is an example of an event that is sent to your account when a time-based snapshot copy operation completes within its completion duration. Note that transferType is time-based to indicate that it was a time-based snapshot copy operation. completionDurationStartTime indicates when the completion duration started.

{
  "version": "0",
  "id": "01234567-0123-0123-0123-012345678901",
  "detail-type": "EBS Snapshot Notification",
  "source": "aws.ec2",
  "account": "123456789012",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "us-east-1",
  "resources": [
    "arn:aws:ec2::us-west-2:snapshot/snap-01234567"
  ],
  "detail": {
    "event": "copySnapshot",
    "result": "succeeded",
    "cause": "",
    "request-id": "",
    "startTime": "yyyy-mm-ddThh:mm:ssZ",
    "endTime": "yyyy-mm-ddThh:mm:ssZ",
    "snapshot_id": "arn:aws:ec2::us-west-2:snapshot/snap-01234567",
    "source": "arn:aws:ec2::eu-west-1:snapshot/snap-76543210",
    "incremental": "true", 
    "completionDurationStartTime":"2024-11-16T06:27:33.816Z",
    "transferType": "time-based"
  }
}
Scenario 3: Time-based snapshot copy operation completes but misses the requested completion duration

When a time-based snapshot copy operation completes, but fails to meet the requested completion duration, CloudWatch sends two events to your account. The following are examples of those events.

  • The first event is sent to your account as soon as the completion duration is missed, even if the copy operation is still in progress. For this event, the detail-type is EBS Copy Snapshot Missed Completion Duration, and missedCompletionDurationCause provides the reason.

    {
 "version":"0",
 "id":"fd90eb95-0938-e02c-cf55-b81363b8ac12",
 "detail-type":"EBS Copy Snapshot Missed Completion Duration",
 "source":"aws.ec2",
 "account":"123456789012",
 "time":"2024-11-19T18:17:08Z",
 "region":"us-east-1",
 "resources": ["arn:aws:ec2:us-east-1:123456789012:snapshot/snap-01234567890abcedf"],
 "detail":{
   "event":"copySnapshot",
   "missedCompletionDurationCause":"Snapshot copy was not able to meet the specified completion duration because your snapshot copy operation throughput quota was exceeded.",
   "snapshot_id":"arn:aws:ec2:us-east-1:123456789012:snapshot/snap-01234567890abcedf",
   "source":"arn:aws:ec2:us-east-1:123456789012:snapshot/snap-00987654321fedcba",
   "startTime": "Sun Nov 24 22:32:55 UTC 2024",
   "transferType": "time-based"
   }
}

  • The second event is sent to your account only once the snapshot is completed. The event includes missedCompletionDurationCause, which provides the reason.

    {
  "version": "0",
  "id": "01234567-0123-0123-0123-012345678901",
  "detail-type": "EBS Snapshot Notification",
  "source": "aws.ec2",
  "account": "123456789012",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "us-east-1",
  "resources": [
    "arn:aws:ec2::us-west-2:snapshot/snap-01234567"
  ],
  "detail": {
    "event": "copySnapshot",
    "result": "succeeded",
    "cause": "",
    "request-id": "",
    "startTime": "yyyy-mm-ddThh:mm:ssZ",
    "endTime": "yyyy-mm-ddThh:mm:ssZ",
    "snapshot_id": "arn:aws:ec2::us-west-2:snapshot/snap-01234567",
    "source": "arn:aws:ec2::eu-west-1:snapshot/snap-76543210",
    "incremental": "true", 
    "completionDurationStartTime":"2024-11-16T06:27:33.816Z",
    "missedCompletionDurationCause":"Snapshot copy was not able to meet the specified completion duration because your snapshot copy operation throughput quota was exceeded.",
    "transferType": "time-based"
  }
}
Scenario 4: Snapshot copy operation fails

The following is an example of an event that is sent to your account when a snapshot copy operation fails. Note that result is failed to indicate that the operation failed.

{
  "version": "0",
  "id": "01234567-0123-0123-0123-012345678901",
  "detail-type": "EBS Snapshot Notification",
  "source": "aws.ec2",
  "account": "123456789012",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "us-east-1",
  "resources": [
    "arn:aws:ec2::us-west-2:snapshot/snap-01234567"
  ],
  "detail": {
    "event": "copySnapshot",
    "result": "failed",
    "cause": "Source snapshot ID is not valid",
    "request-id": "",
    "snapshot_id": "arn:aws:ec2::us-west-2:snapshot/snap-01234567",
    "source": "arn:aws:ec2::eu-west-1:snapshot/snap-76543210",
    "startTime": "yyyy-mm-ddThh:mm:ssZ",
    "endTime": "yyyy-mm-ddThh:mm:ssZ"
  }
}

Share snapshot (shareSnapshot)

The shareSnapshot event is sent to your AWS account when another account shares a snapshot with it. However, it is not saved, logged, or archived. The result is always succeeded.

Event data

The following is an example of a JSON object emitted by EBS after a completed shareSnapshot event. In the detail section, the value of source is the AWS account number of the user that shared the snapshot with you. startTime and endTime represent when the share-snapshot action started and ended. The shareSnapshot event is emitted only when a private snapshot is shared with another user. Sharing a public snapshot does not trigger the event.

{
  "version": "0",
  "id": "01234567-01234-0123-0123-012345678901",
  "detail-type": "EBS Snapshot Notification",
  "source": "aws.ec2",
  "account": "012345678901",
  "time": "yyyy-mm-ddThh:mm:ssZ",
  "region": "us-east-1",
  "resources": [
    "arn:aws:ec2::us-west-2:snapshot/snap-01234567"
  ],
  "detail": {
    "event": "shareSnapshot",
    "result": "succeeded",
    "cause": "",
    "request-id": "",
    "snapshot_id": "arn:aws:ec2::us-west-2:snapshot/snap-01234567",
    "source": 012345678901,
    "startTime": "yyyy-mm-ddThh:mm:ssZ",
    "endTime": "yyyy-mm-ddThh:mm:ssZ"
  }
}

EBS Snapshots Archive events

Amazon EBS emits events related to snapshot archiving actions. For more information, see Monitor Amazon EBS snapshot archiving using CloudWatch Events.

EBS fast snapshot restore events

Amazon EBS sends events to EventBridge when the state of fast snapshot restore for a snapshot changes. Events are emitted on a best effort basis.

The following is example data for this event.

{
   "version": "0",
   "id": "01234567-0123-0123-0123-012345678901",
   "detail-type": "EBS Fast Snapshot Restore State-change Notification",
   "source": "aws.ec2",
   "account": "123456789012",
   "time": "yyyy-mm-ddThh:mm:ssZ",
   "region": "us-east-1",
   "resources": [
      "arn:aws:ec2:us-east-1::snapshot/snap-03a55cf56513fa1b6"
   ],
   "detail": {
      "snapshot-id": "snap-1234567890abcdef0",
      "state": "optimizing",
      "zone": "us-east-1a",
      "message": "Client.UserInitiated - Lifecycle state transition",
   }
}

The possible values for state are enabling, optimizing, enabled, disabling, and disabled.

The possible values for message are as follows:

Client.InvalidSnapshot.InvalidState - The requested snapshot transitioned to an invalid state (Error)

A request to enable fast snapshot restore failed and the state transitioned to disabling or disabled. Fast snapshot restore cannot be enabled for this snapshot.

Client.UserInitiated

The state successfully transitioned to enabling or disabling.

Client.UserInitiated - Lifecycle state transition

The state successfully transitioned to optimizing, enabled, or disabled.

Server.InsufficientCapacity - There was insufficient capacity available to satisfy the request

A request to enable fast snapshot restore failed due to insufficient capacity, and the state transitioned to disabling or disabled. Wait and then try again.

Server.InternalError - An internal error caused the operation to fail

A request to enable fast snapshot restore failed due to an internal error, and the state transitioned to disabling or disabled. Wait and then try again.

Client.InvalidSnapshot.InvalidState - The requested snapshot was deleted or access permissions were revoked

The fast snapshot restore state for the snapshot has transitioned to disabling or disabled because the snapshot was deleted or unshared by the snapshot owner. Fast snapshot restore cannot be enabled for a snapshot that has been deleted or is no longer shared with you.