Determine whether Amazon EC2 terminated a Spot Instance - Amazon Elastic Compute Cloud

Determine whether Amazon EC2 terminated a Spot Instance

A Spot Instance runs until Amazon EC2 terminates it in response to a Spot Instance interruption, or until you terminate it yourself. For more information, see Behavior of Spot Instance interruptions.

After a Spot Instance is terminated, you can use AWS CloudTrail to see whether Amazon EC2 terminated it. If the CloudTrail log includes a BidEvictedEvent, this indicates that Amazon EC2 terminated the Spot Instance. If instead you see a TerminateInstances event, this indicates that a user terminated the Spot Instance.

Alternatively, if you want to receive notification that Amazon EC2 is going to interrupt your Spot Instance, use Amazon EventBridge to respond to the EC2 Spot Instance Interruption Warning event.

To view BidEvictedEvent events in CloudTrail

  1. Open the CloudTrail console at https://console.aws.amazon.com/cloudtrail/.

  2. In the navigation pane, choose Event history.

  3. From the list of filters, choose Event name, and then in the filter field to the right, enter BidEvictedEvent.

  4. (Optional) Select a time range.

  5. If the list is not empty, choose BidEvictedEvent from the resulting entry to open its details page. You can find information about the Spot Instance in the Event record pane, including the ID of the Spot Instance. The following is an example of the event record.

    {
    "eventVersion": "1.05",
    "userIdentity": {
        "accountId": "123456789012",
        "invokedBy": "ec2.amazonaws.com"
    },
    "eventTime": "2016-08-16T22:30:00Z",
    "eventSource": "ec2.amazonaws.com",
    "userAgent": "ec2.amazonaws.com",
    "sourceIPAddress": "ec2.amazonaws.com",
    "eventName": "BidEvictedEvent",
    "awsRegion": "us-east-2",
    "eventID": "d27a6096-807b-4bd0-8c20-a33a83375054",
    "eventType": "AwsServiceEvent",
    "recipientAccountId": "123456789012",
    "RequestParameters": null,
    "ResponseElements": null,
    "serviceEventDetails": {
        "instanceIdSet": [
          "i-1eb2ac8eEXAMPLE"
        ]
    }
}

  6. If you did not find an entry for the BidEvictedEvent event, enter TerminateInstances as the event name. For more information about the event record for TerminateInstances, see Amazon EC2 API event examples.