Get the status of a Spot Instance request - Amazon Elastic Compute Cloud
Get request status informationSpot request status codesEC2 Spot Instance Request Fulfillment event

Get the status of a Spot Instance request

To help you track your Spot Instance requests and plan your use of Spot Instances, use the request status provided by Amazon EC2. For example, the request status can provide the reason why your Spot request isn't fulfilled yet, or list the constraints that are preventing the fulfillment of your Spot request.

At each step of the process—also called the Spot request lifecycle—specific events determine successive request states.

The following illustration shows how Spot Instance requests work. Notice that the request type (one-time or persistent) determines whether the request is opened again when Amazon EC2 interrupts a Spot Instance or if you stop a Spot Instance. If the request is persistent, the request is opened again after your Spot Instance is interrupted. If the request is persistent and you stop your Spot Instance, the request only opens after you start your Spot Instance.

How Spot Instance requests work.
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Get request status information

You can get request status information using the AWS Management Console or a command line tool.

To get request status information using the console

  1. Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.

  2. In the navigation pane, choose Spot Requests and select the Spot request.

  3. To check the status, on the Description tab, check the Status field.

To get request status information using the command line

You can use one of the following commands. For more information about these command line interfaces, see Access Amazon EC2.

Spot request status codes

Spot request status information is composed of a status code, the update time, and a status message. Together, these help you determine the disposition of your Spot request.

The following are the Spot request status codes:

az-group-constraint

Amazon EC2 cannot launch all the instances you requested in the same Availability Zone.

bad-parameters

One or more parameters for your Spot request are not valid (for example, the AMI you specified does not exist). The status message indicates which parameter is not valid.

canceled-before-fulfillment

The user canceled the Spot request before it was fulfilled.

capacity-not-available

There is not enough capacity available for the instances that you requested.

constraint-not-fulfillable

The Spot request can't be fulfilled because one or more constraints are not valid (for example, the Availability Zone does not exist). The status message indicates which constraint is not valid.

fulfilled

The Spot request is active, and Amazon EC2 is launching your Spot Instances.

instance-stopped-by-price

Your instance was stopped because the Spot price exceeded your maximum price.

instance-stopped-by-user

Your instance was stopped because a user stopped the instance or ran the shutdown command from the instance.

instance-stopped-no-capacity

Your instance was stopped due to EC2 capacity management needs.

instance-terminated-by-price

Your instance was terminated because the Spot price exceeded your maximum price. If your request is persistent, the process restarts, so your request is pending evaluation.

instance-terminated-by-schedule

Your Spot Instance was terminated at the end of its scheduled duration.

instance-terminated-by-service

Your instance was terminated from a stopped state.

instance-terminated-by-user or spot-instance-terminated-by-user

You terminated a Spot Instance that had been fulfilled, so the request state is closed (unless it's a persistent request) and the instance state is terminated.

instance-terminated-launch-group-constraint

One or more of the instances in your launch group was terminated, so the launch group constraint is no longer fulfilled.

instance-terminated-no-capacity

Your instance was terminated due to standard capacity management processes.

launch-group-constraint

Amazon EC2 cannot launch all the instances that you requested at the same time. All instances in a launch group are started and terminated together.

limit-exceeded

The limit on the number of EBS volumes or total volume storage was exceeded. For more information, see Quotas for Amazon EBS in the Amazon EBS User Guide.

marked-for-stop

The Spot Instance is marked for stopping.

marked-for-termination

The Spot Instance is marked for termination.

not-scheduled-yet

The Spot request is not evaluated until the scheduled date.

pending-evaluation

After you make a Spot Instance request, it goes into the pending-evaluation state while the system evaluates the parameters of your request.

pending-fulfillment

Amazon EC2 is trying to provision your Spot Instances.

placement-group-constraint

The Spot request can't be fulfilled yet because a Spot Instance can't be added to the placement group at this time.

price-too-low

The request can't be fulfilled yet because your maximum price is below the Spot price. In this case, no instance is launched and your request remains open.

request-canceled-and-instance-running

You canceled the Spot request while the Spot Instances are still running. The request is cancelled, but the instances remain running.

schedule-expired

The Spot request expired because it was not fulfilled before the specified date.

system-error

There was an unexpected system error. If this is a recurring issue, please contact AWS Support for assistance.

EC2 Spot Instance Request Fulfillment event

When a Spot Instance request is fulfilled, Amazon EC2 sends an EC2 Spot Instance Request Fulfillment event to Amazon EventBridge. You can create a rule to take an action whenever this event occurs, such as invoking a Lambda function or notifying an Amazon SNS topic.

The following is example data for this event.

{
    "version": "0",
    "id": "01234567-1234-0123-1234-012345678901",
    "detail-type": "EC2 Spot Instance Request Fulfillment",
    "source": "aws.ec2",
    "account": "123456789012",
    "time": "yyyy-mm-ddThh:mm:ssZ",
    "region": "us-east-2",
    "resources": ["arn:aws:ec2:us-east-2:123456789012:instance/i-1234567890abcdef0"],
    "detail": {
        "spot-instance-request-id": "sir-1a2b3c4d",
        "instance-id": "i-1234567890abcdef0"
    }
}

For more information, see the Amazon EventBridge User Guide.