Describe the configuration, instances, and event history for EC2 Fleet

You can describe your EC2 Fleet configuration, the instances in your EC2 Fleet, and the event history of your EC2 Fleet.

Describe all your EC2 Fleets

Use the describe-fleets command to describe all your EC2 Fleets.

aws ec2 describe-fleets

aws ec2 describe-fleets --fleet-ids fleet-8a22eee4-f489-ab02-06b8-832a7EXAMPLE

Example output

{
    "Fleets": [
        {
            "ActivityStatus": "fulfilled",
            "CreateTime": "2022-02-09T03:35:52+00:00",
            "FleetId": "fleet-364457cd-3a7a-4ed9-83d0-7b63e51bb1b7",
            "FleetState": "active",
            "ExcessCapacityTerminationPolicy": "termination",
            "FulfilledCapacity": 2.0,
            "FulfilledOnDemandCapacity": 0.0,
            "LaunchTemplateConfigs": [
                {
                    "LaunchTemplateSpecification": {
                        "LaunchTemplateName": "my-launch-template",
                        "Version": "$Latest"
                    }
                }
            ],
            "TargetCapacitySpecification": {
                "TotalTargetCapacity": 2,
                "OnDemandTargetCapacity": 0,
                "SpotTargetCapacity": 2,
                "DefaultTargetCapacityType": "spot"
            },
            "TerminateInstancesWithExpiration": false,
            "Type": "maintain",
            "ReplaceUnhealthyInstances": false,
            "SpotOptions": {
                "AllocationStrategy": "capacity-optimized",
                "InstanceInterruptionBehavior": "terminate"
            },
            "OnDemandOptions": {
                "AllocationStrategy": "lowestPrice"
            }
        }
    ]
}

Describe all instances in the specified EC2 Fleet

Use the describe-fleet-instances command to describe the instances for the specified EC2 Fleet. The returned list of running instances is refreshed periodically and might be out of date.

aws ec2 describe-fleet-instances  --fleet-id fleet-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE

Example output

{
    "ActiveInstances": [
        {
            "InstanceId": "i-09cd595998cb3765e", 
            "InstanceHealth": "healthy", 
            "InstanceType": "m4.large", 
            "SpotInstanceRequestId": "sir-86k84j6p"
        }, 
        {
            "InstanceId": "i-09cf95167ca219f17", 
            "InstanceHealth": "healthy", 
            "InstanceType": "m4.large", 
            "SpotInstanceRequestId": "sir-dvxi7fsm"
        }
    ], 
    "FleetId": "fleet-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE"
}

Describe the event history for your EC2 Fleet

Use the describe-fleet-history command to describe the events for the specified EC2 Fleet for the specified time. For more information about the events returned in the output, see EC2 Fleet event types.

aws ec2 describe-fleet-history \
    --fleet-id fleet-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE \
    --start-time 2018-04-10T00:00:00Z

Example output

{
    "HistoryRecords": [
        {
            "EventInformation": {
                "EventSubType": "submitted"
            },
            "EventType": "fleetRequestChange",
            "Timestamp": "2020-09-01T18:26:05.000Z"
        },
        {
            "EventInformation": {
                "EventSubType": "active"
            },
            "EventType": "fleetRequestChange",
            "Timestamp": "2020-09-01T18:26:15.000Z"
        },
        {
            "EventInformation": {
                "EventDescription": "t2.small, ami-07c8bc5c1ce9598c3, ...",
                "EventSubType": "progress"
            },
            "EventType": "fleetRequestChange",
            "Timestamp": "2020-09-01T18:26:17.000Z"
        },
        {
            "EventInformation": {
                "EventDescription": "{\"instanceType\":\"t2.small\", ...}",
                "EventSubType": "launched",
                "InstanceId": "i-083a1c446e66085d2"
            },
            "EventType": "instanceChange",
            "Timestamp": "2020-09-01T18:26:17.000Z"
        },
        {
            "EventInformation": {
                "EventDescription": "{\"instanceType\":\"t2.small\", ...}",
                "EventSubType": "launched",
                "InstanceId": "i-090db02406cc3c2d6"
            },
            "EventType": "instanceChange",
            "Timestamp": "2020-09-01T18:26:17.000Z"
        }
    ], 
    "FleetId": "fleet-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE", 
    "LastEvaluatedTime": "1970-01-01T00:00:00.000Z", 
    "StartTime": "2018-04-09T23:53:20.000Z"
}