Content Comparison

# request the usually cheapest $0.13 spot 64G EBS instance at AWS
aws ec2 request-spot-instances --spot-price "0.25" --instance-count 1 --type "one-time" --launch-specification file://aws_ec2_spot_cli.json

# don't pass in the the following - it will be generated for the EBS volume
            "SnapshotId": "snap-0cfc17b071e696816"
launch specification json
{
      "ImageId": "ami-c0c964ba",
      "InstanceType": "r4.2xlarge",
      "KeyName": "obrien_systems_aws_20141115",
      "BlockDeviceMappings": [
        {
          "DeviceName": "/dev/sda1",
          "Ebs": {
            "DeleteOnTermination": true,
            "VolumeType": "gp2",
            "VolumeSize": 120
          }
        }
      ],
      "SecurityGroupIds": [ "sg-322c4842" ]
}
# results
{
    "SpotInstanceRequests": [
        {
            "Status": {
                "Message": "Your Spot request has been submitted for review, and is pending evaluation.", 
                "Code": "pending-evaluation", 
                "UpdateTime": "2017-10-29T14:58:58.000Z"
            }, 
            "ProductDescription": "Linux/UNIX", 
            "InstanceInterruptionBehavior": "terminate", 
            "SpotInstanceRequestId": "sir-1tyr5etg", 
            "State": "open", 
            "LaunchSpecification": {
                "Placement": {
                    "AvailabilityZone": "us-east-1a"
                }, 
                "ImageId": "ami-cd0f5cb6", 
                "BlockDeviceMappings": [
                    {
                        "DeviceName": "/dev/sda1", 
                        "Ebs": {
                            "SnapshotId": "snap-0cfc17b071e696816", 
                            "DeleteOnTermination": true, 
                            "VolumeType": "gp2", 
                            "VolumeSize": 120
                        }
                    }
                ], 
                "KeyName": "obrien_systems_aws_20141115", 
                "SecurityGroups": [
                    {
                        "GroupName": "all_open", 
                        "GroupId": "sg-322c4842"
                    }
                ], 
                "SubnetId": "subnet-ece37889", 
                "Monitoring": {
                    "Enabled": false
                }, 
                "InstanceType": "r4.2xlarge"
            }, 
            "Type": "one-time", 
            "CreateTime": "2017-10-29T14:58:58.000Z", 
            "SpotPrice": "0.250000"
        }
    ]
}