[Solved] You wrote this JSON snippet to request a Spot Instance but it fails: { "InstanceCount": 1, "Type": "one-time", "LaunchSpecification": { "InstanceType": "t3.micro", "ImageId":... | AWS

AWS - Cost Optimization

You wrote this JSON snippet to request a Spot Instance but it fails:

{
  "InstanceCount": 1,
  "Type": "one-time",
  "LaunchSpecification": {
    "InstanceType": "t3.micro",
    "ImageId": "ami-0abcdef1234567890"
  }
}

What is the likely error causing the failure?

AWrong <code>Type</code> value; should be "persistent" only.

BMissing the <code>SpotPrice</code> field to set max price.

CIncorrect <code>InstanceCount</code> value; must be zero.

DInvalid <code>ImageId</code> format; must be numeric only.

Step-by-Step Solution

Solution:

Step 1: Check required fields for Spot Instance request
Spot requests require a SpotPrice to specify max price willing to pay.
Step 2: Validate other fields
InstanceCount of 1 is valid, Type can be "one-time", and ImageId format is correct.
Final Answer:
Missing the SpotPrice field to set max price. -> Option B
Quick Check:
SpotPrice required for request [OK]

Quick Trick: SpotPrice is mandatory in Spot Instance requests [OK]

Common Mistakes:

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You wrote this JSON snippet to request a Spot Instance but it fails: