aws-cloudformation / aws-cloudformation/cloudformation-coverage-roadmap

(AWS::EC2::Instance) Relay descriptive 'InvalidParameterValue' error message to stack events

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enhancement
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Description

### Name of the resource

AWS::EC2::Instance

### Resource name

_No response_

### Description

I had just resolved an issue whereby a stack was failing to be created as an AWS::EC2::Instance resource was getting stuck in the CREATE_IN_PROGRESS state.

The cause of the issue was ultimately found by inspecting CloudTrail events, finding the respective failing RunInstances event, which included the following error information:

```
errorCode: Client.InvalidParameterValue
errorMessage: Value (xxxxxxxxxxx) for parameter iamInstanceProfile.name is invalid. Invalid IAM Instance Profile name
```

Whilst the issue was resolved by correcting the Instance Profile, it would be nice if Cloudformation could present these details more visibility in stack events.

### Other Details

_No response_

Contributor guide

Open the contributing guide

Research direction

Start with issue #1253 and compare the CloudTrail RunInstances error for AWS::EC2::Instance with the information currently shown in CloudFormation stack events. No files or tests are named; done means stack events expose the descriptive InvalidParameterValue message, including the invalid IAM instance profile detail.

Written by the indexing model from the issue text.

Assessment

Tech stack
aws
Domain
cloud
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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