SOA-C02 · Question #566
A company has created an AWS CloudFormation template that consists of the AWS::EC2::Instance resource and a custom CloudFormation resource. The custom CloudFormation resource is an AWS Lambda function
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Question
A company has created an AWS CloudFormation template that consists of the AWS::EC2::Instance resource and a custom CloudFormation resource. The custom CloudFormation resource is an AWS Lambda function that attempts to run automation on the Amazon EC2 instance. During testing, the Lambda function fails because the Lambda function tries to run before the EC2 instance is launched. Which solution will resolve this issue?
Options
- AAdd a DependsOn attribute to the custom resource. Specify the EC2 instance in the DependsOn
- BUpdate the custom resource's service token to point to a valid Lambda function.
- CUpdate the Lambda function to use the cfn-response module to send a response to the custom
- DUse the Fn::If intrinsic function to check for the EC2 instance before the custom resource runs.
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