SOA-C03 · Question #140
A CloudOps engineer has an AWS CloudFormation template of the company's existing infrastructure in us-west-2. The CloudOps engineer attempts to use the template to launch a new stack in eu-west-1, but
The correct answer is B. The template referenced an Amazon Machine Image (AMI) that is not available in eu-west-1. D. The template requested services that do not exist in eu-west-1.. AMIs are Region-specific, so an AMI ID valid in us-west-2 will not exist in eu-west-1. This causes resource creation failures when CloudFormation tries to launch EC2 instances using that unavailable AMI. Some AWS services or resource types are not available in every Region. If th
Question
A CloudOps engineer has an AWS CloudFormation template of the company's existing infrastructure in us-west-2. The CloudOps engineer attempts to use the template to launch a new stack in eu-west-1, but the stack only partially deploys, receives an error message, and then rolls back. Why would this template fail to deploy? (Choose two.)
Options
- AThe template referenced an IAM user that is not available in eu-west-1.
- BThe template referenced an Amazon Machine Image (AMI) that is not available in eu-west-1.
- CThe template did not have the proper level of permissions to deploy the resources.
- DThe template requested services that do not exist in eu-west-1.
- ECloudFormation templates can be used only to update existing services
How the community answered
(43 responses)- A9% (4)
- B74% (32)
- C2% (1)
- E14% (6)
Explanation
AMIs are Region-specific, so an AMI ID valid in us-west-2 will not exist in eu-west-1. This causes resource creation failures when CloudFormation tries to launch EC2 instances using that unavailable AMI. Some AWS services or resource types are not available in every Region. If the template includes such a service, the deployment will fail in Regions where the service is unavailable. Together, these are the most common causes of CloudFormation stack failures when deploying templates across Regions.
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