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Answer: Replicate the custom AMI to us-west-1, update the us-west-1 CloudFormation template with the new AMI ID, and redeploy the stack.
The correct answer is B. The issue arises because the custom AMI ID used in the us-east-1 region does not exist in the us-west-1 region. To resolve this with the least amount of operational overhead, the most efficient approach is to copy the custom AMI from us-east-1 to us-west-1. After copying the AMI, update the AWS CloudFormation template for the us-west-1 region to reference the new AMI ID and then relaunch the stack. This ensures consistency between both regions and leverages the existing custom AMI.
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A company's web application, deployed on Amazon EC2 using a custom AMI and AWS CloudFormation, operates in the us-east-1 Region. The company faces an error indicating a non-existent AMI ID when attempting to replicate the deployment in the us-west-1 Region. What is the most operationally efficient solution to resolve this error?
A
Modify both regional AWS CloudFormation templates to utilize an AWS-provided AMI and redeploy the stacks.
B
Replicate the custom AMI to us-west-1, update the us-west-1 CloudFormation template with the new AMI ID, and redeploy the stack.
C
Construct a new custom AMI in us-west-1 and generate a corresponding CloudFormation template for deployment in that region.
D
Deploy the application in us-west-1 manually, bypassing AWS CloudFormation.