AWS Certified DevOps Engineer - Professional
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A DevOps engineer is deploying a new version of an application running on Amazon EC2 instances behind an Application Load Balancer (ALB) using AWS CodeDeploy. The deployment process fails during the AllowTraffic lifecycle event, and no specific cause is mentioned in the deployment logs. What could be a potential reason for this failure?
A
The appspec.yml file contains an invalid script that runs in the AllowTraffic lifecycle hook.
B
The user who initiated the deployment does not have the necessary permissions to interact with the ALB.
C
The health checks specified for the ALB target group are misconfigured.
D
The CodeDeploy agent was not installed in the EC2 instances that are part of the ALB target group.