Which solution will meet these requirements without affecting the current deployment method?
Define an Amazon CloudWatch Events target, an AWS Lambda function, and a lifecycle hook attached to the Auto Scaling group. Configure CloudWatch Events to invoke Amazon SNS to send a message to the Systems Administrator group for remediation.
Define an AWS Lambda function and a lifecycle hook attached to the Auto Scaling group. Configure the lifecycle hook to invoke the Lambda function, which removes the entry of the private IP from the monitoring system upon instance termination.
Define an Amazon CloudWatch Events target, an AWS Lambda function, and a lifecycle hook attached to the Auto Scaling group. Configure CloudWatch Events to invoke the Lambda function, which removes the entry of the private IP from the monitoring system upon instance termination.
Define an AWS Lambda function that will run a script when instance termination occurs in an Auto Scaling group. The script will remove the entry of the private IP from the monitoring system.
Explanations:
This option uses Amazon CloudWatch Events to send notifications, but it does not directly address the issue of removing the private IP from the monitoring system during instance termination. The alerts would still be generated until the monitoring system updates.
While this option suggests using a lifecycle hook to invoke a Lambda function to remove the private IP, it does not detail how the monitoring system would be informed to stop checking a non-responsive instance that is being terminated, potentially still causing false alarms.
This option effectively uses a lifecycle hook to trigger a Lambda function that removes the entry of the private IP from the monitoring system upon instance termination. This approach directly prevents false alarms during deployments by ensuring that the monitoring system is updated immediately when instances are terminated.
This option implies running a script on termination, but it lacks integration with a lifecycle hook or any mechanism to ensure the monitoring system is updated, making it unclear how it would prevent false alarms during instance termination.
From what I’ve heard, the answer is:
Define an Amazon CloudWatch Events target, an AWS Lambda function, and a lifecycle hook attached to the Auto Scaling group. Configure CloudWatch Events to invoke the Lambda function, which removes the entry of the private IP from the monitoring system upon instance termination.