CpuUtilization target for AWS CDK QueueProcessingFargateService

Question

Dear colleagues, 
I've created SQS processing service using `QueueProcessingFargateService`.

I can adjust scaling using `scalingSteps?` based on information from SQS `ApproximateNumberOfMessagesVisible`
However, according to what I can see CpuUtilization target is set to 50% by default. 
My processing is very CPU consuming and it is totally OK to run it on 100% load.

Unfortunately I can't find the way for changing CpuUtilization target from 50% to 100%.

This cause permanent scale up to maxScalingCapacity.
Would appreciate any ideas.

Answer

For some reason, QueueProcessingFargateService sets CPU scaling targets as well as queue processing targets.

I had the same situation and the solution was to delete the corresponding alarms in CloudWatch manually. Go to CloudWatch -> All Alarms and find the one for your service.

There is a bug report for this in GitHub: https://github.com/aws/aws-cdk/issues/20706 so this will hopefully be fixed soon.

CpuUtilization target for AWS CDK QueueProcessingFargateService

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