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in AWS by (19.1k points)

I'm trying to set up a Lambda function that will process a file when it's uploaded to an S3 bucket. I need a way to see the output of console.log when I upload a file, but I can't figure out how to link my Lambda function to CloudWatch.

I figured about by looking at the context object that my log group is /aws/lambda/wavToMp3 and the log stream is 2016/05/23/[$LATEST]hex_code_redacted. So I created that group and stream in CloudWatch, yet nothing is being logged to it.

1 Answer

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by (44.4k points)

I guess the problem is the IAM role permissions. The lambda function should be given permission to access CloudWatch. So, include the below actions in your Role:


    "Statement": [


            "Action": [





            "Effect": "Allow",

            "Resource": "arn:aws:logs:*:*:*"




Also, after updating the Role do a test once to refresh your function settings or it might not work. 

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