How to disable default log messages from lambda in python

Question

I have an AWS Lambda function written in python, and i need only the messages I log in CloudWatch Logs. I have tried the example given in watchtower, but it still didn't work.

START RequestId: d0ba05dc-8506-11e8-82ab-afe2adba36e5 Version: $LATEST
(randomiser) Hello from Lambda
END RequestId: d0ba05dc-8506-11e8-82ab-afe2adba36e5
REPORT RequestId: d0ba05dc-8506-11e8-82ab-afe2adba36e5
Duration: 0.44 ms Billed Duration: 100 ms Memory Size: 128 MB   Max Memory Used: 21 MB*

From the above I only need (randomiser) Hello from Lambda to be logged in CloudWatch, without the START, END and REPORT lines.

Answer 1

If you have logs enabled, you are always going to get the default logs. No way you can disable them.

However there might be cases where you want one specific Lambda function to not send logs at all. You can solve this by creating a new role specifically for that Lambda function, and not have the logging permission there.

FWIW, if you need to toggle between logging and no logging frequently, you can have a policy file as the following.

{ "Version": "2012-10-17", "Statement": [ { "Effect": "Deny", "Action": [ "logs:CreateLogGroup", "logs:CreateLogStream", "logs:PutLogEvents" ], "Resource": [ "arn:aws:logs:*:*:*" ] } ] }

and change the "Deny" to "Allow" when you require logging.