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Answer: The Lambda function's role does not include permissions to create CloudWatch Logs items.
Lambda execution role needs logs:CreateLogGroup, logs:CreateLogStream, logs:PutLogEvents to write to CloudWatch Logs. If missing, no logs even if invoked. Other causes possible but permission is common. Logs are enabled by default.
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A Lambda function was deployed 15 minutes ago and invoked many times, but no log messages appear in CloudWatch Logs. What is one cause?
A
Developers did not enable log messages for this Lambda function.
B
The Lambda function's role does not include permissions to create CloudWatch Logs items.
C
The Lambda function raises an exception before the first log statement.
D
Lambda creates local log files that must be shipped to CloudWatch Logs first.