Lambda not writing to logs

This is a Bug Report

Description

With a simple python 3.6 lambda script, I am able to deploy to AWS and run my lambda function. The logging is not setup by serverless, and no logging takes place. In addition, when I insert logging into my code that lambda calls, the function appears to crash.

Further info: I am deploying using aws-profile: serverless deploy --aws-profile deployer

Perhaps I am overlooking some config option, but I’ve looked through the docs and the forum and haven’t been able to resolve the issue after much trial and error with the deployment process.

For bug reports:

• What went wrong?

Logging does not work from Lambda. There is a Log Group setup, but no Log Stream events are ever created.

• What did you expect should have happened?

Logging setup in AWS cloudwatch by serverless. Logs are created when logging is called from the Lambda function.

• What was the config you used?

Setup files are simplified & pasted below. The current initial lambda function does not do much, but logging is not working.

serverless.yml

service: cmd-demo

provider:
  name: aws
  runtime: python3.6
  role: arn:aws:iam::123456789123:role/service-role/demoDeployer

package:
  include:
    - handler.py
  exclude:
    - requirements.txt
    - serverless.yml

functions:
  test:
    handler: handler.test
    events:
      - http:
          path: cmd
          method: post

handler.py

import sys
sys.path.append("./lib")

def test(event,context):
  print("testing log")

• What stacktrace or error message from your provider did you see?

Getting different errors from serverless, while trying different solutions:

• The specified log group does not exist.
• An error occurred while provisioning your stack: RespondLogsSubscriptionFilterCloudWatchLog1 - The specified log group does not exist…
• An error occurred while provisioning your stack: RespondLogsSubscriptionFilterCloudWatchLog1 - The log group provided is reserved for the function logs of the destination function…
• Stack:arn:aws:cloudformation:us-east-1:[ARN_HERE] is in UPDATE_ROLLBACK_COMPLETE_CLEANUP_IN_PROGRESS state and can not be updated.
• No existing streams for the function

For feature proposals:

• What is the use case that should be solved. The more detail you describe this in the easier it is to understand for us.
• If there is additional config how would it look

N/A

Similar or dependent issues:

• #12345

Did not find a match

Additional Data

• Serverless Framework Version you’re using:

1.19.0

• Operating System:

macOS with AWS

• Stack Trace:

N/A. If there is one I can provide, please let me know how I can provide it. Thanks

• Provider Error messages:

See above “What stacktrace or error message from your provider did you see?”

[samsammurphy]

@Vadorequest. that’s good to hear. thanks. I will be following your advice.

[xta]

Closing, the Lambda role wasn’t setup with Cloudwatch IAM permissions. I’ve fixed that. Thanks