Which language is your AWS Lambda using?

• Node.js
• Python

Logging in AWS Lambda running Node.js

Collect logs from your AWS Lambda running Node.js code.

1. Install

Build and upload stockstory/logtail-lambda-extension Lambda layer to your AWS:

Take care to publish the layer in the region your Lambda function reside in. If that's not your default region, you can change it by adding --region <region-name> parameter to the command above.

2. Add layer to your Lambda functions

In your AWS Console, add the logtail-lambda-extension layer to the Node.js Lambda functions you want to collect logs from.

This can be done in Lambda → Functions → your function → Layers section.
For details, check AWS docs.

3. Configure your source token

In your AWS Console, set up LOGTAIL_TOKEN and LOGTAIL_HTTP_API_URL environment variables for the AWS Lambda functions like this:

LOGTAIL_TOKEN:        $SOURCE_TOKEN
LOGTAIL_HTTP_API_URL: https://$INGESTING_HOST/

This can be done in Lambda → Functions → your function → Configuration → Environment variables. For details, check AWS docs.

4. Start logging 🎉

Use the logger as usual:

You should see your logs in Better Stack → Logs & traces.

Logging in AWS Lambda running Python

Collect logs from your AWS Lambda running Python code.

1. Install

Install Logtail Python and AWS Lambda Powertools PyPI packages:

2. Setup

Set up AWS Lambda logger with Better Stack:

3. Start logging 🎉

Use the logger as usual:

You should see your logs in Better Stack → Live tail.

Need help?

Please let us know at hello@betterstack.com.
We're happy to help! 🙏

Additional information

Interested in learning more about enriching log context and using formatters?
Head over to official AWS Lambda Powertools documentation.