How Can I Find Logs for Failed Lambda Invocations in CloudWatch?

Look for specific keywords based on the language you are using. For example, with JavaScript, you might search for 'ERRORtInvoke Error', or for Python, try 'ERROR Exception'. This can help pinpoint the logs related to failures.

Make sure you're outputting your logs in JSON format and include a severity indicator. This allows you to filter the log group by the JSON field, giving you clickable links to the relevant log streams. You can also set up a metric to visualize this on a dashboard.

I personally use a free plan from lumigo.io which simplifies monitoring of Lambda failures significantly. If you're looking for an easier way to keep track of issues, it might be worth checking out!

As much as I love Lambda, they could definitely enhance their logging system. While there are some workarounds as others have mentioned, it should really be more user-friendly out of the box.

You can use CloudWatch Logs Insights to make this process way easier. If you're implementing structured logging, writing queries to filter out your error events can be super straightforward. The AWS documentation has some solid examples to get you started! Check it out [here](https://docs.aws.amazon.com/lambda/latest/dg/monitoring-cloudwatchlogs-view.html#querying-logs).