Monitoring and Logging S3 Bucket

Hi, this is Charu from Classmethod. In today's blog post, I will share about one of the essential aspects of managing AWS S3 buckets: monitoring and logging. To achieve this, we will be using CloudTrail, AWS's logging service, to keep a watchful eye on our S3 buckets.

Let's get started!

Sign in to AWS Management Console:

  • Open your web browser and go to the AWS Management Console.
  • Sign in with your AWS account credentials.
  • Open CloudTrail:

  • In the AWS Management Console, find and select CloudTrail from the services list or use the search bar to find it.
  • Create a Trail:

  • In the CloudTrail dashboard, click on Trails in the left sidebar.
  • Click on the Create trail button.
  • Configure Trail Details:

  • Enter a name for your trail.
  • You will need to specify an S3 bucket where CloudTrail will store the log files. You can either create a new bucket or use an existing one.
  • If you're creating a new bucket, enter a unique name.
  • If you're using an existing bucket, select it from the list.
  • Under Management Events, make sure Read/Write events is set properly if you're only interested in recording write operations like PUT.
  • Click on Data Events checkbox. Under Data Events, you can specifically log S3 bucket-level actions.
  • Choose the Data event type as S3 and select your log template. In my case, I selected Log All Events.
  • Click on next. Review your settings and click on Create.
  • Verification:

    Once you've completed the setup, it's crucial to verify that everything is working as expected:

  • Access the CloudTrail dashboard and ensure that your trail is active.
  • Navigate to the S3 bucket where you configured server access logging.
  • Check if access logs are being generated in the designated bucket.
  • Verify that CloudTrail is capturing relevant S3 API events by reviewing the CloudTrail logs.
  • Advance things you can try next:

    With CloudTrail and S3 logging in place, you can now analyze logs and monitor activity within your S3 buckets:

  • Use the AWS Management Console or AWS CLI to access CloudTrail logs stored in the designated S3 bucket.
  • Leverage CloudTrail insights to track S3 API calls, identify unauthorized access attempts, and detect anomalies.
  • Set up CloudWatch Alarms to receive notifications for specific S3-related events, such as bucket deletions or changes to bucket policies.
  • Regularly review CloudTrail and S3 access logs to ensure compliance with security best practices and regulatory requirements.
  • Conclusion:

    Congratulations! You've successfully configured monitoring and logging for your AWS S3 buckets using CloudTrail. By implementing these best practices, you can enhance the security, compliance, and operational visibility of your S3 infrastructure.

    Thank you for reading!

    Happy Learning:)