In this article, I am going to show how to create a CloudTrail trail that tracks the activity of an S3 bucket. We will then create a CloudWatch log group to search through the activity logs that describe the API actions on that S3 bucket. Additionally, we will create a CloudWatch metric filter and CloudWatch alarm to notify us whenever there are uploads or downloads of an S3 object on that bucket.
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Let’s get started!
Objectives:
1. Create S3 bucket and Upload Objects
2. Create a CloudTrail Trail
3. Create and Configure a CloudWatch Log Group with Your CloudTrail Trail
4. Create and Configure a CloudWatch Alarm with Your CloudTrail Trail
Pre-requisites:
- AWS user account with admin access, not a root account.
Resources Used:
Steps for implementation to this project:
1. Create S3 bucket and Upload Objects
- Create a simple s3 bucket -
mybucket-123456 - Upload a file -
000-employee-1
2. Create a CloudTrail Trail
- Create a CloudTrail Trail -
s3-bucket-123456-trailfor theData Eventsin S3 bucket
3. Create and Configure a CloudWatch Log Group with Your CloudTrail Trail
- setup CloudWatch Logs
- Configure a CloudWatch Log Group with Your CloudTrail Trail
1. upload a new file into s3 bucket
2. view Cloudwatch log events
3. Create filter
4. Test Pattern Results
- Found 6 matches out of 11 event(s) in the sample log.
- Next
5. Assign Filter
Next
Summary
- Create metric filter
4. Create and Configure a CloudWatch Alarm with Your CloudTrail Trail
- Create Alarm
- confirm your email
- Confirm Subscription
- Next
- Click Next
- Click Create Alarm
Cleanup
- Delete S3 bucket
- Delete CloudTrail
- Delete Cloudwatch
What we have done so far
- we have created and configured a CloudTrail trail and a CloudWatch Logs log stream in order to set up monitoring and access alerts for an S3 bucket.
- Specifically, we have created the trail for monitoring access to the S3 bucket, the CloudWatch Logs log stream to allow searching and filtering of the logs, and then a CloudWatch metric filter and alarm on that metric filter to generate an alert whenever there is any access to an S3 bucket.
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