You can try our S3 app here: http://apps.splunk.com/app/1137/
Or you can mount your S3 as a filesystem and have a Universal Forwarder monitor it like a directory. There is a good writeup here: http://www.reedmurphy.net/blog/post/splunking-through-amazon-s3-access-logs
I suggest going the s3cmd route, its a little more feature rich than the Splunk app, but I have used both with success.
You can try our S3 app here: http://apps.splunk.com/app/1137/
Or you can mount your S3 as a filesystem and have a Universal Forwarder monitor it like a directory. There is a good writeup here: http://www.reedmurphy.net/blog/post/splunking-through-amazon-s3-access-logs
I suggest going the s3cmd route, its a little more feature rich than the Splunk app, but I have used both with success.