[illumin8]

I've had much better results from using Syslog-NG along with php-Syslog-NG.

Syslog-NG can already split your log files into subdirectories with the hostname of each server, but it also has the capability of redirecting messages to named pipes. This is great because you can pipe it into mysql and stuff all of your log messages in a database. Combine with a php front-end and now your developers and sysadmins can search logs intelligently across multiple servers, and get really fine-grained on their search strings. Want to tail the output from all Tomcat servers in your app server pool looking for a specific string? Go right ahead.