The Logfile Navigator, lnav for short, is a curses-based tool for viewing and analyzing log files. The value added by lnav over text viewers or editors is that it takes advantage of any semantic information that can be gleaned from the log file, such as timestamps and log levels. Using this extra semantic information, lnav can do things like interleaving messages from different files, generate histograms of messages over time, and provide hotkeys for navigating through the file. These features are meant to allow the user to quickly and efficiently focus on problems.
PHP Logging Class can be used to log activity to a database. It can add activity entries to a log database table. It logs the activity priority level and class, the remote user identifier (if logged), and its computer IP address. Optionally, it can send email about the activities being logged to a given email address. It can also display log entries as an HTML table.
loggerfs is a FUSE-based virtual file system that automatically parses log files and sends that information to a MySQL or PostgreSQL database. Existing log parsers usually run periodically and scan the entire file for changes. loggerfs takes a different approach by providing a virtual file system. Whenever data is appended to a virtual file by the logging daemon, the information is directly stored in the database. There is no need to poll the file and monitor for changes.
PIX Logging Architecture is a project allowing for correlation of Cisco PIX Firewall traffic, IDS, and informational logs. It parses Cisco PIX logs from syslog files, then pushes the parsed data to a database. It contains a Web-based front end for displaying and searching the Cisco PIX Firewall logs.
Geolizer is a patch for Webalizer that uses the GeoIP library to generate faster and more reliable geographic statistics than the default DNS suffix method. It is recommended that DNS reversal be disabled on your HTTP server for improved performance and more accurate statistics. It also supports country flag pictures, can be compiled under MinGW/MSYS, and features a human-readable transfer size display.
The mysqlard daemon collects MySQL performance data in a round robin database using rrdtool. rrdtool stores the data in a very compact way that will not expand over time, and it presents useful graphs by processing the data to enforce a certain data density. The main goal of the package is to help the database system administrator in tuning the system for maximum performance. The package also contains example graphing, cron, and PHP scripts.