Additionally, you can use grep, sed, and AWK tools to parse the log files’ entries. It contains all log information of the HTTP requests to the server.Įntries in the access log take the format of source address, date and time of access, HTTP method, resource requested (static files such as images, CSS, html, js, and more), status code, HTTP header, and the PID.Īpache Tomcat uses a standardized format for its logging entries, which is helpful for readability across Tomcat versions and devices. The access log has a similar name as the localhost log but adds the access in the filename.

log extension, and you’ll find it in the same directory as the catalina.log file. The localhost log is another default log file in the logs directory of the Apache Tomcat used to store the HTTP transactions between the client and the Apache tomcat server. Some log information in the catalina.log file includes uncaught exceptions in the and thread dumps requested by system signal. It is good not to modify the values in the log file as it might tamper with the time of the log and provide incorrect information to log analyzers.Īn example catalina.log contents are as shown:

It includes log information such as the startup and shutdown of the Tomcat server, fail records for various subsystems, and even the deployment of applications on the server.Įach message in the catalina.log file takes the format of the date and time of the event, the debug level, the log source, the class responsible for the event, and the command. The Catalina log file contains the comprehensive Apache Tomcat logs.

Apache tomcat 8 for windows