Starting with version 8.0, PingFederate uses Log4j2 to write log messages. This upgrade improves performance and allows real-time log level adjustments. If you have not modified the Log4j configuration file (log4j.xml) in an earlier version, PingFederate 8.0 starts using Log4j2 after the upgrade process.
If the configuration file for Log4j 2 (or Log4j) has been modified in the source installation, refer to one of the following sections for upgrade instructions.