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This page contains server settings for logging. Logging settings include Log4J Loggers and Log4J Appenders . Loggers filter the log messages to Appenders, while Appenders filter the messages for the second time before writing them to the log files.
Log4J Loggers contain the value's Name, Log Level and Additivity. The Log level list contains TRACE, INFO, DEBUG, WARN, ERROR, FATAL and OFF from which any one can be selected. Once you select a Log Level, only the messages at that level and below will be logged. For example, if you select Log Level ERROR, then all ERROR and FATAL messages will be logged or rather passed on to the Appender. Switching on Additivity allows to inherit all the Appenders of the parent Logger.
Log4J Appenders include values for the Appender Name, Log level, known as Threshold in this case, Log Pattern and Log File.
The Threshold list is the same as the Log Level in Loggers, in name and action. The Log Pattern allows you to edit the format or the layout in which the logs are created. You can have a look at the log4j PatternLayout page to learn the meanings of the values that are used in the log pattern. Finally you can change the location of the log file with the Log File option.
Check this if you want any changes you make to the logging configuration to persist even after a server restart. If not checked, logging will be configured with the default settings.
Note that by using the Global Log4J Configuration options, you can set the Log Level and Log Pattern of Log4J Appenders and Loggers to the same value at the same time.
Values for the above three settings can be edited/changed and updated by using the Update button.
Figure 1: Logging Management