Log4j properties files

This is a list of properties that you can modify in the impactserver.log4j.properties and impactgui.log4j.properties properties files to change the default logging behavior.

Note:

To change the file permissions size of the Impact server and GUI log files, set these properties in the both the $IMPACT_HOME/etc/impactgui.log4j.properties and $IMPACT_HOME/etc/impactserver.log4j.properties files:

appender.rolling.filePermissions=
appender.rollingerror.filePermissions=

Where <file permission string> is a 9 character POSIX compatible string (for example: "rwxrw-r--") as per https://docs.oracle.com/javase/8/docs/api/java/nio/file/attribute/PosixFilePermissions.html.

The first 3 characters represent the read (r), write (w), and execute (x) permission for the file owner.

The next 3 characters represent the read (r), write (w), and execute (x) permission for the file owner's group.

The last 3 characters represent the read (r), write (w), and execute (x) permission for everyone.

For example, to set log file permissions, use:

appender.rolling.filePermissions=rw-rw-rw-
appender.rollingerror.filePermissions=rw-rw-rw-

Table 1. Log4j properties
Property	Description
`property.filepath`	Specifies the path to the log file. Default is `$IMPACT_HOME/logs/`
`property.filename`	Specifies the filename of the log file. Default is `impactserver` for Impact server, and `impactgui` for Impact GUI server (namely, the filename without the `.log` suffix).
`filter.threshold.level`	Specifies the log level filter. All messages up to this severity level will be filtered for logging. Default value is `TRACE`, meaning severity of all levels up to and including level `TRACE`.
`appender.rolling.fileName`	Specifies the path and filename of the log file, using the filepath and filename properties above. Default is `$IMPACT_HOME/logs/impactserver.log` for Impact server, and `$IMPACT_HOME/logs/impactgui.log for Impact GUI serve`
`appender.rolling.layout.pattern`	Specifies the pattern in the logging. Default is `Date Time, log level, class name,` followed by the log message.
`appender.rolling.policies.size.size`	Specifies the maximum size of log files. Default is `10MB`.
`appender.rolling.strategy.max`	Specifies the maximum number of backup files. Default is `3`.
`appender.rollingerror.fileName`	Specifies the path and filename of the error log file, using the filepath and filename properties above. Default is `$IMPACT_HOME/logs/impactserver-errors.log` for Impact server, and `$IMPACT_HOME/logs/impactgui-errors.log` for Impact GUI server.
`appender.rollingerror.layout.pattern`	Specifies the pattern in the logging. Default is `Date Time, log level, class name,` and follow by the log message.
`appender.rollingerror.policies.size.size`	Specifies the maximum size of error log files. Default is `10MB`.
`appender.rollingerror.strategy.max`	Specifies the maximum number of backup files. Default is `3`.
`appender.rollingerror.filter.threshold.level`	Specifies the log level. Default is `ERROR`. (This should not be modified as the error log file is dedicated for ERROR logs only.)
`logger.rolling.level`	Specifies the log level for the `impactserver` log. Default is `INFO`.
`logger.rollingerror.level`	Specifies the log level for the `impactserver` error log. Default is `ERROR`.
`rootLogger.level`	This is the default root logging level. Default is `INFO`.