There are several environment variables that can be set in order to influence how Log4cxx works. They are summarized in the following table:
| Environment Variable | Usage |
|---|---|
| LOG4CXX_DEBUG | Set to the value ‘true’ to enable internal debugging of Log4cxx. All output goes to stderr. This can be useful to determine why a configuration file is not loading |
| log4j.configuratorClass | Used to determine what class to use to configure the logging system |
| LOG4CXX_CONFIGURATOR_CLASS | Used to determine what class to use to configure the logging system. Takes precedence over log4j.configuratorClass |
| log4j.configuration | Set the file to load to configure the logging system |
| LOG4CXX_CONFIGURATION | Set the file to load to configure the logging system. Takes precedence over log4j.configuration |
| LOG4CXX_CONFIGURATION_WATCH_SECONDS | Set how often the configuration file should be checked for changes |