how to change configuration file of log4j2 at runtime?

Question

i would like to turn of my debug statements at runtime in log4j2. According to the documentation we can do this. I kept my log4j.xml file in default package and then made jar out of it. Since I cannot modify jar i specified xml file using Dlog4j.configuration=/path/to/log4j.xml. However,this is not working. I Tried everything using file:// uri to all the combination, still it is not picking the xml.

Answer 1

The system property to specify the config file location is different from log4j-1.x. In log4j2, the property is "log4j.configurationFile".

So if the config is in a jar file you would use:

-Dlog4j.configurationFile=jar:file:///C:/path/to/jarfile.jar!/path/to/log4j2.xml

(I assume you have the monitorInterval set in your configuration as documented here: http://logging.apache.org/log4j/2.x/manual/configuration.html#AutomaticReconfiguration)