How to get GELFJ appender work in log4j?
I need to get my Java application writing logging to a Graylog2 server. The application uses a log4j configuration. Several things I have tried to get the logging writing to the Graylog2 server, the things I got working was sending a test message directly to the server, as shown here (first example). Yet, when I write an appender and attach it to the root logger, I always get this error message the first time a log event is to be fired: log4j:ERROR Could not send GELF message Nothing then happens on the Graylog2 server side. The appender I try to get working: <appender name="graylog2" class=