Gossip presently doesn’t allow you to set adhoc logging configuration via system properties, but as you have discovered uses a configurable properties file to allow a profile to be configured to adjust your logging as needed. I suppose that feature could be added, either to gossip proper to as a customized source in the maven implementation.
For "backwards compatibility" I think gossip needs to add an option for a relative timestamp (since creation of the loggers) and maybe an easy way to set single log levels from the command line. Likely easy enough to add, the basic renderer is here: https://github.com/jdillon/gossip/blob/master/gossip-bootstrap/src/main/java/com/planet57/gossip/render/PatternRenderer.java Though unsure how its “backwards compatible”. If you want to use features of another slf4j impl you are still free to switch it back to slf4j-simple or something else and get a lot more control over logging with your favorite backend. —jason
