JB, LogManager comes with pax-logging-service in org.apache.log4j.* package which was for log4j1. If you check pax-logging-log4j bundle, LogManager comes with this jar in org.apache.logging.log4j.* package.
I also tried to install pax-logging-log4j bundle as system bundle(startup.properties). But bad luck -- View this message in context: http://karaf.922171.n3.nabble.com/Were-you-guys-still-interested-in-adopting-Log4j2-for-your-logging-system-tp4033296p4038327.html Sent from the Karaf - Dev mailing list archive at Nabble.com.
