Hello,
I am running logstash-5.4.1.
I am running multiple instances using --path.data option
But logs from these instances go to logstash-plain.log
At the moment I have export LS_OPTS="-DInstance_Name=${2}"$LS_OPTS
And in log4j2 file I have ${sys:Instance_Name}
what is created instead is ${sys:Instance_Name}-plain.log