INFO ${cassandra.logdir}/system.log ${cassandra.logdir}/system.log.%d{yyyy-MM-dd}.%i.zip 50MB 7 5GB %-5level [%thread] %date{ISO8601} %F:%L - %msg%n ${cassandra.logdir}/debug.log ${cassandra.logdir}/debug.log.%d{yyyy-MM-dd}.%i.zip 50MB 7 5GB %-5level [%thread] %date{ISO8601} %F:%L - %msg%n 1024 0 true INFO %-5level [%thread] %date{ISO8601} %F:%L - %msg%n