log4j.rootLogger=debug, R log4j.appender.R=org.apache.log4j.RollingFileAppender log4j.appender.R.File=/var/log/spectrum2/${jid}/backends/backend-${id}.log log4j.appender.R.MaxFileSize=10000KB # Keep one backup file log4j.appender.R.MaxBackupIndex=1 log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern=${pid}: %d %-5p %c: %m%n