cat >/opt/zookeeper/current/conf/log4j.properties <<EOL
        zookeeper.root.logger=CONSOLE,ROLLINGFILE
        zookeeper.console.threshold=INFO
        zookeeper.log.file=zookeeper.log
        zookeeper.log.threshold=INFO
        zookeeper.tracelog.file=zookeeper_trace.log
        log4j.rootLogger=${zookeeper.root.logger}
        log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
        log4j.appender.CONSOLE.Threshold=${zookeeper.console.threshold}
        log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
        log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} [myid:%X{myid}] - %-5p [%t:%C{1}@%L] - %m%n
        log4j.appender.ROLLINGFILE=org.apache.log4j.RollingFileAppender
        log4j.appender.ROLLINGFILE.Threshold=${zookeeper.log.threshold}
        log4j.appender.ROLLINGFILE.File=${zookeeper.log.dir}/${zookeeper.log.file}
        log4j.appender.ROLLINGFILE.MaxFileSize=10MB
        log4j.appender.ROLLINGFILE.MaxBackupIndex=10
        log4j.appender.ROLLINGFILE.layout=org.apache.log4j.PatternLayout
        log4j.appender.ROLLINGFILE.layout.ConversionPattern=%d{ISO8601} [myid:%X{myid}] - %-5p [%t:%C{1}@%L] - %m%n
        log4j.appender.TRACEFILE=org.apache.log4j.FileAppender
        log4j.appender.TRACEFILE.Threshold=TRACE
        log4j.appender.TRACEFILE.File=${zookeeper.log.dir}/${zookeeper.tracelog.file}
        log4j.appender.TRACEFILE.layout=org.apache.log4j.PatternLayout
        log4j.appender.TRACEFILE.layout.ConversionPattern=%d{ISO8601} [myid:%X{myid}] - %-5p [%t:%C{1}@%L][%x] - %m%n
        zookeeper.log.dir=/var/opt/zookeeper/log
        EOL