zookpers log4j + Advanced zookeeper-log4j + how to get trace logs

Question

hi allunder /var/log/zookeeper , we have the zookeeper logs , as the following-rw-r--r-- 1 zookeeper hadoop 104857712 Jul  5 15:54 zookeeper-zookeeper-server-master.sys87.com.log.1-rw-r--r-- 1 zookeeper hadoop       177 Jul 16 11:57 zookeeper-zookeeper-server-master.sys87.com.out-rw-r--r-- 1 zookeeper hadoop  66358998 Jul 16 23:15 zookeeper-zookeeper-server-master.sys87.com.logthe problem is that we get only the INFO severity from the logs!and when we set the TRCE severity , and restart the zookeeper service , then its not change the zookeeper log content to trace mode,can we get example of log4j for zookeeper ?we suspect that our log4j isn't configured properly

jsensharma · Accepted Answer

@Michael BronsonInside the Ambari UI --> Zookeerper --> Configs --> Advanced --> "Advanced zookeeper-log4j" you will find the zookeeper-log4j template.Inside the template try this:Change-1).  Change the rootLogger line and enable 'TRACEFILE' appenderComment the line:#log4j.rootLogger=INFO, CONSOLE, ROLLINGFILEAnd then uncomment the following line:log4j.rootLogger=TRACE, CONSOLE, ROLLINGFILE, TRACEFILEChange-2). Now inside the same template alter the line:FROM log4j.appender.TRACEFILE.File=zookeeper_trace.logTOlog4j.appender.TRACEFILE.File={{zk_log_dir}}/zookeeper_trace.logNow restart Zookeeper.Then check the log "zookeeper_trace.log"# tail -f /var/log/zookeeper/zookeeper_trace.log.

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