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https://issues.apache.org/jira/browse/ZOOKEEPER-3199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16697683#comment-16697683
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Ankit Kothana commented on ZOOKEEPER-3199:
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Took reference of https://issues.apache.org/jira/browse/ZOOKEEPER-2170 and
updated zkEnv.sh to change root level of logging to DEBUG, but it didn't
resolved the issue.
zookeeper.log
{quote}ZooKeeper JMX enabled by default
Using config: /usr/local/share/zookeeper/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED
ZooKeeper JMX enabled by default
Using config: /usr/local/share/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
{quote}
log4j.properties
{quote}# Define some default values that can be overridden by system properties
zookeeper.root.logger=DEBUG, CONSOLE
zookeeper.console.threshold=DEBUG
zookeeper.log.dir=/var/log/zookeeper
zookeeper.log.file=zookeeper.log
zookeeper.log.threshold=DEBUG
zookeeper.tracelog.dir=.
zookeeper.tracelog.file=zookeeper_trace.log
#
# ZooKeeper Logging Configuration
#
# Format is " (, )+
# DEFAULT: console appender only
log4j.rootLogger=${zookeeper.root.logger}
# Example with rolling log file
#log4j.rootLogger=DEBUG, CONSOLE, ROLLINGFILE
# Example with rolling log file and tracing
#log4j.rootLogger=TRACE, CONSOLE, ROLLINGFILE, TRACEFILE
#
# Log INFO level and above messages to the console
#
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=${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
#
# Add ROLLINGFILE to rootLogger to get log file output
# Log DEBUG level and above messages to a log file
log4j.appender.ROLLINGFILE=org.apache.log4j.RollingFileAppender
log4j.appender.ROLLINGFILE.Threshold=${zookeeper.log.threshold}
log4j.appender.ROLLINGFILE.File=${zookeeper.log.dir}/${zookeeper.log.file}
# Max log file size of 10MB
log4j.appender.ROLLINGFILE.MaxFileSize=10MB
# uncomment the next line to limit number of backup files
#log4j.appender.ROLLINGFILE.MaxBackupIndex=10
log4j.appender.ROLLINGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.ROLLINGFILE.layout.ConversionPattern=%d\{ISO8601}
[myid:%X\{myid}] - %-5p [%t:%C\{1}@%L] - %m%n
#
# Add TRACEFILE to rootLogger to get log file output
# Log DEBUG level and above messages to a log file
log4j.appender.TRACEFILE=org.apache.log4j.FileAppender
log4j.appender.TRACEFILE.Threshold=TRACE
log4j.appender.TRACEFILE.File=${zookeeper.tracelog.dir}/${zookeeper.tracelog.file}
log4j.appender.TRACEFILE.layout=org.apache.log4j.PatternLayout
### Notice we are including log4j's NDC here (%x)
log4j.appender.TRACEFILE.layout.ConversionPattern=%d\{ISO8601} [myid:%X\{myid}]
- %-5p [%t:%C\{1}@%L][%x] - %m%n
{quote}
> Unable to produce verbose logs of Zookeeper
> ---
>
> Key: ZOOKEEPER-3199
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3199
> Project: ZooKeeper
> Issue Type: Bug
>Reporter: Ankit Kothana
>Priority: Major
>
> We are using Zookeeper in our system along with Apache Kafka. However,
> Zookeeper is not producing any relevant logs (even with lower log levels
> specified in log4j.properties) in the log file that could help us in
> identifying what is currently going on in ZK or Kafka cluster.
> Please let us know how to retrieve proper logs from ZK cluster.
> Version of ZK : 3.x
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