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From guowei <gerald...@yahoo.com.sg>
Subject log4j.properties loaded twice, tomcat files rolling failed
Date Fri, 11 Jul 2014 03:42:43 GMT
Dear all,

Tomcat Version: 7_0_50
Log4j: log4j-1.2.17

I am using log4j for tomcat internal logging and also application logging.

I followed Tomcat's instruction to configure log4j rolling and I also have configured my application
to have its own log4j rolling.

log4j.jar is in both Tomcat's lib and web application's lib, each have their respective log4j.properties

I enabled -Dlog4j.debug and I can see the sequence of the events

1) log4j.properties for the tomcat gets loaded by Tomcat's StandardClassLoader
2) the same log4j.properties for tomcat gets loaded by the Tomcat's WebappClassLoader
3) application's log4j.properties is loaded

Between 1) and 2) I can see the tomcat files being rolled ( I intentionally set DailyRollingAppender
to yyyy-MM-dd-HH-mm and DEBUG level to make sure lots of things gets logged). Rolling was
working well. Files were rolled on the minute

However, when step 2) kicks in, the rolling of tomcat files failed. 
I reckon that the moment the the same log4j.properties is loaded, there is a conflict since
the same appenders are referred twice.
I am not certain has it anything to do with the tomcat's log4j configuration or appliation's
log4j configuration, or how my tomcat is configured. 

The Application's log files are rolled correctly.

Would appreciate if anyone can enlighten me.

-----Dlog4j.debug output----
log4j: Trying to find [log4j.xml] using context classloader org.apache.catalina.loader.StandardClassLoader@1529d183.
log4j: Trying to find [log4j.xml] using org.apache.catalina.loader.StandardClassLoader@1529d183
class loader.
log4j: Trying to find [log4j.xml] using ClassLoader.getSystemResource().
log4j: Trying to find [log4j.properties] using context classloader org.apache.catalina.loader.StandardClassLoader@1529d183.
log4j: Using URL [file:/C:\Apache\Tomcat/lib/log4j.properties] for automatic log4j configuration.
log4j: Reading configuration from URL file:/C:\Apache\Tomcat/lib/log4j.properties
log4j: Parsing for [root] with value=[WARN,CATALINA,LOCALHOST,MANAGER,HOST-MANAGER,stdout,stderr].
log4j: Level token is [WARN].
log4j: Category root set to WARN
log4j: Parsing appender named "CATALINA".
log4j: Parsing layout options for "CATALINA".
log4j: Setting property [conversionPattern] to [%d [%t] %-5p %c- %m%n].
log4j: End of parsing for "CATALINA".
log4j: Setting property [encoding] to [UTF-8].
log4j: Setting property [datePattern] to ['.'yyyy-MM-dd-HH-mm'.log'].
log4j: Setting property [file] to [C:\Apache\Tomcat/logs/catalina].
log4j: Setting property [append] to [true].
log4j: setFile called: C:\Apache\Tomcat/logs/catalina, true
log4j: setFile ended
log4j: Appender [CATALINA] to be rolled on top of every minute.
log4j: Parsed "CATALINA" options.
log4j: Handling log4j.additivity.org.apache.catalina.core.ContainerBase.[Catalina].[localhost]=[null]
log4j: Finished configuring.
.
.
#Parsing for rest of the file
.
.
log4j: Parsing for [org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[host-manager]]
with value=[WARN, HOST-MANAGER].
log4j: Level token is [WARN].
log4j: Category org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[host-manager]
set to WARN
log4j: Parsing appender named "HOST-MANAGER".


delegate: false
  repositories:
    /WEB-INF/classes/
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader@6c79fa4f
.
log4j: Trying to find [log4j.xml] using WebappClassLoader
  context: /mya
  delegate: false
  repositories:
    /WEB-INF/classes/
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader@6c79fa4f
 class loader.
log4j: Trying to find [log4j.xml] using ClassLoader.getSystemResource().
log4j: Trying to find [log4j.properties] using context classloader WebappClassLoader
  context: /mya
  delegate: false
  repositories:
    /WEB-INF/classes/
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader@6c79fa4f
.
log4j: Using URL [file://C:\Apache\Tomcat/lib/log4j.properties] for automatic log4j configuration.

log4j: Using URL [file:/C:\Apache\Tomcat/lib/log4j.properties] for automatic log4j configuration.
log4j: log4j: Parsing for [root] with value=[WARN,CATALINA,LOCALHOST,MANAGER,HOST-MANAGER,stdout,stderr].
log4j: Level token is [WARN].
Reading configuration from URL file:/C:\Apache\Tomcat/lib/log4j.properties

log4j: Category root set to WARN
log4j: Parsing appender named "CATALINA".
log4j: Parsing layout options for "CATALINA".
log4j: Setting property [conversionPattern] to [%d [%t] %-5p %c- %m%n].
log4j: End of parsing for "CATALINA".
log4j: Setting property [encoding] to [UTF-8].
log4j: Setting property [datePattern] to ['.'yyyy-MM-dd-HH-mm'.log'].
log4j: Setting property [file] to [C:\Apache\Tomcat/logs/catalina].
log4j: Setting property [append] to [true].
log4j: setFile called: C:\Apache\Tomcat/logs/catalina, true
log4j: setFile ended
log4j: Appender [CATALINA] to be rolled on top of every minute.
log4j: Parsed "CATALINA" options.
log4j: Handling log4j.additivity.org.apache.catalina.core.ContainerBase.[Catalina].[localhost]=[null]
log4j: Finished configuring.
.
.
#Parsing for rest of the appenders
.
.
log4j: Parsing for [org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[host-manager]]
with value=[WARN, HOST-MANAGER].
log4j: Level token is [WARN].
log4j: Category org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[host-manager]
set to WARN
log4j: Parsing appender named "HOST-MANAGER".
.
.
.
log4j: Reading configuration from URL file:/C:\Apache\Tomcat/webapps/mya/WEB-INF/classes/properties/log4j.properties

log4j: Parsing for [org] with value=[INFO, DA, stdout].
log4j: Level token is [INFO].
log4j: Category org set to INFO
log4j: Parsing appender named "DA".
log4j: Parsing layout options for "DA".
log4j: Setting property [conversionPattern] to [%-5p [%t] [%X{userID}] %d{dd-MM-yyyy HH:mm:ss:SSS}
[%30c{1}] - %m  %n].
log4j: End of parsing for "DA".
log4j: Setting property [append] to [true].
log4j: Setting property [file] to [C:\Apache\Tomcat/logs/mya.log].
log4j: Setting property [datePattern] to ['.'yyyy-MM-dd-HH].
log4j: setFile called: C:\Apache\Tomcat/logs/mya.log, true
log4j: setFile ended
log4j: Appender [DA] to be rolled on top of every hour.
log4j: Parsed "DA" options.
log4j: Parsing appender named "stdout".
log4j: Parsing layout options for "stdout".
log4j: Setting property [conversionPattern] to [%-5p [%t] [%X{userID}] %d{dd-MM-yyyy HH:mm:ss:SSS}
[%30c{1}] - %m  %n].
log4j: End of parsing for "stdout".
log4j: Parsed "stdout" options.
log4j: Handling log4j.additivity.org=[null]
.
.
.
#parsing of the application's log4j
.
.
.
log4j:ERROR Failed to rename [C:\Apache\Tomcat/logs/catalina] to [C:\Apache\Tomcat/logs/catalina.2014-07-10-17-09-20.log].
log4j:ERROR Failed to rename [C:\Apache\Tomcat/logs/localhost] to [C:\Apache\Tomcat/logs/localhost.2014-07-10-17-09-20.log].
log4j:ERROR Failed to rename [C:\Apache\Tomcat/logs/manager] to [C:\Apache\Tomcat/logs/manager.2014-07-10-17-09-20.log].
log4j:ERROR Failed to rename [C:\Apache\Tomcat/logs/host-manager] to [C:\Apache\Tomcat/logs/host-manager.2014-07-10-17-09-20.log].
log4j:ERROR Failed to rename [C:\Apache\Tomcat/logs/stdout] to [C:\Apache\Tomcat/logs/stdout.2014-07-10-17-09-20.log].
log4j:ERROR Failed to rename [C:\Apache\Tomcat/logs/stderr] to [C:\Apache\Tomcat/logs/stderr.2014-07-10-17-09-20.log].
----------------------------------


----tomcat log4j properties----
log4j.rootLogger=INFO,CATALINA,LOCALHOST,MANAGER,HOST-MANAGER,stdout,stderr

# Define all the appenders
log4j.appender.CATALINA=org.apache.log4j.DailyRollingFileAppender
log4j.appender.CATALINA.File=${catalina.base}/logs/catalina
log4j.appender.CATALINA.Append=true
log4j.appender.CATALINA.Encoding=UTF-8
log4j.appender.CATALINA.DatePattern = '.'yyyy-MM-dd-HH-mm'.log'
log4j.appender.CATALINA.layout = org.apache.log4j.PatternLayout
log4j.appender.CATALINA.layout.ConversionPattern = %d [%t] %-5p %c- %m%n

.
.
.
log4j.appender.stdout=org.apache.log4j.DailyRollingFileAppender
log4j.appender.stdout.File=${catalina.base}/logs/stdout
log4j.appender.stdout.Append=true
log4j.appender.stdout.Encoding=UTF-8
log4j.appender.stdout.DatePattern = '.'yyyy-MM-dd-HH-mm'.log'
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern = %d [%t] %-5p %c- %m%n


# Configure which loggers log to which appenders
log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost]=DEBUG, CATALINA
log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[\manager]=DEBUG,
MANAGER
log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[\host-manager]=DEBUG,
HOST-MANAGER

--------end tomcat log4j properties----

---my application's log4j---
log4j.log.dir=${catalina.home}/logs

#Application Log
log4j.logger.ou.org.to=ALL, DA, stdout
log4j.logger.aud=ALL,AudAppender, stdout
log4j.logger.ou.org.to.osf.core.aop.MethodTrace=ALL, MethodTraceAppender, stdout
log4j.logger.ou.org.to.osf.core.aop.PerfMonitor=ALL, PerfAppender, stdout

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-5p [%t] [%X{userID}] %d{dd-MM-yyyy HH:mm:ss:SSS}
[%30c{1}] - %m  %n

log4j.appender.DA=org.apache.log4j.DailyRollingFileAppender
log4j.appender.DA.file=${log4j.log.dir}/mya.log
log4j.appender.DA.layout=org.apache.log4j.PatternLayout
log4j.appender.DA.layout.ConversionPattern=%-5p [%t] [%X{userID}] %d{dd-MM-yyyy HH:mm:ss:SSS}
[%30c{1}] - %m  %n
log4j.appender.DA.DatePattern='.'yyyy-MM-dd-HH
log4j.appender.DA.append=true
--------------------------------------

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