On Apr 21, 2009, at 8:52 AM, Villemos, Gert wrote:
I’m trying to understand how to setup logging using log4j with
Geronimo. Found the article http://cwiki.apache.org/GMOxDOC21/configuring-application-specific-logging-with-log4j.html
but I miss an explanation of the concepts behind the logging.
Likely the problem I have with implementing the logging following
the article are due to this missing understanding. Before bothering
anyone with my faulty source code I would therefore like to know
whether I have understood the concepts correctly;
1. Each deployed WAR can maintain separate log file(s), by including
a ‘log4j.properties’ file in the WAR and a definition of where to
unpack it in the ‘geronimo-web.xml’ deployment file.
You also need a geronimo plan for the war with an
ApplicationLog4jConfigurationGBean gbean to tell log4j about the
special configuration for the war's logging.
2. The ‘{GERONIMO_HOME}/var/log/server-log4j.properties’ file
defines the log4j setup for the Geronimo server. When deploying WARs
with their own log4j.properties files I do NOT have to change this
file to make them work, the GBean ‘DirectoryLog4jConfiguration’ will
manage this for me.
yes. If you don't do anything your app's logging will also end up in
this server log file. You only need to follow the doc instructions if
you want your app's logging to go to a separate file from the normal
server logging.
3. The log files can be viewed from the administration console
through the ‘server log’ portlet, and the ‘Filter Criteria’ drop
down box will contain each registered log file.
I don't know if you can look at other log files using the console log
viewer.
hope this helps
david jencks
Thanks,
Gert.
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