persist previous server.log after server restarts using log4j.xml

[Amit Scybs]

I am using JBOSS 4.3 and need to store the server.log after server get restarted. It does create a backup file daily but we dont need to override the existing server.log in a day if server gets restarted.changing append to true doesnt look like an option for me.

Jboss using this Appender from log4j.xml

   <appender name="FILE"
      class="org.jboss.logging.appender.DailyRollingFileAppender">
      <param name="File" 
         value="${jboss.server.home.dir}/log/server.log"/>
      <param name="Append" value="false"/>
	  <param name="MaxFileSize" value="400KB"/>
	  <param name="MaxBackupIndex" value="10"/>
      <param name="DatePattern" value="'.'yyyy-MM-dd"/>
      <layout class="com.cybersource.log4j.PatternLayout">
         <param name="ConversionPattern"
            value="%d{HH:mm:ss.SSS} %-5p %q '%t' [%c] %m%n"/>
      </layout>
   </appender>

[Jaikiran Pai]

Changing the Append=true should give you what you are looking for. Are you sure, you are changing this at the correct place? Remember that the jboss log4j.xml file has a commented out FILE appender too. So make sure you are changing this property in the uncommented FILE appender

[Amit Scybs]

I am changing it at the right place and can see the change getting reflected.

But because of some limitation I cant use the append property. I am wondering, this is what something so strange I am asking. This makes complete sense to be just rename (using standard backup filename format) the existing log file and create a new log file.

Any help will be greatly appreciated.

[Jaikiran Pai]

This makes complete sense to be just rename (using standard backup filename format) the existing log file and create a new log file.

That functionality isn't available in log4j. The only way, i know, of persisting the logs on restarts is to use the append property.

Since we are discussing about log4j and its feature, i am going to move this to our "Other open source projects" forum where ranchers with more experience on log4j might be able to help.