[LOG4J2-3126] file permissions doesn't work on RollingRandomAccessFile appender

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.11.1
• Component/s: Appenders
• Assignee: Unassigned
• Reporter: tony
• Created: 20/Jul/21 04:01
• Updated: 25/Jul/21 20:09

Description

I'm using a RollingRandomAccessFile appender in my log4j2 config, I want the log file has permission 750(rwxr-x---), but only the first log file(the one that gets created when application starts up) has permission 750, all the new log file after rolling over still has a default permission, as you can see in the image below, server.log.1 has permission 750, which is the very first server.log that gets renamed to server.log.1, all the other files have a default permission.

my configuration for the appender is below:

 

<RollingRandomAccessFile name="testlog"
   fileName="${LOG_DIR}/server.log" filePattern="${LOG_DIR}/server.log.%i"
          filePermissions="rwxr-x---"
   append="true" >
   <PatternLayout>
      <Pattern>some random pattern that I don't want to show here</Pattern>
   </PatternLayout>
   <Policies>
      <SizeBasedTriggeringPolicy size="10 KB" />
   </Policies>
   <DefaultRolloverStrategy max="7"/>
</RollingRandomAccessFile>

It looks like log4j2 sets permission correctly on startup, but doesn't set permission when rolling over log files, am I using the correct configuration or is this a bug? thanks.