When AIX audit start, How to set the /audit/stream.out file size ?


 
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Operating Systems AIX When AIX audit start, How to set the /audit/stream.out file size ?
# 1  
Old 12-30-2011
When AIX audit start, How to set the /audit/stream.out file size ?

Dear All


When I start the AIX(6100-06)audit subsystem.

the log will save in /audit/stream.out (or /audit/trail), but in default when /audit/stream.out to grow up to 150MB.

It will replace the original /audit/stream.out (or /audit/trail).

Then the /audit/stream.out become empty and only contain new data.

So, Can I manual setting the stream.out (or /audit/trail) file size?
# 2  
Old 12-30-2011
Why don't you write a script which will monitor the file size of stream.out and if it becomes close to 150MB, the script will make a backup copy of it before the audit subsystem over writes the file?

You may place this in your crontab for executing it in every 30 minutes or so:

Code:
#!/bin/ksh

size=$( /usr/bin/du -k /audit/stream.out | /bin/awk {print $1} )

# I'm considering the threshold size to be 148MB; you may increase the
# frequency of the cron job while increasing the threshold size.

if [ $size -ge 151552 ]; then
   cp /audit/stream.out /audit/stream.out.`date +"%F-%H-%M-%S"`
fi

exit 0

# 3  
Old 12-30-2011
Hi, admin_xor

Thanks for your reply.

If possible best way is use audit subsystem to change the restrict of file size.

Use script to copy a stream.out to a new file (ex. stream.out.1).

It has a problem, when stream.out copy to stream.out.1 there may have some record loss..
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