From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve Grubb Subject: Re: audit log still getting rotated even with max_log_file_action = ignore? Date: Fri, 06 Nov 2015 14:12:52 -0500 Message-ID: <37102497.kx1YEe0YIN@x2> References: <5637D841.3090501@jlbond.com> <2015477.b7QVr7lf9X@x2> <563CEC5C.5010301@jlbond.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <563CEC5C.5010301@jlbond.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-audit-bounces@redhat.com Errors-To: linux-audit-bounces@redhat.com To: Bond Masuda Cc: linux-audit@redhat.com List-Id: linux-audit@redhat.com On Friday, November 06, 2015 10:07:24 AM Bond Masuda wrote: > On 11/02/2015 03:32 PM, Steve Grubb wrote: > > I took a quick look at the code. I can't see how this is happening > > unless auditd is receiving a SIGUSR1 signal. You might want to put > > some syslog calls in to auditd-event.c log when auditd gets told to > > rotate so that it can be correlated to other system activities. -Steve > > Hi Steve, > > The cron script i mention below does use "service auditd rotate", which > does send a SIGUSR1. But these rotations are happening outside the time > frame when that cron job runs. Can you find any other cron job running around that time? > Additionally, they seem to rotate around when the log file reaches about > 90MB. It almost seems like there's some default behavior? The settings to note in your email are these: num_logs = 5 max_log_file = 6 max_log_file_action = ignore admin_space_left = 50 admin_space_left_action = exec /usr/local/bin/remove_oldest_audit_log This means you would have 6 log files that 5 MB each. However, the max_log_file action says ignore. > I was wondering if maybe my syntax in the config file was wrong and auditd was > ignoring my setting and just using defaults? It might be that you are hitting the admin_space_left_action which runs remove_oldest_audit_log. That is my only guess. Does the math work out for partition size - size of all logs being approximayely 50MB? If so, this is your problem and you might need a bigger partition. But based on a quick review of the man page, you might set num_logs = 0. That is supposed to disable rotating as long as max_log_size_action != rotate. You have ignore, so that should work if you don't have the problem noted above. -Steve > >> I have a cron job in /etc/cron.daily/auditd that I use to rotate + > >> compress the audit logs, but this is not what is causing the audit log > >> rotation. > >> > >> Is there another setting I must set in order for it to not automatically > >> rotate the audit log? How do I achieve the desired effect, where the > >> audit log is only rotated when my cron script runs?