From mboxrd@z Thu Jan  1 00:00:00 1970
From: Steve Grubb <sgrubb@redhat.com>
Subject: Re: Auditd syslog plugin
Date: Mon, 04 Jun 2018 18:11:01 -0400
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On Monday, June 4, 2018 9:02:04 AM EDT Boyce, Kevin P [US] (AS) wrote:
> All,
> 
> After enabling the syslog plugin for audispd and sending logs to a remote
> server I am seeing every event being written to /var/log/messages locally
> which is filling up /var.
> 
> This is all redundant since local audit logs are kept in /var/log/audit. 
> Is there a way to prevent auditd syslog plugin from writing to
> /var/log/messages?

That is pretty much what the plugin does. It writes all events to syslog 
which based on rules in /etc/rsyslog.conf decides what to do with the text. 
Typically it is to write everything to /var/log/messages.

However, you can assign a specific facility to the audit events in the /etc/
audisp/plugins.d/syslog.conf file and then in rsyslog.conf exclude the 
facility by putting <facility>.none on the /var/log/messages line.

-Steve