Auditd event cache

Operating Systems Linux Red Hat Auditd event cache

08-12-2010

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Auditd event cache

I'm writing an auditd plugin. In my testing, I enabled pam_tty_audit.

After running test data through it, I notice that when logged in as root, the tty events are sent in real time, and not cached in the event queue.

When running as a user, the events are only spit out by the dispatcher (and presumably downstream in the auditd daemon) much later - presumably when the cache is full.

The other difference is the root tty events are sent as individual events, whereas the user events are collected and sent as a single compound event. I've tried various configuration changes, but this behavior seems to be set in stone. Is there a way of forcing the system to send tty events to the plugin in near real time as with root?

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zos-remote.conf

ZOS-REMOTE.CONF(5)					  System Administration Utilities					ZOS-REMOTE.CONF(5)

NAME

       zos-remote.conf - the audisp-racf plugin configuration file

DESCRIPTION

       zos-remote.conf	controls  the  configuration  for the audispd-zos-remote(8) Audit dispatcher plugin. The default location for this file is
       /etc/audisp/zos-remote.conf, however, a different file can be specified as the first argument to the audispd-zos-remote	plugin.  See  aud-
       ispd-zos-remote(8) and auditd(8).  The options available are as follows:

       server This is the IBM z/OS ITDS server hostname or IP address

       port   The port number where ITDS is running on the z/OS server. Default is 389 (ldap port)

       user   The  z/OS RACF user ID which the audispd-zos-remote plugin will use to perform Remote Audit requests. This user needs READ access to
	      FACILITY Class resource IRR.LDAP.REMOTE.AUDIT (See audispd-zos-remote(8)).

       password
	      The password associated the the z/OS user ID configured above.

       timeout
	      The number in seconds that audispd-zos-remote plugin will wait before giving up in connection attempts and  event  submissions.  The
	      default value is 15

       q_depth
	      The audispd-zos-remote plugin will queue inputed events to the maximum of q_depth events while trying to submit those remotely. This
	      can handle burst of events or in case of a slow network connection. However, the audispd-zos-remote plugin will drop events in  case
	      the  queue  is  full.  The default queue depth is 64 - Increase this value in case you are experiencing event drop due to full queue
	      (audispd-zos-remote will log this to syslog).

SEE ALSO

       audispd-zos-remote(8)

AUTHOR

       Klaus Heinrich Kiwi <klausk@br.ibm.com>

IBM
								     Oct 2007							ZOS-REMOTE.CONF(5)

Red Hat