NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SIGNALS | FILES | NOTES | SEE ALSO | AUTHOR | COLOPHON

AUDITD(8)              System Administration Utilities             AUDITD(8)

NAME         top

       auditd - The Linux Audit daemon

SYNOPSIS         top

       auditd [-f] [-l] [-n] [-s disable|enable|nochange]

DESCRIPTION         top

       auditd is the userspace component to the Linux Auditing System. It's
       responsible for writing audit records to the disk. Viewing the logs
       is done with the ausearch or aureport utilities. Configuring the
       audit system or loading rules is done with the auditctl utility.
       During startup, the rules in /etc/audit/audit.rules are read by
       auditctl and loaded into the kernel. Alternately, there is also an
       augenrules program that reads rules located in /etc/audit/rules.d/
       and compiles them into an audit.rules file. The audit daemon itself
       has some configuration options that the admin may wish to customize.
       They are found in the auditd.conf file.

OPTIONS         top

       -f     leave the audit daemon in the foreground for debugging.
              Messages also go to stderr rather than the audit log.

       -l     allow the audit daemon to follow symlinks for config files.

       -n     no fork. This is useful for running off of inittab or systemd.

       -s=ENABLE_STATE
              specify when starting if auditd should change the current
              value for the kernel enabled flag. Valid values for
              ENABLE_STATE are "disable", "enable" or "nochange". The
              default is to enable (and disable when auditd terminates). The
              value of the enabled flag may be changed during the lifetime
              of auditd using 'auditctl -e'.

SIGNALS         top

       SIGHUP causes auditd to reconfigure. This means that auditd re-reads
              the configuration file. If there are no syntax errors, it will
              proceed to implement the requested changes. If the reconfigure
              is successful, a DAEMON_CONFIG event is recorded in the logs.
              If not successful, error handling is controlled by
              space_left_action, admin_space_left_action, disk_full_action,
              and disk_error_action parameters in auditd.conf.

       SIGTERM
              caused auditd to discontinue processing audit events, write a
              shutdown audit event, and exit.

       SIGUSR1
              causes auditd to immediately rotate the logs. It will consult
              the max_log_file_action to see if it should keep the logs or
              not.

       SIGUSR2
              causes auditd to attempt to resume logging. This is usually
              needed after logging has been suspended.

FILES         top

       /etc/audit/auditd.conf - configuration file for audit daemon

       /etc/audit/audit.rules - audit rules to be loaded at startup

       /etc/audit/rules.d/ - directory holding individual sets of rules to
       be compiled into one file by augenrules.

NOTES         top

       A boot param of audit=1 should be added to ensure that all processes
       that run before the audit daemon starts is marked as auditable by the
       kernel. Not doing that will make a few processes impossible to
       properly audit.

       The audit daemon can receive audit events from other audit daemons
       via the audisp-remote audispd plugin. The audit daemon may be linked
       with tcp_wrappers to control which machines can connect. If this is
       the case, you can add an entry to hosts.allow and deny.

SEE ALSO         top

       auditd.conf(5), audispd(8), ausearch(8), aureport(8), auditctl(8),
       augenrules(8), audit.rules(7).

AUTHOR         top

       Steve Grubb

COLOPHON         top

       This page is part of the audit (Linux Audit) project.  Information
       about the project can be found at 
       ⟨http://people.redhat.com/sgrubb/audit/⟩.  If you have a bug report
       for this manual page, send it to linux-audit@redhat.com.  This page
       was obtained from the project's upstream Git repository 
       ⟨https://github.com/linux-audit/audit-userspace.git⟩ on 2017-03-13.
       If you discover any rendering problems in this HTML version of the
       page, or you believe there is a better or more up-to-date source for
       the page, or you have corrections or improvements to the information
       in this COLOPHON (which is not part of the original manual page),
       send a mail to man-pages@man7.org

Red Hat                           Sept 2013                        AUDITD(8)