Make max_log_file_action for auditd configurable

This commit allows to configure the max_log_file_action auf auditd to
avoid filling small /var/log partitions for systems that create many
audit log entries. Or run for a long period of time.

Signed-off-by: Jan Dittberner <jan.dittberner@t-systems.com>

defaults/main.yml

@@ -250,6 +250,7 @@ os_hardening_enabled: true
 
 # Set to false to disable installing and configuring auditd.
 os_auditd_enabled: true
+os_auditd_max_log_file_action: keep_logs
 
 # Set the SELinux state, can be either disabled, permissive, or enforcing.
 os_selinux_state: enforcing

templates/etc/audit/auditd.conf.j2

@@ -10,7 +10,7 @@ dispatcher = /sbin/audispd
 name_format = NONE
 ##name = mydomain
 max_log_file = 6
-max_log_file_action = keep_logs
+max_log_file_action = {{ os_auditd_max_log_file_action }}
 space_left = 75
 space_left_action = SYSLOG
 action_mail_acct = root