Information
The operating system must immediately notify the system administrator (SA) and information system security officer (ISSO) when the audit record storage volume reaches 25 percent remaining of the allocated capacity.
GROUP ID: V-260596
RULE ID: SV-260596r971542
If security personnel are not notified immediately when storage volume reaches 25 percent remaining of the allocated capacity, they are unable to plan for audit record storage capacity expansion.
Solution
Configure the operating system to notify the SA and ISSO when the audit record storage volume reaches 25 percent remaining of the allocated capacity.
Add or modify the following lines in the "/etc/audit/auditd.conf " file:
space_left = 25%
space_left_action = email
Restart the "auditd" service for the changes to take effect:
$ sudo systemctl restart auditd.servic
Note: If the "space_left_action" parameter is set to "exec", ensure the command being executed notifies the SA and ISSO.