The Photon operating system must allocate audit record storage capacity to store audit records when audit records are not immediately sent to a central audit record storage facility.

Audit logs are most useful when accessible by date, rather than size. This can be accomplished through a combination of an audit log rotation and setting a reasonable number of logs to keep. This ensures that audit logs are accessible to the ISSO in the event of a central log processing failure.

At the command line, run the following command to verify auditd is configured to keep a number of audit logs in the event of a central log processing failure:

# grep -E "^num_logs|^max_log_file_action" /etc/audit/auditd.conf

Example result:

num_logs = 5 max_log_file_action = ROTATE

If "num_logs" is not configured to "5" or greater, this is a finding. If "max_log_file_action" is not configured to "ROTATE", this is a finding.

Navigate to and open:

/etc/audit/auditd.conf

Ensure the following lines are present, not duplicated, and not commented:

num_logs = 5 max_log_file_action = ROTATE

At the command line, run the following command:

# pkill -SIGHUP auditd