Information
Configure grub2 so that processes that are capable of being audited can be audited even if they start up prior to auditd startup.
Rationale:
Audit events need to be captured on processes that start up prior to auditd , so that potential malicious activity cannot go undetected.
Solution
Edit /etc/default/grub and add audit=1 to GRUB_CMDLINE_LINUX:
GRUB_CMDLINE_LINUX="audit=1"
Run the following command to update the grub2 configuration:
# grub2-mkconfig -o /boot/grub2/grub.cfg
Notes:
This recommendation is designed around the grub2 bootloader, if another bootloader is in use in your environment enact equivalent settings.