FortiSIEM OS update process includes the following:
Whenever Redhat/CentOS publishes an important OS update for CentOS 8, an announcement is made via the CentOS-announce mailing list. The FortiSIEM engineering team subscribes to this mailing list. Once a new update is available, FortiSIEM engineering first tests these updates on a FortiSIEM Virtual Appliance for stability and regression. After confirming that the update is safe, the FortiSIEM CentOS 8 update server updates the OS packages from CentOS mirror servers.
Before release, FortiSIEM is updated with the latest updates from the FortiSIEM CentOS 8 update server. FortiSIEM customers automatically receive an OS update when they upgrade to the latest FortiSIEM.
If a customer needs to update CentOS 8 without upgrading the FortiSIEM product itself, they can execute the script on demand:
yum upgrade -y. For this, the FortiSIEM instance needs port 443 access to: