There are several ways to determine if an updated kernel is available for the system.
The Red Hat Network — For a system subscribed to the Red Hat Network, the yum
package manager can download the latest kernel and upgrade the kernel on the system. The Dracut
utility will create an initial RAM disk image if needed, and configure the boot loader to boot the new kernel. For more information on installing packages from the Red Hat Network, see Chapter 8, Yum
. For more information on subscribing a system to the Red Hat Network, see Chapter 6, Registering the System and Managing Subscriptions