Creatiing a custom iso with updated rpms
I downloaded the 6.3 CentOS iso image, and then downloaded the latest versions of the rpms that are listed when a "yum updated" is run on a CentOS 6.3 system.
I want to create a custom CentOS iso based on the current iso, updated the rpms with the latest versions I've downloaded. For example, the kernel rpm that comes with the CentOS 6.3 iso is kernel-2.6.32-279.el6.x86_64.rpm (as listed in the Packages directory in the root of the iso). The latest available is kernel-2.6.32-279.19.1.el6.x86_64.rpm. There are something like 58 rpms in the Packages directory that have updates available.
I have a script that generates a custom iso from the default rpms that come with the release iso, but I'm not sure what I need to do to create a custom iso with the set of new rpms. I assume I need to update the comps.xml file with the latest versions of the rpms I am updating, but I can't find entries for most of the rpms I need to update. There's not even one for kernel-2.6.32-279.el6.x86_64.rpm.
Can someone enlighten me as to the proper process?