William L. Maltby wrote on Wed, 08 Apr 2009 05:39:27 -0400:
The installonlypkgs and installonly_limit keywords. The first, according to man yum.conf, defaults to kernel, kernel-smp, kernel-bigmem, kernel-enterprise, kernel-debug, kernel-unsupported and the latter to 3.
It seems to default to kernel* as I have clearly seen xen kernels announced for removal. All the yum.conf files are the same on my machines. I lied about what I wrote about the kernels that got kept. It's always 5 on the amchiens that have existed for some time. This fits with the installonly_limit = 5 in all yum.conf files. On the one machine with the problem it's 4 kernels, I think it hasn't reached more yet. Anyway, it remains a mystery why grub.conf didn't get updated here. I will check again with next kernel ...
Kai