After the latest lot of kernel security updates have come out, I updated one of my colo boxes and rebooted. It didn't come back up and fails when booting on: * CPU Microcode update * iptables * eth0
The booting process completes, however as you can imagine, there is no network connectivity at all. The only config changes were installing the new kernel. Booting back into 2.6.18-8.1.8.el5 make things work 100% again.
I also got this type of probles once before. pls check initrd image. pls performe below steps.
gunzip -cd /boot/initrd-2.6.18-8.1.8.el5.img |cpio -t |more and see
then, check your newly installed kernel. as below
gunzip -cd /boot/initrd-2.6.18-53.1.13.el5.img |cpio -t |more and see
pls check what is missing. If found, All you have to make an initrd by using mkinitrd command.
pls check below URL
http://readlist.com/lists/centos.org/centos/2/13952.html