Brunner, Brian T. wrote:
[mailto:centos-bounces@centos.org] On Behalf Of Aleksey Tsalolikhin
Hi. I just noticed I had a CentOS 5.3 system that I updated to CentOS 5.5 a few days ago, and I just ran "yum -y update" again to get the latest kernel, and I just noticed it still has the old 2.6.18-128 kernel instead of the new 2.6.18-194.17. What gives?
/etc/grub.conf points at 2.6.18-194.17, but when I reboot, 2.6.18-128 comes up.
myserver# yum -y update ... myserver# reboot .....
myserver# uname -a Linux hwd-ddc-sonydb-prod 2.6.18-128.4.1.el5 #1 SMP Tue Aug 4 20:19:25 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux myserver# cat /etc/grub.conf # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/md1 # initrd /initrd-version.img #boot=/dev/md0 default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-194.17.1.el5)
Caveat: I am not a grub guru, and don't play one on TV. This is the only "title" line in your grub.conf, so it's the only entry in your grub.conf as far as grub cares.
root (hd0,0) kernel /vmlinuz-2.6.18-194.17.1.el5 ro root=/dev/md1 initrd /initrd-2.6.18-194.17.1.el5.img title CentOS(2.6.18-194.11.4.el5) root (hd0,0) kernel /vmlinuz-2.6.18-194.11.4.el5 ro root=/dev/md1 initrd /initrd-2.6.18-194.11.4.el5.img title CentOS (2.6.18-128.4.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-128.4.1.el5 ro root=/dev/md1 initrd /initrd-2.6.18-128.4.1.el5.img myserver# rpm -q kernel
This is the last kernel line, so it's the one that grub acts on. Result: You boot 2.6.18-128.4.1.el5
<snip> Huh? default is 0, so it will go against the first title, not the last. Wait - I haven't been following this over the weekend, so I can't tell if someone's email has run the lines together. The first entry has to be
title CentOS (2.6.18-194.17.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-194.17.1.el5 ro root=/dev/md1 initrd /initrd-2.6.18-194.17.1.el5.img
with the next "title" on the next line.
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