[CentOS] system "stuck" with 2.6.18-128 kernel. how to move to2.6.18-194.17?

m.roth at 5-cent.us m.roth at 5-cent.us
Mon Oct 4 11:20:09 EDT 2010


Brunner, Brian T. wrote:
>> [mailto:centos-bounces at 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.

         mark



More information about the CentOS mailing list