CentOS upgrade fails

[sn]

Hi,

I keep getting errors when upgrading my centos servers. Why does this happen?
I use CentOS 6 x86_64 as a xen pv template. cpanel is installed and i use the upgrade script.

The errors are like this:

Error Downloading Packages:
lve-0.9-0.2.el6.x86_64: failed to retrieve getPackage/lve-0.9-0.2.el6.x86_64.rpm from cloudlinux-x86_64-server-6
error was [Errno 14] PYCURL ERROR 51 - "SSL: certificate subject name xmlrpc.cln.cloudlinux.com does not match target host name ams-proxy.cl-mirror.net\"

[iseletsk]

We are fixing it right now. One of the mirrors has wrong certificate (it was ok for 5.x, but 6.x doens accept it).

[sn]

Ok.. It seems that the upgrade script select wrong kernels too.
It should use kernel-xen but it dosen .

Is there a fix for this also?

[iseletsk]

1. Edit /etc/sysconfig/kernel
Change DEFAULTKERNEL from kernel to kernel-xen
If you don have that file, create it, and populate it with this:

# UPDATEDEFAULT=yes
# new kernels the default
UPDATEDEFAULT=yes

# DEFAULTKERNEL specifies the default kernel package type
DEFAULTKERNEL=kernel-xen

2. Do:
yum install kernel-xen

3. Don skip this step:
rpm -qa|grep kernel
Take all non-xen kernels, and for each of them:
rpm -e kernel-.....
(full version of a kernel)

If you leave any non kernel-xen packages, future yum updates will update those packages as well.

[iseletsk]

That particular mirror should be back to normal, you should be able to update from it now.

[sn]

How do i see if its a xen kernel? I see no kernel with xen in the name.

[iseletsk]

xen kernel come in a package named:
kernel-xen

and when you do uname -r it will show up as:
2.6.32-231.6.1.lve0.9.8.x86_64xen

or something similar

[sn]

Well.. It doesn really seem to work with the xen kernel.

# yum install kernel-xen
Loaded plugins: fastestmirror, rhnplugin
Loading mirror speeds from cached hostfile
* cloudlinux-x86_64-server-6: ams-proxy.cl-mirror.net
Setting up Install Process
Package kernel-2.6.32-231.6.1.lve0.9.8.x86_64 already installed and latest version
Nothing to do

# rpm -qa|grep kernel
kernel-2.6.32-71.29.1.el6.x86_64
kernel-firmware-2.6.32-231.6.1.lve0.9.8.noarch
kernel-devel-2.6.32-231.6.1.lve0.9.8.x86_64
dracut-kernel-004-33.2.el6_0.noarch
kernel-headers-2.6.32-231.6.1.lve0.9.8.x86_64
kernel-2.6.32-231.6.1.lve0.9.8.x86_64

[lkanter]

In CL6 regular kernel (without -xen) should be able to act as xen domU kernel, no other kernel is needed.

[iseletsk]

could you post /boot/grub/menu.lst

[lkanter]

Please replace "xvda" to "xvde" in both /boot/grub/grub.conf and /etc/fstab and try to boot our kernel - it should boot.

[iseletsk]

Аs a side note -- this is a temporary solution -- we will fix it in the future.