LinuxQuestions.org - [SOLVED] Can't install kernel module on CentOS. "...likely that xx belongs to a chroot's host"

I'm having trouble installing a kernel module on CentOS 5.4 in Amazon's EC2.

I have tried adding the vendor's repository and installing through yum and also installing directly from the .rpm file.

Yum output:

Code:

Total download size: 83 k

Is this ok [y/N]: y

Downloading Packages:

thepackage-x.x.x_rhel5-3.noarch.rpm                                                                                                  |  83 kB    00:00

Running rpm_check_debug

Running Transaction Test

Finished Transaction Test

Transaction Test Succeeded

Running Transaction

  Installing    : thepackage                                                                                                                            1/1

Loading new thepackage-x.x.x_rhel5 DKMS files...

First Installation: checking all kernels...

It is likely that 2.6.21.7-2.fc8xen belongs to a chroot's host

Module build for the currently running kernel was skipped since the

kernel source for this kernel does not seem to be installed.



Installed:

  thepackage.noarch 0:x.x.x_rhel5-3



Complete!

I have installed the kernel headers from here:

Code:

ftp://ftp.pbone.net/mirror/dl.central.org/dl/linuxdev/fedora8/x86_64/kernel-xen-devel-2.6.21.7-2.fc8.x86_64.rpm

Is there any way I can force the module to build?
And what does this mean:
It is likely that 2.6.21.7-2.fc8xen belongs to a chroot's host
Module build for the currently running kernel was skipped since the
kernel source for this kernel does not seem to be installed. ?

Useful info:

Code:

[root@ip-10-0-1-4 ~]# uname -a

Linux ip-10-0-1-4 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:34:28 EST 2008 x86_64 x86_64 x86_64 GNU/Linux

Thanks.