Installation guide

# yum install kvm
2. ⁠
Verif y wh ich kern el is in u se
The kernel-xen package may be installed. Use the uname command to determine which kernel
is running:
$ uname -r
2.6.18-159.el5xen
The present kernel, "2.6.18-159.el5xen", is running on the system. If the default kernel,
"2.6.18-159.el5", is running you can skip the substep.
a. ⁠
Ch an g in g t h e Xen kern el t o t h e d ef ault kern el
The grub.conf file determines which kernel is booted. To change the default kernel
edit the /boot/grub/grub.conf file as shown below.
default=1
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Red Hat Enterprise Linux Server (2.6.18-159.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-159.el5 ro root=/dev/VolGroup00/LogVol00
rhgb quiet
initrd /initrd-2.6.18-159.el5.img
title Red Hat Enterprise Linux Server (2.6.18-159.el5xen)
root (hd0,0)
kernel /xen.gz-2.6.18-159.el5
module /vmlinuz-2.6.18-159.el5xen ro
root=/dev/VolGroup00/LogVol00 rhgb quiet
module /initrd-2.6.18-159.el5xen.img
Notice the d ef au lt = 1 parameter. This is instructing the GRUB boot loader to boot the
second entry, the Xen kernel. Change the default to 0 (or the number for the default
kernel):
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Red Hat Enterprise Linux Server (2.6.18-159.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-159.el5 ro root=/dev/VolGroup00/LogVol00
rhgb quiet
initrd /initrd-2.6.18-159.el5.img
title Red Hat Enterprise Linux Server (2.6.18-159.el5xen)
root (hd0,0)
kernel /xen.gz-2.6.18-159.el5
module /vmlinuz-2.6.18-159.el5xen ro
root=/dev/VolGroup00/LogVol00 rhgb quiet
module /initrd-2.6.18-159.el5xen.img
3. ⁠
Red Hat En t erp rise Lin ux 5 Virt ualizat ion Guid e
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