Xen

[root@ns ~]# vi /etc/modprobe.conf

alias eth0 tg3
alias scsi_hostadapter ahci
alias snd-card-0 snd-hda-intel
options snd-card-0 index=0
options snd-hda-intel index=0
remove snd-hda-intel { /usr/sbin/alsactl store 0 >/dev/null 2>&1 || : ; }; /sbin/modprobe -r –ignore-remove snd-hda-intel
# add a module for xen
alias scsi_hostadapter xenblk

[root@ns ~]# yum -y install xen kernel-xen

[root@ns ~]# vi /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/Host/LogVol01
#initrd /initrd-version.img
#boot=/dev/sda
# change default kernel
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.18-8.1.1.el5xen)
root (hd0,0)

# specify amount of memories

kernel /xen.gz-2.6.18-8.1.1.el5 dom0_mem=512M

module /vmlinuz-2.6.18-8.1.1.el5xen ro root=/dev/Xen/Host00

module /initrd-2.6.18-8.1.1.el5xen.img

title CentOS (2.6.18-8.1.1.el5)
root (hd0,0)

kernel /vmlinuz-2.6.18-8.1.1.el5 ro root=/dev/Xen/Host00

initrd /initrd-2.6.18-8.1.1.el5.img

title CentOS (2.6.18-8.el5)
root (hd0,0)

kernel /vmlinuz-2.6.18-8.el5 ro root=/dev/Xen/Host00

initrd /initrd-2.6.18-8.el5.img

[root@ns ~]# chkconfig xend on
[root@ns ~]# chkconfig xendomains on
[root@ns ~]# shutdown -r now

[root@ns ~]# xm list# show status
NameID
Mem(MiB)
VCPUs
State
Time(s)
Domain-0 0
510
2
r—–
12.6