Installing XEN on CentOS 5.x
This is a very simple installation of XEN visualization that I will be using in future posts as a reference.
# yum groupinstall Virtualization
Edit grub.conf to reflect the correct default Kernel
# 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/VolGroup00/LogVol00 # initrd /initrd-version.img #boot=/dev/sda default=0 timeout=1 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-92.1.10.el5xen) root (hd0,0) kernel /xen.gz-3.3.0 module /vmlinuz-2.6.18-92.1.10.el5xen ro root=/dev/VolGroup00/LogVol00 module /initrd-2.6.18-92.1.10.el5xen.img title CentOS (2.6.18-92.1.10.el5) root (hd0,0) kernel /vmlinuz-2.6.18-92.1.10.el5 ro root=/dev/VolGroup00/LogVol00 initrd /initrd-2.6.18-92.1.10.el5.img title CentOS (2.6.18-92.el5) root (hd0,0) kernel /vmlinuz-2.6.18-92.el5 ro root=/dev/VolGroup00/LogVol00 initrd /initrd-2.6.18-92.el5.img
Reboot the machine for new XEN kernel to take effect
# reboot
After the reboot check the Kernel to reflect the change
# uname -r 2.6.18-53.1.21.el5xen
Install a CentOS 32 bit Virtual Machine using virt-install and your local YUM repository
# virt-install -p --location=http://server1.example.co.za/centos/5/os/i386 --noautoconsole \ --name=machine --ram=284 --file=/path/to/machine.img --file-size=5 --nographics -b xenbr0
Some useful commands
# xm list # xm create vmmachine # xm console vmmachine