Virtualization

• HVM is hardware and faster
• PV is Paravirtualization and usually slower

Notes

• http://serverfault.com/questions/222010/difference-between-xen-pv-xen-kvm-and-hvm
• http://paste.debian.net/180252/

Debian

Xen Config File: /etc/xen/xend-config.sxp

Install

apt-get install xen-linux-system
apt-get install xen-qemu-dm-4.0
dpkg-divert --divert /etc/grub.d/08_linux_xen --rename /etc/grub.d/20_linux_xen
update-grub

May want to do this eventually to limit dom0 ram:

/etc/default/grub
# Xen boot parameters for all Xen boots
GRUB_CMDLINE_XEN="dom0_mem=1024M"

then

update-grub

then edit

/etc/xen/xend-config.sxp
(dom0-min-mem 1024)
(enable-dom0-ballooning no)

You would then need to reboot.

Network Scripts

/etc/xen/scripts/network-bridge
/etc/xen/scripts/vif-bridge

Notes

• http://www.debian-administration.org/articles/360

Configure

Debian wiki states that the network control scripts that come with Xen are going to be phased out eventually. Goes on to say that you should setup networking yourself.

aptitude install bridge-utils
brctl addbr br0

• br0 could be anything like: whatever0

ip addr show

• Just to see interfaces

You now need to add interfaces to the bridge

brctl addif br0 eth0 eth1

To make the bridge perm you need to edit /etc/network/interfaces

 /etc/network/interfaces 

 Template error: are you trying to use the = sign? Visit Help:Template#Escape template-breaking characters for workarounds.

Fuck

http://vimeo.com/38636349

• cloudstack.org/
• xcp
• http://www.xvpsource.org/
• openstack

Notes

HyperVM

Free and looks like a great product. Does not work with CentOS 6 because CentOS dropped Xen?

• Xen XCP
• OpenVZ
• Virtuzzo
• ProxMox
• SolusVM
• vePortal

Most of these can integrate with a billing platform.

• lxcenter.org

kloxo

Xen

http://wiki.debian.org/Xen