1. Installation of CentOS in VirtualBox
This is easy so I wont’be writing too much. Ask me question if you have any problems.
2. OK. CentOS is installed on!
You need to setup your network so you have access to the Internet.
Check by issuing command $ifconfig
if you have’nt got eth0 then
$ifconfig eth0 up
Job done you are great!
So we now have IP configuration set up . Yupi!
can you ping Google DNS 220.127.116.11 $ping 18.104.22.168
YES! You can’t I know that 1 point score for you! 0:1 for me 😦
Lets install XEN!!!!!!!!!!!!!!!!!!!!!!! HYPER DUPER SUPER virtualization enviroment.
yum install centos-release-xen
yum install xen
:) easy isn't it ?
I am using Cent OS 6.5 minimal instal version so 73mb to downlad
The Xen hypervisor runs above the linux kernel, and we need to tell grub to boot it first and then chain boot the linux kernel for our dom0. In order to do that, a script is provided as part of the centos-release-xen rpm, lets run that now:
At this point if you look at your /boot/grub/grub.conf it should have something like this:
title CentOS (3.4.46-8.el6.centos.alt.x86_64) root (hd0,0) kernel /xen.gz dom0_mem=1024M,max:1024M loglvl=all guest_loglvl=all module /vmlinuz-3.4.46-8.el6.centos.alt.x86_64 ro root=/dev/mapper/vg_xen01-lv_root rd_LVM_LV=vg_xen01/lv_swap rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=uk rd_NO_MD LANG=en_GB rd_LVM_LV=vg_xen01/lv_root SYSFONT=latarcyrheb-sun16 crashkernel=auto rd_NO_DM rhgb quiet module /initramfs-3.4.46-8.el6.centos.alt.x86_64.img
and this should be set as your default boot kernel. Once you reboot, verify that the 3.x kernel is running with:
and verify that xen is running with:
At this point you are now ready to bring up your first VM, and there are multiple ways of achieving this. For new users, who are looking for the easiest install path, the Libvirt process is recommended. Advanced users looking to hand setup the network, the backing filestore and the xen environment will most likely want to use the xen command line tools.
With Xen CLI tools, including xm and xl: /Xen4Cli
Using LibVirt/ Virt-install and Virt-Manager with xen4centos: /Xen4Libvirt
I normally like to add a couple of packages to every minimal install, and some things later may need these packages. Install them via this command:
yum install rsync wget vim-enhanced openssh-clients
Installing libvirt (on the Dom0 machine)
First we need to install the basic packages required for libvirt:
yum install libvirt python-virtinst libvirt-daemon-xen
After the install, restart your Dom0 machine.
That is it to start of now you can create your virtual inside virtual machine ;)