There are few different options while you want to install virtual servers. you can also use default utility available with xen. virt-install is very famous among others. Its very simple and easy to use. In this article I will explain you how to install LVM based virtual server. I will assume that you have installation try available so that we can use kick start method to do quick install. If you don’t have installation tree available then please visit my previous article. “How to create local yum repository” available at http://www.linux4beginners.info/?q=node/local-centos-yum-repo.
Lets start :
In my case physical volume is /dev/sda2. to find out which device is setup as PV in your system, you can use
This command will also show you volume group name identified by VG.
if you want to find out VolumeGroup name then you can use vgscan command also. NOW…
First of all we will need to create a logical volume which will be a disk for your virtual server. There is no need to format this lvm as we are going to use it as a raw disk. to create a disk use following command. I presume that you have enough unused disk space available in your volume group.
well done. now you have your disk (logical volume) named xenvm00 ready to install virtual machine.
use following command to install virtual machine.
- #virt-install -p –name=xenvm00 –location=http://www.linux4beginners.info/ –bridge=xenbr0 –file=/dev/VolGroup00/xenvm00 –ram=2048 -x “ks=http://1.2.3.4/xenvm00.ks
In above command :
-p specifies it is para virtualized system,
–name specifies hostname of virtual system you are installing.
–location tells the location of your local centos / redhat / fedora repository. Please change it as per your convenience.
–bridge tells which network device to specify for VM.
–file specifies the disk for installation for your virtual system.
–ram specifirs how much memory to be allocated.
-x is for extra arguments. in this scenario we have spceified kick start file location. sample kick start file is also listed below.Follow the screen and answer the questions asked. as we are installing it through kickstart method, it will ask you minimum questions only…
- #Sample kickstart configuration
install
url –url http://1.2.3.4/centos52_64/network –device eth0 –bootproto static –ip 192.168.X.Y –netmask 255.255.X.Y –gateway 192.168.X.Z –nameserver ns1,ns2 –hostname xenvm00
lang en_US.UTF-8
skipx
langsupport –default=en_GB.UTF-8 en_GB.UTF-8 en_US.UTF-8
keyboard uk
rebootrootpw –iscrypted $1$1kdfjalsr8099404=-459qkfjdfoiaisfoalasdkfasdf0aw348r0
firewall –enabled
selinux –permissive
authconfig –enableshadow –enablemd5
timezone [put your timezone]
bootloader –location=mbr –append=”console=ttyS0,115200 rhgb quiet”clearpart –all
part /boot –fstype ext3 –size=256
part pv.2 –size=0 –grow
volgroup vg0 –pesize=32768 pv.2
logvol swap –fstype swap –name=lvswap –vgname=vg0 –size=2048
logvol / –fstype ext3 –name=lvroot –vgname=vg0 –size=4096
logvol /usr –fstype ext3 –name=lvusr –vgname=vg0 –size=2048
logvol /var –fstype ext3 –name=lvvar –vgname=vg0 –size=2048
logvol /tmp –fstype ext3 –name=lvtmp –vgname=vg0 –size=2048#List of required packages to install. please add / remove packages or package groups as per your requirement.it
#very straight forward and easy.%packages
@text-internet
@legacy-software-support
@web-server
emacs
kexec-tools
device-mapper-multipath
e2fsprogs
lvm2
sendmail-cf
grub
sysstat
net-snmp
-htmlview
-pinfo
-redhat-menus
-GConf2
-gtk2
-libnotify
-notification-daemon
-pango
-paps
-redhat-lsb
-dosfstools
-ppp
-rp-pppoe
-rdist
ntp
ruby
gpm
vim-common
vim-minimal
vim-enhanced
xen
kernel-xen
kernel-xen-devel
gcc%post
rpm –import http://www.linux4beginners.info/centos52_64/RPM-GPG-KEY-redhat-release
chkconfig pcscd off
chkconfig ntpd on
chkconfig kudzu off
chkconfig iptables off
chkconfig ip6tables off
chkconfig firstboot off
chkconfig xinetd off
chkconfig smartd off
chkconfig isdn off
chkconfig rhnsd off
chkconfig gpm off
chkconfig xfs off
chkconfig cups-config-daemon off
chkconfig cups off
chkconfig yum-updatesd off
chkconfig bluetooth off
chkconfig portmap on
chkconfig nfs on
chkconfig nfslock on
chkconfig nscd on# make sure default runlevel is 3
sed -i “s/^id:5:init/id:3:init/g” /etc/inittab#enable listening to break on serial
sed -i “s/^kernel.sysrq = 0/kernel.sysrq = 1/g” /etc/sysctl.confecho “ttyS0” >> /etc/securetty
echo “as:123456:respawn:/sbin/agetty ttyS0 115200 -h vt100-nav” >> /etc/inittab# dom0_mem
sed -i “s/\(.*kernel.*xen.gz.*$\)/\1 dom0_mem=1024M/” /boot/grub/grub.conf
cat > /etc/xen/xend-config.sxp <(xend-unix-server yes)
(xend-relocation-server yes)
(xend-unix-path /var/lib/xend/xend-socket)
(xend-relocation-port 8002)
(xend-relocation-address ”)
(xend-relocation-hosts-allow ‘^localhost$ ^xen$’)
(network-script ‘network-bridge netdev=bond0’)
(vif-script vif-bridge)
(dom0-min-mem 256)
(dom0-cpus 0)(vncpasswd ”)
EOF