First disable selinux
Then give a hostname such as server1.sourav.com and an IP Address to an adapter
if this command shows some output then your processor is ready
egrep '(vmx|svm)' --color=always /proc/cpuinfo
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY*
yum install kvm libvirt python-virtinst qemu-kvm
Then start the libvirt daemon
Then start the libvirt daemon
/etc/init.d/libvirtd start
it will not start unless hosts is properly configured
like the entry 127.0.0.1 localhost
and
10.10.*.* server1.sourav.com server1
should be there
it will not start unless hosts is properly configured
like the entry 127.0.0.1 localhost
and
10.10.*.* server1.sourav.com server1
should be there
To check if KVM has successfully been installed
virsh -c qemu:///system list
It should display something like this:
[root@server1 ~]# virsh -c qemu:///system list
Id Name State
Now set up network bridge
yum install bridge-utils
vi /etc/sysconfig/network-scripts/ifcfg-br0
DEVICE="br0"
NM_CONTROLLED="yes"
ONBOOT=yes
TYPE=Bridge
BOOTPROTO=none
IPADDR=192.168.0.100
PREFIX=24
GATEWAY=192.168.0.1
DNS1=8.8.8.8
DNS2=8.8.4.4
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System br0"
Modify /etc/sysconfig/network-scripts/ifcfg-eth0 as
follows (comment out BOOTPROTO, IPADDR, PREFIX, GATEWAY, DNS1, and DNS2 and add BRIDGE=br0):
DEVICE="eth0"
#BOOTPROTO=none
NM_CONTROLLED="yes"
ONBOOT=yes
TYPE="Ethernet"
UUID="73cb0b12-1f42-49b0-ad69-731e888276ff"
HWADDR=00:1E:90:F3:F0:02
#IPADDR=192.168.0.100
#PREFIX=24
#GATEWAY=192.168.0.1
#DNS1=8.8.8.8
#DNS2=8.8.4.4
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System eth0"
BRIDGE=br0
Now
/etc/init.d/network restart
yum install virt-manager libvirt qemu-system-x86 openssh-askpass
We will create our image-based virtual machines in the directory /var/lib/libvirt/images/ which was created automatically when we installed KVM in chapter two.
To create a Debian Squeeze guest (in bridging mode) with the name vm10, 512MB of RAM, two virtual CPUs, and the disk image /var/lib/libvirt/images/vm10.img (with a size of 12GB), insert the Debian Squeeze Netinstall CD into the CD drive and run
virt-install --connect qemu:///system -n vm10 -r 512 --vcpus=2 --disk path=/var/lib/libvirt/images/vm10.img,size=12 -c /dev/cdrom --vnc --noautoconsole --os-type linux --os-variant debiansqueeze --accelerate --network=bridge:br0 --hvm
Of course, you can also create an ISO image of the Debian Squeeze Netinstall CD (please create it in the /var/lib/libvirt/images/ directory because later on I will show how to create virtual machines through virt-manager from your Fedora desktop, and virt-manager will look for ISO images in the /var/lib/libvirt/images/ directory)...
dd if=/dev/cdrom of=/var/lib/libvirt/images/debian-6.0.5-amd64-netinst.iso
dd if=/dev/cdrom of=/var/lib/libvirt/images/debian-6.0.5-amd64-netinst.iso
... and use the ISO image in the virt-install command:
virt-install --connect qemu:///system -n vm10 -r 512 --vcpus=2 --disk path=/var/lib/libvirt/images/vm10.img,size=12 -c /var/lib/libvirt/images/debian-6.0.5-amd64-netinst.iso --vnc --noautoconsole --os-type linux --os-variant debiansqueeze --accelerate --network=bridge:br0 --hvm
The output is as follows:
[root@server1 ~]# virt-install --connect qemu:///system -n vm10 -r 512 --vcpus=2 --disk path=/var/lib/libvirt/images/vm10.img,size=12 -c /var/lib/libvirt/images/debian-6.0.5-amd64-netinst.iso --vnc --noautoconsole --os-type linux --os-variant debiansqueeze --accelerate --network=bridge:br0 --hvm
Starting install...
Allocating 'vm10.img' | 12 GB 00:00
Creating domain... | 0 B 00:00
Domain installation still in progress. You can reconnect to
the console to complete the installation process.
Now go to Applications-System Tools-Virtual Machine Manager
There you will see the virtual machine running
click open
the virtual machine will start in GUI
When you start virt-manager for the first time, you will most likely see the message Unable to open a connection to the libvirt management daemon. You can ignore this because we don't want to connect to the local libvirt daemon, but to the one on our CentOS 6.4 KVM host. Click on Close and go to File > Add Connection... to connect to our CentOS 6.4 KVM host:
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