CentOS 5
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Install KVM2015/01/16

 
It's Virtualization with KVM ( Kernel-based Virtual Machine ) + QEMU. This requires that the CPU on your computer has a function Intel VT or AMD-V.
[1] Install KVM.
[root@dlp ~]#
yum -y install kvm kmod-kvm kvm-qemu-img libvirt python-virtinst bridge-utils
[root@dlp ~]#
[root@dlp ~]#
modprobe kvm_intel
 
# if AMD, "kvm_amd"

[root@dlp ~]#
lsmod | grep kvm

kvm_intel
46589 0

kvm
292815 1 kvm_intel

[root@dlp ~]#
/etc/rc.d/init.d/libvirtd start

Starting libvirtd daemon:
[ OK ]

[root@dlp ~]#
chkconfig libvirtd on
[2] Configure Bridge networking.
[root@dlp ~]#
cd /etc/sysconfig/network-scripts

[root@dlp network-scripts]#
cp ifcfg-eth0 ifcfg-br0

[root@dlp network-scripts]#
vi ifcfg-br0
DEVICE=
br0
# change

BOOTPROTO=none
HWADDR=00:22:68:5e:34:06
ONBOOT=yes
DHCP_HOSTNAME=dlp.srv.world
IPADDR=10.0.0.30
NETMASK=255.255.255.0
GATEWAY=10.0.0.1
TYPE=
Bridge
# change
[root@dlp network-scripts]#
vi ifcfg-eth0
DEVICE=eth0
BOOTPROTO=none
HWADDR=00:22:68:5e:34:06
ONBOOT=yes
DHCP_HOSTNAME=dlp.srv.world
IPADDR=10.0.0.30
NETMASK=255.255.255.0
GATEWAY=10.0.0.1
TYPE=Ethernet
BRIDGE=br0
# add
[root@dlp network-scripts]#
[root@dlp ~]#
/etc/rc.d/init.d/network restart

Shutting down interface eth0:
[  OK  ]

Shutting down loopback interface:
[  OK  ]

Bringing up loopback interface:
[  OK  ]

Bringing up interface eth0:
[  OK  ]

Bringing up interface br0:
[  OK  ]

[root@dlp ~]#
br0       Link encap:Ethernet  HWaddr 00:0C:29:B3:4F:24
          inet addr:10.0.0.30  Bcast:10.0.0.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:feb3:4f24/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:44 errors:0 dropped:0 overruns:0 frame:0
          TX packets:55 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:3060 (2.9 KiB)  TX bytes:6950 (6.7 KiB)

eth0      Link encap:Ethernet  HWaddr 00:0C:29:B3:4F:24
          inet6 addr: fe80::20c:29ff:feb3:4f24/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:23278 errors:0 dropped:0 overruns:0 frame:0
          TX packets:15886 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:28955503 (27.6 MiB)  TX bytes:1971919 (1.8 MiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:5 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2880 (2.8 KiB)  TX bytes:2880 (2.8 KiB)

virbr0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          inet addr:192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
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