Install the KVM virtualization environment in centos6.0

I. KVM Installation

Simple Method: Yum install KVM

Ii. Install and upgrade libvirt

(1) Yum install libvirt-Python-y

(2) The default version is 0.8.1, which has few functions and can be upgraded to the latest version.

Wget ftp://libvirt.org/libvirt/libvirt-0.9.4.tar.gz
Tar xzvf libvirt-0.9.4.tar.gz

CD libvirt-0.9.4

./Configure

Most of the following situations may occur. If you have installed some packages, you may not need to perform any operations.

1 GCC compiler Not Installed

Yum-y install GCC gcc-C ++

2 libxml2 xml2-config> = 2.6.0... configure: Error: cocould not find libxml2 anywhere (see config. log for details ).
Yum install libxml2-devel
// Yum install xml2-* this is not required

3 configure: Error: You must install the gnutls library in order to compile and run libvirt

Yum install gnutls-devel

4 configure: Error: You must install device-mapper-devel/libdevmapper> = 1.0.0 to compile libvirt
Yum install device-mapper-devel

5 you must install Python-devel to build Python bindings

Yum install Python-devel

6. Configure: Error: libnl-devel> = 1.1 is required for macvtap support

Yum install libnl-devel

So far./configure should be available. The lazy uses this yum install libxml2-devel gnutls-devel device-mapper-devel Python-devel libnl-devel-y

(3) make & make install

Restart libmongod

Service libmongod restart

An error may be reported:

1 error: failed to connect socket to '/usr/local/var/run/libvirt-Sock': no such file or directory
Link:
Ln-S/var/run/libvirt-Sock/usr/local/var/run/libvirt-sock

2 libvirt: Remote error: Unable to connect to '/usr/local/var/run/libvirt-sock-ro': no such file or directory"

Make another link
Ln-S/var/run/libvirt-sock-RO/usr/local/var/run/libvirt-sock-ro

Iii. server network configuration-bridging to facilitate communication between virtual machines

In the bridging mode, the network configuration of the Ubuntu virtual machine running on centos is used as an example.

CD/etc/sysconfig/network-Scripts

CP ifcfg-eth0 ifcfg-br0 // modified after Replication

Modify the ifcfg-eth0 to the following

Device = eth0

Hwaddr = 00: E0: 81: D2: 7A: F1 // depending on the actual situation

Onboot = Yes

Bridge = br0

Modify the ifcfg-br0 to the following

Device = br0

Type = Bridge

Bootproto = static

Ipaddr = 10.88.0.27

Netmask = 255.255.255.0

Gateway = 10.88.0.1

Onboot = Yes

Restart Network Service Network restart
If you have a dual-nic and you need to configure two IP addresses, you can use the same method to create a bridge for eth1.