CentOS 6.7 安装KVM

# 假如已经安装了旧版的 kvm，先删除它来避免冲突
yum remove kvm
# 核意地安装依赖性组件，因为 KVM RPM 不是通过 yum 来安装
yum install zlib-devel alsa-lib-devel SDL-devel gnutls-devel dev86 texi2html glibc-devel.i386
安装KVM

yum groupinstall Virtualization 'Virtualization Client' 'Virtualization Platform' 'Virtualization Tools'

Virtualization:提供虚拟机的环境,主要包含qumu-kvm
virtualization-client:管理和安装虚拟机实例的客户端，主要有python-virtinst,virt-manager,virt-viewer
virtualization-platform:提供访问和控制虚拟客户端的接口，主要有libvirt，libvirt-client

virtualization-tools:管理离线虚拟机镜像的工具，主要有libguestfs根据需求选择软件包。

开启libvirtd服务操作
service libvirtd restart
chkconfig libvirtd on
chkconfig --list libvirtd
验证是否已经载入KVM模块
[root@localhost ~]# lsmod |grep kvm
kvm_intel              55624 0
kvm                   341551 1 kvm_intel
注: 如果没有显示kvm-intel内核模块,就说明宿主机 VT可能在BIOS里被关闭了,请开启

配置网络：
宿主机安装网桥工具bridge-utils
[root@localhost ~]# yum install bridge-utils
Loaded plugins: fastestmirror
Setting up Install Process
Loading mirror speeds from cached hostfile
Package bridge-utils-1.2-10.el6.x86_64 already installed and latest version
Nothing to do

[root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-em1
DEVICE=em1
TYPE=Ethernet
UUID=8a25c42c-36c6-4b30-866e-2e99c98af6a8
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
HWADDR=44:A8:42:40:38:A0
BRIDGE="br0"
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System em1"

[root@local ~]# vim /etc/sysconfig/network-scripts/ifcfg-br0
DEVICE=br0
TYPE=Bridge
BOOTPROTO=static
IPADDR=10.1.4.99
PREFIX=24
GATEWAY=10.1.4.254
DNS1=114.114.114
DNS2=8.8.8.8
NM_CONTROLLED=no
ONBOOT=yes

重起网络服务service network restart
验证网络
[root@localhost ~]# brctl show
bridge name   bridge id       STP enabled   interfaces
br0       8000.44a8424038a0   no       em1
virbr0       8000.5254001bda9c   yes       virbr0-nic

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