平时一直玩rhel/centos/oel系列的操作，玩虚拟化也是采这一类系统,kvm在rhel6系列操作系统支持比较好，本文采用采用oel6.3操作系统，网上所有文章都说kvm比xen简单，我怎么感觉kvm比较复杂，可能是它的工具太多了吧，所以决定开始记录kvm的学习过程。
1.操作系统安装
本文采用oel6.3x64操作系统，也可以采用rhel/centos6.x。
(1)修改内核模式为兼容内核启动
(2)关闭selinux，重启后生效
(3)关闭防火墙
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chkconfig ip6tables off
chkconfig iptables off
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(4)重启
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# reboot
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2.虚拟化环境配置
(1)查看是否支持虚拟机
说明1:半虚拟化是不能运行与安装kvm虚拟机的。
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#egrep '(vmx|svm)' --color=always /proc/cpuinfo
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(2)配置yum环境
oel6.3已经配置好源，只需要开启即可。
(3)安装kvm软件包
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#yum -y install kvm python-virtinst libvirt tunctl bridge-utils virt-manager qemu-kvm-tools virt-viewer virt-v2v
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过程略。
补充安装kvm虚拟化一些管理工具包
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#yum -y install libguestfs-tools
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loaded plugins: refresh-packagekit, security
setting up install process
resolving dependencies
--> running transaction check
---> package libguestfs-tools.x86_64 1:1.16.34-2.el6 will be installed
--> processing dependency: libguestfs-tools-c = 1:1.16.34-2.el6 for package: 1:libguestfs-tools-1.16.34-2.el6.x86_64
--> processing dependency: perl(xml::writer) for package: 1:libguestfs-tools-1.16.34-2.el6.x86_64
--> processing dependency: /usr/bin/guestmount for package: 1:libguestfs-tools-1.16.34-2.el6.x86_64
--> running transaction check
---> package libguestfs-tools-c.x86_64 1:1.16.34-2.el6 will be installed
--> processing dependency: libconfig.so.8()(64bit) for package: 1:libguestfs-tools-c-1.16.34-2.el6.x86_64
---> package perl-xml-writer.noarch 0:0.606-6.el6 will be installed
--> running transaction check
---> package libconfig.x86_64 0:1.3.2-1.1.el6 will be installed
--> finished dependency resolution
dependencies resolved
=====================================================================================================================
package arch version repository size
=====================================================================================================================
installing:
libguestfs-tools x86_64 1:1.16.34-2.el6 ol6_latest 94 k
installing for dependencies:
libconfig x86_64 1.3.2-1.1.el6 ol6_latest 50 k
libguestfs-tools-c x86_64 1:1.16.34-2.el6 ol6_latest 850 k
perl-xml-writer noarch 0.606-6.el6 ol6_latest 26 k
transaction summary
=====================================================================================================================
install 4 package(s)
total download size: 1.0 m
installed size: 3.6 m
is this ok [y/n]: y
downloading packages:
(1/4): libconfig-1.3.2-1.1.el6.x86_64.rpm | 50 kb 00:00
(2/4): libguestfs-tools-1.16.34-2.el6.x86_64.rpm | 94 kb 00:00
(3/4): libguestfs-tools-c-1.16.34-2.el6.x86_64.rpm | 850 kb 00:04
(4/4): perl-xml-writer-0.606-6.el6.noarch.rpm | 26 kb 00:00
---------------------------------------------------------------------------------------------------------------------
total 115 kb/s | 1.0 mb 00:08
running rpm_check_debug
running transaction test
transaction test succeeded
running transaction
installing : libconfig-1.3.2-1.1.el6.x86_64 1/4
installing : 1:libguestfs-tools-c-1.16.34-2.el6.x86_64 2/4
installing : perl-xml-writer-0.606-6.el6.noarch 3/4
installing : 1:libguestfs-tools-1.16.34-2.el6.x86_64 4/4
verifying : perl-xml-writer-0.606-6.el6.noarch 1/4
verifying : libconfig-1.3.2-1.1.el6.x86_64 2/4
verifying : 1:libguestfs-tools-c-1.16.34-2.el6.x86_64 3/4
verifying : 1:libguestfs-tools-1.16.34-2.el6.x86_64 4/4
installed:
libguestfs-tools.x86_64 1:1.16.34-2.el6
dependency installed:
libconfig.x86_64 0:1.3.2-1.1.el6 libguestfs-tools-c.x86_64 1:1.16.34-2.el6 perl-xml-writer.noarch 0:0.606-6.el6
complete!
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3.查看虚拟化环境
(1)查看虚拟机环境
(2)查看kvm模块支持
(3)查看虚拟工具版本
4.手动配置虚拟网桥
(1)关闭networkmanager服务
(2)创建br0网桥
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[root@node1~]#cd /etc/sysconfig/network-scripts/
[root@node1network-scripts]#cp ifcfg-eth0 ifcfg-br0
[root@node1network-scripts]#
[root@node1network-scripts]#
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[root@node1network-scripts]#vi ifcfg-eth0
device="eth0"
bootproto=static
nm_controlled="no"
onboot=yes
type="ethernet"
bridge="br0"
uuid="99dde4d3-94f1-4293-b8a8-b10255d5b8be"
hwaddr=00:0c:29:47:41:8c
ipaddr=192.168.233.130
prefix=24
gateway=192.168.233.2
dns1=192.168.233.2
defroute=yes
ipv4_failure_fatal=yes
ipv6init=no
name="systemeth0"
[root@node1network-scripts]#
[root@node1network-scripts]#vi ifcfg-br0
device="br0"
bootproto=static
onboot=yes
type="bridge"
hwaddr=00:0c:29:47:41:8c
ipaddr=192.168.233.130
prefix=24
gateway=192.168.233.2
dns1=192.168.233.2
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(3)关闭了networkmanager服务之后，才能通过servicenetworkrestart管理网络。
(4)查看网桥br0.
(4)查看网桥
到此kvm虚拟化环境安装完毕。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://koumm.blog.51cto.com/703525/1288795