这篇文章主要介绍了kvm虚拟化学习笔记(一)之kvm虚拟化环境安装的步骤，非常具有实用价值，需要的朋友可以参考下。
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
chkconfig ip6tables off chkconfig iptables off
(4)重启
# reboot
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。
#egrep '(vmx|svm)' --color=always /proc/cpuinfo
(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
#yum -y install kvm python-virtinst libvirt tunctl bridge-utils virt-manager qemu-kvm-tools virt-viewer virt-v2v
过程略。
补充安装kvm虚拟化一些管理工具包
#yum -y install libguestfs-tools
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!
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
[root@node1~]#cd /etc/sysconfig/network-scripts/ [root@node1network-scripts]#cp ifcfg-eth0 ifcfg-br0 [root@node1network-scripts]# [root@node1network-scripts]#
[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
(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。
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