xen虚拟化
配置yum源
# cd/etc/yum.repos.d
# ls
centos.repo kernel-xen.repo xen4.repo
# vim kernel-xen.repo
[kernel-xen]
name=kernel-xen
baseurl=http://xenbits.xen.org/people/mayoung/testing/x86_64/
gpgcheck=0
# vim xen4.repo
[xen4]
name=xen4
baseurl=http://mirrors.sohu.com/centos/6/xen4/x86_64/
gpgcheck=0
yum源里的rpm包
# ls /kernel-xen/
kernel-2.6.32-131.21.1.el6.xendom0.x86_64.rpm
kernel-debug-2.6.32-131.21.1.el6.xendom0.x86_64.rpm
kernel-debug-debuginfo-2.6.32-131.21.1.el6.xendom0.x86_64.rpm
kernel-debug-devel-2.6.32-131.21.1.el6.xendom0.x86_64.rpm
kernel-debuginfo-2.6.32-131.21.1.el6.xendom0.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-131.21.1.el6.xendom0.x86_64.rpm
kernel-devel-2.6.32-131.21.1.el6.xendom0.x86_64.rpm
kernel-doc-2.6.32-131.21.1.el6.xendom0.noarch.rpm
kernel-firmware-2.6.32-131.21.1.el6.xendom0.noarch.rpm
kernel-headers-2.6.32-131.21.1.el6.xendom0.x86_64.rpm
perf-2.6.32-131.21.1.el6.xendom0.x86_64.rpm
perf-debuginfo-2.6.32-131.21.1.el6.xendom0.x86_64.rpm
repodata
# ls /xen4
e1000e-2.4.14-3.4.53.1.el6.centos.alt.x86_64.rpm
e1000e-2.4.14-3.4.54.1.el6.centos.alt.x86_64.rpm
e1000e-2.4.14-3.4.59.1.el6.centos.alt.x86_64.rpm
e1000e-2.4.14-3.4.61.2.el6.centos.alt.x86_64.rpm
ipxe-bootimgs-20120328-2.gitaac9718.el6.centos.alt.noarch.rpm
ipxe-roms-20120328-2.gitaac9718.el6.centos.alt.noarch.rpm
ipxe-roms-qemu-20120328-2.gitaac9718.el6.centos.alt.noarch.rpm
kernel-3.4.46-8.el6.centos.alt.x86_64.rpm
kernel-3.4.50-8.el6.centos.alt.x86_64.rpm
kernel-3.4.53-8.el6.centos.alt.x86_64.rpm
kernel-3.4.54-8.el6.centos.alt.x86_64.rpm
kernel-3.4.59-8.el6.centos.alt.x86_64.rpm
kernel-3.4.61-9.el6.centos.alt.x86_64.rpm
kernel-devel-3.4.46-8.el6.centos.alt.x86_64.rpm
kernel-devel-3.4.50-8.el6.centos.alt.x86_64.rpm
kernel-devel-3.4.53-8.el6.centos.alt.x86_64.rpm
kernel-devel-3.4.54-8.el6.centos.alt.x86_64.rpm
kernel-devel-3.4.59-8.el6.centos.alt.x86_64.rpm
kernel-devel-3.4.61-9.el6.centos.alt.x86_64.rpm
kernel-doc-3.4.46-8.el6.centos.alt.noarch.rpm
kernel-doc-3.4.50-8.el6.centos.alt.noarch.rpm
kernel-doc-3.4.53-8.el6.centos.alt.noarch.rpm
kernel-doc-3.4.54-8.el6.centos.alt.noarch.rpm
kernel-doc-3.4.59-8.el6.centos.alt.noarch.rpm
kernel-doc-3.4.61-9.el6.centos.alt.noarch.rpm
kernel-firmware-3.4.46-8.el6.centos.alt.noarch.rpm
kernel-firmware-3.4.50-8.el6.centos.alt.noarch.rpm
kernel-firmware-3.4.53-8.el6.centos.alt.noarch.rpm
kernel-firmware-3.4.54-8.el6.centos.alt.noarch.rpm
kernel-firmware-3.4.59-8.el6.centos.alt.noarch.rpm
kernel-firmware-3.4.59-9.el6.centos.alt.noarch.rpm
kernel-firmware-3.4.61-9.el6.centos.alt.noarch.rpm
kernel-headers-3.4.46-8.el6.centos.alt.x86_64.rpm
kernel-headers-3.4.50-8.el6.centos.alt.x86_64.rpm
kernel-headers-3.4.53-8.el6.centos.alt.x86_64.rpm
kernel-headers-3.4.54-8.el6.centos.alt.x86_64.rpm
kernel-headers-3.4.59-8.el6.centos.alt.x86_64.rpm
kernel-headers-3.4.61-9.el6.centos.alt.x86_64.rpm
libvirt-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-client-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-client-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-client-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-config-network-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-config-network-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-config-network-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-config-nwfilter-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-config-nwfilter-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-config-nwfilter-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-interface-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-interface-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-interface-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-libxl-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-libxl-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-libxl-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-lxc-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-lxc-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-lxc-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-network-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-network-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-network-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-nodedev-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-nodedev-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-nodedev-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-nwfilter-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-nwfilter-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-nwfilter-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-qemu-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-qemu-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-qemu-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-secret-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-secret-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-secret-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-storage-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-storage-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-storage-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-xen-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-xen-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-driver-xen-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-kvm-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-kvm-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-kvm-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-lxc-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-lxc-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-lxc-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-xen-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-xen-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-daemon-xen-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-devel-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-devel-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-devel-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-docs-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-docs-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-docs-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-lock-sanlock-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-lock-sanlock-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-lock-sanlock-0.10.2.7-5.el6.centos.alt.x86_64.rpm
libvirt-python-0.10.2.4-5.el6.centos.alt.x86_64.rpm
libvirt-python-0.10.2.6-5.el6.centos.alt.x86_64.rpm
libvirt-python-0.10.2.7-5.el6.centos.alt.x86_64.rpm
perf-3.4.46-8.el6.centos.alt.x86_64.rpm
perf-3.4.50-8.el6.centos.alt.x86_64.rpm
perf-3.4.53-8.el6.centos.alt.x86_64.rpm
perf-3.4.54-8.el6.centos.alt.x86_64.rpm
perf-3.4.59-8.el6.centos.alt.x86_64.rpm
perf-3.4.61-9.el6.centos.alt.x86_64.rpm
python-virtinst-0.600.0-16.el6.centos.alt.noarch.rpm
repodata
seabios-1.7.1-1.el6.centos.alt.x86_64.rpm
seabios-bin-1.7.1-1.el6.centos.alt.noarch.rpm
xen-4.2.2-22.el6.centos.alt.x86_64.rpm
xen-4.2.2-23.el6.centos.alt.x86_64.rpm
xen-4.2.3-23.el6.centos.alt.x86_64.rpm
xen-devel-4.2.2-22.el6.centos.alt.x86_64.rpm
xen-devel-4.2.2-23.el6.centos.alt.x86_64.rpm
xen-devel-4.2.3-23.el6.centos.alt.x86_64.rpm
xen-doc-4.2.2-22.el6.centos.alt.x86_64.rpm
xen-doc-4.2.2-23.el6.centos.alt.x86_64.rpm
xen-doc-4.2.3-23.el6.centos.alt.x86_64.rpm
xen-hypervisor-4.2.2-22.el6.centos.alt.x86_64.rpm
xen-hypervisor-4.2.2-23.el6.centos.alt.x86_64.rpm
xen-hypervisor-4.2.3-23.el6.centos.alt.x86_64.rpm
xen-libs-4.2.2-22.el6.centos.alt.x86_64.rpm
xen-libs-4.2.2-23.el6.centos.alt.x86_64.rpm
xen-libs-4.2.3-23.el6.centos.alt.x86_64.rpm
xen-licenses-4.2.2-22.el6.centos.alt.x86_64.rpm
xen-licenses-4.2.2-23.el6.centos.alt.x86_64.rpm
xen-licenses-4.2.3-23.el6.centos.alt.x86_64.rpm
xen-ocaml-4.2.2-22.el6.centos.alt.x86_64.rpm
xen-ocaml-4.2.2-23.el6.centos.alt.x86_64.rpm
xen-ocaml-4.2.3-23.el6.centos.alt.x86_64.rpm
xen-ocaml-devel-4.2.2-22.el6.centos.alt.x86_64.rpm
xen-ocaml-devel-4.2.2-23.el6.centos.alt.x86_64.rpm
xen-ocaml-devel-4.2.3-23.el6.centos.alt.x86_64.rpm
xen-runtime-4.2.2-22.el6.centos.alt.x86_64.rpm
xen-runtime-4.2.2-23.el6.centos.alt.x86_64.rpm
xen-runtime-4.2.3-23.el6.centos.alt.x86_64.rpm
安装rpm包
# yum install kernel-xenxen xen-runtime xen-libs
# ll /boot | grepxen
-rw-r--r-- 1 root root 806912 Sep 12 01:46 xen-4.2.3-23.el6.gz
lrwxrwxrwx 1 root root 19 Nov 17 10:09 xen-4.2.gz ->xen-4.2.3-23.el6.gz
lrwxrwxrwx 1 root root 19 Nov 17 10:09 xen.gz ->xen-4.2.3-23.el6.gz
-rw-r--r-- 1 root root 14608999 Sep 12 01:46xen-syms-4.2.3-23.el6
修改内核
先让cpu支持硬件虚拟化，可以启用更多功能。
# vim /etc/grub.conf
default=0
timeout=5
splashp_w_picpath=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Red Hat EnterpriseLinux Server (3.4.61-9.el6.centos.alt.x86_64)
root(hd0,0)
kernel /xen.gz dom0_mem=500M cpufreq=xen dom0_max_vcpus=2 dom0_vcpus_pin
module /vmlinuz-3.4.61-9.el6.centos.alt.x86_64ro root=/dev/mapper/vg0-root rd_NO_LUKS rd_NO_DM LANG=en_US.UTF-8rd_LVM_LV=vg0/swap rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=autord_LVM_LV=vg0/root KEYBOARDTYPE=pc KEYTABLE=usrhgb crashkernel=auto quiet rhgb quiet
module /initramfs-3.4.61-9.el6.centos.alt.x86_64.img
title Red Hat EnterpriseLinux (2.6.32-358.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-358.el6.x86_64ro root=/dev/mapper/vg0-root rd_NO_LUKS rd_NO_DM LANG=en_US.UTF-8rd_LVM_LV=vg0/swap rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=autord_LVM_LV=vg0/root KEYBOARDTYPE=pcKEYTABLE=us rhgb crashkernel=auto quiet rhgb quiet
initrd/initramfs-2.6.32-358.el6.x86_64.img
蓝颜色的部分没有装xen包之前是不存在的。
# reboot
# ls /proc/xen
capabilities privcmd xenbus
如果capabilities存在，说明xen运行正常。
# cat/proc/xen/capabilities
control_d
# yum -yinstall libvirt
# service libvirtdstart
# brctl show
管理桥
# virsh
也可以管理桥
# cd/etc/sysconfig/network-scripts/
# cp ifcfg-eth0ifcfg-br0
# vim ifcfg-br0
DEVICE=br0
TYPE=Ethernet
ONBOOT=yes
BOOTPROTO=static
TYPE=Bridge
IPADDR=192.168.137.251
GATEWAY=192.168.137.1
# vim ifcfg-eth0
DEVICE=eth0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=yes
BRIDGE=br0
# ifconfig
br0 Link encap:Ethernet HWaddr 00:0C:29:20:C7:A4
inet addr:192.168.137.251 Bcast:192.168.137.255 Mask:255.255.255.0
inet6 addr:fe80::20c:29ff:fe20:c7a4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:240 errors:0 dropped:0overruns:0 frame:0
TX packets:192 errors:0 dropped:0overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:30495 (29.7 KiB) TX bytes:23112 (22.5 KiB)
eth0 Link encap:Ethernet HWaddr 00:0C:29:20:C7:A4
inet6 addr:fe80::20c:29ff:fe20:c7a4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10063 errors:0 dropped:0overruns:0 frame:0
TX packets:5889 errors:0 dropped:0overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7984544 (7.6 MiB) TX bytes:708451 (691.8 KiB)
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:0 errors:0 dropped:0overruns:0 frame:0
TX packets:0 errors:0 dropped:0overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
virbr0 Link encap:Ethernet HWaddr 6A:C7:DD:42:05:93
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0overruns:0 frame:0
TX packets:0 errors:0 dropped:0overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
好了，桥建好了，我们就可以通过桥创建一个虚拟机，来让虚拟机链接到dom0上了。
# yum -y install virt-manager
装xen的时候，virt-manager 需要单独装，装kvm时，一个virtualization 包组就包含了这个工具。
# virt-manager
Traceback (mostrecent call last):
File"/usr/share/virt-manager/virt-manager.py", line 383, in
main()
File"/usr/share/virt-manager/virt-manager.py", line 248, in main
cli.setup_i18n(gettext_app, gettext_dir)
File"/usr/share/virt-manager/virtManager/cli.py", line 90, in setup_i18n
locale.setlocale(locale.LC_ALL, '')
File"/usr/lib64/python2.6/locale.py", line 513, in setlocale
return _setlocale(category, locale)
locale.Error:unsupported locale setting
解决办法
# export LC_ALL=C
LC_ALL=C是为了去除所有本地化的设置，让命令能正确执行。
# virt-manager //只有在xend服务启动后，在能运行。
好了，下面就可以新建虚拟机了，只需要注意选择安装方式和内存分配合理就可以了。
装好一个，可以克隆另一个。
不使用图形界面启动虚拟机
方法一:
# cd/etc/xen
# vimtest
Kernel="/tmp/vmlinuz-2.6.18-308.el5xen" //虚拟机启动后/boot目录下的文件，需要虚拟机安装完成后去复制
Ramdisk="/tmp/initrd-2.6.18-308.el5xen.img" //虚拟机启动后/boot目录下的文件，需要虚拟机安装完成后去复制
Name="test"
Memory=512
Vcpus=2
Root="/dev/vol0/rootro"
Extra="rhgbquiet"
Vif=['bridge=xenbr0']
Disk=['file:/var/lib/libvirt/p_w_picpaths/test.img,xvda,w']
# xmcreate test
# xm list
# xm console test //查看启动过程，推出"ctrl+]"
方法二:
# vimtest2
Bootloader="/usr/bin/pygrub" //不需要用到引导内核，直接使用虚拟机自己的内核
Name="test2"
Memory=512
Vcpus=2
Vif=['bridge=xenbr0']
Disk=['file:/var/lib/libvirt/p_w_picpaths/test.img,xvda,w']
On_reboot='restart'
On_crash='destroy'
Vfb=['vnc=1,vnclisten=0.0.0.0,vncpasswd=vpass'] #定义帧缓冲
# xm create -c test2 //-c 立即链接到控制台
domu中按装运行Redhat 5，要使用p_w_picpaths，/etc/xen目录下的专用内核,redhat5没有收录xen的模块
kvm虚拟化
Kvm只能在64位系统上运行
一、检验cpu是否支持硬件虚拟化
# grep -o -E 'svm|vmx'/proc/cpuinfo
Svm AMD的cpu
Vmx intel的cpu
二、加载两个模块
如果是intel的cpu
# modprobe kvm
# modprobe kvm_intel
如果是amd的cpu
# modprobe kvm
# modprobe kvm_amd
# lsmod | grep kvm
kvm_intel 53484 0
kvm 316506 1 kvm_intel
# ls /dev | grep kvm
kvm #虚拟的设备文件，kvm的api，对虚拟机的操作都要通过这个接口
此时，说明系统已经可以虚拟化了。
kvm跟qemu结合起来才能更好地完成虚拟化
# yum -y groupinstall“Virtualization”
# yum groupinfo"Virtualization"
Loaded plugins:fastestmirror
Setting up GroupProcess
Loading mirrorspeeds from cached hostfile
Group:Virtualization
Description:Provides an environment for hosting virtualized guests.
Mandatory Packages:
qemu-kvm
Default Packages:
hypervkvpd
Optional Packages:
qemu-guest-agent
qemu-kvm-tools
# yum -y groupinstall“Virtualization Platform” “Virtualization Client”
VirtualizationPlatform 相关库
# yum groupinfo"Virtualization Platform"
Loaded plugins:fastestmirror
Setting up GroupProcess
Loading mirrorspeeds from cached hostfile
Group:Virtualization Platform
Description:Provides an interface for accessing and controlling virtualized guests andcontainers.
Mandatory Packages:
libvirt
libvirt-client
virt-who
Optional Packages:
fence-virtd-libvirt
fence-virtd-multicast
fence-virtd-serial
libvirt-cim
libvirt-java
libvirt-snmp
perl-Sys-Virt
# yum groupinfo"Virtualization Client"
Loaded plugins:fastestmirror
Setting up GroupProcess
Loading mirrorspeeds from cached hostfile
Group:Virtualization Client
Description:Clients for installing and managing virtualization instances.
Mandatory Packages:
python-virtinst
virt-manager
virt-viewer
Default Packages:
virt-top
# ls/usr/libexec/qemu-kvm
/usr/libexec/qemu-kvm # 这是一个命令
# ln -sv/usr/libexec/qemu-kvm /usr/bin/qemu
# qemu-cpu ? 查看可以模拟哪种类型的cpu
# qemu -M ? 查看可以模拟的架构
Supported machines are:
pc RHEL 6.4.0 PC (alias of rhel6.4.0)
rhel6.4.0 RHEL 6.4.0 PC (default)
rhel6.3.0 RHEL 6.3.0 PC
rhel6.2.0 RHEL 6.2.0 PC
rhel6.1.0 RHEL 6.1.0 PC
rhel6.0.0 RHEL 6.0.0 PC
rhel5.5.0 RHEL 5.5.0 PC
rhel5.4.4 RHEL 5.4.4 PC
rhel5.4.0 RHEL 5.4.0 PC
qemu命令可以创建，启动，安装虚拟机
# qemu -img 创建映像文件
# service libvirtd start
# ifconfig
Eth0
Lo
Virbr0
# yum -y installbridge-utils
# virsh iface-bridge eth0 br0
#ifconfig
Br0
Eth0
Lo
Virbr0
遇到报错，cant find eth0 or br0 already exsit只了到错误不要急，解决办法如下：
重新编写eth0网卡信息，将br0网卡备份，然后再执行命令virsh iface-bridge eth0 br0
问题解决。
接下来装操作系统
错误问题解决：
利用Xshell安装虚拟机的时候，很多按键都会错乱，这时，我们可以选择使用putty和Xming两个软件结合使用来完成安装。Putty+Xming=Xshell+Xmanager
Windows上安装putty和Xming
# virt-manager
Traceback (most recentcall last):
File"/usr/share/virt-manager/virt-manager.py", line 383, in
main()
File"/usr/share/virt-manager/virt-manager.py", line 286, in main
raise gtk_error
RuntimeError: could notopen display
点击Xming启动
配置putty
# virt-manager
process 3554: D-Buslibrary appears to be incorrectly set up; failed to read machine uuid: Failedto open "/var/lib/dbus/machine-id": No such file or directory
See the manual page fordbus-uuidgen to correct this issue.
D-Bus not built with -rdynamic so unable toprint a backtrace
Aborted
解决方案
# mkdir /var/lib/dbus
# dbus-uuidgen > /var/lib/dbus/machine-id
# virt-manager
当出现乱码
安装包组
# yum -y groupinstall “ X Window System”
# virt-manager
虚拟机装完后的镜像文件 /var/lib/libvirt/p_w_picpaths/
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命令行下安装虚拟机
#mkdir -pv /VMs/p_w_picpaths
#chown -R root:kvm /dev/kvm
#virt-install \
--connect qemu:///system\
--virt-type kvm \
--name centos6 \
--ram 512 \
--vcpus 2 \
--network bridge=br0 \
--diskpath=/VMs/p_w_picpaths/centos6.img,size=120,sparse \
--locationhttp://192.168.137.111/cobbler/ks_mirror/centos-6.4-x86_64/ \
--extra-args"ks=http://192.168.137.111/centos6.x86_64.cfg" \
--os-variant rhel6 \
--force