centos 6.3 64位 安装 Xen

yum update

sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config

reboot

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yum install bridge-utils

vi /etc/sysconfig/network-scripts/ifcfg-br0

DEVICE="br0"NM_CONTROLLED="yes"ONBOOT=yesTYPE=BridgeBOOTPROTO=noneIPADDR=IP地址PREFIX=24 IP地址段GATEWAY=IP网关DNS1=8.8.8.8DNS2=8.8.4.4DEFROUTE=yesIPV4_FAILURE_FATAL=yesIPV6INIT=noNAME="System br0"

vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE="eth0"NM_CONTROLLED="yes"ONBOOT=yesTYPE="Ethernet"UUID="跟原来文件里的一致"HWADDR=跟原来文件里的一致DEFROUTE=yesIPV4_FAILURE_FATAL=yesIPV6INIT=noNAME="System eth0"BRIDGE=br0

/etc/init.d/network restart

ifconfig

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wget http://au1.mirror.crc.id.au/repo/kernel-xen-release-6-4.noarch.rpm

rpm -ivh kernel-xen-release-6-4.noarch.rpm

yum install xen-libs kernel-xen xen kernel-xen-devel virt-manager bridge-utils libvirt libvirt-python python-virtinst gcc-c++

vi /boot/grub/menu.lst  查看xen内核引导应该是这样：

title CentOS (2.6.32.57-2.el6xen.x86_64)        root (hd0,0)        kernel /vmlinuz-2.6.32.57-2.el6xen.x86_64 ro root=/dev/mapper/vg_server1-LogVol00 rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto  KEYBOARDTYPE=pc KEYTABLE=de rd_LVM_LV=vg_server1/LogVol01 rd_LVM_LV=vg_server1/LogVol00 rd_NO_DM rhgb quiet        initrd /initramfs-2.6.32.57-2.el6xen.x86_64.img

改成

title CentOS (2.6.32.57-2.el6xen.x86_64)        root (hd0,0)        kernel /xen.gz dom0_mem=512M cpufreq=xen         module /vmlinuz-2.6.32.57-2.el6xen.x86_64 ro root=/dev/mapper/vg_server1-LogVol00 rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto  KEYBOARDTYPE=pc KEYTABLE=de rd_LVM_LV=vg_server1/LogVol01 rd_LVM_LV=vg_server1/LogVol00 rd_NO_DM rhgb quiet        module /initramfs-2.6.32.57-2.el6xen.x86_64.img

（网上很多文章，在 cpufreq=xen  后面都有 dom0_max_vcpus=1 dom0_vcpus_pin  测试发现，原来服务器上有8核的cpu，但是 cat /proc/cpuinfo 只能看到一个CPU了。去掉后，才恢复正常）

修改 default=1 为 default=0，从xen内核启动

reboot
uname -r 查看是否xen内核

pstree -p | grep xen 查看xen是否安装好

        |-xenconsoled(3062)---{xenconsoled}(3063)
        |-xend(3071)-+-{xend}(3072)
        |            |-{xend}(3073)
        |            |-{xend}(3117)
        |            |-{xend}(3118)
        |            |-{xend}(3119)
        |            |-{xend}(3120)
        |            `-{xend}(3121)
        |-xenstored(3053)
        `-xenwatchdogd(2934)