CentOS从6.0开始不再支持xen,因此如果是Centos6的话安装xen的话就不再像以前那样几个命令就能搞定了。总体来说需要如下几个步骤
1、 编译xen4.1.2
2、 编译支持xen的linux内核
3、 重新编译libvirtd,因为Centos6上默认的libvirtd不支持xen
4、 升级iptables以及bridge-util
首先,我们来看如何编译xen4.1.2
我安装的版本缺少了如下package(其实如果出错了,缺啥就安装啥就行了,无非是时间长了点儿)
uuid-dev
yum install -y uuid-devel.x86_64 libuuid-devel.x86_64
dev86
yum install -y dev86.x86_64
iasl
yum install -y iasl.x86_64
texinfo
yum install –y texinfo.x86_64
wget
tar xzf xen-4.1.2.tar.gz
cd xen-4.1.2
make world
make install
修改/etc/xen/xend-config.sxp
(xend-http-server yes)
(xend-unix-server yes)
在/etc/sysconfig/module下放入如下文件
#!/bin/sh
test -d /proc/xen || exit 0
test -f /proc/xen/capabilities || mount -t xenfs xen /proc/xen
test -f /proc/xen/capabilities || exit 0
grep -q "control_d" /proc/xen/capabilities || exit 0
for module in xen-evtchn evtchn xen-gntdev gntdev xen-blkback xen-netback blkbk netbk blktap; do
modprobe ${module} >/dev/null 2>&1
done
接下来看一下如何编译libvirtd
我系统上需要如下package
device-mapper-devel
yum install –y device-mapper-devel.x86_64
libnl-devel
yum install -y libnl-devel.x86_64
wget
tar –xzf libvirt-0.9.11.3.tar.gz
./configure --prefix=/usr --localstatedir=/var --sysconfdir=/etc --with-xen --with-xen-inotify --with-libxl
make
make install
安装完之后利用service libvirtd start结果发现报错,这是因为原来的libvirtd版本太低导致的,应该把原来的卸载
编译支持xen的linux内核
git clone git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git linux-2.6-xen
cd linux-2.6-xen
git checkout -b xen/next-2.6.32 origin/xen/next-2.6.32
wget -O .config
make oldconfig
make -j4 bzImage && make -j4 modules && make modules_install
depmod -a 2.6.32.57
cp -a arch/x86/boot/bzImage /boot/vmlinuz-2.6.32.57
cp -a System.map /boot/System.map-2.6.32.57
cp -a .config /boot/config-2.6.32.57
dracut initramfs-2.6.32.57.img 2.6.32.57
接下来是修改/etc/grub.conf
增加如下行
title CentOS with Xen (2.6.32.57.x86_64)
root (hd0,0)
kernel /xen.gz
module /vmlinuz-2.6.32.57 ro root=UUID=63b4f94b-abc7-4736-b87e-884a048d0c58 rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=
zh_CN.UTF-8 KEYBOARDTYPE=pc KEYTABLE=us nomodeset crashkernel=128M rhgb quiet
module /initramfs-2.6.32.57.img
编译bridge-utils相对比较容易
git clone git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/bridge-utils.git
autoconf
./configure --prefix=/usr
make
make install