使用 yum 能够很方便的安装 CentOS 5.4 默认的 Xen；
(1) 制作本地yum源：
制作本地源的目的是使安装相对快一些。
将 CentOS 5.4 的DVD盘或者ISO镜像中的东西复制出来(可以 mount 出来)，挂载ISO镜像的命令是 mount -o loop *.iso /*** ；
将目录放到 apache http 服务器的目录下或者在 http 服务器下创建到镜像目录的软链接，例如 在 apache http web 主目录 /opt/apache-httpd-2.2.14/htdocs 下创建一个指向存储了 CentOS5.4镜像的目录；
最后 下是 CentOS 5.4 光盘中的东西；
安装 apache http 服务器
1121 cd /opt
1122 mkdir apache-httpd-2.2.14
1123 ls
1124 cd software/
1125 ls
1126 tar zxvf httpd-2.2.14.tar.gz
1127 ls
1128 cd httpd-2.2.14
1129 ls
1130 ./configure --prefix=/opt/apache-httpd-2.2.14 -enable-so -enable-proxy -enable-proxy-ajp -enable-proxy-http -enable-proxy-ftp -enable-proxy-connect -enable-proxy-balancer
1131 make
1132 make install
1136 cd /opt
1137 ls
1138 cd apache-httpd-2.2.14/
1139 ls
1140 cd conf/
1141 ls
1142 vim httpd.conf 更改Listen端口
1143 ls
1144 cd ..
1145 ls
1146 bin/apachectl
1147 bin/apachectl start 启动apache
1148 bin/apachectl status
1149 bin/apachectl stop 停止apache
Web 主目录是
[root@ htdocs]# pwd
/opt/apache-httpd-2.2.14/htdocs
或者直接使用官方镜像
(2) 修改 yum 配置文件：
[root@ ~]# vim /etc/yum.repos.d/CentOS-Base.repo
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[base]
name=CentOS-$releasever - Base
baseurl=http://10.10.97.6/mirror/centos/
# 或者官方镜像
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
#或者
#gpgkey=http://10.10.97.6/mirror/centos/RPM-GPG-KEY-CentOS-5
#released updates
[updates]
name=CentOS-$releasever - Updates
baseurl=http://10.10.97.6/mirror/centos/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
#packages used/produced in the build but not released
[addons]
name=CentOS-$releasever - Addons
baseurl=http://10.10.97.6/mirror/centos/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
baseurl=http://10.10.97.6/mirror/centos/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
baseurl=http://10.10.97.6/mirror/centos/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib
baseurl=http://10.10.97.6/mirror/centos/
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
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