实施原理：TFTP+DHCP+NFS+VSFTPD
利用TFTP广播，使客户端获得相应的安装信息
利用DHCP来获取网络地址信息
利用NFS共享安装过程中需要的TFTP文件
利用FTP来下载安装过程中的光盘信息
实施步骤：
（一）：安装YUM,以简化服务器搭建时RPM包的安装
（1）挂载光盘，并进入目录安装ftp，
[root@localhost Server]# rpm -ivh vsftpd-2.0.5-12.el5.i386.rpm
（2）将光盘内容复制到/var/ftp/pub/
[root@localhost RHEL_5.2 i386 DVD]# cp -R /media/RHEL_5.2\ i386\ DVD/* /var/ftp/pub/
(3) 安装套件yum、createrepo
[root@localhost Server]# rpm -ivh yum-3.2.8-9.el5.noarch.rpm
[root@localhost Server]# rpm -ivh createrepo-0.4.11-3.el5.noarch.rpm
(4)制作解决依赖性问题
[root@localhost Server]# createrepo -g /var/ftp/pub/Server/repodata/comps-rhel5-server-core.xml /var/ftp/pub/Server/
[root@localhost Server]# createrepo –g /var/ftp/pub/VT/repodata/comps-rhel5-vt.xml /var/ftp/pub/VT/
[root@localhost Server]# createrepo -g /var/ftp/pub/Cluster/repodata/comps-rhel5-cluster.xml /var/ftp/pub/Cluster
[root@localhost Server]# createrepo -g /var/ftp/pub/ClusterStorage/repodata/comps-rhel5-cluster.xml /var/ftp/pub/ClusterStorage/
(4)配置yum库
[root@localhost Server]# cp -p /etc/yum.repos.d/rhel-debuginfo.repo /etc/yum.repos.d/base.repo
[root@localhost Server]# vim /etc/yum.repos.d/base.repo
[server]
name=Red Hat Enterprise Linux-server
baseurl=ftp://192.168.1.254/pub/Server
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-RedHat-release
[vt]
name=Red Hat Enterprise Linux-vt
baseurl=ftp://192.168.1.254/pub/VT
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[Cluster]
name=Red Hat Enterprise Linux-cluster
baseurl=ftp://192.168.1.254/pub/Cluster
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
[clusterstorage]
name=Red Hat Enterprise Linux-clusterStorage
baseurl=ftp://192.168.1.254/pub/ClusterStorage
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release