yum加速一条龙
[root@filerserver python]#cd /etc/yum.repos.d
[root@filerserver python]#mv CentOS-Base.repo CentOS-Base.repo.save
[root@filerserver python]#wget http://centos.ustc.edu.cn/CentOS-Base.repo.5
[root@filerserver python]#mv CentOS-Base.repo.5 CentOS-Base.repo
从dba blog看到的
懒人可以直接下载这个脚本执行以下，执行脚本需要root权限
#wget http://www.zhangyiqun.cn/wp-content/uploads/2009/08/fastyum
当然如果是实验环境还可以选择使用本地光盘作为yum源
把光盘加载到本地
[root@localhost CentOS]# mount /dev/cdrom /media
在/etc/yum.repos.d/目录下，有两个文件
CentOS-Base.repo和CentOS-Media.repo
其中CentOS-Base.repo记录着网络上的yum源的地址和路径信息等
CentOS-Media.repo记录着可以从本地作为yum源的介质和路径。其中还有这样一个说明：
#
# This repo is used to mount the default locations for a CDROM / DVD on
# CentOS-5. You can use this repo and yum to install items directly off the
# DVD ISO that we release.
#
# To use this repo, put in your DVD and use it with the other repos too:
# yum –enablerepo=c5-media [command]
#
# or for ONLY the media repo, do this:
#
# yum –disablerepo=\* –enablerepo=c5-media [command]
[c5-media]
name=CentOS-$releasever – Media
baseurl=file:///media/CentOS/
file:///media/cdrom/
file:///media/cdrecorder/
file:///media/ #增加这句
gpgcheck=1
enabled=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-beta
比如安装apache
[root@centos cdrom]# yum —disablerepo=* —enablerepo=c5–media install httpd