centos yum

最近在虚拟机下面安装了个CentOS 5.5，使用yum更新时发现下载速度异常慢。可以修改yum的配置文件，把其镜像指向国内的服务器即可。

方案一：

# cd /etc/yum.repos.d/

# mv CentOS-Base.repo CentOS-Base.repo.bak

# wget http://docs.linuxtone.org/soft/lemp/CentOS-Base.repo

方案二：

手段修改CentOS-Base.repo文件，将baseurl设置成baseurl=http://ftp.sjtu.edu.cn/centos/5/addons/$basearch/

详细配置如下：

    
    
    
    

     
     
     
     [
     
     
     
     base
     
     
     
     ]
     
     
     
     

name
     
     
     
     =
     
     
     
     CentOS-
     
     
     
     5
     
     
     
     -Base

#mirrorlist
     
     
     
     =
     
     
     
     http://mirrorlist.centos.org/?release
     
     
     
     =
     
     
     
     $releasever5&arch
     
     
     
     =
     
     
     
     $basearch&repo
     
     
     
     =
     
     
     
     os

#baseurl
     
     
     
     =
     
     
     
     http://mirror.centos.org/centos/$releasever/os/$basearch/

baseurl
     
     
     
     =
     
     
     
     http://ftp.sjtu.edu.cn/centos/
     
     
     
     5
     
     
     
     /os/$basearch/

gpgcheck
     
     
     
     =
     
     
     
     1
     
     
     
     

gpgkey
     
     
     
     =
     
     
     
     http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

#released updates


     
     
     
     [
     
     
     
     update
     
     
     
     ]
     
     
     
     

name
     
     
     
     =
     
     
     
     CentOS-
     
     
     
     5
     
     
     
     -Updates

#mirrorlist
     
     
     
     =
     
     
     
     http://mirrorlist.centos.org/?release
     
     
     
     =
     
     
     
     4
     
     
     
     &arch
     
     
     
     =
     
     
     
     $basearch&repo
     
     
     
     =
     
     
     
     updates

baseurl
     
     
     
     =
     
     
     
     http://ftp.sjtu.edu.cn/centos/
     
     
     
     5
     
     
     
     /updates/$basearch/

gpgcheck
     
     
     
     =
     
     
     
     1
     
     
     
     

gpgkey
     
     
     
     =
     
     
     
     http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

#packages used/produced in the build but not released


     
     
     
     [
     
     
     
     addons
     
     
     
     ]
     
     
     
     

name
     
     
     
     =
     
     
     
     CentOS-
     
     
     
     5
     
     
     
     -Addons

#mirrorlist
     
     
     
     =
     
     
     
     http://mirrorlist.centos.org/?release
     
     
     
     =
     
     
     
     4
     
     
     
     &arch
     
     
     
     =
     
     
     
     $basearch&repo
     
     
     
     =
     
     
     
     addons

baseurl
     
     
     
     =
     
     
     
     http://ftp.sjtu.edu.cn/centos/
     
     
     
     5
     
     
     
     /addons/$basearch/

gpgcheck
     
     
     
     =
     
     
     
     1
     
     
     
     

gpgkey
     
     
     
     =
     
     
     
     http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

#additional packages that may be useful


     
     
     
     [
     
     
     
     extras
     
     
     
     ]
     
     
     
     

name
     
     
     
     =
     
     
     
     CentOS-
     
     
     
     5
     
     
     
     -Extras

#mirrorlist
     
     
     
     =
     
     
     
     http://mirrorlist.centos.org/?release
     
     
     
     =
     
     
     
     4
     
     
     
     &arch
     
     
     
     =
     
     
     
     $basearch&repo
     
     
     
     =
     
     
     
     extras

baseurl
     
     
     
     =
     
     
     
     http://ftp.sjtu.edu.cn/centos/
     
     
     
     5
     
     
     
     /extras/$basearch/

gpgcheck
     
     
     
     =
     
     
     
     1
     
     
     
     

gpgkey
     
     
     
     =
     
     
     
     http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

#additional packages that extend functionality of existing packages


     
     
     
     [
     
     
     
     centosplus
     
     
     
     ]
     
     
     
     

name
     
     
     
     =
     
     
     
     CentOS-
     
     
     
     5
     
     
     
     -Plus

#mirrorlist
     
     
     
     =
     
     
     
     http://mirrorlist.centos.org/?release
     
     
     
     =
     
     
     
     4
     
     
     
     &arch
     
     
     
     =
     
     
     
     $basearch&repo
     
     
     
     =
     
     
     
     centosplus

baseurl
     
     
     
     =
     
     
     
     http://ftp.sjtu.edu.cn/centos/
     
     
     
     5
     
     
     
     /centosplus/$basearch/

gpgcheck
     
     
     
     =
     
     
     
     1
     
     
     
     

enabled
     
     
     
     =
     
     
     
     0
     
     
     
     

gpgkey
     
     
     
     =
     
     
     
     http://mirror.centos.org/centos/RPM-GPG-KEY-centos5

#contrib – packages by Centos Users


     
     
     
     [
     
     
     
     contrib
     
     
     
     ]
     
     
     
     

name
     
     
     
     =
     
     
     
     CentOS-
     
     
     
     5
     
     
     
     -Contrib

#mirrorlist
     
     
     
     =
     
     
     
     http://mirrorlist.centos.org/?release
     
     
     
     =
     
     
     
     4
     
     
     
     &arch
     
     
     
     =
     
     
     
     $basearch&repo
     
     
     
     =
     
     
     
     contrib

baseurl
     
     
     
     =
     
     
     
     http://ftp.sjtu.edu.cn/centos/
     
     
     
     5
     
     
     
     /contrib/$basearch/

gpgcheck
     
     
     
     =
     
     
     
     1
     
     
     
     

enabled
     
     
     
     =
     
     
     
     0
     
     
     
     

gpgkey
     
     
     
     =
     
     
     
     http://mirror.centos.org/centos/RPM-GPG-KEY-centos5
    
    
    
    

复制代码

导入 key

＃ rpm –import http://ftp.sjtu.edu.cn/centos/5/os/i386/RPM-GPG-KEY-CentOS-5

运行，测试

＃ yum update  

全部删除临时文件

#yum clean all