RedHat用CentOS系统源

[root@leekwen]# cat /etc/issue
Red Hat Enterprise Linux Server release 5.5 (Tikanga)
Kernel \r on an \m

[root@leekwen]# rpm -qa|grep yum
[root@leekwen]# rpm -e yum-3.2.22-20.el5 --nodeps
[root@leekwen]# rpm -e yum-updatesd-0.9-2.el5 --nodeps
[root@leekwen]# rpm -e yum-security-1.1.16-13.el5 --nodeps
[root@leekwen]# rpm -e yum-metadata-parser-1.1.2-3.el5 --nodeps
[root@leekwen]# rpm -e yum-rhn-plugin-0.5.4-13.el5 --nodeps

[root@leekwen]# wget -c http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-3.2.22-40.el5.centos.noarch.rpm [root@leekwen]# wget -c http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm [root@leekwen]# wget -c http://centos.ustc.edu.cn/centos/5/os/i386/CentOS/yum-metadata-parser-1.1.2-4.el5.i386.rpm[/code] 
3、安装CentOS的yum程序：

[root@leekwen]# rpm -ivh yum-3.2.22-40.el5.centos.noarch.rpm yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm yum-metadata-parser-1.1.2-4.el5.i386.rpm


4、修改CentOS的yum源：

[root@leekwen]# cd /etc/yum.repos.d/
[root@leekwen]# cp rhel-debuginfo.repo rhel-debuginfo.repo.bak
[root@leekwen yum.repos.d]# echo > rhel-debuginfo.repo
[root@leekwen yum.repos.d]# cat rhel-debuginfo.repo
[base]
name=CentOS-5 - Base
repo=os
baseurl=http://centos.ustc.edu.cn/centos/5/os/$basearch/
gpgcheck=1
gpgkey=http://centos.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-5
[update]
name=CentOS-5 - Updates
baseurl=http://centos.ustc.edu.cn/centos/5/updates/$basearch/
gpgcheck=1
gpgkey=http://centos.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-5
[addons]
name=CentOS-5 - Addons
baseurl=http://centos.ustc.edu.cn/centos/5/addons/$basearch/
gpgcheck=1
gpgkey=http://centos.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-5
[extras]
name=CentOS-5 - Extras
baseurl=http://centos.ustc.edu.cn/centos/5/extras/$basearch/
gpgcheck=1
gpgkey=http://centos.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-5
[centosplus]
name=CentOS-5 - Plus
baseurl=http://centos.ustc.edu.cn/centos/5/centosplus/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://centos.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-5
[contrib]
name=CentOS-5 - Contrib
baseurl=http://centos.ustc.edu.cn/centos/5/contrib/$basearch/
gpgcheck=1
enabled=0
gpgkey=http://centos.ustc.edu.cn/centos/RPM-GPG-KEY-CentOS-5
###################


5、执行yum升级即可：

[root@leekwen]# yum update