CentOS下修复yum安装工具

一.删除自带的yum

# rpm -aq|grep yum|xargs rpm -e --nodeps  

二.从CentOS系统镜像中提取rpm包,这里以centos6.3_x64为例

这里从镜像包Packages目录下提取如下rpm包:

三.安装rpm包

注:这里我为了方便就将所有提取出来的包放到我的VPS上供大家下载

# wget http://www.showerlee.com/down/python-iniparse-0.3.1-2.1.el6.noarch.rpm

# rpm -ivh Python-iniparse-0.3.1-2.1.el6.noarch.rpm

# wget http://www.showerlee.com/down/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm

# rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm

# wget http://www.showerlee.com/down/yum-3.2.29-30.el6.centos.noarch.rpm

# wget http://www.showerlee.com/down/yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm

# rpm -ivh yum-3.2.29-30.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm

注：这一步要两个一起安装，要不会会出现如下错误：

----------------------------------------------

# rpm -ivh yum-3.2.29-30.el6.centos.noarch.rpm

warning: yum-3.2.29-30.el6.centos.noarch.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

error: Failed dependencies:

yum-fastestmirror is needed by yum-3.2.29-30.el6.centos.noarch

# rpm -ivh yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm

warning: yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm: Header V3 DSA signature: NOKEY, key ID e8562897

error: Failed dependencies:

yum >= 3.0 is needed by yum-plugin-fastestmirror-1.1.30-14.el6.noarch

-----------------------------------------------

# wget http://www.showerlee.com/down/PackageKit-yum-0.5.8-20.el6.x86_64.rpm

# rpm -ivh PackageKit-yum-0.5.8-20.el6.x86_64.rpm

# wget http://www.showerlee.com/down/PackageKit-yum-plugin-0.5.8-20.el6.x86_64.rpm

# rpm -ivh PackageKit-yum-plugin-0.5.8-20.el6.x86_64.rpm

四.下载配置源：

# cd /etc/yum.repos.d/

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

五.测试

# yum version

---------------------------------------------

Loaded plugins: fastestmirror, refresh-packagekit

Warning: RPMDB altered outside of yum.

Installed: 6/x86_64                1285:a2a18f0b8c3ca036a361579f6b22014aadfd680e

Group-Installed: yum                 14:45bb88c01e2346ba8fe7ac401a053cfd42bda739

version

----------------------------------------------

# yum -y install gcc　　　　#报错

File "/usr/bin/yum", line 30
    except KeyboardInterrupt, e:
                            ^
SyntaxError: invalid syntax

网上查看后发现yum命令依赖python解析，所以将yum命令指向回原来的python，即python_old。

# vi /usr/bin/yum　　#打开yum命令文件，更改第一行脚本启动地址

    # yum --help　　　　#查看yum命令正常

大功告成.....