RedHat7 安装 CentOS7 的yum源

1. 检查是否安装yum包

[root@mail~]# rpm -qa|grep yum

yum-rhn-plugin-2.0.1-4.el7.noarch

yum-3.4.3-118.el7.noarch

yum-langpacks-0.4.2-3.el7.noarch

yum-utils-1.1.31-24.el7.noarch

yum-metadata-parser-1.1.4-10.el7.x86_64

2.  删除redhat自带的yum包

[root@mail~]# rpm -e --nodeps  yum-rhn-plugin-2.0.1-4.el7.noarch

[root@mail~]# rpm -e --nodeps yum-3.4.3-118.el7.noarch

[root@mail~]# rpm -e --nodeps yum-langpacks-0.4.2-3.el7.noarch

[root@mail~]# rpm -e --nodeps yum-utils-1.1.31-24.el7.noarch

[root@mail~]# rpm -e --nodeps yum-metadata-parser-1.1.4-10.el7.x86_64

再用

[root@mail~]# rpm -qa |grep yum

[root@mail ~]# 

查看，无信息显示表示已经卸载完成。

3. 需要下载Python-urlgrabber-3.10-8.el7.noarch.rpm

卸载原先的python-urlgrabber-3.10-4.el7.noarch.rpm

rpm -qa|grep python-urlgrabber|xargs rpm -e --nodeps

4. 下载新的yum包。使用Centos7的yum包

下载地址：http://mirrors.163.com/centos/7/os/x86_64/Packages

wget http://mirrors.163.com/centos/7/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm

wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-3.4.3-150.el7.centos.noarch.rpm

wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm

wget http://mirrors.163.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm

注意：安装包都在不断更新，请按照包名自己匹配，当前可用2017-6-4。

5. 安装以上下载包

rpm -ivh python-iniparse-0.4-9.el7.noarch.rpm

rpm -ivh yum-metadata-parser-1.1.4-10.el7.x86_64.rpm

rpm -ivh yum-3.4.3-150.el7.centos.noarch.rpm yum-plugin-fastestmirror-1.1.31-40.el7.noarch.rpm

[注] :最后2个需要一起安装，否则会出现依赖性错误

6. 下载repo文件

cd /etc/yum.repos.d/

wget http://mirrors.163.com/.help/CentOS7-Base-163.repo

编辑CentOS7-Base-163.repo文件，将其中的$releasever更改为centos的版本号7

参考：

[base]

name=CentOS-7 - Base - 163.com

#mirrorlist=http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=os

baseurl=http://mirrors.163.com/centos/7/os/$basearch/

gpgcheck=1

gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

#released updates

[updates]

name=CentOS-7 - Updates - 163.com

#mirrorlist=http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=updates

baseurl=http://mirrors.163.com/centos/7/updates/$basearch/

gpgcheck=1

gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that may be useful

[extras]

name=CentOS-7 - Extras - 163.com

#mirrorlist=http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=extras

baseurl=http://mirrors.163.com/centos/7/extras/$basearch/

gpgcheck=1

gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that extend functionality of existing packages

[centosplus]

name=CentOS-7 - Plus - 163.com

baseurl=http://mirrors.163.com/centos/7/centosplus/$basearch/

gpgcheck=1

enabled=0

gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

7.  yum clean all 清除原有缓存

8.  yum makecache  获取yum列表

出现下面提示，表示yum更改完成：

Metadata Cache Created