Redhat7.x 修改阿里云yum源

1. 删除已安装的yum包

将linux自带的yum源删除

rpm -qa | grep yum | xargs rpm -e --nodeps

cd /etc/rpm/

rm -rf ./m*

2. 下载centos的yum包

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

wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-52.el7.noarch.rpm

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

wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-52.el7.noarch.rpm

wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/python-urlgrabber-3.10-9.el7.noarch.rpm 

如果出现404错误，请去https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/搜索关键词查询最新rpm包的链接。

3. 强制安装rpm包

--force --nodeps为忽略依赖检测的强制安装

rpm -ivhpython-urlgrabber-3.10-9.el7.noarch.rpm --force --nodeps

rpm -ivh yum* --force --nodeps

4. 查看yum包是否安装好

rpm -qa |grep yum

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

yum-utils-1.1.31-45.el7.noarch

yum-3.4.3-158.el7.centos.noarch

yum-plugin-fastestmirror-1.1.31-45.el7.noarch

5. 修改repo

下载源文件

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

需要把Centos-7.repo文件中的$releasever全部替换为7

cd /etc/yum.repos.d/

ls

vim CentOS-Base.repo

在vim中执行:%s/$releasever/7/g快速替换。保存退出。

6. 清空重载yum

yum clean all

yum update

# 最后查看一下yum列表

yum list