redhat 7.9配置阿里云yum源

1、mv /etc/yum.repos.d/*.repo /etc/yum.repos.d/backup/

2、添加dns

vim/etc/resolv.conf

nameserver 8.8.8.8

nameserver 8.8.4.4

nameserver 114.114.114.114

#配置完先检查下通不通

3、vi /etc/yum/pluginconf.d/subscription-manager.conf

将 "enabled=1" 改为 "enabled=0"

4、mv /etc/yum.repos.d/*.repo mv /etc/yum.repos.d/*.repo.bak

5、wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

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

6、sed -i 's/$releasever/7/g' /etc/yum.repos.d/CentOS-Base.repo

#使用vim，里面的$releasever换成对应的版本

:%s/$releasever/7/g

7、yum clean all

8、yum makecache