Redhat 8.4配置阿里云yum源

1、查看系统版本：

# cat /etc/redhat-release

2、尝试下载软件：

# dnf -y install tree

3、备份当前yum源配置文件：

# cp /etc/yum.repos.d/redhat.repo /etc/yum.repos.d/redhat.repo_bak

4、下载阿里云yum源配置文件：

# wget -O /etc/yum.repos.d/aliyun.repo http://mirrors.aliyun.com/repo/Centos-8.repo

5、配置域名解析：

# vim /etc/resolv.conf
nameserver 223.5.5.5
nameserver 223.6.6.6

6、重新下载阿里云yum源配置文件：

# wget -O /etc/yum.repos.d/aliyun.repo http://mirrors.aliyun.com/repo/Centos-8.repo

7、清除yum缓存：

# yum clean all

8、更新yum缓存：

# yum makecache

9、查看可用的yum仓库：

# yum repolist

10、测试安装软件：

# dnf -y install tree

11、提示信息“This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.”处理：

# vim /etc/yum/pluginconf.d/subscription-manager.conf
[main]
enabled=0 ==> 将1改为0
# head -2 /etc/yum/pluginconf.d/subscription-manager.conf

# dnf -y install tree