Linux配置网络YUM源

若yum下载的时候出现了如下报错

[root@MiWiFi-R3600-srv root]#  yum install ftp
已加载插件：product-id, refresh-packagekit, search-disabled-repos, security, subscription-manager
This system is not registered with an entitlement server. You can use subscription-manager to register.

可通过配置网络yum 源RHEL7.2解决

[root@MiWiFi-R3600-srv root]#  wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
[root@MiWiFi-R3600-srv root]#  sed -i 's/$releasever/7/g' /etc/yum.repos.d/CentOS-Base.repo
[root@MiWiFi-R3600-srv root]#  yum clean all
[root@MiWiFi-R3600-srv root]#  yum list