The download of the yum source from the foreign address is slow, and it breaks halfway down. For this reason, it is changed to the domestic yum source address.
Domestic is ali and Netease
Take centos7 as an example, modify it to Ali's yum source
1. Backup the local yum source
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bak
2. Get the Aliyum source configuration file
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
3. Update the cache
yum makecache
4. View
yum -y update
5. Finally, you can link to the domestic mirror, which is actually the XXX of that city. . .
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bak
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum makecache
yum -y update
You can learn from centos to modify the default yum source address