环境：CentOS7
删除之前的仓库信息
rm -rf /etc/yum.repos.d/*
添加阿里云base仓库
cat << 'EOF' > /etc/yum.repos.d/base.repo
[base]
name=CentOS-$releasever - Base - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
gpgcheck=0
[updates]
name=CentOS-$releasever - Updates - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
gpgcheck=0
[extras]
name=CentOS-$releasever - Extras - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
gpgcheck=0
EOF
添加阿里云epel仓库
cat << 'EOF' > /etc/yum.repos.d/epel.repo
[epel]
name=Extra Packages for Enterprise Linux 7 - $basearch
baseurl=http://mirrors.aliyun.com/epel/7/$basearch
enabled=1
gpgcheck=0
EOF
清空缓存迅速使其生效
yum clean all && yum makecache
本文地址：https://blog.csdn.net/xys2015/article/details/109378741