1.查看本地yum源
2.把默认yum源备份
mkdir /opt/centos-yum.bak
mv /etc/yum.repos.d/* /opt/centos-yum.bak/
一、用Centos镜像搭建本地yum源
1.挂载CentOS镜像文件
mount -t iso9660 /dev/sr0 /opt/centos
2.写repo文件并指向镜像的挂载目录
vi /etc/yum.repos.d/local.repo
[local]name=localbaseurl=file:///opt/centosenabled=1gpgcheck=0#各系统版本repo文件对应的下载操作CentOS 5wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repoCentOS 6wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repoCentOS 7wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
3.下载对应的YUM源
4.清除缓存
#各系统版本repo文件对应的下载操作CentOS 5wget -O /etc/yum.repos.d/CentOS5-Base-163.repo http://mirrors.163.com/.help/CentOS5-Base-163.repoCentOS 6wget -O /etc/yum.repos.d/CentOS6-Base-163.repo http://mirrors.163.com/.help/CentOS6-Base-163.repoCentOS 7wget -O /etc/yum.repos.d/CentOS7-Base-163.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo4.清除缓存
3.查看插件是否启用
cat /etc/yum/pluginconf.d/priorities.conf
4.修改本地yum源优先使用
vi /etc/yum.repos.d/local.repo
priority=1//在原基础上加入priority=1 ；数字越小优先级越高//可以继续修改其他源的priority值，经测试仅配置本地源的优先级为priority=1就会优先使用本地源了原文：https://www.cnblogs.com/wzhc/p/11556119.html