- 需要先安装wget
yum install wget
- 进入yum源目录
cd /etc/yum.repos.d/
- 备份
mkdir repo_bak
mv *.repo repo_bak/
- 下载网易与阿里云的源
wget http://mirrors.aliyun.com/repo/Centos-7.repo
wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
- 清理并生成新的yum缓存
yum clean all # 清除系统所有的yum缓存
yum makecache # 生成yum缓存
- 安装epel源
yum install -y epel-release
wget http://mirrors.aliyun.com/repo/epel-7.repo
- 清理并生成新的yum缓存
yum clean all # 清除系统所有的yum缓存
yum makecache # 生成yum缓存
- 查看
yum repolist enabled # 系统可用源
yum repolist all # 所有源