Centos 国内源

1. 阿里云 源配置

[root@localhost ~]# cd /etc/yum.repos.d/
# 备份源
[root@localhost ~]# mkdir bak
[root@localhost ~]# mv *.repo bak/

# 下载源配置
[root@localhost ~]# wget -O CentOS-Base-aliyun.repo http://mirrors.aliyun.com/repo/Centos-7.repo

# 清理/重建
[root@localhost ~]# yum clean all
[root@localhost ~]# yum makecache