1.下載repo文件
wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
2.備份並替換系統的repo文件
[root@localhost ~]# cd /etc/yum.repos.d/[root@localhost ~]# mv CentOS-Base.repo CentOS-Base.repo.bak[root@localhost ~]# mv CentOS6-Base-163.repo CentOS-Base.repo
3.執行yum源更新
[root@localhost ~]# yum clean all[root@localhost ~]# yum makecache[root@localhost ~]# yum update