操作方法
下载repo文件 wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
备份并替换系统的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
执行yum源更新命令 [root@localhost ~]# yum clean all root@localhost ~]# yum makecache [root@localhost ~]# yum update