修改Centos默认yum源换成国内源

1、首先备份系统自带yum源配置文件/etc/yum.repos.d/CentOS-Base.repo

1	[root@localhost ~]# mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2、进入yum源配置文件所在的文件夹

1	[root@localhost ~]# cd /etc/yum.repos.d/

3、下载163的yum源配置文件到上面那个文件夹内

1 2 3 4 5 6

CentOS7 [root@localhost yum.repos.d]# wget http://mirrors.163.com/.help/CentOS7-Base-163.repo CentOS6 [root@localhost yum.repos.d]# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo CentOS5 [root@localhost yum.repos.d]# wget http://mirrors.163.com/.help/CentOS5-Base-163.repo

4、运行yum makecache生成缓存

1	[root@localhost yum.repos.d]# yum makecache