linux修改镜像

修改成163yum源-mirrors.163.com

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

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

 

二、进入yum源配置文件所在的文件夹

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

 

三、查看CentOS系统版本

[root@localhost ~]# lsb_release -a

 

四、下载163的yum源配置文件到上面那个文件夹内

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

 

五、运行yum makecache生成缓存

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

 

六、这时候再更新系统就会看到如下mirrors.163.com信息

[root@localhost yum.repos.d]# yum -y update
已加载插件：fastestmirror, refresh-packagekit, security
设置更新进程Loading mirror speeds from cached hostfile
* base: mirrors.163.com
* extras: mirrors.163.com
* updates: mirrors.163.com

修改成阿里yum源-mirrors.aliyun.com

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

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

 

二、查看CentOS系统版本

[root@localhost ~]# lsb_release -a

 

三、下载ailiyun的yum源配置文件到/etc/yum.repos.d/
CentOS7

[root@localhost ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

CentOS6

[root@localhost ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

CentOS5

[root@localhost ~]# wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

四、运行yum makecache生成缓存

[root@localhost ~]# yum makecache

 

五、这时候再更新系统就会看到如下mirrors.aliyun.com信息

[root@localhost ~]# yum -y update已加载插件：fastestmirror, refresh-packagekit, security设置更新进程Loading mirror speeds from cached hostfile* base: mirrors.aliyun.com* extras: mirrors.aliyun.com* updates: mirrors.aliyun.com