linux(centos)中网络源文件（阿里源、163源、本地镜像源）配置

一、本地源文件配置

mkdir /mnt/cdrom
mount /mnt/CentOS-7-x86_64-DVD-1810.iso /mnt/cdrom
vim /etc/yum.repos.d/Centos-7.repo
写入：
[Centos-7]
name=Centos-7
baseurl=file:///mnt/cdrom
enable=1
gpgcheck=0

注意：配置本地源文件需要挂在光盘镜像至本地目录

二、163网易源文件

CentOS 5
wget -O /etc/yum.repos.d/CentOS5-Base-163.repo http://mirrors.163.com/.help/CentOS5-Base-163.repo

CentOS 6
wget -O /etc/yum.repos.d/CentOS6-Base-163.repo http://mirrors.163.com/.help/CentOS6-Base-163.repo

CentOS 7
wget -O /etc/yum.repos.d/CentOS7-Base-163.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo

CentOS 8
wget -O /etc/yum.repos.d/CentOS7-Base-163.repo http://mirrors.163.com/.help/CentOS8-Base-163.repo

注意：163网易源文件centos8的应该还不能用，后期应该可以直接使用

三、阿里源文件

CentOS 5
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo
或
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo
 
CentOS 6
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
或
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
 
CentOS 7
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
或
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

CentOS 8 
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo 
或 
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo

注：阿里云源文件centos8的已经可以使用过来，赶紧来试试吧

四、生成缓存

yum clean all
yum makecache

注：更新了源文件，大家可不要忘记更新缓存哦