part.0 使用背景

公司內網服務器不能直接通過Internet上網，但為了與外網通信和同步時間等，會指定那么幾臺服務器可以訪問Internet。這里就是通過能上網的機器作為代理，制作內網使用的yum倉庫。

part.1 環境

內網dns（推薦，非必須，因為可使用IP代替）

一臺能上Internet的服務器A

不能上Internet的服務器能與A服務器通信

part.2 nginx安裝

在可連接外網的A中安裝nginx

yum install nginx

part.3 nginx配置

在主機A中添加nginx配置

$ cd /etc/nginx/conf.d$ vim proxy.conf

server {  listen 80;  #listen [::]:80;  server_name mirrors.yourdomain.com;  index index.html index.htm index.php default.html default.htm default.php;  root /home/wwwroot/html;  location /ubuntu/ {   proxy_pass http://mirrors.aliyun.com/ubuntu/ ;  }  location /centos/ {   proxy_pass http://mirrors.aliyun.com/centos/ ;  }  location /epel/ {   proxy_pass http://mirrors.aliyun.com/epel/ ;  } }

part.4 配置yum repo 源

修改無法連接外網的主機B 的repo文件。

$ cat /etc/yum.repos.d/CentOS-7.repo

[base]name=CentOS-$releasever - Base - mirrors.yourdomain.comfailovermethod=prioritybaseurl=http://mirrors.yourdomain.com/centos/$releasever/os/$basearch/  http://mirrors.yourdomain.com/centos/$releasever/os/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=osgpgcheck=1gpgkey=http://mirrors.yourdomain.com/centos/RPM-GPG-KEY-CentOS-7#released updates [updates]name=CentOS-$releasever - Updates - mirrors.yourdomain.comfailovermethod=prioritybaseurl=http://mirrors.yourdomain.com/centos/$releasever/updates/$basearch/  http://mirrors.yourdomain.com/centos/$releasever/updates/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updatesgpgcheck=1gpgkey=http://mirrors.yourdomain.com/centos/RPM-GPG-KEY-CentOS-7#additional packages that may be useful[extras]name=CentOS-$releasever - Extras - mirrors.yourdomain.comfailovermethod=prioritybaseurl=http://mirrors.yourdomain.com/centos/$releasever/extras/$basearch/  http://mirrors.yourdomain.com/centos/$releasever/extras/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extrasgpgcheck=1gpgkey=http://mirrors.yourdomain.com/centos/RPM-GPG-KEY-CentOS-7#additional packages that extend functionality of existing packages[centosplus]name=CentOS-$releasever - Plus - mirrors.yourdomain.comfailovermethod=prioritybaseurl=http://mirrors.yourdomain.com/centos/$releasever/centosplus/$basearch/  http://mirrors.yourdomain.com/centos/$releasever/centosplus/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplusgpgcheck=1enabled=0gpgkey=http://mirrors.yourdomain.com/centos/RPM-GPG-KEY-CentOS-7#contrib - packages by Centos Users[contrib]name=CentOS-$releasever - Contrib - mirrors.yourdomain.comfailovermethod=prioritybaseurl=http://mirrors.yourdomain.com/centos/$releasever/contrib/$basearch/  http://mirrors.yourdomain.com/centos/$releasever/contrib/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contribgpgcheck=1enabled=0gpgkey=http://mirrors.yourdomain.com/centos/RPM-GPG-KEY-CentOS-7