linux之yum源代理

环境介绍

       一般在内网环境中,多数服务器是不能直接上外网的(为了安全),只有个别的服务器可以访问外网,在不能访问外网的服务器上安装软件由于依赖的问题很容易出错,安装不下去,这时候就可以借助可以上外网的服务器做代理来安装软件。Centos7下设置代理案例。

A服务器	192.168.1.100	可以访问外网
B服务器	192.168.1.200	不能访问外网,可以通过内网IP访问A服务器

A服务器代理yum源

#安装nginx服务器
[root@gby-A ~]# yum install nginx -y
#配置nginx服务
[root@gby-A ~]# cat /etc/nginx/conf.d/yum.conf
server {
        listen 80;
        server_name yum.com;
        location /centos/ {
        #具体代理url根据实际情况更改。可以根据b服务器url编写
            proxy_pass http://mirrors.aliyun.com/centos/ ;
        }

        location /epel/ {
        #具体代理url根据实际情况更改。可以根据b服务器url编写
            proxy_pass http://mirrors.aliyun.com/epel/ ;
        }
    }
#重启nginx
[root@gby-A ~]# nginx -s reload

B服务器yum指向A服务器

#备份yum文件
[root@gby-B ~]# cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak
[root@gby-B ~]# vim /etc/yum.repos.d/CentOS-Base.repo
[base]
name=CentOS-$releasever - Base - yum.com
failovermethod=priority
baseurl=http://yum.com/centos/$releasever/os/$basearch/
        http://yum.com/centos/$releasever/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://yum.com/centos/RPM-GPG-KEY-CentOS-7

#released updates
[updates]
name=CentOS-$releasever - Updates - yum.com
failovermethod=priority
baseurl=http://yum.com/centos/$releasever/updates/$basearch/
        http://yum.com/centos/$releasever/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=http://yum.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - yum.com
failovermethod=priority
baseurl=http://yum.com/centos/$releasever/extras/$basearch/
        http://yum.com/centos/$releasever/extras/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=http://yum.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - yum.com
failovermethod=priority
baseurl=http://yum.com/centos/$releasever/centosplus/$basearch/
        http://yum.com/centos/$releasever/centosplus/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://yum.com/centos/RPM-GPG-KEY-CentOS-7

#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib - yum.com
failovermethod=priority
baseurl=http://yum.com/centos/$releasever/contrib/$basearch/
        http://yum.com/centos/$releasever/contrib/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib
gpgcheck=1
enabled=0
gpgkey=http://yum.com/centos/RPM-GPG-KEY-CentOS-7
#B服务器hosts指向A服务器
[root@gby-B ~]# echo "192.168.1.100 yum.com" >>/etc/hosts
#B服务器验证yum.com是否指向A服务器
[root@gby-B ~]# ping 192.168.1.100
#刷新yum缓存
[root@gby-B ~]# yum clean all
[root@gby-B ~]# yum makecache
#进行yum操作如安装升级等。

结束之有话想说

既然看完了那就赶紧去试试吧骚年。👊