linux之yum源設置代理

一般在內網環境中,多數服務器是不能直接上外網的(為了安全),只有個別的服務器可以訪問外網,在不能訪問外網的服務器上安裝軟件由於依賴的問題很容易出錯,安裝不下去,這時候就可以借助可以上外網的服務器做代理來安裝軟件。

Centos7下設置代理案例

A服務器	192.168.1.10	可以訪問外網
B服務器	192.168.1.111	不能訪問外網,可以通過內網IP訪問A服務器

在A服務器安裝nginx

我們使用nginx作為yum的反向代理軟件

> yum install nginx -y

配置nginx

> vim /etc/nginx/conf.d/yum.conf
 server {
        listen 80;
        server_name yum.com;
        location /centos/ {
            proxy_pass http://mirrors.aliyun.com/centos/ ;
        }

        location /epel/ {
            proxy_pass http://mirrors.aliyun.com/epel/ ;
        }
    }
//重啟nginx
> nginx -s reload

修改B服務器的repo文件

//備份
> cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak
> 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服務器上修改/etc/hosts

目的是讓B服務器能解析yum.com

> vim /etc/hosts
192.168.1.111 yum.com

驗證B服務器是否可以解析

> ping yum.com

刷新yum緩存

> yum clean all
> yum makecache

原文鏈接:https://rumenz.com/rumenbiji/linux-yum-proxy.html
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