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 | 192.168.1.10 | 可以访问外网 |
|---|---|---|
| B服务器 | 192.168.1.111 | 不能访问外网,可以通过内网IP访问A服务器 |
在A服务器安装nginx
我们使用nginx作为yum的反向代理软件
> 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/ ;
}
}
//重启nginx
> nginx -s reload
修改B服务器的repo文件
//备份
> 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服务器上修改/etc/hosts
目的是让B服务器能解析
yum.com
> vim /etc/hosts
192.168.1.111 yum.com
验证B服务器是否可以解析
> ping yum.com
刷新yum缓存
> yum clean all
> yum makecache
原文链接:https://rumenz.com/rumenbiji/linux-yum-proxy.html
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