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。
目录
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 ; } location /epel/ { proxy_pass ; } } //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/$basearch/ #mirrorlist=?release=$releasever&arch=$basearch&repo=os gpgcheck=1 gpgkey= #released updates [updates] name=CentOS-$releasever - Updates - yum.com failovermethod=priority baseurl= http://yum.com/centos/$releasever/updates/$basearch/ #mirrorlist=?release=$releasever&arch=$basearch&repo=updates gpgcheck=1 gpgkey= #additional packages that may be useful [extras] name=CentOS-$releasever - Extras - yum.com failovermethod=priority baseurl= http://yum.com/centos/$releasever/extras/$basearch/ #mirrorlist=?release=$releasever&arch=$basearch&repo=extras gpgcheck=1 gpgkey= #additional packages that extend functionality of existing packages [centosplus] name=CentOS-$releasever - Plus - yum.com failovermethod=priority baseurl= http://yum.com/centos/$releasever/centosplus/$basearch/ #mirrorlist=?release=$releasever&arch=$basearch&repo=centosplus gpgcheck=1 enabled=0 gpgkey= #contrib - packages by Centos Users [contrib] name=CentOS-$releasever - Contrib - yum.com failovermethod=priority baseurl= http://yum.com/centos/$releasever/contrib/$basearch/ #mirrorlist=?release=$releasever&arch=$basearch&repo=contrib gpgcheck=1 enabled=0 gpgkey=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: