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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 |
- #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
- #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。
既然看完了那就赶紧去试试吧骚年。
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