我正在为我们的应用程序测试Redhat Enterprise Linux 6。
但是，RHN不支持beta RHEL 6软件。
如何在不使用DVD ROM的情况下使用yum命令安装其他软件？
您需要通过编辑/etc/yum.repos.d/rhel-beta.repo文件来启用betaRepo，然后执行：

# vi /etc/yum.repos.d/rhel-beta.repo

确保启用设置为1：

[rhel-beta]
name=Red Hat Enterprise Linux $releasever Beta - $basearch
#baseurl=ftp://ftp.redhat.com/pub/redhat/rhel/beta/$releasever/$basearch/os/
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=rhel-$releasever-beta&arch=$basearch
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta

[rhel-beta-optional]
name=Red Hat Enterprise Linux $releasever Beta (Optional) - $basearch
#baseurl=ftp://ftp.redhat.com/pub/redhat/rhel/beta/$releasever/optional/$basearch/os/
mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=rhel-optional-$releasever-beta&arch=$basearch
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta

保存并关闭文件。
现在，您可以访问不带RHN的软件以进行RHEL 6.0 beta下的测试。

# yum list | less
# yum search php

输出示例：

Loaded plugins: refresh-packagekit, rhnplugin
This system is not registered with RHN.
RHN support will be disabled.
=============================================================================================================== Matched: php ================================================================================================================
php.x86_64 : PHP scripting language for creating dynamic web sites
php-bcmath.x86_64 : A module for PHP applications for using the bcmath library
php-cli.x86_64 : Command-line interface for PHP
php-common.x86_64 : Common files for PHP
php-dba.x86_64 : A database abstraction layer module for PHP applications
...

您可以按照以下步骤安装php：

# yum install php

输出示例：

Loaded plugins: refresh-packagekit, rhnplugin
This system is not registered with RHN.
RHN support will be disabled.
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package php.x86_64 0:5.3.2-3.el6 set to be updated
--> Processing Dependency: php-cli = 5.3.2-3.el6 for package: php-5.3.2-3.el6.x86_64
--> Processing Dependency: php-common = 5.3.2-3.el6 for package: php-5.3.2-3.el6.x86_64
--> Running transaction check
---> Package php-cli.x86_64 0:5.3.2-3.el6 set to be updated
---> Package php-common.x86_64 0:5.3.2-3.el6 set to be updated
--> Finished Dependency Resolution

Dependencies Resolved

===============================================================================
Package            Arch           Version             Repository         Size
===============================================================================
Installing:
php                x86_64         5.3.2-3.el6         rhel-beta         1.1 M
Installing for dependencies:
php-cli            x86_64         5.3.2-3.el6         rhel-beta         2.2 M
php-common         x86_64         5.3.2-3.el6         rhel-beta         515 k

Transaction Summary
===============================================================================
Install       3 Package(s)
Downloading Packages:
(1/2): php-cli-5.3.2-3.el6.x86_64.rpm                   | 2.2 MB     00:03     
(2/2): php-common-5.3.2-3.el6.x86_64.rpm                | 515 kB     00:00     
------------------------------------------------------------------------------
Total                                          284 kB/s | 2.7 MB     00:09     
warning: rpmts_HdrFromFdno: Header V3 RSA/SHA256 Signature, key ID f21541eb: NOKEY
rhel-beta/gpgkey                                        | 6.6 kB     00:00 ... 
Importing GPG key 0xF21541EB "Red Hat, Inc. (beta key 2) " from /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta
Is this ok [y/N]: y
Importing GPG key 0x897DA07A "Red Hat, Inc. (Beta Test Software) " from /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta
Is this ok [y/N]: y
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing     : php-common-5.3.2-3.el6.x86_64                           1/3 
  Installing     : php-cli-5.3.2-3.el6.x86_64                              2/3 
  Installing     : php-5.3.2-3.el6.x86_64                                  3/3 

Installed:
  php.x86_64 0:5.3.2-3.el6                                                     

Dependency Installed:
  php-cli.x86_64 0:5.3.2-3.el6         php-common.x86_64 0:5.3.2-3.el6        

Complete!