为Red Hat Enterprise Linux Server release 5.5搭建本地YUM源

现状：Red Hat Enterprise Linux Server release 5.5上可以使用YUM，但是需要到红帽官方注册，需要花钱。

不花钱的方法：在局域网一台机器上为Red Hat Enterprise Linux Server release 5.5搭建一个YUM源，然后供局域网中的其他机器使用。

yum源搭建 的详细流程：

1 在A机器（CentOS release 6.4 (Final)系统）安装JDK、Tomcat、createrepo

createrepo安装命令：yum install -y createrepo*

2 将Red Hat Enterprise Linux Server release 5.5 ISO文件上传到A机器上/home/commonsoft/,并挂载到os文件夹中

挂载命令：mount -t iso9660 -o loop rhel-server-5.5-x86_64-dvd.iso os

3 在/home/commonsoft/apache-tomcat-7.0.42/webapps/下面创建两个文件夹

mkdir rehl rehl1

4 将os文件夹中的东西全部COPY到rehl rehl1 各一份，然后删除rehl中所有的.html文件，删除rehl/Server/repodata/*、rehl/ServerStrorage/repodata/*、rehl/Cluster/repodata/*、rehl/VT/repodata/*

5 建立rpm文件间的关系

createrepo -s sha -g /home/commonsoft/apache-tomcat-7.0.42/webapps/rehl1/Server/repodata/comps-rhel5-server-core.xml /home/commonsoft/apache-tomcat-7.0.42/webapps/rehl/Server/
createrepo -s sha -g /home/commonsoft/apache-tomcat-7.0.42/webapps/rehl1/Cluster/repodata/comps-rhel5-cluster.xml /home/commonsoft/apache-tomcat-7.0.42/webapps/rehl/Cluster/
createrepo -s sha -g /home/commonsoft/apache-tomcat-7.0.42/webapps/rehl1/ClusterStorage/repodata/comps-rhel5-cluster-st.xml /home/commonsoft/apache-tomcat-7.0.42/webapps/rehl/ClusterStorage/
createrepo -s sha -g /home/commonsoft/apache-tomcat-7.0.42/webapps/rehl1/VT/repodata/comps-rhel5-vt.xml /home/commonsoft/apache-tomcat-7.0.42/webapps/rehl/VT/

6 创建rehl-5p5.repo文件，文件内容如下：

[rehl-server]
name = rehl-server
baseurl = http://archive.cloudera.com/rehl/Server
gpgkey = http://archive.cloudera.com/rehl/RPM-GPG-KEY-redhat-release
gpgcheck = 1
[rehl-cluster]
name = rehl-cluster
baseurl = http://archive.cloudera.com/rehl/Cluster
gpgkey = http://archive.cloudera.com/rehl/RPM-GPG-KEY-redhat-release
gpgcheck = 1
[rehl-clusterStorage]
name = rehl-clusterStorage
baseurl = http://archive.cloudera.com/rehl/ClusterStorage
gpgkey = http://archive.cloudera.com/rehl/RPM-GPG-KEY-redhat-release
gpgcheck = 1
[rehl-vt]
name = rehl-vt
baseurl = http://archive.cloudera.com/rehl/VT
gpgkey = http://archive.cloudera.com/rehl/RPM-GPG-KEY-redhat-release
gpgcheck = 1

7 将rehl-5p5.repo上传到B机器（Red Hat Enterprise Linux Server release 5.5系统）/etc/yum.repos.d并把xxx.xxx.xxx.xxx archive.cloudera.com写入B的/etc/hosts（可以先将别的没法使用的源删除）

8 在B上执行yum clean all

9 在B上执行yum list available,结果列出很多rpm文件，成功。